Author: Vincent Diepeveen
Date: 09:11:03 09/27/02
Go up one level in this thread
On September 26, 2002 at 15:11:23, Robert Hyatt wrote: >On September 26, 2002 at 12:28:16, Aaron Gordon wrote: > >>On September 26, 2002 at 11:16:06, Robert Hyatt wrote: >>>> 93.5 seconds base run time >>> >>>Yes... But the Intel duals are blowing the AMD duals out of the >>>water, totally.. >>> >>>AMD appears to win the "single cpu war" at the moment. But on the >>>duals (and beyond) they are _way_ behind intel's performance. >> >> >>Where exactly are you seeing the dual AMD's being "_way_" behind Intel's >>dual P4 systems? Slates dual XP 1.73(2100+) gets 1.69 million nodes/sec in >>Crafty v18.11. A single 2.5GHz AthlonXP gets almost 1.6 million nodes/second. >>With the 2800+ being announced on October 1st and the Iwill MPX2 as cheap as it >>is someone could make a dual AthlonXP 2800+ box quite easily provided they take >>the 5 minutes to unlock the cpus. >> >>Show me some numbers Hyatt. :) > >Several have posted dual AMD numbers. The relevant detail is this: > >run crafty with one cpu on an AMD box and record the NPS. Then run it >using two cpus and record the NPS. On an AMD box, the dual cpu speed >will be around 1.4X faster than the single cpu speed. on an Intel box, >this ratio is 1.9X. Which is a _significant_ difference. IE with Crafty, >a dual intel gets 1.9x as much computing power (I am not talking parallel >search speedup here, only raw NPS numbers to compare computer horsepower) >while a dual AMD gets 1.4X... > >Eugene posted several such numbers here. Vincent reported 1.4X on his >dual AMD. At mhz for mhz, AMD is generally faster, using one cpu. But >when you factor in that 1.4X vs 1.9X for duals, the Intel processor catches >up in a big hurry when using more than one cpu... depends upon how well a program is written obviously. >Wasn't my results that were posted, I just noticed them. > >Others replied to that thread as well and AMD was always behind...
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