Memory Frequency?

I need to know how to set my memory Frequency to 800 mhz.

Quote from: Animex on 29-May-09, 02:45:14
Ram: OCZ2N800SR4GK 2gb sticks
Mobo: K9A2 PLatinum MSI
CPU: AMD Athlon 64 x2 Dual Core Processor 6000+
OS: Vista Ultimate 64
I have been trying for over a week to get windows to boot up with more then one stick of ram in. I called OCZ today and got the detailed specs of what I should be set at ...
6-5-5-18 2T 2.1V and 800mhz Dram freq. ( This is for 2 sets, 4 sticks of 2gb ram)
I can get the frequency to 802 with some messing around with the cpu settings. I tried to start with that and I get to the windows start screen where the little green loading bars go across before the windows userloggon screen and freezes for a second then reboots. After reboot then goes to Windows error repair.
Sorry forgot to stick that in there
Quote from: Animex on 29-May-09, 02:23:30
I need to know how to set my memory Frequency to 800 mhz.
I can get the frequency to 802 with some messing around with the cpu settings. I tried to start with that and I get to the windows start screen where the little green loading bars go across before the windows userloggon screen and freezes for a second then reboots. After reboot then goes to Windows error repair.
To run memory at 800, apply CPU reference clock to 213MHz {Can be named "FSB" in BIOS}
There is no warranty that will works as this is consider as OC.
Another combination is apply CPU MP to x14, that will underlock CPU to 2800MHz and memory freq. will be 800 too.
Quote
Ram: OCZ2N800SR4GK 2gb sticks
How many of them?

Similar Messages

Memory frequency in overclocking?

I hope someone is willing to help me out as I am a complete beginner and very much out of my depth... having said that...
I'm looking to set up a very modest stable overclock... with next to no idea of what i'm doing.
I have an E4400 ms-7255 with 2 x 1gb RAM which runs at 333Mhz according to cpuz.
I haven't been able to find anything about 333Mhz RAM (if that IS indeed what i have - since i read it usually runs below its specs)
How does RAM frequency affect overclocking? Is it still possible/worthwhile or does the bandwidth limit it too much?
What settings would you recommend me attempting as a very safe attempt without having to flick the switch to reset my motherboard - and could you give me a bit of a run down/how to keeping in mind i'm less than leet.
Thanks so much
Samuel

Hello oscariouss,
the first basic thing you should try to get sorted before you get into overclocking is the difference between "real clock speeds" and "effective clock speeds" and also the inter-dependencies of different clocks and clock rates on an Intel System.
CPU-Z for example, shows you the "real" clock speed of your memory. Now, as we are talking about DDR memory modules, the effective clock speed is always twice the real clock speed. That is why "333 MHz" actually translates to DDR2-667 Mhz effectively. [DDR stands for "Double Data Rate" and this means that with each clock cycle, two transactions will take place (that is how you get the factor x2)]
Quote
I haven't been able to find anything about 333Mhz RAM (if that IS indeed what i have - since i read it usually runs below its specs)
You probably have DDR2-667 memory modules. To be absolutely sure about that, open your computer case and have a look at the memory modules themselves. The brand and model name is usually mentioned on some sort of sticker.
CPU-Z should also display information about the brand and model name of your memory modules. Have a look at the "SPD" Tab and see what it says in the top half. You can also make screenshot and post them here for comparison.
To overclock the system, the most basic operation is to simply raise the FSB Clock Speed in BIOS. For your current processor, the default FSB clock speed should be 200 MHz. CPU Frequency is always the product of FSB Clock Speed x Multiplier and that is why raising the FSB Frequency will automatically result in a higher CPU Frequency.
Keep in mind, that memory frequency is also tied to FSB Frequency. The relation between FSB Clock and memory clock is regulated via FSB/Memory Ratios that can be set in BIOS. If your FSB Clock speed is 200 MHz and memory clock speed (real) is 333 MHz, that means that FSB/Memory Ratio is set to 1:1.66 in BIOS (probably via an AUTO setting).
Now, if you raise FSB Clock Speed, memory clock speed will rise as well. If you would increase FSB Frequency to 210 MHz in BIOS and the FSB/Memory Ratio remains @1:1.66, memory clock speed will be forced to:
210 MHz x 1.66 = 348,6 MHz [or DDR2-697 MHz effectively]
Please also remember, that your board is a budget model whose VIA Chipset is not really a high-end/high-performance piece of hardware. Overclocking is not exactly what the designers had in mind here. That means that the overclocking potential will most likely be limited and the BIOS will probably lack specific OC relevant options that will help to reach higher clock speeds. That, of course, does not mean that you should not at least try to check what is possible, but you should not be disappointed when you find out that you are unable to stabilize the system above certain frequencies.
I don't know which options you have to influence memory clock speed (or more precisely FSB/Memory Ratio) in BIOS. Just have a look what options you have there and tell us here.

Memory frequency different to FSB

Hello,
i have KT600, i can set the memory frequency different to FSB.
what happens if my FSB runs at 200Mhz and my memory only at 166 mhz???
will there be much performance loss compared to 200/200 ?
thank you.
Oliver

i take your warning seriously. really, i do.
maybe you could explain me why my question is stupid.
thank you
or should i have to mention explicitly that my memory is not capable of running at 200mhz, only at 166, and my question, in less abstract manner would be "will i gain much performance buying 200mhz memory (ddr 400) when my fsb is at 200mhz".

B75A-G43 low memory frequency

I have bough MSI B75A-G43 motherboard and four AMD AE34G1609U2-U memory modules (built by Patriot). In BIOS each of modules frequency shown as 1600, but memory frequency set to 1333, and no option 1600 provided in menu.
I have updated BIOS to latest version, but no success.
Is there some way to set memory frequency to 1600?

I see that, that is because it is AMD memory designed for AMD systems.
You will need to manually set the speed and timings although it SHOULD work even though it is not ment for intel.
Do you need help with this?
How to manually set the memory to it's spec (as stated on thier website)
Enter UEFI/Bios
Click OC
Goto DRAM FREQUENCY: AUTO and change this to 1600
(At this point you can try to save and exit, but i prefer to set the timings manually.)
Next:
Change the Dram Timing Mode to either Link or Unlink either one will work.
Click on advanced dram configuration
Set the timings as follows:
tCL: 9
tRCD:9
tRP:9
tRAS:24
save and exit
It is possible that these settings will not work, if your system won't boot after doing this, you will need to clear the cmos and start over.
>>Clear CMOS Guide<<

T520 - How to decrease memory frequency

Hello everyone,
I am lucky owner of T520 with Intel 2620M processor and 4Gb of memory onboard.
One day I bought memory kit Kingston "Hyper X" KHX1600C9S3P1K2/8G (2*4Gb) and thought "memory supports 1600 and 1333Mhz, and my laptop needs 1333, so it will select correct frequency automatically".
But there started problems - processor initiated new memory with frequency 1600Mhz, and all the system now works unstable. I have errors in Windows 7 memory test. By the way, I tried to check memory pieces apart each other, and in single mode they work fine. SO I think that processor's memory controller is loaded too much in 'dual channel'
So my question is - how can I decrease memory frequency on Lenovo T520 laptop? I was confused, but in BIOS there is no option to change frequencies like it is on Desktop PC...
Thanks.

hey akvamassa,
with regards to this, we would advice you to contact our support team via :
http://bit.ly/LNVsuppNum
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Memory Frequency-DRAM Clock (MHz)

Hi, I have a 875P Neo LSR with a P4 2.4GHz C 800MHz and 512 MB(1) Corsair XMS3200 OEM. The memory defaults to PC2700 as it was made befor the JDEC value was official. When I set the DRAM Frequency to 200MHz and reboot it stays at 200 MHz but the DRAM Clock (MHz) says it's at 333 (166MHz). So what is it running at?

Ok, there's many issues before when the PC3200s are out and many lab tests have proven that most 1st gen PC3200s are an o/c version of PC2700 unfortunately... Since what you have here is an OEM type, I dare not say much nor prove anything against it as there's no known date of production etc... to prove it's age...
If your CPU is a FSB800 (just to confirm again, no offence), it should support any true PC3200s compatible RAMs to the mobo without sweat. My suggestion is that to try borrowing any compatible PC3200 RAMs to the mobo and test it out. If the RAM was detected correctly as DDR400 in both DRAM and DDR Clock, then it'll prove what I've say above .

MOVED: A75MA G55 default memory frequency

This topic has been moved to Overclockers & Undervolting & Modding Corner.
https://forum-en.msi.com/index.php?topic=152729.0

yes that's true. memory doesnt support jedec at higher level than 666 Mhz. just XPM is 1k MHz
It is not such a big problem to owerlock the memory to get it work on that frequency, but more, what i dont understand is, why i cannot get change the NB frequency to this 993Mhz.
I tried to overlock it also, i have movedl bus speed to higher level, but also max cannot give me this number and of course computer is than very unstable ( problems to start etc. )
I would like to have this overlocked frequency supported also by mobo and CPU and it looks like i'm not able to get it in any way :D or better :(
maybe im missing some point here.

990FXA-GD80 can't adjust memory frequency

Hey, I have the 990FXA-GD80 motherboard, and I have an FX-8150 processor hooked up with it as well. I have the latest BIOS and driver utilities installed for the board, but every time I try and adjust my memory DRAM frequency to 1866, my BIOS/motherboard won't post at all.
I have Patriot Viper Xtreme DDR3 memory installed, no issues with it, but the BIOS shows the frequency to be set at "auto" and 1066 MHz. If I try and manually adjust the frequency and reload the computer with the changes, it doesn't post. Anybody know why this is and what I can do to fix it?

Hello! We would like to know some more about your system, if you'd be so kind. For example PSU, graphics card and how many sticks of memory, and I think processor temp according to BIOS would be interesting, too.
My thinking is, either the processor doesn't like your memory yet - and a new BIOS version is required - or the memory is not what you think it is nor what it claims to be.
Please try with a single stick if you haven't. Make sure you got right voltage for the memory; 1,65 volt if this is it http://www.thinkcomputers.org/patriot-viper-xtreme-division-2-ddr3-1866-8gb-dual-channel-memory-kit-review/

Memory frequency problem with K8n Neo4 Platinum

I have 4 banks of memory installed:
2 x 256 GEIL ddr400 Cl2 and 2 x 512 CORSAIR ddr440 cl2.5, total 1.5Gb ram.
They are in dual channel mode, but they run at 100hz and not at 200hz.
If in the bios i set the manual mode for the memory and set 200 hz, than after the reboot they are at 200 hz but in games like wow, css or others the system freezes.
If i let the auto mode for the memory, the system set them at 100 hz and so the problems disappear.
I see the value 100 or 200 hz in the "cell menu->ddr rate". This value is confirmed from cpuz.
How can i set them to 200hz without system freezes?

Quote from: JayBee on 13-December-05, 03:27:53
3 gigs (256x2 + 512x2) is an inherently unstable combination. While the system could boot that way, you are asking the memory controller on the cpu to negotiate too much when it must run one channel at one type of timing and the other channel at an other. Even under the best circumstances, you can boot that way but will fail memtest when system is stressed. Only stable way to use all 4 dimms slots is with 4 identical modules (same size, cas, etc, i.e., same everything). When it comes to mixing sizes like that (2x256 and 2x512), Intel can do it (memory controller is on the board) but AMD cannot (memory controller is on the processor).
Edit- mixing brands (Geil and Corsair) is an other reason why it has to fail. Intel could do it. AMD cannot.
Edit Edit- What 400 Watt psu is that? Note that you need 18 amps on +12 Volt rail minimum for Neo4. Does your psu have that? Just because the label says it, does not make it so. Check what brand it is.
The output at 12V is 18A

Memory problem on Msi x48c platinum

Hi every body,
I have a MSI x48c platinum mainboard,
Recently i bought a ddr3 memory module (corsair CMX4GX3M2A1600C9) trying to upgrade my system,
after replacing old memories with new ones, system didn't boot. Even bios setting page did not apear. So i installed old rams and by decreasing Dram frequensy at 1066MHz and then replacing old and new memories i managed to boot the system up and use the new modules.
Now the question is that how i can use the maximum of ram frequency? Which setting do you recomend?
I set everything else on auto at bios settings.
If you should know, i use an intel q9400 cpu.
Here is an image of my bios setting page where all settings are shown:
minus.com/lM5jHYAgmAwfI

Quote from: badboy2k on 07-September-12, 22:58:03
highest you will be able to use with your setup on the dimms will be 1333mhz with 2 dimms at timings of 9-9-9-24 command rate 2T at the most even if it boots at that frequency it may not be stable!
With a frequency higher than 1066 MHz system can't boot,
Quote from: xmad on 07-September-12, 22:59:26
Try doing a full cmos clear >>Clear CMOS Guide<< after installing the new memory in the proper channel.
By default that memory will operate at 1333 9-9-9-24 1t, see if it will boot after the cmos clear.
There have also been allot of bios updates that provided for better memory support, i suggest seeing what version you have and flashing to the newest. (with your old ram installed to ensure stability.)
I updated bios to last version (7.4), clearing cmos would default setting on bios thus system can't boot again.
Quote from: flobelix on 07-September-12, 22:59:54
Also try setting memory voltage to 1.65v and see if that works.
Have been trying memory voltage up to 1.83v, but it didn't work with memory frequency higher than 1066...

Memory issue with Podcast !!!

Hi,
I have several issues with the Podcast App.
- i cannot sync podcast that i have downloaded on my laptop using itunes to the iphone,
- when i download some podcast directly on the iphone, i cannot play them, i still have to stream them,
- i have uge memory issues and i think that the downloaded version of the podcast might be somewhere on the iphone, but cannot access / delete them (over 16 GO, i have more than 4.5 GO used for 'other', that are not related to anything...)
i have tried to delete / reinstall the app, but this does not change anything...
Any help ?
Rgds

Quote
I have a MSI 975X Platinum rev 2 mb with a e6300 processor overclocked to 2.24ghz.
If your CPU operates @2.24 GHz, it means that you increased FSB frequency to about 348 MHz.
To make sure there is no misunderstanding here, let me point out the following:
Memory frequency is ALWAYS linked to FSB frequency by the FSB/DRAM Ratio you can select in BIOS. If you select 1:1 for example, the BIOS will show that memory frequency is 533 MHz. This value however, only applies to the default FSB clock speed of 266 MHz:
266 MHz x 1 = 266 MHz (or 533 MHz effective DDR2-frequency).
If your system is overclocked, what counts is only FSB/DRAM ratio, not the memory speed displayed in BIOS. That means, if you set FSB/DRAM ration to 1:1 and FSB frequency to 348 MHz, your RAM will operate @:
348 MHz x 1 = 348 MHz (or 696 MHz effective DDR2-frequency).
The main question is:
What are you talking about when you say, you can't make your RAM operate @800 MHz?
The BIOS does not offer a proper divider to get your RAM to 800 MHz @348 FSB clock speed to begin with.
You have the following choices if your overclock your system:
FSB=300 + FSB/DRAM ratio = 1.33
300 MHz x 1.33 ~ 400 MHz (or 800 MHz effective DDR2-frequency)
FSB=320 MHz + FSB/DRAM ratio = 1:1.25
320 MHz x 1.25 = 400 MHz (or 800 MHz effective DDR2-frequency)
FSB=400 MHz + FSB/DRAM ratio = 1:1
400 MHz x 1 = 400 MHz (or 800 MHz effective DDR2-frequency)
Use CPU-Z to monitor the DRAM frequency that is actually set if you are overclocking.

Memory speed problem

Hi guys/gals,
I received today my memory: 2*512mb mushkins PC3200 400mhz...here is the problem:
everytime I boot up I receive a post saying: 333mhz. I ran sysmark: 200mhz*2, I ran cpu-z: 200mhz*2 and ran another tool saying I have to ddrs at 200mhz. but whenever I boot I receive the message 333mhz and whenever I run those tools I see detected 333mhz but when looking on them appart: the proggies mention the 200mhz.
I tried the latencies down to 2.5-3-3 but problem stil remains.
what can I do, please help!!!

OK, I found something right for the change Hope you can do something with this...
Name            Intel Pentium 4 550
Code name         Prescott
Specification         Intel(R) Pentium(R) 4 CPU 3.40GHz
Family/Model/Stepping      F34
Extended Family/Model      0/0
Package            LGA775
Core Stepping         D0
Technology         0.09µ
Instructions Sets      MMX, SSE, SSE2, SSE3
Clock Speed         3400.1 MHz
Clock multiplier      x17.0
Front Side Bus Frequency   200.0 MHz
Bus Speed         800.0 MHz
Stock frequency         3400 MHz
L1 Data Cache         16 KBytes, 8-way set associative, 64 Bytes line size
L1 Trace Cache         12 Kµops, 8-way set associative
L2 Cache         1024 KBytes, 8-way set associative, 64 Bytes line size
L2 Speed         3400.1 MHz (Full)
L2 Location         On Chip
L2 Data Prefetch Logic      yes
L2 Bus Width         256 bits
Northbridge      Intel i915P/i915G rev. B1
Southbridge      Intel 82801FB (ICH6) rev. 3
Graphic Interface   PCI-Express
PCI-E Link Width   x16
PCI-E Max Link Width   x16
Memory Type      DDR
Memory Size      1024 MBytes
Memory Frequency   160.0 MHz (5:4)
CAS#         2.5
RAS# to CAS#      3
RAS# Precharge      2
Cycle Time (tRAS)   9
Memory type      DDR-SDRAM
Manufacturer (ID)   Enhanced Memories (7F32000000000000)
Size         512 MBytes
Max bandwidth      PC3200 (200 MHz)
Part number      Mushkin (991085)
Manufacturing date   Week 00/Year 00
Attributes
Number of banks      2
Data width      64 bits
Correction      None
Registered      no
Buffered      no
Timings table
Frequency (MHz)      200
CAS#         2.0
RAS# to CAS# delay   3
RAS# Precharge      2
TRAS#         6

Memory speed problems with Neo2 Platinum

Hi all -- I'm trying to figure out a problem I'm having getting my memory frequency up to speed. Right now I have two 512MB sticks of Crucial Ballistix PC4000 RAM but I can't get them running any faster than 166Mhz each (or 333 Mhz DDR). I'm using a AMD Athlon 64 3500+ processor and I've got my ratio set to "auto." Is there a memory frequency setting I'm missing? How can I get these sticks up to speed?
Thanks!

dont worry - i did exactly the same! Not sure if was being a bit slow or the manual is written badly but it confused me
Out of curiosity what is core center reporting your cpu temp as? Mine says around 58c but im not sure if its just being reported wrongly ( even though a few people have said this 1.2 bios fixes the temp isssue ).

Memory Limitation

Does anyone know why bios update 1.80 reduced memory frequency from CL9 1333 to CL7 1066 ? I have a SAT A665-S6095. I would like to Max out my machine to 8GB. Tried to research, but no info available thus far.
Thanks
Bill R

Try entering the BIOS and loading "optimized defaults", save and exit. From there, remove the battery and AC adapter and press the power button for 15 to 30 seconds to decharge the unit. Next, reseat the memory sticks inside the laptop. Finally, reboot and check the BIOS again to see if they were re-recongnized and correctly identified.
Somtimes a BIOS update/flash does this for some reason and the above seems to fix it by making it forget the old settings and relearn it.

HP Probook 4520s Memory upgrade to 8GB (2x4GB) Corsair Unsuccessful and Failed

Ok, here is the story
My notebook is HP Probook 4520s
with Windows Windows 8.1 (6.3) 64-bit (Build 9600)
Please refer to the end of this post for CPU-Z report of specs.
Currently I have 3GB of memory installed -had to install them back after upgrade failure-.
Please refer again to the CPU-Z report for the memory module specifications.
I bought the following Corsair 2x4GB memory pack
Corsair CMSO8GX3M2A1333C9 8GB (2x4GB) 1333MHz DDR3 SODIMM
http://www.scorptec.com.au/product/Memory/SODIMM/43657-CMSO8GX3M2A1333C9
Specs of new modules:
Warranty Lifetime
Size 8GB Kit (2 x 4GB)
Performance Profile none
Fan Included No
Heat Spreader—
Memory Configuration Dual Channel
Memory Type DDR3
Package - Memory Pin 204
Package - Memory Format SODIMM
Tested Voltage 1.5
SPD Voltage 1.5
Speed Rating PC3-10600 (1333MHz)
SPD Speed 1333MHz
Tested Speed 1333Mhz
Tested Latency 9-9-9-24
SPD Latency 9-9-9-24
When I installed the memory module onto the notebook, I basically couldn't go beyond the POST stage. That is the HP logo appears on the screen, and that's it.. that's it.. nothing beyond that stage.
When I went to the BIOS settings, the memory successfully read 81xxMB, this is basically 8GB of RAM.
I tried to reset BIOS settings, failed again.
I removed the 2x4GB modules, put back both original 1GB and 2GB modules -the ones that came with the notebook-, everything worked again.
What went wrong here..?
P.S. please do not reply with lame replies like "that's weird" "that's strange", I know it's weird and strange. I want specific and clear suggestions.
CPU-Z report below:
CPU-Z TXT Report
Binaries
CPU-Z version 1.69.0.x64
Processors
Number of processors 1
Number of threads 4
APICs
Processor 0
-- Core 0
-- Thread 0 0
-- Thread 1 1
-- Core 2
-- Thread 0 4
-- Thread 1 5
Timers
ACPI timer 3.580 MHz
HPET timer 14.318 MHz
Perf timer 2.208 MHz
Sys timer 1.000 KHz
BCLK timer 133.02 MHz
Processors Information
Processor 1 ID = 0
Number of cores 2 (max 8)
Number of threads 4 (max 16)
Name Intel Core i5 430M
Codename Arrandale
Specification Intel(R) Core(TM) i5 CPU M 430 @ 2.27GHz
Package (platform ID) Socket 989 rPGA (0x4)
CPUID 6.5.2
Extended CPUID 6.25
Core Stepping C2
Technology 32 nm
TDP Limit 25 Watts
Core Speed 2527.3 MHz
Multiplier x Bus Speed 19.0 x 133.0 MHz
Rated Bus speed 2394.3 MHz
Stock frequency 2266 MHz
Instructions sets MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T, VT-x
L1 Data cache 2 x 32 KBytes, 8-way set associative, 64-byte line size
L1 Instruction cache 2 x 32 KBytes, 4-way set associative, 64-byte line size
L2 cache 2 x 256 KBytes, 8-way set associative, 64-byte line size
L3 cache 3 MBytes, 12-way set associative, 64-byte line size
FID/VID Control yes
Turbo Mode supported, enabled
Max turbo frequency 2533 MHz
Max non-turbo ratio 17x
Max turbo ratio 19x
Max efficiency ratio 9x
TDC Limit 21 Amps
Core TDP 21 Watts
Uncore TDP 4 Watts
Power @ 9x 7 Watts
Power @ 10x 8 Watts
Power @ 11x 9 Watts
Power @ 12x 11 Watts
Power @ 13x 13 Watts
Power @ 14x 15 Watts
Power @ 15x 18 Watts
Power @ 16x 21 Watts
Power @ 17x 25 Watts
Max bus number 255
Attached device PCI device at bus 255, device 2, function 1
Chipset
Northbridge Intel Havendale/Clarkdale Host Bridge rev. 12
Southbridge Intel HM57 rev. 06
Graphic Interface PCI-Express
PCI-E Link Width x16
PCI-E Max Link Width x16
Memory Type DDR3
Memory Size 3 GBytes
Channels Dual, (Symmetric)
Memory Frequency 532.1 MHz (4:16)
CAS# latency (CL) 7.0
RAS# to CAS# delay (tRCD) 7
RAS# Precharge (tRP) 7
Cycle Time (tRAS) 20
Row Refresh Cycle Time (tRFC) 60
Command Rate (CR) 1T
MCHBAR I/O Base address 0x0FED10000
MCHBAR I/O Size 4096
MCHBAR registers
DMI
DMI BIOS
vendor Hewlett-Packard
version 68AZZ Ver. F.0F
date 02/18/2011
ROM size 2560 KB
DMI System Information
manufacturer Hewlett-Packard
product HP ProBook 4520s
version unknown
serial 2CE0211M4C
UUID {1520830E-6A57-11DF-8C36-42C05900004D}
SKU WS879EA#ABV
family 103C_5336AN
DMI Baseboard
vendor Hewlett-Packard
model 1411
revision KBC Version 57.34
serial 2CE0211M4C
DMI System Enclosure
manufacturer Hewlett-Packard
chassis type Notebook
chassis serial 2CE0211M4C
DMI Processor
manufacturer Intel(R) Corporation
model Intel(R) Core(TM) i5 CPU M 430 @ 2.27GHz
clock speed 2264.0 MHz
FSB speed 133.0 MHz
multiplier 17.0x
DMI Extension Slot
designation PCI SLOT1
type PCI
width 32 bits
populated no
DMI OEM Strings
string[0] ABS 70/71 79 7A 7B 7C
string[1] CSM v01.4A
string[2] www.hp.com
DMI Physical Memory Array
location Motherboard
usage System Memory
correction None
max capacity 8192 MBytes
max# of devices 2
DMI Memory Device
designation Top-Slot 1(top)
format SODIMM
type unknown
total width 64 bits
data width 64 bits
size 2048 MBytes
DMI Memory Device
designation Top-Slot 2(under)
format SODIMM
type unknown
total width 64 bits
data width 64 bits
size 1024 MBytes
Storage
Drive 0
Device Path \\?\scsi#disk&ven_&prod_st9320423as#4&1f4bc32b&0&000000#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}
Type Fixed
Name ST9320423AS
Capacity 298.1 GB
SMART Support Yes
USB Devices
USB Device Generic USB Hub, class="0x09", subclass=0x00, vendor=0x8087, product=0x0020
USB Device USB Composite Device, class="0xEF", subclass=0x02, vendor=0x0461, product=0x4DB6
USB Device Generic USB Hub, class="0x09", subclass=0x00, vendor=0x8087, product=0x0020
USB Device Microsoft Mouse and Keyboard Detection Driver (USB), class="0x00", subclass=0x00, vendor=0x045E, product=0x0745
Graphics
Number of adapters 1
Graphic APIs
API ATI I/O
Display Adapters
Display adapter 0
Name ATI Mobility Radeon HD 4500 Series (Microsoft Corporation - WDDM v1.1)
Board Manufacturer 0x103C (0x1411)
Memory size 512 MB
PCI device bus 1 (0x1), device 0 (0x0), function 0 (0x0)
Vendor ID 0x1002 (0x103C)
Model ID 0x9555 (0x1411)
Performance Level 0
Win32_VideoController AdapterRAM = 0x20000000 (536870912)
Win32_VideoController DriverVersion = 8.97.10.6
Win32_VideoController DriverDate = 06/20/2012
Software
Windows Version Microsoft Windows 8.1 (6.3) 64-bit (Build 9600)
DirectX Version 11.0
This question was solved.
View Solution.

Specific and clear. Your laptop uses 1.35 volt memory and you installed 1.5 volt.
Here is the crucial page for the memory you need:
http://www.crucial.com/store/listparts.aspx?model=ProBook%204520s
If this is "the Answer" please click "Accept as Solution" to help others find it.

Memory Frequency?

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