266 FSB with PC133 SDRAM?

[rugger29]

Now, I'm just starting to read up on all this, so someone please correct me where I'm wrong. The KT133A chipset supports PC133 SDRAM

http://www.viatech.com/products/prodkt133a.htm

and the new motherboard from Micro Star uses the KT133A chipset, supporting PC133 SDRAM and 266mhz FSB:

http://tw.msi.com.tw/showroom/mainboard/eng/k7tturbo.htm

yet, on AMD's site it specifically says that the new chips that run at 266 FSB can ONLY use PC2100 and PC1600 DDR:

http://www1.amd.com/products/cpg/result/1,1265,1316,00.html

Is this because VIA has created their own chipset to support 266 FSB and PC133 SDRAM?

 

[jimmygates]

KT133A = 133FSB x 2 (DDR) = 266mhz
Memory = Supports only SDRAM


AMD DDR = 133FSB x 2 (DDR) = 266mhz
Memory = Supports only DDR memory (PC1600, PC2100). Some motherboards will implement DDR + SDRAM motherboards.


So what you were looking at were two different boards based on two different chipsets. The KT133A (VIA Chipset) will support the newer CPUs and SDRAM only. This is VIA's method of competing with AMD's DDR chipset. AMD's DDR chipset (AMD 760) will support PC1600 and PC2100 DDR memory. DDR and SDRAM and not interchangable as they are physically different.



-Jimbo