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View Full Version : DDR Ram, What do the numbers mean?



craig_b
20-04-2004, 01:35 PM
I recently purchased a new motherboard (mobo), the Asus A7N8X-E deluxe. It has Dual Channel DDR400 capability. Also, I got the AthlonXP 3200+ with the 400MHz FSB. I bought a retail pack of 2x TwinMOS Dual Channel 512Mb DDR400 Sticks.

Here is the stuff I bought for reference:
RAM: http://www.stylespc.com/xcart/customer/product.php?productid=2196&cat=307&page=1

CPU: http://www.stylespc.com/xcart/customer/product.php?productid=1954&cat=99&page=1

Mobo:
http://www.asus.com/products/mb/socketa/a7n8x-e-d/overview.htm

First, what is the PC3200 number that gets quoted mean?

Second: When my PC boots it says:
1Gb of DDR Detected, running in Dual Channel Mode at 200MHz

Why is it not 400 if I have an FSBof 400, and DDR400 RAM?

I have checked all the frequncies and related settings in the bios, and they are all listed as Auto.

Cheers,
Craig.

craig_b
20-04-2004, 01:36 PM
Damn, Sorry about all the urls there, something pasted wrong...

PoWa
20-04-2004, 01:51 PM
Yup running at 200Mhz sounds right.

200Mhz x 2 (ddr) = 400Mhz.