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NextGenerationGaymulation
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Discussion Starter · #1 ·
I run this program that does advanced calculations on my intel pentium 3.0 ghz. When it runs it says only 50% of the CPU is used.. fine it's the bug in windows XP with hyper threading.. nothing to worry about right? WRONG. I sent the program over to my friends AMD XP 2.2 GHZ, sure enough his computer did the calculation about 20-25% faster.

Well, that's weird.. hmm but one test can surely not be enough to determine things like this, so we did lots of benchmark, and it turns out aslong as a program doesn't have support for hyperthreading indeed only 50% of the CPU is used.

Thanx a lot Intel, well now it's AMD forever, so I just want to warn everyone never to buy a intel proccessor again. It's so sad that I have to send him my calculations because he can do them faster even if his computer is two years older, and besides he got it for a cheaper price.
 

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Eh.. I'm not sure I trust your testing methodology. The AMD system may just very well be running the program better because the CPU is better suited for the application. I really doubt Hyper Threading is slowing down your application. And besides. An AMD athlon XP @ 2.2 Ghz = a 3200+. So his performance should be comparable to yours. New or old.
 

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!!!METAL UNCLE!!!
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Intels Ghz and AMD's Ghz cannot be compared cuz they work differently. Thats why AMD has that model numbering. 3200+ is about same speed as 3200MHz (or 3,2Ghz) Pentium4 cpu. NOT EXACTLY, but around. So in nutshell your friends AMD processor is newer and higher tech than yours, and thats why its faster.
 

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NextGenerationGaymulation
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Discussion Starter · #4 ·
we did not do the benchmark with only that program ( even if it mostly contains lots of additions, which in fact should be Intels strong point ), we also tested with other benchmark including for floating point operations and so on.

If we launch two programs at the same time though, my computer wins with about 30% or more on the very same application. ( The good thing is that most new programs support HT though, and on those mine is also about 30% faster )
 

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Well, you could post your benchmarking details (exact applications, what tests, results of each) here, so others may comment on things you've either missed or still may try.
 

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!!!METAL UNCLE!!!
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Just a small correction to my post above. Despite having bigger number (AMD3200), its speed is equal to 3,0Ghz P4, not 3,2...
 

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NextGenerationGaymulation
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Discussion Starter · #7 · (Edited)
the math program is a lab project so I can't even share the name of it.

Here are some of the benchmarks attached though.

Results were:
my P3.0GHZ
1bench: 54484 ms
2bench: 69265 ms

Both at the same time:
1bench: 55321 ms
2bench: 74636 ms
total: 129957 ms

AMD XP 2.2 GHZ ( or AMD 3200 as someone said is a better name :) )
1bench: 42323 ms
2bench: 46186 ms

Both at the same time:
1bench: 71152 ms
2bench: 99412 ms
total: 170564 ms

All values are approximate values and may vary with +/- 200 ms.

For benchmarks with programs that support HT it's best to check ( http://www.tomshardware.com/cpu/20030513/index.html ) yes the P3.0 GHZ is much better here..
 

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Ocean Soul
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From what I've seen in benchmarks. if something doesn't support Hyper threading...the program will slow down...and AMD always wins in gaming, while intel has stuff like video and sounds edit software...I personally would get an AMD for many reasons (speed, cost, and how well heat is dealt with)....Where Intel wins in speed amd isn't far behind....
 

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Hah.. one benchmark determining what CPU you're going to never use again..

Athlons naturally have a faster FPU, but the C series of P4s 3+GHz are quite faster than the Athlon XP 3200+. Is that 3.0 a B (533MHz FSB, in which it would be 3.06), or C (800MHz FSB)?

Wanna talk about bias? Run PCMark 2002 on both systems and see which one comes out on top. Without a doubt, the P4 3.0 will. Benchmarks are quite inconclusive, to be completely honest.

On my [email protected]:
 

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Totally cooliscool. I mean with that thinking I guess nVidia owners can't play Half-Life 2 and ATi owners are out of luck for ever attempting to play Doom 3 :p
 

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Razor Blade said:
Totally cooliscool. I mean with that thinking I guess nVidia owners can't play Half-Life 2 and ATi owners are out of luck for ever attempting to play Doom 3 :p
Perfect analogy. Says it all. :D
 

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NextGenerationGaymulation
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Discussion Starter · #12 ·
Mine is C ( 800 MHZ FSB ), and 3dmark has nothing to do with my issue here as it has HT support. Try the benchmark I attached they don't have it.

I'm not irritated because his AMD is faster, because it's a lot slower in games and apps with HT support, but I'm extremely irritated that 40-50% of my CPU is being idle while I wait for said math program above to finish a computation. The only solution is to start up another process with the math program and do two computations at once, but at many times I don't want to do this.
 

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Hell, turn HT off and run PCMark, the Intel CPU will still dominate the AMD.

If it's that big of an issue for you, just turn HT off period.
 

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It only helps in applications that utilize it, and there aren't many, and in some cases it can slow things down, not by much though.
 

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NextGenerationGaymulation
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Discussion Starter · #16 ·
yes, you have to re-install windows, and it'll slow things down, HT is used all the time in windows XP, it increases performance quite a lot if you run 2 or more heavy load applications at the same time.

I guess you guys didn't read what we did in the benchmarks at all, but oo well, I got to rant about it anyhow, so I feel better now :rotflmao:
 

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Wind, Life, Eternity
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Good thing I got AMD :lol: Almost all my decision is heavily influenced by cost after a bad experience with expensive, brand name stuff :p
How do you tell if a program supports HT? Does Doom3 support it? My friend with P4 and ATI said it doesn't run too well with highest quality...
 

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NextGenerationGaymulation
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Discussion Starter · #18 ·
In modern games it's not a problem, however doom3 ( openGL ) doesn't like ATI cards.. tell your friend to go buy a NVIDIA card LOL :D

it's sure not easy to be a PC owner these days, maybe it's time to buy a NextBox or Xbox 360 or whatever it will be named :S
 

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I've never had to reinstall Windows when switching HT off.. it's always been as easy as a simple bios switch, and poof, it's off.

Hydra: Of course you didn't name what ATi card and what P4 he has. Not all P4 CPUs support HT, and not all ATi cards are capable of running D3 well at high settings.

HT doesn't cause THAT drastic of a performance hit, and it doesn't cause a performance hit on EVERYTHING it's not optimized for, especially games.
 

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It’s Me .. I still Exist
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Did the PCMark 2002 benchmark with my AMD 64 3200+ at 2.5 GHz and the score was really close to cooliscool's score .. if you "only" counted this benchmark you could see more bang for the buck with AMD, but as cooliscool stated benchmarks can be quite inconclusive, which I agree with.
 
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