gopunk

Lifer
Jul 7, 2001
29,239
2
0
wanna be more specific there? i think the most obvious reason would be the bus size.
 

AndyHui

Administrator Emeritus<br>Elite Member<br>AT FAQ M
Oct 9, 1999
13,141
17
81
It's PC133 SDRAM running at DDR...

It gives better performance than SDR...

It's relatively cheap...

What sort of answer are you looking for and what type of information?
 

gaudiello

Member
Mar 15, 2001
53
0
0
Well that answers my ?...How fast is pc2100 and how much better performance is it than pc133
 

Elohim

Member
Jul 9, 2001
46
0
0
pc2100 runs at 266mhz compared to the 133mhz of pc133. Therefore the bandwidth and speed of the memory just about doubles. i use it too from Crucial, it's awsome. hope that helps!
 

NCstateBen

Member
Mar 24, 2001
180
0
0
Looking at your sig I'd say you are already running it. It theroretically has 2x the bandwith of pc133, however, it usually only gets 10% more performance at the most.
 

Noriaki

Lifer
Jun 3, 2000
13,640
1
71
Are you looking for real world differences or...?

PC133 SDRAM is a 64bit bus with a 133Mhz clock
PC2100 DDR is also SDRAM with a 64bit bus and a 133Mhz clock, but it's DDR (effectively doubles the clock rate, so consider it a 266Mhz clock) so you get 2x the peak bandwidth from it.

real world differences are 5-20% on a current Athlon depending on what you are doing.
The Palimino should get more benefit from DDR due to hardware prefetch.
 

AndyHui

Administrator Emeritus<br>Elite Member<br>AT FAQ M
Oct 9, 1999
13,141
17
81
Perhaps you should read this article.

DDR SDRAM has shown to give 5-20% performance increase over SDR SDRAM.