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To: pgerassi who wrote (140335)7/28/2001 2:44:48 AM
From: Tenchusatsu  Read Replies (1) of 186894
 
Pete, <Since quads are sharing same bus, they start to get in each others way. Thus, 4 way Xeons are slower than dual 1.2 MPs.>

Wrong again, as usual. Take a look at TPC-C:

Best 2-way 1 GHz P3 Xeon system (256K cache): 17629.77
tpc.org

Best 4-way 700 MHz P3 Xeon system (2M cache): 35213.27
tpc.org

Best 4-way 900 MHz P3 Xeon system (2M cache): 38639.77
tpc.org

Looks like the 4-way system is more than twice as fast as the 2-way system, despite the fact that the 2-way system is running at a higher clock speed. Does the 2-way Palomino system run twice as fast as a 2-way Pentium III? Not a chance.

Not bad for systems that each cram all four processors onto one 100 MHz bus, no? Just wait until 4-way Itanium, Foster, and McKinley scores appear on www.tpc.org. I'll bet they'll be published well before the first Athlon system is even acknowledged by the TPC.

Tenchusatsu

P.S. - I can see your rebuttal from a mile away. "No one will ever want a 4-way system as long as they can cluster 2-way systems for less." But that just begs the old question of why AMD would even bother going after 4-way and 8-way.
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