 The DDR P4 chipsets have a common claim to fame - provide improved memory performance over SDRAM solutions. By far, the SiS 645 operating in DDR333 mode is the fastest contestant, roughly 15% ahead of the fastest DDR266 chipset, the i845. Operating in DDR266 mode, the P4X266, 645 and 845 are within 4% of each other, with the 845 being the fastest. The PC133 SDRAM equipped Intel i845 takes a beating, lagging severely behind.
 Switching over to Cachemem, the SiS 645 operating in DDR333 mode has a clear latency advantage. Surprisingly however, the 645 actually has higher latency memory accesses (by far) in DDR266 mode. The P4X266 and i845 are roughly on par.
|
|||||||||||||
