Originally posted by Ant P.
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Another Look At Intel's Lynnfield Linux Performance
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Originally posted by lem79 View Postjustapost, what sort of cooling are you using? Curious about this turbo thing with the stock cooler in a closed case. Intel sending out monster coolers in the review kits is kind of questionable too, says to me "hey our stock cooling is crap, you'll have to buy something better if you want results like you see here".
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Originally posted by 0e8h View PostWhy si that major distros force people on AMD64 opcodes when both AMD and Intel have unique abilities that surely can make a difference in cpu operations.
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Originally posted by nanonyme View PostNot exactly accurate, I think. Intel had 64bit Itanium processors long before AMD thought of doing 64bit. The problem was that Intel's processors couldn't run 32bit code as far as I've heard.
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Originally posted by Pepazdepa View PostThats not true. Only Debian (and its clones) use term AMD64 for 64bit x86 environment. Most of distributions use general term "x86-64" insted of "AMD64". No matter what term is used, it means 64bit x86 processor. No vendor optimizations.
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64bit and even 128bit microprocessors exist for more than 20 years now, you know. It only wasn't needed in a desktop until recently. All actual x86 processors with 64bit instructions processing capabilities are actually running with 48bit really. No need for full 64bit yet, so it's cheaper to produce those 48bit chips. Itanium came first than AMD64, and Microsoft had actually finished porting Windows to run on top of it. But since AMDs x86_64 architecture is backward compatible with x86 and the old operating systems and all the needed software that wasn't ported to the IA64 yet, it just fall into disuse.Last edited by jntesteves; 25 September 2009, 04:27 PM.
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About the article. To me, it still looks like the AMD Phenom II is the best bang for the buck. Some of the most prominent differences in those graphs seems to be related to other hardware, like the SSD Intel used for their tests. Looking forward to see Michael's results with the same hardware and the updated BIOS. For now I remain agnostic to these results.
And if you just had a Phenom II X4 in there it would be really nice to have in this comparison.
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Originally posted by jntesteves View PostItanium came first than AMD64, and Microsoft had actually finished porting Windows to run on top of it. But since AMDs x86_64 architecture is backward compatible with x86 and the old operating systems and all the needed software that wasn't ported to the IA64 yet, it just fall into disuse.
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Originally posted by nanonyme View PostFrom what I've read about it sounded like yet another technologically superior design that got hit hard by practicalities. (who the heck wants backwards-compatiblity anyway )
Here are few of them from muhdzamri.blogspot.com :
1. Allows end users to run their existing installed base of 32-bit applications and operating systems at peak performance, while providing a migration path that is 64-bit capable.
2. HyperTransport technology - provides a scalable bandwidth interconnect between processors, I/O subsystems, and other chipsets. This feature is not available in Itanium.
3. Integrated DDR DRAM Memory Controller - this memory is integrated in CPU itself. For Itanium, the memory is outside of CPU. According to Mr Mohan,Itanium introduced FSB (Front Side Bus) to connect CPU to external RAM. This increases latency.
4. Low-Power Processors - the AMD Opteron processor offers industry-leading performance per watt making it an ideal solution for rack-dense 1U servers or blades in datacenter environments as well as cooler, quieter workstation designs. This is a critical factor for HPC environment.
The bottomline is Opteron is more scalable than Itanium in terms of speed. If we add more CPUs, the Opteron speed will increase as opposed to Itanium. To make things worse, the bandwidth between CPUs will be divided evenly.
These are distinctive features on AMD Opteron that made it suitable for SUN to bundle it for their server products. Although Intel is popular, for technical people, popularity is nothing. The technical side of it is more important and pricewise it is cheaper too.Last edited by Apopas; 25 September 2009, 07:39 AM.
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