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Intel Lindenhurst Xeon DP Platform Discussion
Steve from Hexus writes "Hexus.net has a article looking at Intel's latest Xeon platform: Lindenhurst, discussing the Paxville dual-core processor, E7520 core-logic, where it could go right for Intel, and where it could all go wrong." From the article: "If you're I/O bound by your threads in any way, you can hit problems (all threads touch the MCH, then there's a 266MiB/sec bus link to the I/O processors to cross, then the data hits disks or network hardware). If you're memory subsystem bound in any way, especially on a majority of compute threads, performance is likely gone. There's just too much resource sharing for it to all conceivably work well, especially compared to Opteron. I can forsee many a scenario where dual-core Opteron will give Paxville Xeon DP a beating."
there's a 266MiB/sec bus link
Wow - that's a *LOT* of Tommy Lee Joneses and Will Smiths!
Better though is that the D series can only clock down to 2.8Ghz whereas the AMD64s can go down to around 1Ghz [depending on your part]. Clocking from 3.2Ghz to 2.8Ghz doesn't save you that much power [maybe 10W at most ...].
... at 32C with a copper heatsink. The processor draws around 20-30W when idle compared to the Intel processors which draw nearly double that at idle.
My AMDX2 is sitting here running Linux and is clocked when idle to 1Ghz
In no way is a Netburst based processor a wise decision over the offerings of AMD.
Tom
Someday, I'll have a real sig.