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FX-4100 4.6Ghz vs Phenom X4 9950 3.0Ghz in CB 11.5

post #1 of 42
Thread Starter 
No Bias here, these are just my cinebench results.



FX-4100 @ 4.6ghz scores 3.56

Phenom 9950 @ 3.0ghz scores 3.32

If this isnt a sign of something being amiss, I dont know what is.

I will post screenshots after I finish with other comparisons.

*update*
388

Note that (as far as I know) CB only uses the SSE2 codepath for FX and Agena processors while both support at least SSE3 and the FX supports AVX. FX using AVX should be a good bit faster, but I dont have any AVX enabled benches from the FX-4100.

*update 2*

9950 results with single core and scaling numbers... I have no idea how the scaling is above 100%. Just ran them after a clean install. only difference is that the NB is overclocked to 2.2ghz.

700
Edited by KarathKasun - 1/18/12 at 10:44pm
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post #2 of 42
you are correct sir, something is amiss.
post #3 of 42
Sounds about right.. IPC on bulldozer is about on par with agena.
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post #4 of 42
Thread Starter 
No, this means its massively below Agena... MASSIVELY.

If it was slightly lower, we would see these results when the FX-4100 is @ ~3.8Ghz..

Assuming linear scaling with clockspeed, the 9950 would score 5.10 at 4.6ghz (which it will never see, just a making a point). Which means that clock for clock in this app its IPC is 30% deficient.


Granted CB is not using any instruction set newer than SSE2 on the FX series, this may be a moot point for new AVX/FMA enabled software. But 30% is a huge difference on legacy apps.

Though this does reinforce my view of the uArch as being 4 core 8 thread (or 2 core 4 thread in this case).
Edited by KarathKasun - 1/18/12 at 12:12am
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post #5 of 42
Well, the 9950 is a true quad core, while the FX-4100 is somewhere between a dual and quad due to the nature of the SMT architecture. So I'm not sure this is too surprising.
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post #6 of 42
The 9950 get's it's ass handed to it by core 2 duo's...
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post #7 of 42
Thread Starter 
Quote:
Originally Posted by nifatech2120 View Post

The 9950 get's it's ass handed to it by core 2 duo's...

On a per core basis yeah. As per AMD since A64, it was a day late to the game. It actually fared pretty well against the original C2Q chips, but the second gen ones came out about the same time as the 9950.
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post #8 of 42
If phenom II loses to core 2 quads.. and Phenom II is 20% faster then Phenom I.

I'm pretty sure even to this day.. core 2 wrecks anything from amd.
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post #9 of 42
Thread Starter 
Umm, original C2Q had issues when loaded with 4 threads due to FSB contention (physically 2 chips in one package) making them slower in heavily threaded tasks. Phenom B2 was similar in performance to these chips at high load. single or dual threaded apps though... it lost handily.
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post #10 of 42
Well you're technically using a dual-core module, so I don't see what's the big problem with your score. Now if you were using a FX-8xxx0, then I would be worried.

If you aren't happy, I say sell that and upgrade to a Phenom II. wink.gif (joking, but slightly serious at the same time)
    
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