P4 2.4C doesn't meet OC expectations

I just got 2 * 512 OCZ PC4200 Performance memory and I was expecting to get to it's max speed with just a Vcore boost, but it won't. I use Prime95 torture test with small FFTs (stresses CPU only) - now I'm at 257 MHZ FSB with 1.625 Vcore and it seems stabe but I can't get it to be stable at anything above 262 FSB even with 1.675 Vcore. I think it has something to with the voltage the processor gets, I select a certain setting in the BIOS but when I bootup, Winbond tells me it's a bit lower, and when I stress the CPU the voltage drops about .085 volts. I thought the PSU was the problem but I recently changed it and I still get low voltages on the CPU (even though the 3.3, 5 and 12 V have all improved).

System:
P4 2.4 OC to 3.09
2 * 512 OCZ PC4200 Performance series at 2.8V
Abit IS7-E
Radeon 9600Pro.

EDIT: I was also disapointed to see that my mobo can only give out a max of 2.8 VDIMM, because the modules can take a max of 2.9 under the warranty.

Suicide is man's way of telling God "You can't fire me, I quit!"<P ID="edit"><FONT SIZE=-1><EM>Edited by ytoledano on 01/31/04 01:42 PM.</EM></FONT></P>
12 answers Last reply
More about doesn meet expectations
  1. Play around with it. I don't know how far IS7E will let you OC I left my IS7 at 250 FSB.
  2. Well, the IS7 has problems with getting the FSB over 250 at 5:4 mode, that's why I got new memory so I'd be able to be at 1:1 mode.

    Suicide is man's way of telling God "You can't fire me, I quit!"
  3. Try lowering your memory timings a little. Just because the memory modules can run fast timimgs does not mean the motherboard will run at those timings.

    I aint signing nothing!!!
  4. All of these high frequency modules have very lax timings, mine is rated for 533MHZ at 3-4-4-8. It don't get anymore lax than that.

    I've in the rain I've [-peep-] in the snow
    I've [-peep-] in the air and [-peep-] in the sea
    but I'll never be happy and I'll never be free
    'till I'll [-peep-] the army like the army [-peep-] me
  5. When did you buy your 2.4C?

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  6. what kind of cooling do you have on your 2.4c ? 3.09ghz, almost 700mhz overclock isnt too shabby.
  7. I have a Thermalright SLK-947U on it. Also, I discovered that the memory was limiting me when it was in Dual-Channel. With DC disabled I had no problem reaching 3.2 with 1.525V (stock). I would have kept going only my system got corrupted or something and now I can't get into windows. I need a single file: C:\Windows\system32\config\system (this file has no extention) if someone could make a copy of it after booting with a different OS and Email it to me I'd be greatful. ytoleda@inter.net.il . thanks a lot!

    I've in the rain I've [-peep-] in the snow
    I've [-peep-] in the air and [-peep-] in the sea
    but I'll never be happy and I'll never be free
    'till I'll [-peep-] the army like the army [-peep-] me
  8. I think you coorupted your registry... Have you try to boot with the Windows CD and use the "repair" option.

    --
    Would you buy a GPS enabled soap bar?
  9. Which one is better?

    x2 PC3200 + P4c-3Ghz
    or
    x2 PC4200 + P4c-2.4Ghz

    i think they should be similar in cost.

    A fine day!
  10. first, get the 2.6 and not the 2.4, they cost the same. Second, if you're a gamer, invest first in a good vid card. PC3200 + 3.0 = minimal overclocking or none. PC4200 + 2.6 = massiver overclocking (will probably also be faster @ 250 FSB)

    POST is way overrated, the black screen and beeps should be enough for most people.
  11. That sucks. Mine is @ 3.12 w/stock fan thanks to my P4P800.

    ----------------------
    PIV 2.4c @ 3.12ghz
    1gig PC3200 (512mbx2)
    ASUS P4P800
    GF3 Ti200 64mb (soon to be replaced)
    WinXP Pro
    3DMark2001SE: 6453
    3DMark2003: 729
  12. I'm limited by my NB, you're not since you're not stressing it so much - you're in 5:4 or 3:2 mode. I know I recieved a really noticable boost at games when switching from 5:4 250FSB with DDR400 to 1:1 255 FSB with DDR533 and that's not because of the 60MHZ I gained on the CPU. It was most noticable at SimCity4.

    POST is way overrated, the black screen and beeps should be enough for most people.
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