Prime95 error running at stock

[yunta]

I've got my rig running at stock now. (first rig on my signature)
I ran prime95 v25.7 and after 9 hours it was cancelled by error in calc.
i set the default values (Corsair VS512MB400 = 2.5-3-3-8 and 2.5v)

I ran memtest test #5 and #8 ten times and all the test for 3 hours and don't have any error.
I change the voltage of ram
Voltage = 2.6V
Ram Temperature ok, i added a fan too.
Ran prime95 again and after 10 hours it was cancelled
I can't decrease to 2.4 there is no option in my setup (or i don't know to set it).

Any idea ?

THx in advance.

[Sparky]

Which version of prime?

I had an issue with one version that it would error out all the time but there was a bug apparently with it that it didn't like my hardware or something like that. Regardless of what the hardware was set to it would error on me even though there really wasn't a problem.

[Particle]

Try increasing your vCore to see if it is a CPU problem instead.

[yunta]

Hi !!!
I'm using Prime95 V25.6 build 6 at this moment.
The errors :
1- Test
[Nov 23 09:38] Test 1, 900 Lucas-Lehmer iterations of M77497473 using FFT length 4096K.
[Nov 23 09:38] FATAL ERROR: Rounding was 0.5, expected less than 0.4
[Nov 23 09:38] Hardware failure detected, consult stress.txt file.
[Nov 23 09:38] Torture Test ran 10 hours, 10 minutes - 1 errors, 0 warnings.
[Nov 23 09:38] Work thread stopped.

2-test
[Nov 29 11:19] FATAL ERROR: Rounding was 0.4951171875, expected less than 0.4
[Nov 29 11:19] Hardware failure detected, consult stress.txt file.
[Nov 29 11:19] Torture Test ran 9 hours, 51 minutes - 1 errors, 0 warnings.
[Nov 29 11:19] Work thread stopped.
How many hours of prime95 test is good for a stable rig ?, i'd like to learn and begin overclocking my rig, but i want to make a correct 'step by step'.

[Particle]

If it ever errors, you aren't stable. Most of us will let it run two days or less. No errors in two days means you're pretty solid.

[mockingbird]

Why don't you run the whole gammut of Memtest tests??

Also are you using Memtest 3.0 or Memtest 86+?

Can you loop a program like 3Dmark and see if it lasts through the night?

[yunta]

I ran memtest86+ (it's in the DFI's setup), i ran first all the tests during 3 hours , then i ran only tests #5 y #8 ten times on each one (i read this in a build guide) and don't have error with this.

[Particle]

Sometimes memory errors can be quite insidious. I've got a DIMM right now that only has one bad bit for every 12+ hours of memtest.

[yunta]

Hi Particle, first at all, i'll try with your recommendation (increase Vcore) and run prime95 again.
Do you know wich Ram is better for my dfi ? Corsair value select (actual), corsair XMS or OCZ4001024PF ?

[Brother Esau]

Corsair and D.F.I NF4 were notoriously bad together! (Well Documented) G-Skill ,OCZ, Mushkin is what I would opt for

[roofsniper]

with my phenom 9600 and corsair dominator 1066 i also get errors at stock on prime. i get errors on other things as well but i think my problem is related to some B2 phenoms not being JEDEC certified for 1066.

[soundood]

in the memory Dept, i have had two sets of memory fail on me, with my Phenom set up, 1066 crucial Ballistix, and a set of 1066 corsair, running OCZ now, with no problems.

[roofsniper]

in the memory Dept, i have had two sets of memory fail on me, with my Phenom set up, 1066 crucial Ballistix, and a set of 1066 corsair, running OCZ now, with no problems.

i got my corsair dominator thinking it was the best without reading any reviews. i have had issues with it since the second i popped it into the slot. now that i have been thinking about getting 4gb of ram i have been looking around and the dominators really don't seem that impressive. im thinking i might get some ocz as well.

[yunta]

Great !!!
Prime95 test for 50+ hours without errors !!!
I set DRAM voltage to 2.7 and the CPU voltage is 1.37 (default).
Now i'll try to overclock my rig, any comments or guides will be appreciated.

Thx to all XS-friends for help me in my firsts steps.