How is DDR memory labelled?

[Mutilator]

How are they currently labelling DDR memory? IE @ crucial.com they have DDR PC1600 and DDR PC2100... are those the same ratings are current PC100 and PC133... or are they something different like PC 1.6ns and PC 2.1ns?
Reason I ask this is because the PC2100 is cheaper than the PC1600... didn't think faster = cheaper... would be nice tho 😉

 

[Howard]

DDR SDRAM Price List

PC2100 SDRAM isn't cheaper than PC1600 SDRAM... The DIMM more expensive than the faster 64MB is registered ECC, while the cheapest one is unbuffered parity.

To my knowledge, I think PC1600 refers to its bandwidth (1.6GB) and same goes for PC2100.

 

[Argo]

I was wondering if cas latency applies to ddr memory as well.

 

[bonkers325]

first off it is 182pin 🙂
it should say ddr on it

 

[Goi]

Yucky's right. Most manufacturer's use the PC rating with the theoretical maximum memory bandwidth tagged on to it, in MB/s, so PC1600 and PC2100 would mean a theoretical max bandwidth of 1600MB/s and 2100MB/s. They'are actually clocked at 100MHz and 133MHz DDR respectively only.

And yes, CAS latency applies to all DRAM type memory.

 

[Mem]

There is also faster ram on the Horizon,333mhz(166DDR)so we have yet to see what the real standard will be next year.

 

[RagingGuardian]

Hmmmm, any one noticed they didn't give the CAS rating of the modules? I wonder how well these babies will overclock? Well one month to find out.