PRIME95 doesn't like me!

[Cyrix_2k]

OK, so I go to run the PRIME95 toture test on the machine in my sig, and it gives me the following error:
Thu Jan 09 22:54:00 2003]
FATAL ERROR: Rounding was 0.4967575073, expected less than 0.4
Hardware failure detected, consult stress.txt file.


It does this every time! Help! This is after I've played Counter-Strike for a few hours. No crashes. SiSoft Sandra runs fine too. Any suggestions?

[Mizzery]

I'd back off your o/c or up the vcore and see if it goes away. If it still doesn't then i don't know where to point you.

I've had my machine stable under one tortue situation, and die quickly under another several times.

[c627627]

The point of testing is to see if you get errors or not thus testing the stability. The meaning of errors themselves is not as important.

1.55 volts? Forget about it.
Gradually hit 1.8 then complain.

Who cares about SB Live MP3+. Where's the RAM and the brand of PSU?
Most importantly, where's the FSB?

_____________________
2100+ AIUHB 0248 MPMW
256MB Crucial PC2100 + 2x 256MB Kingston (Hynix chip) PC2100 @ 6 3 3 2
[152] FSB x 15 = 2280 MHz @ 1.8 Vcore with memory frequency at 100% [152] @ 2.77 Vdimm
37(min) C to 46(max) C Winter ; 42(min) C to 50(max) C Summer
Epox 8RDA+
Thermalright SK-7 with variable speed 80x25mm YS-Tech FD1281259B-2F
BFG GeForce4 Ti4200 8X 128MB; Antec SX-835II case ; 350W Antec SmartPower SL350
Five 80x25mm Ultra Quiet 18CFM Case Fans (NMB C3110KL-04W-B19)

[Deathknight]

Your system isn't 100% stable plain and simple. Its the reason that prime95 is used to test for stability. If you can pass a 12 hour rune of prime95 then you are pretty much stable.

[c627627]

:eek:... Wait a minute, I just noticed something, Deathknight, what a heck is that in your sig??

2.8 GHz? Shurely shome kind of mishtake.... that's like in the 4000+s.

What's the story there?

[Deathknight]

I love my promy :cool:

[c627627]

Hot diggidy, [thread hijack in progress] how much?
+
Isn't that RAM supposed to do 233 FSB at default?

[Deathknight]

$625 with the case at :
http://www.xtwerkz.com/vapor_cooling_mach_1.htm

Yeah my ram can easily handle more fsb. I had my fsb up at 231 but I have changed northbridge cooling, video card cooling and cpu cooling all very recently and I haven't gotten everything tweaked back to where it should be yet.

My main work box and folder is down right now so I decided to keep this thing where it is stable till I get it back up.

[c627627]

What is the PR rating of 2.8 GHz?

[Deathknight]

Sanrdra is reporting PR of 4048 :D

[c627627]

...and the highest rated CPU $ can buy is a 3200+. I am speachless. Congratulations! [thread hijack over]

[Deathknight]

Thanks ;) Its been alot of fun and the tweaking is still ongoing. Now maybe next year some time I will get my hands on an athlon 64... :drool:

[Melhisedek]

What are your 3DMark scores ? And some game benches if you got time =)

[Cyrix_2k]

Ok, I've got a generic 550watt PSU. Yes I know it's piece of junk but I don't have enough money to buy a new one yet. Next, I'm running one 512mb PC3200LL from corsair. My fsb is 200.

[Cyrix_2k]

I just upped the vcore to 1.8v. Didn't help. I barely got into windows and it crashed. The mobo gave me a two tone siren/beep too. Right now, I'm running @ 1.65v. This cpu should do 2 ghz no problem. I've got excellent steppings: AXDA2000DUT3C Y838656280083
AIUMB 0318SPAW
Anything eles I can do?

[c627627]

Thank you for saying thay you have 200 FSB running.
If you can't do 200 FSB at 1.8 v, time to try a significantly reduced FSB, maybe even with a higher multipler later.

It's very difficult to accept I know, but 550W does not mean sh*t because even a 300W Fortron is a better choice than a 550W cheapo.

There are dozens upon dozens of threads where the name brand PSU is the only change that ended up allowing people to OC in the 200s FSB with the resulting 2.3 GHz in speed. It may or may not be the soultion for you but you should be aware of such examples.

[Cyrix_2k]

I know my PSU's a piece of sh*t, but all my voltage's are good. My +12 rail is 11.97v. That's the only undervolted rail. I'd really hate to have to give up my 200mhz FSB, it really helps me performance wise. I guess I to though. BTW, the PSU cost $4 brand-new!

Thanx for all your help.
And I'm getting ready to run 3dmark

[c627627]

:eek: Did you just say you paid four dollars for a no name power supply and as a side note you're a little miffed you have to give up overclocking to over 200 FSB (!) ... hehehe.... party's over in this thread.

[Deathknight]

Originally posted by Melhisedek
What are your 3DMark scores ? And some game benches if you got time =)

Um I think my last 3dmark2001 was like 18465 or so. Its a recent rebuild so I don't really have alot of software installed on it. Mostly I have been testing for stability so far so I haven't gotten around to alot of benchmarking or game installing yet.

[Cyrix_2k]

Ya I paid 4 bux for it. Hey it's "AMD approved" :D I know it's a piece of sh*t, but all my voltages are good. Shouldn't that be enough? And when I get enough money, I'm buying a 480watt Trupower.

BTW: I got 9739 3DMARKS @ 200 FSB. My computer didn't crash. PRIME95 doesn't crash it either, it just reports and error. Also, the mobo's stock. I haven't added any heatsinks yet. I need to pick up some artic alumina epoxy.

[c627627]

Prime95 is not supposed to crash it. It's supposed to display an error indicating instability (Type of error is not important). If the error is after 8 hours of Torture test, it's a slightly higher overclock than your system can take.

If the error is displayed in less than 30 minutes, step back. If the error comes in less than 15 minutes, you're way overboard on your OC.

12 hours of Torture Test, no error, you get to display the OC in your sig as a successful OC.

[Cyrix_2k]

Thanks for clearing that up.

As an update, I let the ram run slower and it passes now. I'm now going to let it run for 24 hours and see what happens. And yes, I'm running at 1.55vcore.

[substratus]

Originally posted by c627627
Prime95 is not supposed to crash it. It's supposed to display an error indicating instability (Type of error is not important). If the error is after 8 hours of Torture test, it's a slightly higher overclock than your system can take.

If the error is displayed in less than 30 minutes, step back. If the error comes in less than 15 minutes, you're way overboard on your OC.

12 hours of Torture Test, no error, you get to display the OC in your sig as a successful OC.

Excellent explanation of how to use prime. :)

[funnyperson1]

Prime95 isnt the poster child everyone makes it out to be, it has bugs. I have had it give me errors every time I ran it on my tualatiin system within 3 minutes. This is even though I could game for hours. A couple months later a new version of prime didn't give me errors at all.

Just because he is getting errors doesn't mean that his computer is unstable.

[Cyrix_2k]

Hi funnyperson,

I think you're right. I downloaded a new vesion and now I don't get errors! This awesome! Thanx. I did have to up the vcore to 1.65v, though.

[c627627]

Most members of this forum agree that latest version of Prime95 is a place to start cheking the stability of your overclocked system. Of course you need to do 3DMark after Prime95.

... and yes there are programs that can raise temps more than Prime95 can. Programs like Toast (don't know web address), or maybe this one http://users.bigpond.net.au/cpuburn/

... but latest bug fixed 12 hour Prime95 Torture Test is what seems to be near universally forum accepted start of talking whether a newly OC'd system appears to be stable or not.

[Cyrix_2k]

Thanx for the info c627627. I'm going to try that cpu burn-in program and see wht happens. Also, Prime95 ran 18+ hours error free. I shut it off so I could fold.

[funnyperson1]

18 hours is very good. Most agree on 12 hours as the benchmark for stability.

[Cyrix_2k]

That's good news. :) That really cheered me up. I spent all this money on my sytsem and for it not to be Prime95 stable at 2ghz was unacceptable. Then again I guess I'm lucky considering the PSU I've got.

Thanx for all the help!

[Kango]

you may try Hot CPU Tester from http://www.7byte.com This program stress your cpu & memory and all the different components. It stress so much that you can barely move your mouse cursor.

[Cyrix_2k]

Thanks for the suggestion, Kango. I'm going to run it as soon as I get off the forums.