How To: Benchmark your CPU with Prime95

[rugbyrules1929]

at 00:41 does he say this is the home of the gimps project? XD

[demonsparkx]

is it bad that my cpu only peaked at 51% load?

[angelr91]

L1 cache size: 16 KB L2 cache size: 2 MB, L3 cache size: 8 MB L1 cache line size: 64 bytes L2 cache line size: 64 bytes L1 TLBS: 32 L2 TLBS: 1024 Prime95 64-bit version 25.11, RdtscTiming=1 Best time for 768K FFT length: 11.020 ms. Best time for 896K FFT length: 13.360 ms. Best time for 1024K FFT length: 15.322 ms. Best time for 1280K FFT length: 19.728 ms. Best time for 1536K FFT length: 23.766 ms. Best time for 1792K FFT length: 29.258 ms. Best time for 2048K FFT length: 32.355 ms.

[angelr91]

So i ran prime95 at the test just stressing out the cpu and when I woke up in the morning I see that my computer is on however, when I move my mouse I see the login screen and I log in and it feels like everything is starting up again however, I look at the results and there is no word on it failing how do I know if prime95 failed or did it finish completely?

AMD FX(tm)-4100 Quad-Core Processor 

CPU speed: 3592.33 MHz, 4 cores

CPU features: RDTSC, CMOV, Prefetch, MMX, SSE, SSE2, SSE4

[rsx123]

If you have an aftermarket cooler, put a 120mm fan maybe 4-5 inches away from the intake. I dropped my temps by 7-8 degrees doing that with a CM N520. Fucking amazing. I'm at 3.6Ghz at 1.35vcore on a PII 955 BE with a shitty fucking cooler. Couldn't even get 3.4 without the fan trick.

[SuperMangn]

My standard i5-2500k scores the same as an average i7-2600 and more than an average 2500k overclocked by 30%.

[dqrp6435]

hey guys... been running this off and on for the last few days checking my cpu...

anyone out there, im looking for a STABLE OC... got a intel core quad extreme (qx6800) stock is 2.93ghz, its on 3.2 right now, how high can i go and where should the voltage be?? using a antec freezer 7 pro cooler...

[BIOSHOCKFOXX]

where the hell is that results.txt file anyway ? do i have to make my own in anyplace or what ? wtf ? It would be great if he makes automatically in the folder with prime95.exe ,otherwise, shows that it's in results.txt, but there isn't such file in my PC.

[BIOSHOCKFOXX]

@BIOSHOCKFOXX and after it all finished with the benchmarking, i can't find the results, full place of texts, watching the comments here, i can't find the line "Best time for 768K FFT length: ****** ms. etc, some other stuff is showing up.

[BIOSHOCKFOXX]

@BIOSHOCKFOXX is this the right one ? - 

768K FFT length. Best time: 7.381 ms., avg time: 7.504 ms.

896K FFT length. Best time: 8.995 ms., avg time: 9.122 ms.

1024K FFT length. Best time: 9.910 ms., avg time: 9.980 ms.

1280K FFT length. Best time: 12.841 ms., avg time: 12.944 ms.

1536K FFT length. Best time: 15.657 ms., avg time: 15.784 ms.

1792K FFT length. Best time: 18.953 ms., avg time: 19.010 ms.

2048K FFT length. Best time: 20.885 ms., avg time: 21.032 ms.

i7 2600k

[McPePsii]

Best time for 768K FFT length: 2.200 ms., avg: 2.319 ms.

Best time for 896K FFT length: 2.674 ms., avg: 2.778 ms.

Best time for 1024K FFT length: 2.968 ms., avg: 3.078 ms.

Best time for 1280K FFT length: 3.711 ms., avg: 3.883 ms.

Best time for 1536K FFT length: 4.430 ms., avg: 4.741 ms.

Best time for 1792K FFT length: 5.530 ms., avg: 5.680 ms.

Best time for 2048K FFT length: 6.097 ms., avg: 6.412 ms.

Best time for 2560K FFT length: 7.698 ms., avg: 7.904 ms.

I <3 intel core i5 2500k

[rsx123]

@McPePsii What's your core speed?

[McPePsii]

@rsx123 When I did it I was either on factory setting or I might have changed turbo to 4.0 either way its not a big jump

[rsx123]

@McPePsii what's your cpu voltage? I just got mine down to 1.30volts at 3.8ghz on a shitty Hyper N520. Lowering you Vcore helps temps A LOT. This CPU is beast.

What is your CPU volt at? Try 3.8 at 1.35 volts then go down if you can.

[Sam737loverfsx]

please help !! i have a problem my cpu is not running at 100% with the benchmark test is that normal ??

[SapphireHD5850Xtreme]

Best time for 768K FFT length: 4.267 ms. Best time for 896K FFT length: 5.352 ms. Best time for 1024K FFT length: 5.770 ms. Best time for 1280K FFT length: 7.406 ms. Best time for 1536K FFT length: 9.006 ms. Best time for 1792K FFT length: 10.804 ms. Best time for 2048K FFT length: 12.098 ms. Best time for 2560K FFT length: 15.195 ms. Best time for 3072K FFT length: 18.998 ms. Best time for 3584K FFT length: 23.508 ms. Best time for 4096K FFT length: 28.005 ms

[papercut272]

what with the 1 core @ 2009?

[landy1337]

Self-test 12K passed!

Self-test 12K passed!

Self-test 12K passed!

Self-test 12K passed!

FATAL ERROR: Resulting sum was 464463626784257, expected: 431679523420395.1

Hardware failure detected, consult stress.txt file.

Any ideas?

[ACSBarker]

when you benchmark your cpu, only 1 thread is being used right? which means that only 1 out of your x number of cores is being stressed?

[santoroma17]

Best time for 1280K FFT length: 20.202 ms. Best time for 1536K FFT length: 24.643 ms. Best time for 1792K FFT length: 29.964 ms. Best time for 2048K FFT length: 33.648 ms. Best time for 2560K FFT length: 44.791 ms. Best time for 3072K FFT length: 54.607 ms. Best time for 3584K FFT length: 66.241 ms. Best time for 4096K FFT length: 74.696 ms. Best time for 5120K FFT length: 96.244 ms. Intel(R) Core(TM) i3 CPU 550 @ 3.20GHz CPU speed: 3200.11 MHz, 4 cores How is this

[deathlygost22]

what times do i use? would i use" Prime95 64-bit version 26.6, RdtscTiming=1"

or would i use "Timing FFTs using 6 threads."

[Gireesh092]

Can i overclock my Core 2 duo E4500 on D945GCNL ?? Pls reply ... I want to increase the speed frm 2.2GHz to atleast 2.6GHz... 

[darkwizzy1o]

Best time for 768k FFT length : 2.941 ms. Best time for 896k FFT length : 3.359 ms. Best time for 1024k FFT length : 4.579 ms. Best time for 1280k FFT length : 3.954 ms. Best time for 1536k FFT length : 4.751 ms. Best time for 1792k FFT length : 5.544 ms. Best time for 2048k FFT length : 6.179 ms. Best time for 2560k FFT length : 8.140 ms. Best time for 3072k FFT length : 9.838 ms. 3584k 11.952ms 4096k 13.294ms 8192k 27.652ms i5 2500k @ 3.9GHz :) could get it easily over 4.5GHz

[Gummientenkillass]

My best result is 8 ms with an AMD Phenom II 1090 T Black Edition @ 4.2 gHz (overclocked)

[IntoTheDarknesss]

is this normal? Intel E5300 Pentium Dual Core 2.6 GHz @ 2.84 GHz Best time for 768K FFT length: 7.841 ms., avg: 7.997 ms. Best time for 896K FFT length: 9.182 ms., avg: 9.342 ms. Best time for 1024K FFT length: 10.371 ms., avg: 10.539 ms. Best time for 1280K FFT length: 12.963 ms., avg: 13.287 ms. Best time for 1536K FFT length: 15.781 ms., avg: 16.123 ms. Best time for 1792K FFT length: 18.883 ms., avg: 19.179 ms. Best time for 2048K FFT length: 21.490 ms., avg: 21.769 ms. ...

[johanhendriks]

@IntoTheDarknesss

No is not normal, you should disconnect your pc immediately before it will come to life and eat you.

[Kakebolla]

Best time for 768K FFT length: 3.770 ms.

Best time for 896K FFT length: 4.553 ms.

Best time for 1024K FFT length: 5.084 ms.

Best time for 1280K FFT length: 6.289 ms.

Best time for 1536K FFT length: 7.593 ms.

Best time for 1792K FFT length: 10.359 ms.

Best time for 2048K FFT length: 11.581 ms.

Best time for 2560K FFT length: 14.319 ms.

Best time for 3072K FFT length: 18.435 ms.

AMD Phenom || 955 overclocked to 3.6 GHz can that be right????

[CyphenPhsyX]

@Kakebolla

Sounds great to me ;) so much faster then my 555 BE :P 3.6Ghz OC but will be going to 4Ghz on air ;P

[the14u36]

i have a question. i went to the store and got 1500 worth the parts. everythign except a new power supply becuase i didnt need one. i told the guy at the store i wanted to run at ddr3 2000. so he sold me a board with ddr32000 printed on the box. and then he sold me ddr3 2000 excelleram ram 4 gigs/ now matter what i do this ram will only run at 1833 anything over that i get error on prime 95 and blue screen saying ram defective. doss ram test also shows issues. but again at 1633 its ok.

[FlippyCatFanMan]

Is This Good? xT Best time for 768K FFT length: 12.381 ms. Best time for 896K FFT length: 15.068 ms. Best time for 1024K FFT length: 17.008 ms. Best time for 1280K FFT length: 21.434 ms. Best time for 1536K FFT length: 25.876 ms. Best time for 1792K FFT length: 31.107 ms. Best time for 2048K FFT length: 35.163 ms. Best time for 2560K FFT length: 46.787 ms. Best time for 3072K FFT length: 57.123 ms. Best time for 3584K FFT length: 69.145 ms. Best time for 4096K FFT length: 78.128 ms.

[mickifree12]

can someone help me, i run a quad core, and when i benchmark in prime95 it only goes up to CPU#3, is there suppose to be a CPU#4??

cuz i think when i had mine running at 3.4ghz, it showed a CPU#4, but when i increased my OC.... it stopped showing #4

[saikimimaru]

So if i overclock and run this benchmark, if it doesn't crash by the end then i am fine?

[SavaMarkovicPilot]

@saikimimaru yep..but i recommend using LinX for 2-3 hours too..CPUs can pass prime95 and than fail in LinX..

[SavaMarkovicPilot]

@saikimimaru Also don't do the benchmark ...just select the first option and run it for 6-8 h and than LinX for 2-3h

[saikimimaru]

@SavaMarkovicPilot I am not looking forward to stressing my cpu for 8 hours lol. That seems like overkill to me. It's not like i'll be using 100% of my cpu for hours on end lol

[SavaMarkovicPilot]

@saikimimaru if you are gonna overlclock you gotta do it..

I made a mistake in the first comment..Just run LinX for 2-3h and you are fine :D

[mushufreak]

Doesn't anyone notice the date which this was posted? R.I.P

[GamerJock]

Using 8 Threads Best time for 768K FFT length: 4.270 ms. Best time for 896K FFT length: 4.927 ms. Best time for 1024K FFT length: 6.353 ms. Best time for 1280K FFT length: 6.523 ms. Best time for 1536K FFT length: 8.047 ms. Best time for 1792K FFT length: 9.209 ms. Best time for 2048K FFT length: 10.808 ms. Best time for 2560K FFT length: 13.957 ms. Best time for 3072K FFT length: 17.238 ms. Intel Core i7 860@3.94Ghz

[AznShigsta]

What does it mean if my benchmarks were lower than the benchmarks on the mersenne(compared with the same type of CPU as mine) and my CPU usage during the stress test was less than 5% on the task manager, while yours was at 100%? and my cpu was overclocked.

[1AppleMaker]

@AznShigsta It means that your processor can perform much faster than those with higher numbers. Congratulations!

[AznShigsta]

@1AppleMaker Nah I figured it out, if its not at 100% that means I didn't stress test anything because when stress testing you are suppose to find a way to get the CPU to 100% usage to see if the CPU will stay stable at that point.

[proxim10]

Timing FFTs using 2 threads. Best time for 896K FFT length: 8.053 ms. Best time for 1024K FFT length: 9.374 ms. Best time for 1280K FFT length: 11.618 ms. Best time for 1536K FFT length: 13.852 ms. Best time for 1792K FFT length: 16.994 ms. Best time for 2048K FFT length: 18.763 ms. Best time for 2560K FFT length: 24.892 ms. Best time for 3072K FFT length: 29.901 ms. Best time for 3584K FFT length: 35.945 ms. Best time for 4096K FFT length: 40.843 ms. Core 2 Duo E6750 OC 3.3 Ghz

[tech2kn0w]

So the program is saying I have some hardware problems but I don't know what kind says something like "FATAL ERROR: Rounding was 0.5, expected less than 0.4" and "Hardware failure detected, consult stress.txt file" and "Torture Test ran 0 minutes - 1 errors, 0 warnings."

They suggest 2 problems. 1. I have a bad computer. 2. I have hardware problems.

I have a good pc so I am confused what the hardware problem IS. I have a AMD Athlon II x4 stock speeds and Windows Experience Index score is 7.2

[Bobby2Hotty83]

wow

[Bobby2Hotty83]

Best time for 1024K FFT length: 18.291 ms Best time for 1536K FFT length: 27.302 ms. Best time for 1792K FFT length: 33.253 ms. Best time for 2048K FFT length: 37.784 ms. Best time for 2560K FFT length: 49.902 ms. Best time for 3072K FFT length: 60.340 ms. Best time for 3584K FFT length: 73.755 ms. Best time for 4096K FFT length: 83.382 ms. Best time for 5120K FFT length: 106.784 ms. Best time for 6144K FFT length: 126.581 ms Best time for 7168K FFT length: 154.230 intel i3 530 6 gig ram ddr3

[CodeNashor]

hey there! i got a lil question: Might it be possible that my cpu works FASTER when i use my q6600 @ 3.0 ghz with a standard cpu-voltage than using it @ 3.2 Ghz with a normal voltage? or does higher Ghz automatically mean faster? becuz thats what i did, im here at 3.2 ghz and still standard voltage and i feel like games worked better with 3,0 Ghz and standard volatge? So is it possible or am i haluzinating? THANKS!!!

[XtraLongChiliCheese]

Best time for 768K FFT length: 15.439 ms.

Best time for 896K FFT length: 18.776 ms.

Best time for 1024K FFT length: 21.220 ms.

Best time for 1280K FFT length: 27.068 ms.

Best time for 1536K FFT length: 32.322 ms.

Best time for 1792K FFT length: 39.537 ms.

Best time for 2048K FFT length: 44.537 ms.

Best time for 2560K FFT length: 58.585 ms.

Best time for 3072K FFT length: 70.257 ms.

What is wrong :(

[gaslampcomputers]

You should include your CPU type with your results. Your numbers are pretty average.

[XtraLongChiliCheese]

its a LOW AMD x3 720BE , but i unlocked the 4th core and i overclocked from 2,8 ghz to 3,0 ghz .

It cant bE :D

[gaslampcomputers]

I would expect slightly better results given OC, but your numbers fall well within the range of reasonable results. If you filter the results page for only 32-bit benchmarks, you actually perform better than average.

[mcmamac]

@XtraLongChiliCheese what processor?

[S3b1Videos]

@XtraLongChiliCheese 768K FFT - 3,070ms

8192K FFT - 45.674ms

:)

[2ttsi]

When i run the benchmarking test, my Core #0 runs at 100% all the time, but the Core #1 jumps from 0% to 100% all the time.

Why?

[sjclark09]

How do you find the results.txt file?

[2ttsi]

You find the result txt file in the same folder as you have the program

[scatmanwfm]

Nice video very helpful. Thanks!

[numptybaws3]

I just ran prime95 and looked at my results what else can I do with the program?

[gaslampcomputers]

@numptybaws3 You can join the Great Internet Mersenne Prime Search (GIMPS) and donate your spare CPU cycles to search for very large prime numbers. I link to the GIMPS site in the info.

[CerealzTheDude]

kewl vid