Tom's Hardware > Forum > CPU & Components > CPUs > Which prime95 test?
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hey guys, which prime95 test best simulates the conditions of hard gaming - like crysis? is there a specific program i can use for that besides the game itself? thanks.

------------------------------ E8500 oc'd 4.5 @ 1.44 vcore with 92mm Zalman
ATI 4850 oc'd 680/1158 with aftermarket Zalman
Asus P5Q Pro mobo
2 gigs 800 Corsair ram @ 4-4-4-12
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prime95 will not test your GPU at all... 3dmark or F&H (nvidia dont think you can on ati) might be the go there

------------------------------ "This thread made me strap on my lolerskates and head for my roflcopter."
Reply to chookman
- 0 +

chookman wrote :

prime95 will not test your GPU at all... 3dmark or F&H (nvidia dont think you can on ati) might be the go there



yeah i know, im wanting to stress the cpu though.

------------------------------ E8500 oc'd 4.5 @ 1.44 vcore with 92mm Zalman
ATI 4850 oc'd 680/1158 with aftermarket Zalman
Asus P5Q Pro mobo
2 gigs 800 Corsair ram @ 4-4-4-12
Reply to werxen

If you want to stress it, Prime will work, and find any problems for stability on your oc. Read this ongoing thread about Prime and the new P2's coming out http://www.xtremesystems.org/forum [...] ost3550584

------------------------------ I went drifting, thru the capitols of tin, where men cant walk and cant freely talk, and sons turn their fathers in
Reply to jaydeejohn

werxen wrote :

yeah i know, im wanting to stress the cpu though.



Apologies, your question seemed worded for testing Crysis which is more GPU bound.

------------------------------ "This thread made me strap on my lolerskates and head for my roflcopter."
Reply to chookman
- 0 +

chookman wrote :

Apologies, your question seemed worded for testing Crysis which is more GPU bound.



its all good. what i was aiming at however was doing the CPU stress test on crysis benchmark and attempting to mimic that situation with prime95.

------------------------------ E8500 oc'd 4.5 @ 1.44 vcore with 92mm Zalman
ATI 4850 oc'd 680/1158 with aftermarket Zalman
Asus P5Q Pro mobo
2 gigs 800 Corsair ram @ 4-4-4-12
Reply to werxen

prime95 will stress your cpu more than crysis can.

Reply to zodiacfml
- 0 +

zodiacfml wrote :

prime95 will stress your cpu more than crysis can.




ok WHICH prime95 option would best simulate a game LIKE crysis then? im going crazy here lol

------------------------------ E8500 oc'd 4.5 @ 1.44 vcore with 92mm Zalman
ATI 4850 oc'd 680/1158 with aftermarket Zalman
Asus P5Q Pro mobo
2 gigs 800 Corsair ram @ 4-4-4-12
Reply to werxen
- 0 +

No game really stresses a CPU like Prime95 does, if you pass a Prime test then you should be okay for any game.

Reply to chiller
- 0 +

Prime95 Small FFT will do the trick. Make sure its Prime95 v25.6 or later (multi core support) and under the worker thread option put the number of CPU cores your machine has.

Reply to JDocs
- 0 +

JDocs wrote :

Prime95 Small FFT will do the trick. Make sure its Prime95 v25.6 or later (multi core support) and under the worker thread option put the number of CPU cores your machine has.



thank you. took 500000 replies but i finally got what i was looking for.

------------------------------ E8500 oc'd 4.5 @ 1.44 vcore with 92mm Zalman
ATI 4850 oc'd 680/1158 with aftermarket Zalman
Asus P5Q Pro mobo
2 gigs 800 Corsair ram @ 4-4-4-12
Reply to werxen
- 0 +

I have a really old version, but mine does sort of explain. I thought small really stressed the processor (only) and large would stress the CPU a little less but would stress the RAM extensively. Did they add more choices since then?

------------------------------ Phenom II X4 940 BE 3.0GHz - 1.25V > GA-MA790GP-DS4H > XFX ATI 4850 1GB > 4GB OCZ Platinum 1066MHz 5-5-5-15-2T > PCP&C 610W
Athlon II X2 250 3.0GHz > GA-MA770T-UD3P > Sapphire ATI 4650 512MB DDR3 > 4GB OCZ Platinum 1600MHz@1066MHz > XP/Win7 Enter 64
Reply to EXT64
- 0 +

I would say Blend. That closest approximates how a game can use your core. But a game probably won't use all 4 cores like P95 can. If you're anal, you can reduce the # of threads so as to achieve maximum OC for a particular # of game threads.

Small FFTs don't even stress the caches on some modern chips. They're often the first things to fail.

Reply to Wr

GTA4 heheh

------------------------------ I went drifting, thru the capitols of tin, where men cant walk and cant freely talk, and sons turn their fathers in
Reply to jaydeejohn
- 0 +

GTA4 appears to use 3 threads, and not always at full load depending on how fast the CPU is relative to the GPU.

Reply to Wr

I know, and some have said 4 as well, but mainly I was kidding heheh, as if that game is worthy for the perf you get from the HW thats used

------------------------------ I went drifting, thru the capitols of tin, where men cant walk and cant freely talk, and sons turn their fathers in
Reply to jaydeejohn
- 0 +

OK:

Use SmallFFT if you want the absolute maximum CPU core stress, and don't care about anything else

Use Blend if you want to stress the core, the memory, and the interface, but don't need to stress the core to its absolute maximum (it won't stress the core as hard as SmallFFT)

Reply to cjl
- 0 +

werxen wrote :

thank you. took 500000 replies but i finally got what i was looking for.




Rather then waste CPU power on nothing how about you encode DVD's to DIVX/XVID'S, that will stress your CPU at 100% for a good 40 minutes but at the end of it you get something useful. Just a thought.

Reply to JeanLuc
- 0 +

JeanLuc wrote :

Rather then waste CPU power on nothing how about you encode DVD's to DIVX/XVID'S, that will stress your CPU at 100% for a good 40 minutes but at the end of it you get something useful. Just a thought.



how about instead of wasting your time posting useless information in my thread you go jump off a cliff?

------------------------------ E8500 oc'd 4.5 @ 1.44 vcore with 92mm Zalman
ATI 4850 oc'd 680/1158 with aftermarket Zalman
Asus P5Q Pro mobo
2 gigs 800 Corsair ram @ 4-4-4-12
Reply to werxen
- 0 +

I thought blend just runs large then small in small sets and keeps alternating. I'm not certain, but that's whet it looked like mine was doing last night when I gave it a try.

------------------------------ Phenom II X4 940 BE 3.0GHz - 1.25V > GA-MA790GP-DS4H > XFX ATI 4850 1GB > 4GB OCZ Platinum 1066MHz 5-5-5-15-2T > PCP&C 610W
Athlon II X2 250 3.0GHz > GA-MA770T-UD3P > Sapphire ATI 4650 512MB DDR3 > 4GB OCZ Platinum 1600MHz@1066MHz > XP/Win7 Enter 64
Reply to EXT64
- 0 +

It might, but that would give you a good mixed workload to stress everything.

Reply to cjl
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