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To: dale_laroy who wrote (35736)	4/14/2001 11:47:11 AM
From: fyodor_	Read Replies (1) \| Respond to of 275872

Dale: This statement would be true for a P-III based system but not Athlon/Duron based system. CAS3 PC133 only performs as poorly as CAS2 PC100 if the PC133 DRAM is being run asynchronously (with a 100/200 MHz FSB). The SDRAM boards in question would all be based on the KT133 or KT133A. The "A" runs with a sync'ed FSB and a memory bus. You _can_ force them to run asynchronous, but at a significant performance penalty. (the "synchronous" vs asynchronous" nature was what I was trying to hint at using somewhat less technical jargon). And, while I can not explain why, the performance of PC1600 DDR SDRAM is always abominable. Do not go with PC1600 DDR SDRAM in any circumstances, unless you are willing to overclock the DRAM. That does seem odd. Is it also the case if the PC1600 is used with a 2x100MHz FSB? (All the DDR benchmarks I have seen feature the Athlon "C"). If not, the explanation could be that timing "tricks" similar to what is employed when you force the KT133A to run async'ed. -fyo