How to VCore mod my 645 ultra (MS-6547)

HI..
i got 645 ultra (MS-6547) and P4 1,80 @ 2,3GHz.. The problem is, that i can set VCore to max 1,6V, witch gives me.. 1,55V to 1,58V. I would like to set it higher..
HOW

Unless you really don’t care about frying your components, that procedure sounds like an impressively bad idea. I’ve also heard a rumor that there’s a “wire-wrap” way to unlock the multiplier on the P4s, but the same applies.  

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  • Ms-645 ultra (MS-6547) CPU:RAM

    Hullo,
    I Just Finished building my new system. I am in the process of clocking it out. I used Fuzzy Logic 4 to find out at what speed my system crashes at. Fuzzy crashes any where between 139MHz & 143MHz system clock with CPU core voltage only slightly juiced to 1.5 volts.
    This is probably not a good program for the actual overclocking from what I've read, but does serve as a good burn in utility. So I've decided on a 133MHz system clock in bios. Don't want to get too greedy right now as I am using stock H/S and fan. Next did a 5X burn in with Sandra and couldn't crash my system 49c idle 62c load. I must say this is a very nice mobo, extremely stable.
    What I am having problems deciding on are my memory timings. This is my first MSI mother board and I'm not really familiar with the normal fast ultra and turbo settings.
    Initially I set at the normal selection with CPU - RAM ratio at highest setting of 4:5 and CPU-Z gives me these memory numbers 166MHz & 2.5-3-3-7-11.    
    Next I tried the ultra setting and the highest ratio of 1:1 any other ratio causes system to lock up. CPU-z gives me these memory numbers 133MHz 2.5-2-2-6-9
    It dosen't Appear that the Ultra timing mode offers any advantages over default memory timing settings. Are these words "Ultra" and "turbo" just marketing schemes meant to entice the common PC user, or are there some additional speed settings that go along with with the ultra and turbo modes that I am unaware of. Also after setting system clock to 133MHz My PCI & AGP are left untouched at 33MHz & 66MHz. I was expecting higher speeds. How are these independant? Where can I adjust these to clock along with the system clock. With those AGP & PCI numbers it behaves like a true 533MHz FSB system. I'm a little baffled with this new system. Any explainations would be greatly appreciated.
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    I'm not displeased, only a little puzzled. in fact i was counting on having to reduce the core & memory speed of my card just a little bit. to allow for a higher oc. Is this a 400/533 mobo manual says 400. Hmmm. I wonder what would happen if I put an 800 FSB cpu in here. bios system clock goes to 200. I happen to have one. this mat be interesting.  

  • 645 Ultra (MS-6547) Really Strange Bios Problem

    I have just upgraded my pc with a 645 Ultra (MS-6547) mainboard with 128Ram and a Celeron at 1,7GHz. I have a hdd with a Windows 98 on it. The first time I booted after the change, windows starts up, it starts to detect the devices and is asking me to restart. At restart I see the video Bios and after that the mainboard starts beeping from the speaker and the display is showing lots of pages with special caracters and it freezes after a minute or so!!!!
    I tried to upgrade the bios but al i got is this message:
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     D686
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     At first I thinked that is a boot virus, but I scanned the hdd on another system using f-prot with the latest definitions available(30.01.2003) and is clean.
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    thanks.

    First of all: every one of the two mainboards started fine at the first boot, it loaded windows, started to detect new hardware then it asked me to reboot. After that it was hell! The graphics bios apeared and after that is starting to show something like this " %#^@&$(!#^ " all over the screen, is filling pages with this caracthers and beeping from the speaker. the d-bracket is with the 3 and 4 leds on red and i can't do a thing. the bios flasher (from your site) is telling me:
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    the next thing i did was to try the old components on another pc based on an old i810 board. every one of them worked fine (individually and together). then I use the third board to remake my sistem from scratch with only new components (the old ones I was afraid to use), i instaled win98 on another hdd with drivers for the mobo. Everything was fine. The other hdd i scanned it on another system (winXP) with NAV2003 using the 05/feb/2003 updates and is clean. Then i saved the docs on it, formated it and copied (using pqmagic8 ) the partition from the new hdd with the working win98 on it. Installed the hdd and is ok. The the floppy and is ok. And now I am afraid to put the video card on it!!! I have talked with the service support and they told me to wait until they e-mail me an update program, new bios and instructions to recover my two boards. but that was 2 days ago... and i still got 2 freaked mobos!!!!
    I will try tomorrow to recover the bios using the instructions on your site, hope it will work.
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  • 645 Ultra MS-6547 BIOS Flash problems!

    Hi!
    I've just tried to upgrade my BIOS from 1.7 to 1.9 for this board. I downloaded the version MSI Live Update 2 gave me - it created a boot and rescue disk.
    Install of BIOS went well, was successful. After I rebooted my computer, I can't now see anything on the screen. It beeps at me 4 times, then searches the hard-disk and floppy-disk momentarily. It then beeps twice, then another beep comes up.
    I can't seem to rescue the BIOS with CTRL-HOME either. Has anyone got any ideas? I followed the procedure to the letter!
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    Hi!
    Problem solved. It was an issue with the computer not recognising the AGP card properly. As I have dual monitors, I left the PCI card in the machine and removed the AGP card. After configuring the BIOS, I was then able to reinsert the AGP card - everything works.
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  • 645-Ultra Timing Settings (MS-6547)

    I just finished building my new PC. I've been exploring and found in the bios timing setting modes. My mode is currently set to normal. When trying to advance the settings to fast, turbo, or ultra the PC won't  boot or post until I clear CMOS.
    Any idea why the faster settings won't work?
    Also I have installed Fuzzy Logic 4. When trying to manipulate any of the overclock
    settings, the system locks and I can't reboot until I unplug the system. Any idea why Fuzzy Logic freezes the sysem?
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    Channel Watt Tech. 350w Power Supply
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    Memory Modules Serial Presence Detect (SPD)
    Module #1
    General
    Memory type      DDR-SDRAM
    Manufacturer (ID)   Kingston (7F98000000000000)
    Size         512 MBytes
    Max bandwidth      PC2700 (166 MHz)
    Part number      K
    Attributes
    Number of banks      2
    Data width      64 bits
    Correction      None
    Registered      no
    Buffered      no
    Timings table
    Frequency (MHz)      133   166   
    CAS#         2.0   2.5   
    RAS# to CAS# delay   3   3   
    RAS# Precharge      3   3   
    TRAS#         6   7
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  • 645 ultra - Dual Channel Memory?

    Just Finished Building my system about 2 weeks ago. I was wondering if the MS-6547 is capable of running memory in dual channel mode?
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    Following great advice from initial poster to this thread  , I've finally managed an overclock my 645 ULTRA, it's only taken me a year
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    Turbo Ram Timing.
    Ram Latency CL2
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    Al of which I was backing off, but rightn now seems to hold up
    I was able to wind the FSB up to 118Mhz, clocking me at a mear 2.85 Gig  (which for some reason is higher than 118*24)
    the good thing here, is when the system did crash at 120, the bias did not re-set! which was happening in the past.
    At 120 I got quite a lot of graphical artifacting, but my gcard was running hot since the air temp here is at about 25/26C with sumer approaching (don't help does it!)
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  • Higher Vcore? 645 ultra

    Is it possible for MSI to release a BIOS with a higher vcore? I have read on this forum that intel stated the northwoods can handle more than 1.7v. If so why hasnt MSI raised their Vcore from 1.6? I have seen a vast amount of posts from MSI customers asking for a higher Vcore. The only reasons I can think of are that the 645 Ultra cannot handle a higher voltage or MSI isnt getting our requests. To clarify which board I own it is the MSI 6547 Ver. 1 AKA MSI 645 Ultra 333. Thank you for reading and please reply if you have any feedback.

    Well you may be at the limit of your cpu, I personally wouldnt go higher than 1.75 volts ( which is really 1.7v because this board undervolts by .05v).  I also think that the chipset can't handle much past  150 mhz not too mention how out of spec the pci and agp bus is (if anyone has taken this chipset significantly higher I'd like to see it).  Also I had a Asus P3V4X (coppermine slot 1 mobo) and it was often suggested to put a heatsink on the clock generator chip (right by the ram slots, stick your finger on it and you'll see what I mean) to get higher fsb overclocking which indeed worked.  Now I havent tried it on this motherboard because I ripped it off said motherboard and put it on my Diamond MX300 sound card (Aureal chip) because it was sputtering at high fsb overclocking (which solved that problem as well).

  • Old MSI 645 Ultra (version 1.1) won't Work.(period)!!!

    OK VERY BIG PROBLEM!!!!
    i built a computer from scratch, well old parts from my other computer!!the parts are 2.0gig intel cpu, 512ddr ram, 60gig harddrive, Msi 645 ultra(verison 1.1), geforce 2mx, and a 300W PSU. I put it all together fine I think . When i turned it on, Nuthing worked!!
    I have the D-BRacket tool in the back and the lights first went 2 green top>1 green left, 1 green right which meant something like "Initialising Video Interface." and the computer didn't even work!!!nuhting, ZERO no bios no beep, but the power all worked. i fiddle around with things and Wen i turn it on again, the D-Bracket has ALL RED LIGHTS "CPU Damaged or inproperly placed" which is like impossible. ANd nuthing happens. I switch all my parts into my new one and nuthing is fried it all works!!put it all back together and the"Initalising video interface"lights happen again!!! i dunno whats wrong, maybe the mainboard partly fried or something i have no clue!! Monitor DOesn't show anything execpt a blank screen. Everything powers up but nuthing works!!

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  • Max speed for 645 ultra?

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    http://www.msi.com.tw/program/support/cpu_support/cpu/spt_cpu_detail.php?UID=43%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20&NAME=MS-6547
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  • 645 Ultra not booting with new GeforceFX5200

    Thanks ahead of time for all the help.. I'm really just a newbie computer guy with a frustrating problem.  Before last week I was running my system with a Geforce2MX with no problems.  At one point I had to flash the motherboard because it didn't recognize my hard drives, but the video card was fine.  I bought Deus Ex Invisible war, and found out I had to update my video card.  So I purchased an Albatron Gigi GeforceFX5200E.  After removing my old video card and inserting the new one, my computer would not boot.  The power would turn on, but the Monitor does not.  The D-Bracket says it is hanging on "Initializing Video Interface", so I had my friend test out the video card, with the results being it works perfect.  So I am at my wits end... I have the new AGP drivers... the motherboard is updated... I know the card works.  I have read about messing with the voltage or somthing, but I don't know how or what to set things at. Please help!!!
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  • 645 ultra to 645 ultraC install error

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    When my puter starts I get the following error:
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    I reinstalled system, was about time It had a clean install anyway. Works fine now.

  • MSI 645 Ultra - Bios Toasted! Need help

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    Best thing would be to have someone with an EEPROM programmer to burn it, or get a replacement from MSI.
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  • MSI 645 Ultra - AmiBIOS 3.31a

    Hi,
    I did not plug in the connector for the CPU stock fan as my stock fan uses those white, red, yellow cable for power. Hence my motherboard will keep beeping that it's High Temperature since it "did not" detect my stock fan running.
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    Quote
    Originally posted by NovJoe
    I'm out of ideas too...
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  • 645 Ultra Memory Limitation?

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