Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Technology Stocks : Intel Corporation (INTC) -- Ignore unavailable to you. Want to Upgrade?

To: Petz who wrote (126890)	2/8/2001 2:04:59 PM
From: Tenchusatsu	Respond to of 186894

Petz, first of all, I already mentioned that the latency of PC600 RDRAM is even worse than that of PC800. If that wasn't the case, Pentium 4 (or even Pentium III on 840) would not see much of a performance penalty going from PC800 to PC600. Second, an SMP Athlon system consists of two Athlon buses, each capable of 2.1 GB/sec of bandwidth, plus an AGP-4x port requiring 1.0 GB/sec, plus one or two PCI buses requiring 0.66 GB/sec max. All of this is competing for one DDR channel that can only supply 2.1 GB/sec of bandwidth max, and the actual bandwidth provided by DDR will be even less due to inefficiencies. The bandwidth of the memory channel must be shared by all requestors, and there isn't a lot to go around. True, you're not going to have all sources requesting data simultaneously, and the PC133 vs. DDR Athlon benchmarks suggest that even a single processor won't make full use of the DDR bandwidth. But like I said, if pure bandwidth were the only consideration in performance, the 760MP chipset falls very short, and Foster would reign supreme. (Of course, pure bandwidth is only part of the picture, but that's another story.) Tenchusatsu