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Comanche 4 is CPU limited on NV25 so this will be interesting. The card just begs to be fed by a fast CPU and lots of throughput for good performance.
Another win for P4, precisely for the same reasons we saw with Quake3 and SS2. The Ti4400 scales excellently on Comanche 4 with CPU and system performance and the P4 with ~2.6GB/sec on the 645DX is able to keep it busy longer than XP2200+ and 2.1GB/sec of memory bandwidth on KT333.
The graph is slightly misleading due to scale and the difference is less than 5% but with 2.53B as another step up from the 2.4B being used here, high end P4 is quicker than XP2200+ in Comanche 4 given a nice graphics card.
But CPU's do more than play games in this day and age so it's worth taking a look at other CPU 'disciplines', areas of performance that highlight certain strengths and weaknesses on the CPU. Pifast v41 which calculates Pi to a specified number of decimal places is a nice application to test memory bandwidth and the FPU unit on a processor. Here we are calculating Pi to 10 million decimal places to give the CPU some real number crunching to do.
Remember, the XP2200+ has the quickest FPU unit on a consumer processor available today so performance should be strong.
Pretty much a completely even matchup between the two. P4's memory bandwidth advantage keeps it closer than it maybe should. Going on pure FPU performance, if you crippled the P4 to 2.1GB/sec to even things up, XP2200+ would open the gap here. It shows you that it's screaming out for some more system bandwidth via a front side bus increase.
Keeping that in mind, lets move on and take a look at some media based performance with MP3 encoding and also a look at SETI which is all about memory bandwidth and strong FPU.
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