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DS3 + E6400 overclocking problem

M

mbd1979

n00b
Joined
Sep 30, 2006
Messages
23
Hi,
My setup is : Gigabyte DS3 F7 bios + E6400 (L629B006) + 2x1Gb DDR2 Kingmax PC6400 CL5 + Big Typhoon + X800 XL

The problem is it doesn’t get past 402 FSB (up to 412) no matter what.

Currently I’m running stable at:
3216 MHz (8x402 FSB) @1.3V
RAM 804 MHz 4-4-4-12, +0.1 V
Northbridge/Southbridge on default
PCI-E 100MHz
EIST/Thermal Monitor 1&2 disabled

Now, if I try to get past that, at say 412 MHz, it will crash within seconds after booting windows. I’ve tried upping the VCore to 1.45V, lowering the multiplier to 6x, increasing northbridge / southbridge voltage by up to +0.2V, lowering memory latency (5-5-5-18/5-6-6-18), setting PCI-E freq. on auto - nothing helped.

Any ideas about that? I'm starting to think I've had bad luck with the motherboard... Thnx for any suggestions
 
RAM is Kingmax PC6400 (CL5 5-5-5-18) 1.8V

Forgot to say it, but at lower FSB (350 MHz) and at higher RAM multiplyer (2.5x) the system is stable, memory at 875 MHz , so i doubt the problem comes from RAM.
 
I’ve just checked that, the "Legacy USB storage detect" thing was already on disabled.

There must be something else… in the meantime I’ve tried jumping directly to 430FSB but it didn’t help, it’s just stuck at 400-405 MHz.
 
It might just be the memory divider you're running. Try lowering it another notch so it's well below 800mhz.
 
Its at its minimum - that is 2x on Gigabyte (equivalemnt 1x or FSB 400 on other cards)
 
Goal was to reach 3.4GHz, since the CPU should be able to take it easily (currently running 3.2GHz at 1.3V). However, if I set ram to 533 (2.5x on DS3), this would lead to 1066 MHz for the ram (@FSB 425) which I'm afraid is beyond its overclocking limit.

I'm afraid there’s a wall on my DS3 at around 410 MHz FSB, since i've tried every suggestion i could find on the net and it simply won’t get past that. :mad:

Think i'll just settle for 3.2GHz (50°C after 5 hrs of orthos). At these settings i can even enable thermal monitor 1&2 and TT Bigtyphoon runs at 600rpm.
 
Have you tried allowing your board to control both Ram timings & power?

Obviously you would set them manually long term.
 
Tried to set voltage & ram timings on auto @425FSB, the thing wont even boot. I only tried F7 and F8a bios versions, anyone had better results with previous versions?

I dont even know who makes the memory chips for Kimgmax, maybe they are D9 micron chips, though i doubt it.
 
Set your timings manually to 5-5-5-15 or so and see if you can boot higher.
 
After all, it seems it might be the RAM that doesnt like high FSB. I've just tried to see where it stops working, and it appears that it is unstable at 900MHz (2.5x360MHz), no matter the latency. So, it might be normal that it wont work at 850MHz with the higher FSB@425 MHz.

The strrange thing is that increasing vdimm voltage aint helping at all, and it wont even boot at above 2.0V.
 
mbd1979 said:
After all, it seems it might be the RAM that doesnt like high FSB. I've just tried to see where it stops working, and it appears that it is unstable at 900MHz (2.5x360MHz), no matter the latency. So, it might be normal that it wont work at 850MHz with the higher FSB@425 MHz.

The strrange thing is that increasing vdimm voltage aint helping at all, and it wont even boot at above 2.0V.
Click to expand...

My board will boot above 2.0V, but it depends on the memory timings/settings. If I change them, sometimes it won't boot above 2.0V.
 
mbd1979 said:
After all, it seems it might be the RAM that doesnt like high FSB. I've just tried to see where it stops working, and it appears that it is unstable at 900MHz (2.5x360MHz), no matter the latency. So, it might be normal that it wont work at 850MHz with the higher FSB@425 MHz.

The strrange thing is that increasing vdimm voltage aint helping at all, and it wont even boot at above 2.0V.
Click to expand...


I agree sounds like your ram, Hold out till the F8 bios, maybe you will get lucky and can go higher.
 
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