Comments

auggybendoggy wrote on 11/29/2003, 4:58 PM
can anyone here inform me if there is a noticable difference and how.

auggy
riredale wrote on 11/29/2003, 8:29 PM
Strictly seat-of-the-pants, but my impression from the reviews is that DDR will speed up a fast system by maybe 10-20%.
TheHappyFriar wrote on 11/30/2003, 7:10 AM
Personaly, I've seen my old p3-667 with 256mb DDR out perform some 1ghz AMD/Intel p3's. The DDR will ONLY help if your MB will it if you can support 133buss or faster. I've noticed no speed incread with DDR and a 100mhz bus.
auggybendoggy wrote on 11/30/2003, 8:02 PM
thanks,
I tend to think even if 10-20% is accurate thats not enough differenace
to disregaurd a 2.4 p4 using 1 gig of sd.

Thanks
riredale wrote on 11/30/2003, 11:27 PM
I think it's the combination of fast memory, a fast processor, a fast motherboard, and a fast hard disk that makes a fast computer. It's a moving target--a few years from now, it will be hard to find conventional (non-DDR) memory, just as it's hard to find a 4GB disk.

Less than 2 years ago, it was not uncommon for a PC to perform SPOT's RenderTest in about 3 minutes. Now they are doing it in under 2 minutes. I wouldn't bet against the new AMD64 chip doing it in under a minute next year.
TheHappyFriar wrote on 12/1/2003, 4:49 AM
I just checked pricewatch.com. 128mb of 2100 DDR costs $2 more then PC133 128mb. I've never even heard of a P4 supprting anything bus RAMBUS or DDR.
JohnnyRoy wrote on 12/1/2003, 5:30 AM
> never even heard of a P4 supprting anything bus RAMBUS or DDR

To get your memory to run in DDR mode you have to have matched pairs from the same manufacturer. So if you only add one DIMM, obviously, it doesn’t use DDR. If you use two DIMMs from different manufacturers (even though they are rated the same) it doesn’t use DDR. It’s only when an even number of DIMMs (i.e., 2 or 4) of the same manufacture and rating that DDR will be used. So it is possible to be running a (non-RAMBUS) P4 without DDR.

DDR (Double Data Rate) is like RAID striping. It writes to both DIMMs at the same time to get the increase in performance and so both DIMMs must be identical in every way (size, timings, brand, etc.).

~jr