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I've heard that the current 64-bit compilers from AMD don't do any wonders yet, producing code often slower than ones produced with Intel's 32-bit x86 compilers.
Hopefully they'll be able to optimise the compiler a LOT soon... AMD sure needs it.
IMHO if Opteron can't do as well as P4 on existing 32-bit code, there had better be some really fantastic 64-bit stuff on the horizon very soon or AMD will be toast on the desktop.
Who's going to put out special "re-compiled for Opteron" applications?
Most people bought the 386 because it ran 16-bit code faster than the 286 did (in addition to its DOS multitasking capabilities with Desqview along with a few 32-bit "DOS protected mode" apps).
--wally.
One thing to consider is that it may still run 32-bit applications (not recompiled) faster than intels 64-bit acrhitecture.
I assume developers will find it easier to work with a architecture they know already (x86), just extended than a full new one.
One the other hand, I have not kept track at all of IA-64, so I may be bulldropping.
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Looks like its gonna need 64-bit specific code to be cost effective.
Agreed. These tests seem somewhat lacking.
Are we to presume from these tests that an Opteron running at 1.8 GHz at 64-bit ought to be roughly equivalent in performance to a 32-bit P4 running at 3.2 GHz?
That being so, was the WinXP Pro version they used fully 64-bit aware? It doesn't say. If not, that alone might account for much of the disparity.
No the review was straight up Opteron on existing 32-bit code and OS.
My point is, the Opteron cost more than the 3.2GHZ P4 and performed significantly worse. This makes for a very tough sell until some compelling 64-bit stuff is available.
The only 64-bit compelling thing for me is digital video editing/encoding. 32-bit compatability means very little if IA-64 gives much better bang/buck for my "killer app". IA-64 vs Opteron pricing and performance will be the key, its simply too early to pick a dog in this fight.
But this set of tests pretty much takes Opteron off the table for my next upgrade to run 32-bit digital video editing software.
the opteron is a server cpu... so these tests are bull!
the A64 is different from the opteron less pins plus other things. Although it too can perform 32bit operations.
I am sure you'd have the same problem comparing an Itanium to a P4 that is if Itanium could even do 32bit code... which it can't without emulation software.
IMO, Hammer just needs some clock scaling to be competitive. I have a feeling (whether it will ruin AMD or not is the question) that current Hammer will be the Williamette, and the .09s will be the Northwoods.
Although MS are working on Win64, it will probably be years before it is fully converted. Just think how long it took for a full 32-bit OS, without many 16 bit components, came out. W95 had a partial 32 bit kernel but most everything else was 16 bit. This improved somewhat with W98 but, unless I'm mistaken, W2k was the very first all-32-bit Win version, even though the first 32-bit capable Pentium was marketed in, I think, 1992 (please don't flame me if it was 93, I'm having a senior moment).
With MS, history has a tendency to repeat itself. Maybe this is why Intel do not plan to introduce a 64-bit "Pentium" for whatever for workstation use before 2010, even though they have a design already up their sleeve. This is probably a clever strategy to let AMD bite the dust!
Also opteron has been designed to be multi processor! so i wouldn't be too fussed over the single processor benchmarks. I'll probably get one once pci express makes a showing. And they have moved to .09 process. Which will probably be 2nd quarter 04.
And when a dual processor ATX solution appears!
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