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Why does my XP machine on an AMD duel core outperform...

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September 14, 2010 3:03:21 AM

My AMD Phenom Quad core on an almost identical machine? It's bugging me...a lot.
a c 105 à CPUs
September 14, 2010 3:06:33 AM

what do you mean outperform? and what are the exact specs of each PC?
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September 14, 2010 3:06:38 AM

Oh--almost forgot--I'm running the duel on an M2N68-VM and the quad on an M3N78-VM.
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September 14, 2010 3:07:17 AM

My quad is lagging like a fat man on a marathon.
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a c 893 à CPUs
a c 356 À AMD
September 14, 2010 3:07:41 AM

Need more info Dual can be running 3.0+GHz and quad at 2.0GHz.
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September 14, 2010 3:08:04 AM

Oh, and what benchmarking software do you recommend? I haven't ever needed it before?
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September 14, 2010 3:08:50 AM

Yeah--duel is running at 3.0 and quad is running at 2.5. Is that enough to see a big difference?
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a c 105 à CPUs
September 14, 2010 3:10:53 AM

jmwcctx said:
Yeah--duel is running at 3.0 and quad is running at 2.5. Is that enough to see a big difference?


so its just your opinion one is running faster then the other? you have yet to post the actual CPU. what is the quad and what is the dual core? it also depends on the software in use since a faster dual core will run better then a slower quad and vice versa.
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September 14, 2010 3:11:09 AM

I think they were both black box. I think the duel was rated at 7550 and the quad at 9550?
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September 14, 2010 3:13:16 AM

Running Belarc on both so I can be more precise. Be back in a second.
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a c 105 à CPUs
September 14, 2010 3:15:06 AM

im guessing one is the Kuma 7750 @ 2.7ghz and the other is the phenom x4 9550 at 2.2 ghz. the kuma is the better CPU, the first phenom quads where junk.
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a c 893 à CPUs
a c 356 À AMD
September 14, 2010 3:17:05 AM

In single threaded applications between the two you listed the Dual is always going to be faster because of clock speed.
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September 14, 2010 3:20:33 AM

OK-duel is an AMD 2.7 Athlon 7750 Dual-Core, 256kb primary cache, 512kb secondary cache. Quad is a 2.5 Phenom 9850B Quad Core, 512kb primary memory cache, 2048 kb secondary memory cache, 2048 kb tertiary memory cache. Both are 64-bit ready and neither is hyperthreaded.
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a b à CPUs
September 14, 2010 12:22:20 PM

On a task that does not make use of more then one core, assuming both CPU's have the same IPC, the faster clocked CPU will always be faster.
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September 15, 2010 7:37:05 PM

Thanks for all your help, folks. I got it figured out and learned about single-thread and mult-thread operations. It was informative and a worthwhile conversation. Thought I'd post a follow-up to thank you folks and hopefully help somebody else with any similar issues.

First, I wasn't talking milliseconds on near-simultaneous executes--I was talking ten seconds or more. It didn't make any sense. I noticed that I kept getting a message about the ASUS Express Gate not being installed completely (or configured correctly--I don't remember which). But I started thinking that maybe something had been screwed up out of the box since this was a preinstalled product. I checked the BIOS and it was the right version, but something just didn't add up, so I flashed the BIOS. WHAM! It kicked in the second I rebooted. All of a sudden it saw 1920MB of memory where it'd just seen 1530MB before. Everything went to work as I thought it should have from the beginning.

Hope this helps anybody else that might have the same issue. Again, it was an ASUS M3N78-VM. And again, thanks for all your tips and advice. Would still like a good benchmarking program if any of you have any suggestions.
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September 15, 2010 7:52:05 PM

gamerk316 said:
On a task that does not make use of more then one core, assuming both CPU's have the same IPC, the faster clocked CPU will always be faster.


Not always true - a 2.66GHZ Core i7 is faster in single-threaded applications than a 2.8GHZ Pentium IV. But in similar/identical architectures like these, it is.
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