Navigate: Advice Beginners BIOS Guide CPUs Links Mainboards Memory Network Storage Video/Sound Cards Contact Forum SiteMap Sponsors WebNews Home	.	.
Prices: Mainboards ABIT ASUS Chaintech Shuttle Soyo Tyan CPU Intel P4 2.4C-800 P4 2.6C-800 P4 2.8C-800 P4 3.0-800 P4 3.2-800 AMD AthlonXP XP 1700+ XP 2000+ XP 2400+ XP 2500+ XP 2700+ XP 3000+ XP 3200+ Athlon64 Athlon64 3200+ Athlon64 FX-51 Opteron Opteron 240 Opteron 242 Opteron 244 Opteron 246 Memory Corsair Crucial Kingston Mushkin OCZ Search Prices:

LOSTCIRCUITS	SHORTCUTS: New Performance Panoramas A Memory Address Space Crash Course System Configuration Disk Caching? System Memory Density Impact WoW, WinXP and WinXP-64 Conclusion Discuss this article here:
Panorama Factory and the $64-bit Question What's in a Benchmark...?
(Review by MS, September 2, 2004)

1GB vs. 2GB System Memory

The dependability of performance on whether we were looking at a first or a consecutive run strongly suggests a role of HDD-based caching, which is a parameter that does not relate to any real performance differences between 64-bit and 32-bit computing and, moreover, is prone to some variabilities that could be caused by either caching in the positive sense of the word or else to some lack of flushing that would actually prolong the I/O duration on consecutive runs (actually, we believe that this is what caused the differences between the 32-bit and the 64-bit application I/O performance described on the last page). To avoid any such strategies impacting our benchmarks, as interesting as they may be as isolated phenomena, we increased the total amount of system memory to 4 x 512 MB (2GB total), which should suffice to keep the reduced workload (4 pictures only) confined mostly to the physical random access memory.

Needless to say that the elimination or reduction of a page-file use was expected to speed up the run time of the benchmark for obvious reasons. In addition, we found that the variation between the first and all consecutive runs was in the order of 2-5 %, therefore, we won't show a comparison between individual runs. However, in order to warrant reasonable data witout the risk of runaway results, we averaged the first and second runs in both 1GB and 2GB system memory configurations.

     

Left 32-bit version of Panorama Factory, right 64-bit version of Panorama Factory. Runtime in seconds, lower is better. Green: 1GB memory, red: 2GB Memory.

next page:      => WindowsXP (32) vs. WindowsXP-64 vs. WindowsXP-64 (WoW) =>