RDRAM vs DDR

I think they are still mainly using PC133 SDRAM. Some might be using Rambus’ RDRAM memory, which is a competing standard with DDR memory. I have not spent much time on RDRAM. Hardware Central has a good write-up on RDRAM and the differences with SDRAM at http://www.hardwarecentral.com/hardwarecentral/reviews/1787/3/.
I have spent some time, but not a lot on DDR memory. It is faster than PC133 SDRAM and uses less power. It is cheaper than RDRAM. Although Intel and Samsung are pushing RDRAM, I think DDR memory will be the next widely used memory standard for desktop PCs, etc. DDR memory is fairly new and motherboards are just starting to come out that support it. My next motherboard will use DDR memory. I am waiting a bit longer for motherboards with the VIA KT266 chipset (http://duxcw.com/news/releases/via/kt266.htm) to become more available and prices to drop some. In a simplified nutshell, SDRAM sends data to the CPU, etc. when it receives clock pulse. DDR memory sends data on the raising edge of the pulse and on the falling edge of the pulse. Two for one… So DDR memory on a 133 MHz bus is sending it at the equivalent of 266 MHz. I’ve seen numbers that indicate a computer with DDR memory can be up to 10% faster on some benchmarks than one with PC133 SDRAM. Go here http://duxcw.com/news/ddr/index.html for more… Larry

2. RE: RDRAM vs DDR
BBATES Apr-05-01 10:02 PM
In response to message 1

Why will you choose DDR over Rambus for your next motherboard?

3. RE: RDRAM vs DDR
lbyard Apr-06-01 02:29 PM
In response to message 2

Performance, price, and availability... It is a combination of things, which boils down to what choices are available and how much performance can I buy for the money. If you are looking for processor and memory performance, the choices this year are an Athlon and DDR memory or Pentium 4 and Rambus or DDR memory. No way am I going to purchase a Pentium 4/Rambus or DDR/motherboard combination, which costs more and, from what I’ve read, runs slower than an Athlon/DDR/motherboard combination. Larry

8. RE: Esto es una prueba de mail
deerslayer Apr-13-01 09:21 PM
In response to message

hmmmm what is up with that post????
My 2 cents, the athlon ddr system is cheaper and is very nice performance wise. I know a guy who has p4 and athlon system. Both are very overclocked. He said his p4 1.5 @ 1.875 is faster than his Tbird 1.33@ 1.6.

633 Celeron @1055, Abit bx-133, 384 Kingmax pc 133 @ cas 2-2-2, ATI radeon 64 mb DDR 16 fans

9. Intel Exec: DDR Memory Will Replace Rambus on Desktop
lbyard Nov-19-01 06:48 PM
In response to message 3

Intel Corp. will place its focus in the future on DDR (Double Data Rate) memory, and sees Rambus as only a niche product, said Intel executive Anand Chandrasekher in an interview. More at http://www.itworld.com/Comp/4217/IDG011119intelexec/. It already has in my opinion. Larry

10. Intel to drop support of Rambus in new CPU products
lbyard Feb-27-02 02:13 PM
In response to message 9

http://www.eetimes.com/semi/news/OEG20020226S0040. Larry

11. RE: Intel to drop support of Rambus in new CPU products
sirgeez May-31-02 11:19 AM
In response to message 10

I have a Athlon XP 1800 with 256MB of DDR 2100 ram for my home use that I built and I have a Pentium 4 1.8ghz with 256mb of ddr 2700 ram. I have noticed a huge difference in performance between the two. My athlon runs alot faster than my P4. I recommend using RDRAM(Rambus) memory with the P4 because it has a 20-step pipeline which allows it to do 4 data transfers per clock cycle. DDR ram only does 2 processes per cycle so it wont be as fast. DDR ram though will be a great fit with an Athlon XP.

12. RE: RDRAM vs DDR
lbyard May-31-02 03:30 PM
In response to message 0

Must be DDR because that is what arrived yesterday from Crucial and is sitting on my workbench with a new Abit motherboard and Athlon XP 1900+ just waiting for me to find the time to help jump into my computer, which is presently running a 500 MHz K6-2. Larry