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Technology Stocks : Advanced Micro Devices - Moderated (AMD)

AMD 222.48

+3.9%

10:46 AM EST

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To: Joe NYC who wrote (85754)	7/25/2002 3:38:56 PM
From: Petz	Read Replies (2) of 275872

Scalability of P4 from 2.4-->2.53 shows Clawhammer will equal or exceed 3.4 GHz P4. The company has already sent tens of PCs fitted with the upcoming chip to game developers and multimedia software creators, said John Crank, a senior branding associate for the Athlon. This is part of Operation Rolling Thunder, AMD's campaign to introduce the chip, he said. Smart move. The article also affirms > 2 GHz for Clawhammer. I didn't take the "20-25% greater performance than XP" as a negative. The ClawHammer will also offer clock speeds of 2GHz or faster, along with performance enhancements such as a built-in memory controller. This will give the chip a 20 to 25 percent performance gain over the current Athlon XP, Crank said. A 20-25% performance increase is exactly what is needed to give a 2 GHz Clawhammer a 3400 performance rating. The chart below shows the "scalability" of the CPU performance at the top of the P4 frequency range (from 2.4 GHz to 2.53 GHz) at the highest bus speed, using the fastest memory PC1066. It is calculated as a percentage, where 100% means that performance increases the same percentage as clock speed. I used tomshardware.com and following pages: Quake III Arena..................55% Quake III Arena1024..........34% Quake III ArenaNV15.........63% 3DMark2000 Pro...............60% 3DMark2001 Pro...............36% Newtek Lightwave.............94% XMPeg4.5.........................81% Sysmark 2002...................60% Sysmark 2002 Office........10% Sysmark 2002InterCC......102% LameMP3..........................88% (Athlon 2200+=P4 2.4/533) MP3 Maker.......................78% WinACE............................53% Cinema 4D XL R7............102% (Athlon 2200+ > P4 2.4/533) 3D Studio Max.................74% (Athlon 2200+ > P4 2.53/533) SPEC Viewperf DRV08....40% SPEC Viewperf DX07......32% SPECViewperfLIGHT05...69% (Athlon 2200+=P4 2.3/533) SPECViewperfPROE01...41% (Athlon 2200+=P4 2.4/533) SPECViewperfUGS01......25% (Athlon 850(!!!!) > P4 2.53/533) Comanche 4.....................74% If we ignore the 6 of 21 benchmarks where the Athlon 2200+ already outperforms a 2.33 GHz P4 with fastest bus and fastest memory, the average scalability of the P4 Northwood core is 58%. This is at 2.4 to 2.53 GHz. From 2.5 to 3 GHz it will certainly be worse, 50% at the best. A 2 GHz Athlon would already have performance equivalent to the 2.4 GHz, 533 FSB, 1066 RDRAM Northwood. Add on 20% performance boost to that and the P4 would have to be at 2.4 x 1.4=3.36 GHz. Using Crank's 25% number you would get 2.4 x 1.5 or 3.6 GHz as the equivalent P4 speed. Petz

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