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Question About Gflops

post #1 of 8
Thread Starter 
I have been experimenting with overclocking and noticed something when stress testing with either AVX powered IBT or Linx. I've noticed some folks on here post screenshots of their Gflops and they are pretty consistent; mine on the other hand are not and I cannot figure out why. The problem is (if gflops really matter overall) is that when I initially begin a linpack run they start high (100+ but after about the 3rd run I end up in the 80+ range and it stays there. From looking at others' screenshots they remains pretty steady over 100 gflops which has me baffled. What could be causing the drops with my testing? Is it all dependent on CPU or does RAM come into play? Thanks in advance for any answers.

Jinx
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post #2 of 8
Its mostly CPU dependant... RAM only holds the problem not "solves" it.
Do you have any power saving? Better yet it sounds like it might be throttling, What are your temps?
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post #3 of 8
If you're using the computer, it will effect the results.
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post #4 of 8
Using the computer/background tasks and an unstable OC will make it fluctuate a noticeable amount.
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post #5 of 8
Thread Starter 
Well I am guilty of that, I was browsing whist the test was running. I will try again and leave it alone and see the result.
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post #6 of 8
Quote:
Originally Posted by DaJinx View Post
Well I am guilty of that, I was browsing whist the test was running. I will try again and leave it alone and see the result.
this^^ also turn off msn, antivirus etc... any running programs

how are you running the test?
you need to run it with custom ram as high or very high uses cached memory therefore lower gflops.
open task manager and under the performance tab see how much free ram you have.
eg. i have 2550mhz free, so i enter 2500 in the custom tab.
then in threads select either 2,3,4 .... depending on how many cores your cpu has.
this way you will get consistent gflops and higher gflops as well

full explanation here http://www.overclock.net/intel-cpus/...test-linx.html
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post #7 of 8
Thread Starter 
I don't use MSN but do have anti-virus up and running whenever I use Windows. I actually forgot to update this post, I disabled some unessential services and also disabled Aero and re-ran the test. I attached an image below and as you can see there was no change. For RAM I usually just select the 'maximum' setting but I will try to use custom next time. I am running Prime95 right now so when I am through with that I will try IBT again.
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i7-2600K FTW!
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post #8 of 8
Thread Starter 
Meh, got the same results; the gflops steadily decreased. I seriously believe I have a crap CPU because for some reason I can't seem to get it stable anymore. I've had it less than a month and when I first got it installed I overclocked it to 4.7 GHz prime 24 hours stable but all of a sudden a week later got a BSOD and can't get it stable anymore. I've tried a number of different settings and frequencies to no avail. I am gonna try stressing at stock and see if it fails. I'm not sure the process of returning a CPU but I got it from NCIX and if it is defective I want it exchanged.
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i7-2600K FTW!
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[Samsung 1x500GB, 1x1TB] [Samsung SH-S243D] [Noctua NH-D14] [Linux Mint/Windows 7 x64] 
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[HANNspree HF225] [Logitech EX100 Keyboard] [Antec BP550 Plus] [Coolermaster HAF 912] 
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