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post #4741 of 7371
6/21/12 at 4:20pm
Can you guys enlighten me as to why a FX-8120 gets less Gflops than my old Q9450 or Q6600 ? I would have thought it would be able to produce higher numbers, or am i missing something already covered ?
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post #4742 of 7371
6/21/12 at 4:36pm
What are you using to measure the "GFlops"?
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post #4743 of 7371
6/21/12 at 7:05pm
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The reason is instruction sets used. If the AVX or FMA4 set were used it would be much faster
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post #4744 of 7371
6/21/12 at 7:46pm
Quote:
Originally Posted by Lordred View Post

The reason is instruction sets used. If the AVX or FMA4 set were used it would be much faster

I don't think so.
two thread from a module only make its 35% faster in GFlops.
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post #4745 of 7371
6/21/12 at 8:35pm
Quote:
Originally Posted by Demonkev666 View Post

I don't think so.
two thread from a module only make its 35% faster in GFlops.

What he means is that if Mechraven is using IBT or another program that's coded using intel's compiler then the instruction sets such as SSE, AVX, FMA4 are not being used on his AMD CPU and if they were it would be much faster (do a search how intel's compilers cripple AMD CPU's).
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post #4746 of 7371
6/22/12 at 3:13am
Ok i found a seperate test to measure GFLOPS, i did originally use IBT to measure and was getting 24-30 GFLOPS.

However after running SiSoft Sandra it turns out a completely different result !!

FX-8120 3.1Ghz @ Stock Turbo enabled C1E ,C6 = 55.01 GFLOPS >> Peak Performance = 99.55 GFLOPS
Intel i5 2500K @ Stock Turbo 3.7Ghz = 56.09 GFLOPS >> Peak Performance = 78.72 GFLOPS

These results are from stock, dare to think what will happen overclocked ?? drool.gif
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post #4747 of 7371
6/22/12 at 7:56am
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As I said, its all in the instruction set.

If you find an encoding program which uses AVX or FMA4 these things fly.
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post #4748 of 7371
6/22/12 at 11:58am
Quote:
Originally Posted by Mr-Mechraven View Post

Ok i found a seperate test to measure GFLOPS, i did originally use IBT to measure and was getting 24-30 GFLOPS.
However after running SiSoft Sandra it turns out a completely different result !!
FX-8120 3.1Ghz @ Stock Turbo enabled C1E ,C6 = 55.01 GFLOPS >> Peak Performance = 99.55 GFLOPS
Intel i5 2500K @ Stock Turbo 3.7Ghz = 56.09 GFLOPS >> Peak Performance = 78.72 GFLOPS
These results are from stock, dare to think what will happen overclocked ?? drool.gif

You've just experienced the infamous Intel "CPU Dispatcher" hard at work and how it cripples AMD performance. Now if we only had a list of ALL the programs written using intel's unpatched compilers/libraries so we could know all of the "benchmarks" and other programs affected (PCMark 05 is but I'm not sure about the later versions).
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post #4749 of 7371
6/22/12 at 4:31pm

but seeings bulldozer won't run faster than a 1090T on air it doesn't matter how fast it flops back and forth

you got to remember that a 1090T is like running 12 half coars


Edited by Tweeky - 6/22/12 at 4:34pm
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post #4750 of 7371
6/22/12 at 4:58pm
Quote:
Originally Posted by Tweeky View Post

but seeings bulldozer won't run faster than a 1090T on air it doesn't matter how fast it flops back and forth
you got to remember that a 1090T is like running 12 half coars

Huh? wth.gif
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