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DeadmeatGA said:It makes me wonder how CELL will compare to Xbox2 CPU, which appears to be going with a Power5+ style dual-core device.
cthellis42 said:If they are trying to reach a late-2005, early-2006 launch, Power5 could not remotely appear on a consumer device.
UIUC has demonstrated a 509Ghz transistor
The G5 supercomputer they're building for Virginia Tech has a theoretical peak performance of 17.6 Tflops, and they hit 9.56 Tflops, or about 58%. That's impressive for off-the-shelf chips that were never designed to be clustered for this kind of supercomputing.
Vince said:JFYI - AFAIK Power5 is a 130nm device still slated for release in 2H2004. It's pretty analogous to a CMT Power4 with SMT, Fast Path, and microarchitectual tweaks and is projected to hit 3GHz by 2005. Power5+ is a 90nm revision and should go north of there.
PC-Engine said:UIUC has demonstrated a 509Ghz transistor
...and Intel and AMD has demonstrated THz transistors, however, put hundreds of millions of them on a die and they won't be running at that speed![]()
Were they running Linpack to get that percentage?
AFAIK the ES's efficiency drops to 65% with realworld apps. That 86% figure is from the Linpack benchmark. I'm guess that G5 supercomputer's 58% is from Linpack also therefore running real apps would further drop that down to 20-30% efficiency.
PC-Engine said:AFAIK the ES's efficiency drops to 65% with realworld apps. That 86% figure is from the Linpack benchmark. I'm guess that G5 supercomputer's 58% is from Linpack also therefore running real apps would further drop that down to 20-30% efficiency.
randycat99 said:You just got done saying it is only a design feature. If the design hasn't changed, then you would still have a 1.6 GHz P4 today. Fortunately, we are all aware that process has changed over the lifespan of P4, hence we have observed a scaling from 1.6 to 3.0+. It works like that for all processors, in general (but not necessarily the same degree of scaling, of course).
Heya, haerd that such massively parallel stuffs have very low efficiency? Wonder if Cell be different, dont be like PS2, all nice on paper but struggles with cranky and bottlenecked innards again.
dont be like PS2, all nice on paper but struggles with cranky and bottlenecked innards again.
Why 1.6GHz? The original Willamette reached 2.0GHz retail and overclockers got it higher than that, even.
chaphack said:Isnt embedded ram expensive, large and heaty? Thats why PS2 only has measly 4mb and GC 3mb!of course, Nintendo did things a lil more elagantly.
chaphack said:i dunno.
didnt Nintendo feed and suck the eDram with larger pipes or something, and added texture compression..somewhat a real cache while PS2 is more like very fast vram rather than cache...hence GC games, even though using 2mb(or was it 1mb, the rest buffer) for texture streaming, looking smoother....or whatever...something..![]()
Isnt embedded ram expensive, large and heaty? Thats why PS2 only has measly 4mb and GC 3mb! of course, Nintendo did things a lil more elagantly.
Tokyo - Toshiba Corp. has developed a new cell structure for embedded DRAM on silicon-on-insulator wafers that takes advantage of SOI's specific characteristics. The cell will be an essential technology for the company's system-on-chip designs and will make it possible to integrate larger DRAM cells with the Cell processor, a joint development project of IBM, Sony and Toshiba targeting teraflops performance.
chaphack said:how much smaller are they? any data/benchmark/setup/whacaca on how useful they compare to the next best alternative? i mean PR is well, PR?
Paul said:Using SOI heat won't be a huge issue.