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To: Jim McMannis who wrote (147849)	11/13/2001 5:58:31 PM
From: wanna_bmw	Read Replies (2) \| Respond to of 186894

Jim, Re: "The extra 256k of cache is a lot of real estate for just 5%-7% gain in IPC" With the die shrink, there will be plenty of room. Also, expect greater gains than 5-7%, in some cases. wanna_bmw

To: Jim McMannis who wrote (147849)	11/13/2001 6:00:28 PM
From: fingolfen	Read Replies (2) \| Respond to of 186894

The extra 256k of cache is a lot of real estate for just 5%-7% gain in IPC but the P4 is desparate for that... Will be interesting to see if that is 5-7% across the board, or a minimum of 5-7% (more on others) or a maximum of 5-7% (less on others). I'm betting that the 5-7% increase is probably toward the low end of the scale. Intel has had over a year and a half to work out any artificial performance limiters in the initial Willamette design, and I would expect to see some of those in the Northwood. I would expect to see a bigger boost from Prescott, but that's not due out until early '03. Of course, then you've got the scalability questions. With a stated frequency goal of 3GHz by the end of 2002, AMD could go from quantispeed to nanorevenue.

To: Jim McMannis who wrote (147849)	11/13/2001 9:50:07 PM
From: Win Smith	Read Replies (1) \| Respond to of 186894

How do you figure 5-7% better? There were three benchmarks with the alleged 1.8ghz Northwood, in one the 1.8ghz NW was about 10% slower than the 2ghz P4, in one it was about the same, in one it was about 20% slower. The one that the 1.8 NW held even with the 2ghz P4 was the memory bandwidth test, which is presumably not cache dependent. hardwaremania.com hardwaremania.com hardwaremania.com I wouldn't put that much stock in any of it, but I sure don't see any remarkable improvement in this limited test.