Processors Toolkit
Story: Benchmarks: Intel's 64-bit Pentium 4 660
Posted by: Anonymous (Saturday 5 March 2005, 7:47 AM)
To say 64-bit versions of architectures don't offer any performance advantages unless your program "uses numbers that big" is ignorance. Probably most 64-bit architectures were designed after the 32-bit versions, and improvements learned through experience with the 32-bit versions are often designed in. Some data types will take up more space in cache memories and take more cycles to load in from memory, for example pointers and long integers, so 64-bit programs can also see performance degradation if those kinds of data are used a lot. Examples can be shown of programs showing significant performance improvements going to 64-bit, and other examples can be shown of programs suffering performance hits.
As for why AMD's 64-bit architecture shows so much of a performance gain over the 32-bit architecture and UltraSparc's 64-bit architecture largely doesn't, that's an easy answer: 32-bit x86 is horrible and the 64-bit x86 architecture improves on it drastically, whereas 32-bit UltraSparc was not horrible, so the 64-bit version didn't have as much to improve. I know AMD Opterons currently pwn UltraSparcs on raw performance these days. But you can buy a machine with 106 UltraSparc IV processors with two cores each (do the math) sporting hundreds of GB of RAM. Show me the Opteron box that can do that. :-) (Fortunately this isn't a case of Sun vs AMD, as Sun is now deeply in bed with AMD for their smaller servers)
Full Talkback thread
Story: Benchmarks: Intel's 64-bit Pentium 4 660
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Why no Linux based benchmarks? 64 bit linux has a... James Essex -
64 bit Linux isn't even considered in the art... davidm -
You know what's funny? I read these articles... Anonymous Cowheard
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Mostly directed at ubah Linux hardcorz:
How a... Michael Jaars
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That's because linux suck, get a grip Anonymous
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"64-bit computing [...] won't be a huge deal for t... Casper Wilstrup
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While it's nice to see some competition in the 64-... Fredrik Tolf
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In the case of architectures like Ultrasparc... Tim
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The games benchmarks are obviously limit... Filotti -
What an irritatingly Windows-centric view.
I need... Sean C, McCord
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Who cares about Windows anymore? Everyone is switc... Anonymous
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Linux, Linux, Linux. Do the review again! Jim
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not everyone is moving to linux!
dont be a la... that guys a lamer
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How about Linux benchmarks? Windows is pretty much... Anonymous
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what the fuck does the following mean "although th... Anonymous
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STFU you stupid Linux fanboys. All you guys... Skippity McDoody
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To say 64-bit versions of architectures... Anonymous -
Hopefully you do not use intel. If you do - d... rowan
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what the fcuk does the following mean "although th... Anonymous
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Look more like an Intel Press release than a bench... Paul Blair (toadlife)
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You need 64-bit windows to make best use of it?
Wh... michael goulish
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Sean, it doesn't seem to me that that is what the... Jason Archer
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Considering Microsoft's inability to provide... The Mitch
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"Intel may draw comfort from the fact that it has... Some Llama
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Itanium is truly 64 bits ok. read the article... Anonymous
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can't be 82%c. at that temp, your processor i... Anonymous
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I just recently bought the Intel Pentium... DeSi
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well to start off i think this article is sorta bi... Tyler
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Great review! Sorry to say that all you Linux lam... Anonymous
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Unless I'm missing something, neither AMD64 n... Cubase SX User
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I have bought the intel 660 ( 3,6GHz 64-bit) chip.... Kostis Tsiutras
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Windows Rules!!!!!!!!!!!!!!!!!!!!!!!!!!!! Windows Fan
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AMD 64-bit improved my genetic algorithm optimizat... Anonymous
