BuyableTurtle wrote:Basically just different.
Its like mustard and ketchup.
HAHAHAHAHAHAHA
The difference is the speed, for the most part. DDR1 and 2 modules have "notches" in different places on the pins so that you can't insert say DDR2 in a DDR1 slot (or DDR3, the newest). That's just about the only physical difference. The difference in speed depends on the frequencies at which the RAM operates. Some really fast DDR1 400 RAM is faster than even DDR2 667 stuff, but that's only the really higher end DDR1 400 RAM and it's quite phased out by now. DDR2 800 RAM is the "flagship" for the market standards right now for DDR2 modules and almost all DDR2 800 will be faster than any DDR1 stuff.
When shopping for memory, the biggest thing you want besides the capacity (1gb, 2gb etc.) is the timings/ latencies that the memory is clocked to run at as well as the voltage it requires to run. Almost all motherboards will accept 1.8V(volt) memory. CAS latency is probably the next biggest thing and that's the FIRST number in the typical 4-digit "timing" for RAM. The lower, the better, usually. There is a decent
Wikipedia article about CAS latency. I'd shoot for memory timings of 4 if you can, but 5 is usually the most common - even in many DDR2 modules. DDR3, the newest stuff out, has pretty "slow timings" but in return it operates much better and still provides quite a big jump in memory bandwidth.
-DarkPacMan77-
Posted: Thu Nov 26, 2009 10:17 pm