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Low IBT Gflops (2600k OC'd)

post #1 of 13
Thread Starter 
So i've been trying to fix this for a month or two: my 2600k scores rather low on IBT - only around 90gflops. Meanwhile I see people getting 130 with a 2500k at the same speed. Whats up with this?

I've tired the obvious like increasing voltages (the CPU is stable - at least 8 hours straight prime no problems), using the AVX thing, Win 7 SP1, etc. none of them give any better results.

/edit

Running both Linx and IBT again (with AVX) I got between 103-109Gflops - still fairly low (imo). Also, with IBT, my CPU usage starts at 100% like it should, but after about 20 seconds it drops to 50-52%. Then in the last few seconds of the 'batch' or 'run', it goes up to 100% again.

Mathematically I should score approximately 150gflops :/
Edited by doomlord52 - 9/7/11 at 6:58pm
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post #2 of 13
Depends on the ram your using and how much is used in the test. More ram = less gflops so people getting 130gflops might only have 2 gb of ram or only using 2gb in the test.
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post #3 of 13
Thread Starter 
It seems to me that more ram used = higher Gflops. At 4gb I get 103-109 Gflops, but going down to 1gb I get only 93-98glops.
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post #4 of 13
run it on "high" the 2gb used one.

I hit about 109-110 on mine at only 4.3ghz

My macbook pro hits 50 at only 100 degrees (lol)
post #5 of 13
Thread Starter 
Quote:
Originally Posted by Syjeklye;14859998 
run it on "high" the 2gb used one.

I hit about 109-110 on mine at only 4.3ghz

My macbook pro hits 50 at only 100 degrees (lol)

I tried 2gb and it gave me about 99gflops. Basically 10% less than yours at 10% higher clock.
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post #6 of 13
Disable HT.
    
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post #7 of 13
Quote:
Also, with IBT, my CPU usage starts at 100% like it should, but after about 20 seconds it drops to 50-52%. Then in the last few seconds of the 'batch' or 'run', it goes up to 100%


ummmm it does that during the run?? sounds like it's throttling. set CPU Core Current limit to 140% and test again.
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post #8 of 13
Thread Starter 
Quote:
Originally Posted by munaim1;14860890 
ummmm it does that during the run?? sounds like it's throttling. set CPU Core Current limit to 140% and test again.

Done that. Also it only does that with IBT, Lynx doesnt do that - but they both give the same Gflops. In addition when I do other CPU intense stuff (for example, render) it can stay at 100% usage at full speed for the whole time (sometimes hours).

Also disabling HT didnt do that much last time I tried, but ill try again.
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post #9 of 13
it may sound crazy but i would try to reaset your cpu (check your pins while you there)
    
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post #10 of 13
Sorry for 4 week bump, but I just checked my IBT run (v2.52) and at 4.8Ghz, 16GB ram, maximum stress level, HT on + 50% usage I only get 70 gigaflops. So dunno really...we may have dog cpus. According to AIDA64, it's 50% usage, 0% throttling.
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