Author: Aaron Gordon
Date: 23:12:25 02/12/02
I'm sure it's common sense to a lot of you here that large hash size's + high ram bandwith = more Nps. Well, that is definately true (even with smaller hash size's). Here's a few benchmarks I did to compare how much bandwidth it takes to increase x%. All tests were done on an overclocked Athlon XP 1900+ (1.6GHz), Asus A7V266-E (KT266a) with 512mb PC2400 DDR & Windows XP. I used the Fritz6 GUI which use's Fritz 5.32 for the Fritzmark. 32mb hash 1850MHz, 1.3gb/sec ram 1171 FritzMarks | 1680Kn/s 128mb hash 1850MHz, 1.3gb/sec ram 1098 FritzMarks | 1575Kn/s 32mb hash 1850MHz, 2.2gb/sec ram 1212 FritzMarks | 1755Kn/s 128mb hash 1850MHz, 2.2gb/sec ram 1191 FritzMarks | 1690Kn/s Here it shows for the 32mb hash test that a 69.23% increase in ram bandwidth increase's the NPS 4.46%. For the 128mb test a 69.23% increase in ram bandwith resulted in a 7.3% increase in NPS. This should give you a rough idea of what to expect when upgrading to a fast DDR (KT266a) based system vs a fast SDR (KT133a) or slow DDR (AMD 760, KT266, etc) system.
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