Viking DDR32X72RPC2100 256MB DDR266/PC2100 ECC DDR Memory

Rating:
Summary: Excellent Memory module
Review: Be advised: purchasing DDR memory can be confusing. But once you know the kind you need, this review might make some more sense to you. I purchased this kind of memory for my Tyan S2460. The reason was the fact that the motherboard requires registered DDR mem. Now, for those who don't know the difference (as I didn't until I had to research), there are two or three different kinds of DDR memory. There is the ECC, CAS.25 Registered, PC2100 (the one in this review), and then the ones without the registration, or without ECC support. If you know about memory, this would be something like comparing FPM against EDO, or PC100 against PC133.
So the difference resides in how many features the memory is supposed to have. This should get further complemented with your motherboard's documentation. In my case, I could ONLY use registered, but other MB's may not be so specific.