Author: Paul Petersson
Date: 20:32:10 08/08/00
Go up one level in this thread
On August 08, 2000 at 21:49:12, Robert Hyatt wrote: >On August 08, 2000 at 20:40:36, Paul Petersson wrote: > >>On August 08, 2000 at 12:54:51, Robert Hyatt wrote: >> >>>On August 08, 2000 at 09:25:50, Francesco Di Tolla wrote: >>> >>>>On August 08, 2000 at 09:06:17, Robert Hyatt wrote: >>>> >>>>>They are the hottest things around, at present. >>>> >>>>Run an AMD at 2GHz and it will become hotter ;-) >>> >>> >>>Yes. But I am not interested in "temperature". With Crafty, the 667mhz >>>21264 will toast the 2gig AMD or Pentium... >>> >>>:) >> >>Are you sure? A P3/1GHz will do about 600kN, so a 2GHz would do at least 1MN. >> >>Paul > >I am sure the alpha will shred the 1ghz processors. I am not sure about the >2ghz versions since no such animal exists. However, nothing leads me to believe >that 2ghz == 2*1ghz. The problem is that the CPU goes faster, but memory hasn't >improved at all in 10 years. DRAM chips still take just as long to dump/rewrite >today as they did 10 years ago. And crafty needs a fair amount of memory >bandwidth, or else a big cache, which the 21264 nicely provides... > >As far as speed goes. I have an 800mhz CuMine here... it does about 400K >on the positions I use for testing... as it does on the crafty 'bench' >command. The 21264 Tim had on ICC a couple of months back was definitely >more than twice as fast as that number... 400K sounds a little low to me but anyway, the 1GHz P3 is 25 percent faster than the 800MHz so that would mean at least 500kN. Even if a theoretical P3 2GHz wouldn't be twice as fast as a 1GHZ, it would still be pretty close to an 667MHz Alpha. Certainly no "toasting". It will be interesting to see how AMD's 64-bit "Sledgehammer" will perform compared to the Alpha. Paul
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.