View Full Version : What Do These Specs Mean?

19-10-2003, 09:53 PM
I give up. Can anyone please tell me what the significance and meaning of the following specifications means:

AMD XP-M 2000 512K cache, (ok - it is the next bit I don't understand) 256 DDR SDRAM (PC 266Mhz) upgradeable to 1024Mb with 2x 512 DIMMS...etc

Double Data Rate Random Access Memory is ok. What is the "SD" doing in there?
What is PC 266Mhz?
What in all creation are DIMMS? Something to help with hyperthreading?(although this is an Athlon processer)


19-10-2003, 10:03 PM
SDRAM is just the type of RAM that is the rage at the moment. You used to buy say 128mb of SDRAM - now you buy 512mb of DDR SDRAM.

266Mhz is the speed that the computer and the RAM supposedly talk to each other. I guess it's similar to the speed of your CPU (eg 2Ghz)

A DIMM is the thing with the RAM on it that you slot into your computer.


19-10-2003, 10:05 PM
DIMM = Dual In-line Memory Module
SDRAM = Synchronous Dynamic Random Access Memory

If that makes it any clearer :)


19-10-2003, 10:15 PM
Alright XP-M 2000+ means it is a mobile athlon processor that runs at the equivalent of a Mobile Intel 2000 Mhz processor. The amd's actual clock speed is lower than the intel's one, but it performs as fast as.

256 DDR SDRAM means 256Mbs of DDR ram. SD means Synchronous Dynamic RAM, and most ram is this type as Static ram is much more expensive. DDR means the ram will run at twice the data rate than that of ram that isn't DDR.

PC 266Mhz, is the speed of the ram which is running at 266Mhz. Sometimes it will be labeled as just PC266.

DIMM slots are the memory slots on the motherboard. DIMM memory modules are made to fit into these types of slots. For instance, you couldn't put a SIMM ram chip into a DIMM slot on the motherboard.

In this computer, it means that the motherboard can only have a maximum of 1Gig of ram, and have only a 512Mb module (stick) of ram in each DIMM slot = 1024Mb.

19-10-2003, 10:28 PM
Mike and POWA - thanks for your quick and accurate responses.

Susan B
19-10-2003, 10:33 PM
Here (http://ocaddiction.devhardware.com/hardware/memory/207,1/) is quite a good site for describing what Memory Bandwidth And Timings are.

20-10-2003, 04:22 PM
err.. isn't it usually PC2100 as opposed to PC266?

20-10-2003, 04:49 PM
> err.. isn't it usually PC2100 as opposed to PC266?

PC2100 = DDR266
PC2700 = DDR333

That must be what you are thinking of?