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Prime 95 Horror

TaKeN

TaKeN

TaKeN

Soldato
Joined
18 Aug 2005
Posts
13,173
Location
Shropshire
Ok, ive had my San Diego a couple of days now, running at 2.8 Ghz stable through all my games, with 1.6 Volts running through it. The arctic cooler keeps it nice and cool aswell :D


But, i ran Prime95 tonight, for the first time, and within seconds it went crazy,

Basically it kept saying the following

ERROR: ILLEGAL HARDWARE SUMOUT
Possible Hardware Failure, consult readme.txt restarting test.
Maximum Number Of Warnings exceeded.
Torture Test Ran 0- mins 0-errors 100- warnings
Execution Halted.
 
I cant see the chip dieing. The only thing i thought could kill a cpu was putting too much voltage through it and frying it...

I think Prime95 is just being nasty to me..
 
Ok, so here is what my overclock setting are.

FSB 255
Multi x 11
Ram Divider DDR 333
LDT 3 X
CPU Volts 1.6
RAM Volts 2.9


Should all be working fine, i havnt exceeded my Hypertransport Frequency, unless im working it out wrong :confused:
 
It's not the HyperTransport frequency - with a 255 HTT/FSB you can get away with a 4x HT multiplier to net a 1020MHz HyperTransport bus. On a 3x multiplier yours is only 765MHz - no problem with that.

Why not try dropping the CPU clock a bit, maybe to 245 or 250 HTT and see how that goes? Prime95 doesn't decide it wants to go ape - if it fails, your system is not stable. At stock speeds, it will (or should) run perfectly ok. Therefore on a stable overclock, it should also run fine.
 
Shamelessly stolen from another site :p

Its instability. the prime95 tests are based on a database which your comps results are checked against, an 'illegal sumout' means the answer it got from a calculation was either seriously messed up or just wrong. it just means you need more voltage.
Click to expand...

As a voltage higher than 1.6 probably wouldn't be a good idea just lower your sppeds a bit. Then if it isn't fixed start looking for other possibilities.
 
That happened to my o/c a while ago. It was just that it wasnt stable. Think it was memory timings were too tight or divider was unstable. Wasnt cpu on mine but that doesnt mean its not on yours.
 
TaKeN said:
ERROR: ILLEGAL HARDWARE SUMOUT
Possible Hardware Failure, consult readme.txt restarting test.
Maximum Number Of Warnings exceeded.
Torture Test Ran 0- mins 0-errors 100- warnings
Execution Halted.
Click to expand...
The *Stability* police have been notified!!!!
 
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