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Fail Prime95

A

ariakasRM

Junior Member
Hi, I just got my new system up and running, here are the specs:
Athlon XP 2500+ Barton
Asus A7N8X ver 2.0
2x Kingston Hyper X 512mb PC3200 ram
Sapphire Radeon 9800 Pro 128mb
120gb Seagate baracuda 7200rpm 8mb cache
80gb WD 7200rpm 8mb cache
and some other stuff

Anyways, I wanted to overclock to 2.2ghz, which I see lots of ppl doing just by making fsb 200mhz and multiplier 11 (starts at 166x11). So, I did this and during POST it recognizes a 3200+ but I fail the first Prime95 test with a 'hardware failure' (during Lucas-Lehmer). I changed the vcore to 1.7, and it did the same thing, as well as with vcore 1.725.
I have good enough cooling with my xaserIII case (7 fans) and my slk900a heatsink with a very good 92mm fan, so I'm wondering what's going on, cuz I know tons of ppl have done this overclock easily.

Thanks.
 
Bump yor Vdimm to 2.8v

If you can't achieve it @ 1.725V try 1.75.. If you can't get there with that voltage..

Back it down.
 
Timings are important, but they should defualt to 2/3/2/6 on that Hyper X...

The reason i say bump the Vdimm is because minor stability issues normally trace back to this. ( Especially with 2+ dimms )

My overclock isn't achievable @ 2.6V at 2.8v i can Prime 95 for at least 12hours.

🙂
 
I don't know about you, ariakasRM, but do you find that the A7N8X-DX sets the VCore about .05V higher than what you set?

I personally don't think the chances of O/Cing to 3200+ speeds and being able to pass Prime95 with a decent voltage is as good as everyone makes it out to be. But then again, I'm 0 for 2 with that...
 
Wobble, I think a lot of boards overvolt .5 than undervolt.. ( NF7-S being one -- I BELIEVE )

My 8rda+ overvolts .5 also.
 
I think most newer 2500+'s are easy to get to 3200+ on stock voltage and retail hsf. I'm 2/2 with my MSI K7N2 Delta-L and DFI NFII Ultra boards, but I think using nforce2 ultra makes a difference and my stepping is an AQXEA which I think helps as well.
 
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