Overclock i5 2500k & GD65

Hi all I am looking to overclock my i5 2500k and GD65 to 4.8ghz 24/7 is this safe to do so without degrading my components? Also I am not very clear with all the functions in the bios, there seems to be a lot if voltage settings. Can someone please advise me on starter settings I should try and if they don't work what then gets changed.
Thanks
Michelle

Quote from: DaLoona on 27-March-11, 20:08:03
Well thats how they keep it clean and tidy here and the majority that comes here likes the way the forum is run.
If you come from other (manufacturer/OEM/whatever) forums and Ive been to my share, I know what, you're most likely, referring to.
But overhere we dont like flamewars, trolling, bashing against the brand/forum/manufacturer, we are keen to give help only and not feed someones personal vendetta, as that's how things on other forums tends to go, when not strictly moderated.
But this is just my opinion.
As said by Bernhard please list all of your components so we now what you have and we can help somewhat better.
As all overclocking is concerned, yes there is a risk that it goes wrong.
Is it safe to run 4.8GHz, 24/7? Nobody but time can tell since you run it out of specs and thus Intel doesnt give any guarantees, but will you get there with the cpu is also the question.
Some get it to +5GHz on air, others barely reach 4.3GHz, it all depends on what the cpu can handle and nobody can tell you that either, not even Intel.
Best way to start is read up, have you done that and think you know the basics of overclocking, then up the multi without any voltagemodifications at all and see how far it goes.
If you reach the point where you BSOD, then up the Vcore by 1 or 2 notch and see if you can get higher.
At the end you'll need to tweak some other things too and dont forget to stresstest it in between, its not punching the numbers and presto its done.
Overclocking can be a long and tideous process and as said, you'll need to test a lot to see if the system holds
The max safe Vcore, as what to tweak more, I dont know yet, but others here probably will, Im still saving/reading up for my P/Z68 rig.
A few more words of advice, dont overclock it with standard intelcooler and get a good quality psu and if youre not sure at all, leave it as is.
Thanks for all that info , I think I answered it in my above post.The only thing I did backwards is I upped my multi to 46 and vcore to 1.35v then kept the multiplier the same and reduced the vcore until I blue screened then went back up 1. Kinda the same thing I suppose. Do i just do the same for 47 and 48 then? Other voltages I changes were, IO voltage to 1.176, SA voltage to 1.19 I think that was about it but the last 2 I just followed the guide for them, don't really understand what they do tbh

Similar Messages

MOVED: Overclock i5 2500k & GD65

This topic has been moved to Overclockers & Modding Corner.
https://forum-en.msi.com/index.php?topic=147224.0

This topic has been moved to Overclockers & Modding Corner.
https://forum-en.msi.com/index.php?topic=147224.0

Maximum safe voltage for onboard GPU (GT overclocking) on 2500k using Z68A-GD65?

i am currently stuck on using onboard graphics of my 2500k which is HD 3000 until i wait for my new GPU to arrive(probably 2-3weeks from now )
i looked everywhere and can't find any answer on how high should be the limit for onboard GPU overclocking
the option is from 1.0-1.35v
how high is the safe limit for onboard gpu voltage so i could start pushing the chip ?

Quote
i looked everywhere and can't find any answer on how high should be the limit for onboard GPU overclocking
Every place except the one it might be found? The Intel datasheet?

Overclocking the z77a-gd65 board

Hello my new found friends (I hope).I am new to both these forums and overclocking but I'm willing to learn. I have a msi z77a-gd65 mobo, 32 gigs crucial memory with an i7 3770k cpu rated at 3.5 GHz. I also have a corsair H80i cpu liquid cpu cooler. Right now the cpu is running at 4.2 GHz but I would like to try to go higher manually if I can. If any body can help with easy to follow instructions on how to do this I will be extremely grateful.

I recommend searching the threads that specialize in the 'Turbo' OC method. Ivy CPU's are not super OC'ers on conventional cooling solutions, but excellent performance can be pulled out of them in the 44X-45X range and still keep all the power saving features intact as well. CPU V. left alone to work on Auto is recommended. Initially for testing, set VDRoop to 100%. Disable EuP 2013, Overspeed Protection, and Spread Spectrum.

Overclocking MSI X58A-GD65

Greetings to all!
I would like to overlock my computer properly in order to be able to achieve better perfomance in gaming
That is due to the reason I don't want to spend more money to this computer (I have already spent a lot)
My system build is:
Tower: CoolerMaster Cosmos RC-1000
PSU: CoolerMaster Real Power M850
CPU: Intel Core i7 920
CPU Cooler: CoolerMaster V8
Motherboard: MSI X58A-GD65
RAM: OCZ DDR3 PC3-12800 Intel® i7 Triple Channel [3x2GB, 1600 MHZ, 8-8-8-24
SSD: A-Data X25 80GB by Intel (Model: SSDSA2MH080G1GN) [Sata 2]
VGA: Sapphire Radeon HD4870 1GB
HDD1: Western Digital Caviar Black 1TB (WD1001FALS) [Sata 2]
HDD2: Western Digital 250GB [Sata 1]
HDD3: Western Digital Caviar Black 640GB (WD6402AAEX) [Sata 3]
Optical 1: Samsung 223QRSMN DVD-RW [Sata ?]
OS: Windows 7 x64 Ultimate
As you can see my build can be considered high-end.
So far I have overclocked CPU to run at 3.0 GHZ and RAM speed at 1800 MHZ.
If I set CPU to run at a higher speed the system boots fine but the OS refuses to start
Also I have encountered some hang ups in games. I believe it's because of the automized RAM timings.
In order to overclock I have to access the "Cell Menu" in BIOS Settings.
The Cell Menu has exactly these options:
Current Core Frequency: 3.00 GHZ (150x20)
Current DRAM Frequency: 1800 MHZ
Current QPI Frequency: 4.8000 GT
->CPU Specifications (it has information about what technologies Core i7 920 supports)
->CPU Feature: Intel EIST, Intel C-State, C1E Support, Overspeed Protection, Hyper-Threading Function,
Execute Bit Support, Set Limit CPUID Max Val to , Intel Virtualiation Tech, INtel VT-d Tech
->Intel Eist: Disabled, Enabled, Auto
->C1E Support: Disabled, Enabled
->Adjust CPU Base Frequency (MHz): 100-400 mhz (Current: 150)
->Adjust CPU Ratio: 12-21 (Current: 20)
->Adjusted CPU Frequency (MHz): 3000 mhz
->Memory -Z: DIMM1,3,5 Memory SPD Information
Quote
DIMM 1 Memory SPD Infromation
Memory Type: DDR3 SDRAM
Max Bandwidth: DDR3-1066 (533 MHZ)
Manufacture: OCZ
Part Number: OCZ3X1600LV2G
Serial Number: 00000000
->X.M.P Support Information:
Code: [Select]
X.M.P Support
Max Bandwidth: DDR3-1800 (900 MHZ)
Memory Voltage: 1.65V
SDRAM Cycle Time: 1.111ns (1CLK)
DRAM TCL: 10.000 ns (9CLK)
DRAM TRCD: 10.000ns (9CLK)
DRAM TRP: 10.000ns (9CLK)
DRAM TRAS: 30.000 ns (27clk)
DRAM TRFC: 90.000 ns (81clk)
DRAM TWR: 15.000ns (14CLK)
DRAM TWTR: 7.555 ns (7clk)
DRAM TRRD: 6.000 ns (6CLK)
DRAM TRTP: 7.555ns (7clk)
SDRAM Cycle Time: 1.875 ns (1CLK)
DRAM TCL: 13.125ns (7clk)
DRAM TRCD: 13.125ns (7clk)
DRAM TRP: 13.125ns (7clk)
DRAM TRAS: 30.000ns (16clk)
DRAM TRC: 49.500ns (27clk)
DRAM TRFC: 110.000ns (59clk)
DRAM TWR: 15.000ns (8clk)
DRAM TWTR: 7.500ns (4clk)
DRAM TRRD: 7.500ns (4clk)
DRAM TRTP: 7.500ns (4clk)
Current DRAM Channel 1 Timing: 0-0-0-0
Current DRAM Channel 2 Timing: 0-0-0-0
Current DRAM Channel 3 Timing: 0-0-0-0
DRAM Timing Mode: Auto(1), Unlick(2), Link(3)
Quote
If set to Auto (1):
Advance Dram Configuration: Is grayed out
If set to Unlick(2):
->Advance DRAM Configuration:
Code: [Select]
CH1 1T/2T Memory Timing: 1-3
CH1 CAS Latency (CL): 4-15
CH1 tRCD: 3-15
CH1 tRP: 3-15
CH1 tRAS: 9-31
CH1 tRFC: 30-255
CH1 tWR: 0-15
CH1 tWTR: 0-15
Ch1 tRRD: 0-7
CH1 tRTP: 0-15
CH1 tFAW: 15-63
CH1 B2B-CAS Delay: 0-31
[color=#696969]Current CH1 tdrRDTRD,TWR,TRD,TRD etc... [/color]
->Channel 1 Advance Timing: Auto, Manual
---> If set to Manual these options appear:
CH1 tdrRdTRd: 3-9
CH1 tddRdTRd: 3-9
CH1 tsrRdTWRr: 3-17
CH1 tdrRdTWr: 3-17
CH1 tddRdTWr: 3-17
CH1 tsrWrTRd: 11-25
Ch1 tdrWrTRd: 2-8
CH1 tddWrTRd: 2-8
CH1 tdrWrTWr: 3-9
CH1 tddWrTwr: 3-9
CH1 tsrRdTRd: 4 or 6 DRAM clocks
CH1 tsrWrTWr: 4 or 6 DRAM clocks
CH1 Round Trip Latency: 1-255
Then I have Channel 2 and 3 which have the same options as Channel 1
->Extreme Memory Profile: Disabled, Profile 1, Profile 2. If set to a profile option "Extreme Memory Profiles Mode: Advance" appears
-> Memory Ratio: Auto, 3-8 (Current: 6)
Adjusted DRAM Frequency DRAM Frequency (MHz: 1800)
->Uncore Ratio: Auto, 6-20 (Current: 12)
Adjusted Uncore Frequency (MHZ): 3600
->QPI Configuration: Quote
QPI Links Speed: Full-speed, Slow-mode (Current: Full)
QPI Frequency: Auto, 4.8 GT, 5.866 GT, 6.4 GT (Current: Auto)
->Clockgen Tuner: Quote
CPU Amplitude Control: 700-1000mv (Current 900MV)
PCI Express Amplitude Control: 700-100mv (Current 900MV)
CPU CLK Skew: Normal, 100-1500ps (Current Normal)
IOH CLK Skew: Normal, 100-1500ps (Current Normal)
->Adjust PCI Frequency (MHZ): Auto, 37.3 42 (Current Auto)
-> Adjust PCI-E Frequency (MHZ): 100-200 MHZ (Current 100)
-> Auto Disable PCI/PCI-E Frequency: Enabled, Disabled (Current Enabled)
->CPU Voltage (V): Auto, +0.00-+0.630 (Details: when voltage is high the text is colored in red meaning that's its dangerous), -0.020- -0.320 (The text is colored in grey meaning that these options are safe) (Current: +0.300)
->CPU PLL Voltage (V): Auto, 1.00-2.43 (When voltage is high or very low, text is red-colored) (Current: 1.85)
->QPI Voltage (V): Auto, 0.88-1.83 (When voltage is high or very low, text is red-colored) (Current: Auto)
->DRAM Voltage (V): Auto, 1.20-2.77 (When voltage is high or very low, text is red-colored) (Current: 1.65) (Details say: "According to the INtel CPU spec, DRAM Voltage setting 1.65v may damage the cpu permanently. It is strongly recommended that you install the dram with the voltage setting below 1.65V. "
->DDR_VREF_CA_A,B,C: Auto, 0.510-1.225 (When voltage is high or very low, text is red-colored) (Current: Auto)
->DDR_VREF_DQ_A,B,C: Auto, 0.699-0.985 (When voltage is high or very low, text is red-colored) (Current: Auto)
->IOH Voltage (V): Auto, 0.76-2.64 (When voltage is high or very low, text is red-colored) (Current: Auto)
->ICH Voltage (V): Auto, 0.70-2.13 (When voltage is high or very low, text is red-colored) (Current: Auto)
-> Spread Spectrum: Disabled, Enabled
Text in blue means that these options are Disabled by me
Reasons: These technologies conserve power, I want to have better perfomance not to conserve energy.
Text in grey means that these options cannot be changed
Ouf, that all the options in Cell menu... This motherboard must have been designed for professional overclockers.
So any suggestions, any guides that I should follow?
I have heard and seen on the internet that Core i7 920 can reach 4,0 GHZ but not quite stable can I achieve such perfomance with good stability?
How do I get the real full specifications of these RAMs?
Should I enable some of the CPU features to conserve power and have a better temperature?
Should I enable also green power?
PS) Again to clarify it. I'm aiming for perfomance.

Quote from: Jack on 23-November-10, 21:46:51
It does not make sense to try overclocking the CPU and rhe memory at the same time, as it does not allow you to know if stability problems are caused by instable memory settings or instable CPU related settings.
Because of that, you should split your whole OC task into two obectives:
1. Objective: Overclock the CPU, not the memory.
2. Objective: Once the desired CPU Overclock is reached & stable, start worrying about the memory.
To reach your first objective, please keep your memory speeds as low as possible (keep it @DDR3-1066) and focus on the processor only.
So should I leave all the RAM options to Auto?

Steps And Explain How To OverClock MB:Z77a-gd65 Cpu:I7 3770k Ram:2x4(8gb) 2133

Steps And Explain How To OverClock and tell us why we enabled and disabled option and voltage and shortcut means ex: ( EIST )
Board : MSI Z77A-GD65
VGA : gigabyte 570 soc
V-Bios : 10.8
PSU : huntkey 700w
CPU : Intel Core I7-3770K
MEM : gskill 2133 2x4gb F3-17000CL9D-8GBXM http://www.gskill.com/products.php?index=403
HDD : corsair force 3 SSD 60gb on(OS)
Cooler : corsair H100
OS : Win 8 Pro 64bit
Case : bitfenix.Colossus

Quote
Spread Spectrum ---Disable--- why
Spread Spectrum is for unique situation where there are TONS of computers in close proximity and is used to prevent them from interfering with each other via emf. It is also less stable.
Quote
Q2 :Intel Turbo Boost ---enbled--- why
This would be enabled when using a turbo oc. It boosts the cpu multiplier when under load.
Quote
Q3 :Enhanced Turbo------ enbled----why
Enhances turbo operation by increasing the multiplier on all of the cores to the same amount.
Quote
Q4 :intrnal pll overvoltage -----enbled---- why
You can leave this on "auto" for most everyday overclocks. It increase voltage to the PLL a tab but can cause issues with sleep if you are using an everyday OC.

Help Overclock i5 2500k?

Hello guys,
I just found out this great site with alot of helpful people and I would like to ask for a help with overclocking my Intel i5 2500k.
My MB is: MSI Z77A-G43
and just bought a Coolink Corator DS cooler (Im hopefully going to install it today)
I checked some tutorials on OCing but there are many different options, some are the same as in the tutorials and some of them are missing. and I would like to not make some bad changes in the BIOS.
I have installed ClickBios 2 so I can post some screens of the options available:
Basically I know that main settings are CPU Ratio (Multiplier) and CPU Voltage.
But there are some other options that Im not sure about because different tutorials show different settings.
Internal PLL Overvoltage - (default is Auto, from what I've read it could stay on Auto?)
EIST - enabled
Intel Turbo Boost - default is enabled, some say enabled some disabled
My OC Genie - not sure what this does
DRAM Freq - default is Auto (is this for RAM overclocking?)
Extreme Memory Profile - default is Disabled
DRAM TIming Mode - default is Auto
Spread Spectrum - Disabled
CPU Core Voltage - The most important one, default is Auto, could stay on auto for lower frequencies?
DRAM Voltage - Auto
Then there are the CPU features:
Limit CPUID Maximum - Disabled
Intel Virtualization Tech - default is Enabled
Power Technology - Custom
C1E support - Disabled
OverSpeed Protection - Enabled
Intel C-State - Enabled
Package C-State limit - Auto
I would really appreciate if someone could help me with these settings as Im newbie in this.
Should I touch the DRAM settings as well?
Basically What I need is to set the CPU Core Voltage from Auto to 1.20V and then bump up the CPU Ratio to 40-45? How do I know if the Voltage is enough? When it boots or do I need to run the tests?
Thank you in advance, I hope its not too much questions

Quote from: Sh4d0W on 19-June-13, 21:38:05
What about Turbo Boost? Should it be disabled? Because when I OC the CPU, turbo boost would OC it more.
Also when OCing the CPU, wont the RAMs change the frequency accordingly? Therefore I should set it to 1333 or so?
No it should be enable and it wont overclock more the CPU and also the RAM will not change frequency.
Quote from: Sh4d0W on 19-June-13, 21:38:05
What does the OverSpeed protection and Long,Short Duration Power limits do?
In simple words they are Power savings for normal CPU clock frequency limiting the Power that your CPU can consume. Overspeed protection should limit your CPU speed at some point (never figure it out how does that work if it works at all but general recommendation is to disable it to avoid stability issues).
Quote from: Sh4d0W on 19-June-13, 21:38:05
And I cant CPU Core Vdroop Offset Control option anywhere, you can check the screens I posted above. Im not sure if the options in ClickBios differ from actual options in BIOS, but this option is not in the ClickBios program.
Well if its not then you cant control the vdroop, but check in Bios itself not with clickbios.
Quote from: Sh4d0W on 19-June-13, 21:38:05
One last question, what is the best/preffered way to apply the thermal compound? Pea method or spread method?
Intel Processors definitely Pea method, small drop in the center around +- 3mm is perfect.

Unable to overclock i5 2500k

Last night I updated BIOS to the latest version which brought back the voltage control again. After doing the normal CMOS and default settings restore, I applied my OC again and tested it. It worked fine. Today I wanted to give lower voltages a try so I bumped them down a little, but when I entered windows this time I found that the overclock had not been applied. I've tried everything, it just won't overclock anymore. No matter what I put the multiplier on it remains at 3,3GHz and I've confirmed it with CPU-Z, 3DMark11 and RealTemp. I've tried restoring defaults and reseting CMOS again but that doesn't help either.
Help me!
My board is MSI P67A-C45.

Quote from: HU16E on 05-February-12, 22:21:44
Recommend to reflash to the UEFI/BIOS version that was working, & notify MSI Tech Support of your results & experience with the latest update revision you tried.
http://support.msi.com
Added: In CPU Features, did you remember to set the durations & limits?
Durations & limits? What are you refering to?
I managed to fix the problem somehow, although I'm not sure how... In any case it runs like it should now.

MOVED: Overclocking on Z77 GD65, please help

This topic has been moved to Overclocking, Undervolting.
https://forum-en.msi.com/index.php?topic=161889.0

Quote from: CalinTM on 20-September-12, 07:23:14
But i want to still have low frequency in idle, for that, what setting causing this EIST or C1E ? Or both ? I mean if i want to have 4.5Hhz on load, and 1.6Ghz on idle, for having 1.6Ghz on idle i need to enable both EIST and C1E, or just one of them, and the other disabled.
The setting is vcore=auto, c-states=enabled and EIST=enabled not C1E as it was in 775 processors. Ivy Bridge has less VID voltage than Sandy Bridge and that means that most of IB will overclock less at auto voltage so most of them will only get 4.2 to 4.4 Ghz.
Quote from: CalinTM on 20-September-12, 05:29:06
OK, so in short answer, i will let the internal pll overvoltage to enabled ?
Disable it, internel PLL overvoltage is for extreme overclocking and might help above 4.8Ghz and that's it. According Intel can cause some CPU degradation overtime.
Quote from: CalinTM on 20-September-12, 05:29:06
1. After a CPU overclock in my case, the Intel C State (or something like that) sets to disabled. I am able to enable it again ?
And i don't understand that feature, what it actually does ? I have the options C2, C4, i think, and some auto and no limit. I should let it disabled for a OC, or enable it ?
You can and should leave it enabled it, it makes huge difference in the processor power consumption and it causes no instabilities with casual overclocking.
Quote from: CalinTM on 20-September-12, 05:29:06
2.On my PCI-E settings, i have some PCI Latency, and it's set to 32, by default. I Can achieve better overall performance if i set it to 64, or it's useless ?
32 is the best performance.

MOVED: overclocking the z77a-gd65 board

This topic has been moved to Overclocking, Undervolting.
https://forum-en.msi.com/index.php?topic=166750.0

I recommend searching the threads that specialize in the 'Turbo' OC method. Ivy CPU's are not super OC'ers on conventional cooling solutions, but excellent performance can be pulled out of them in the 44X-45X range and still keep all the power saving features intact as well. CPU V. left alone to work on Auto is recommended. Initially for testing, set VDRoop to 100%. Disable EuP 2013, Overspeed Protection, and Spread Spectrum.

MOVED: Overclock with 990FXA-GD65 & Phenom II 1100T BE

This topic has been moved to Overclocking, Undervolting.
https://forum-en.msi.com/index.php?topic=184361.0

Quote from: Bernhard on 28-October-14, 16:38:17
This guide should assist you in understanding your CPU overclock. Wish you luck
http://www.overclockers.com/step-guide-overclock-amd-phenom/
Thanks, I'll have a good look through that

P67A GD65 B3 - issues

Hi everyone
I have some isses with my new p67a-gd65:
Q1. When booting before showing the intel raid utility I hear 1long and 3or4 short beeps. Accorind to google those 3 short beeps should mean that there's a problem with the upper memory. I have F3-12800CL9D-8GBSR2 (2x4GB) and the memory is supported by this mobo according to the gskills website. Furthermore I ran the memtest86+ (v4.20) a week ago and this morning (for about 90mins) and no errors turned out. The system/memory hasn't been overclocked and I'm using the 1f8 bios.
If the beeps are 4short this should mean that the system timer is dead. I cannot see any issues when running win7 or fedora linux. Everything looks ok. Should I be concerned???
I noticed the beeps this morning because it turned out I've used the wrong pins for the beeper (JFP2) for the mobo. That's why I haven't heard them before (if there were any).
Should I be concered for those beeps?
Q2. In the "green" section there are 2 options to choose from: APS and Intel SVID XXXX. When I choose APS all 6 phase leds are on all the time. As I said before the system hasn't been overclocked (i5-2500k). Even in idle (after 15 min) I still have a solid light from all 6 leds.
If I choose Intel SVID instead of APS after the system fully boots it shows 1 led with steady light, the following 4 are lit but not as intensive as the first one, and the last led is blinking. So I still have all of them on. I have enabled the c1e state and the other c states and chosen "no limit" for the c-states.
once again: Should I be concerned about this? Why don't those led turn off et least in idle???
Q3: I'm using an raid0 for my data and therefore have enabled the intel-raid. As a result when booting I have to wait about 7 sec starring in front of the "intel raid-rom bla-a-a-a". Do you know how I can hide the this intel-blaaaaa and speed up the boot process?
otherwise the system looks rock solid but those isses drive me crazy!
--peter

Please post the full system specs.
>>Posting Guide<<

Z68a GD65 Gen 3 - ME8 to ME7 while keeping 25.6 possible ?

Hello,
I've currently updated my BIOS from 23.7 to 25.6 because I saw that it would fix my issues with my K90 keyboard. Unfortunately now, I cannot overclock. I would prefer to keep the updated BIOS since it supports my keyboard but, by reading the forums here, I have to downgrade from ME8 to ME7. At the moment, I'm having lots of difficulty doing so...
System specs
2500k
Z68A GD65 Gen 3 BIOS v25.6
16 GB (4x4GB) G.Skill F3-12800-4GBSR2 DDR3-1600 9-9-9-24 2T @ 1.35V
MSI Lightning GTX 560 Ti
Seasonic X-760
Corsair K90 Keyboard
Dell U2713HM monitor
Intel 320 120GB SSD + 2x500GB Seagate 7200RPM
Thanks in advance!

Here are some overclocking issues that I have encountered with 25.6
Pre-upgraded BIOS (23.7), I used the following guide for information on overclocking my 2500k ; http://www.tomshardware.com/forum/265056-29-2600k-2500k-overclocking-guide. I appreciated this guide because it was detailed, used almost the same MB as me (p67-GD65), same processor and it's from a reputable site.
With 25.6, this guide does not work. Anytime you try to disable overspeed protection, turbo boost, or Power Technology, overlocking does not work (CPU-Z says multiplier is at 33 while Windows says 43).
A part from that, if I don't touch those options, I can overclock quite easily. I have my 2500k @ 4.3GHz, 1.3V after a 24 hour Prime95 run (blend test). Max temp was 61 C, average around 55 C.
So is the previous guide I was using still valid and the issues are with the overspeed protection, turbo boost, or Power Technology... or is it now functionning properly ?
Ders

Z68A-GD65-G E7681IMS.N00 bios does not suffer from cpu throttling

Hello
I have been trying to overclock my 2500k with no good results despite having one of the best aftermarket
coolers for my CPU (Noctua NH-D14). The problem was that even with the CPU working within acceptable
temperatures, I was suffering from cpu throttling.
-Ill try to describe the cpu throttling I experienced with N10,N20 and N31 beta bios: I was trying to achieve
4.8Ghz by maintaining the stock FSB and setting the multiplier to x48. I got to boot into windows, but no
matter what I used in C1E, Speedstep, Turbo boost, C-State, C-State Limit, Short or long term wattage or core limit,
the multiplier lowered from 48x to 41x under a prime95 or linx stress test, thus leaving the system a real CPU speed
of 4.1GHz just in the moment that high CPU clock is needed!!!!!!!!.
-I have assembled cheaper Z68 mainboards form other vendors having no problems in overclocking 2500k to 4.4Ghz with much worse
CPU coolers than mine, so I decided to investigate this issue a bit.....
I realized that original N00 bios does not suffer from CPU throttling, getting easily to 4.8Ghz with 1.4v CPU, maintaining the multiplier
ad 48X for the whole AVX linx stress tests, these are the results:
-N00 bios..............................48X stable multiplier......................4.8Ghz. ................linx 119.1360 GFlops
-N10,N20 or N31b bios...........41X-48X variable multiplier.............4.1-4.8Ghz............linx 104.4250 GFlops
hope this info is useful for anyone(specially bios developers), and I havent bored you......

Actually, I don't need to apply any kind of load to see the throttling in any of the latest bios, I just boot into windows and open CPUZ.
With the multi set at 48 in the bios, it jumps from about 44-48. A different (lower) multi produces the same fluctuation of the multi.
Using an older bios with the G43 board completely eliminated the issue, it stays at a constant 48, or whatever other multi I choose to set in the bios.
For my Z68-GD65, the oldest bios listed on the MSI download page, which is listed as v.23.0 (7681vN0) dated 07-06-2011, is the only bios that I can use to keep a steady multiplier, and thus clock speed.
But, as I mentioned, I have EIST, Speedstep, etc. all disabled, so I will always have one clock speed, whether at idle or load.
Thus it shows immediately when just at the desktop.
I want to emphasize that I'm not trying to make a big deal about this, just having a friendly discussion about it.
I have a good workaround for now, and as I mentioned, I'm very pleased with these MSI boards. I gave the G43 to a good friend, so I can just enjoy the Z68-GD65 now.
@Bernhard: That's an interesting theory that with EIST and C-States disabled, the Primary Plane power limit and long and short duration power settings don't apply correctly, etc.
I have no clue what it means, but it all sounds very good :-D
Only thing is, why does it not happen at all with an older bios in two different boards?
Perhaps you could simply try temporarily disabling all EIST, C1E, and C-State just to see if the multi fluctuates for you when you check with CPUZ?
By the way, I'm enjoying your posts on these boards, particularly the Z68 GD65 now. You're providing a lot of very helpful information, which certainly helps me to learn to work with this excellent motherboard.
For 4.8GHz (4809MHz in CPUZ with the 100.2 bus speed) I have the vcore at 1.420v., PLL is at 1.65v.
Quite stable there, I'm not anal with P95, but an hour or two of Prime Blend with no errors is good enough for me.
@leftyman: 1.355v. for 4.8GHz?
You've got a really good cpu there!

After overclock, EIST is really disabled even though BIOs says enabled (svet?)

I have just flashed to BIOS v1.7 with new Intel ME. Basically this is a problem I noticed even in Bios v1.4. I am overclocking i5-2500k with MSI P76A GD65 mobo
After overlocking, the cpu never idles. it's at what you overclocked to all of the time. This problem does not happen if I clear cmos and wipe all overclock settings. To verify that the cpu never idles I am using CPU-Z to monitor it. normally in idle the volt would drop to 1v and core speed to 1600mhz, but now it's at 1.264v and 4200mhz.
MSI Control centre confirms CPU Z, although the temperature in Realtemps show 31 idle at 4.2ghz lower than running prime95 at 4.2ghz (around 48c) so it means although processors are clocked and volted high they're not doing anything and is fairl cool.
Note: All I have changed to overclock is "Multiplier from 33 to 42" & " CPU Vcore from 1.20v to 1.25v" in the BIOS (did not use control centre)
If SVET could again help me out on this issues would be much appreciated.

Quote from: Jack on 24-January-11, 18:18:31
Make sure that C1E & C-States are enabled along with EIST. Look here, same thing: https://forum-en.msi.com/index.php?topic=144798.msg1077949#msg1077949
OK I enabled C-State (No Limit) and C1E support.
Now my CPU has gone down to 1.6ghz but the voltage isn't going down. it's still set at my overclocking voltage. (do I have to set auto vcore voltage in bios? but that would mean lose the overclocking right?)
https://forum-en.msi.com/index.php?topic=137321.0 they had the same problem back in May last year on the P55 boards, has the problem not been fixed even on the new P67A boards nearly a year later?

Overclock i5 2500k & GD65

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