DDR2 testing

**Charles Wirth** · 08-05-2004, 02:56 PM

Playing with DDR2 more and here is what I have come up with.

Centon DDR2 w/ Micron TinyBGA

Centon DDR400 3-2-2-4 400Mhz 1:1 is faster than

BH 5 2-2-2-5 400Mhz 1:1 I875

Corsair 667 4-5-5-15 3:4

Corsair will not do tight timing at all, at least the ones I have dont. The extra 133Mhz does not make up for the slack timing.

The Corsair does not like lots of voltage and errors start around 2.2v

Sample Micron will not do tight timing.

Centon tops out around 240FSB with tight timing. Top end 1:1 290FSB, top end with 3:4 is 270 @ 720Mhz 2.6v

I am yet to find the top end of the Corsair.

Tests done on a DFI 925X-T2 in dire need of bios update

3.4EE ES @ 4.350 stock voltage

Switching over to Asus P5AD2 925X

Sandra's in @ stock then OC'd. Gonna use 3:4 for Corsair to keep it fair

**Charles Wirth** · 08-05-2004, 03:08 PM

Corsair first

533:3:4 4-4-4-12 1T

**Charles Wirth** · 08-05-2004, 03:10 PM

Buffered

**Charles Wirth** · 08-05-2004, 03:50 PM

Buffered Centon

**Charles Wirth** · 08-05-2004, 03:54 PM

Unbuffered Centon, timings are everything when it comes to DDR2. Ill swap out to the Asus board and try again as it has a 2:3 divider.

**Charles Wirth** · 08-05-2004, 03:55 PM

Oops, just noticed I ran at 3-2-2-5

**althes** · 08-05-2004, 04:00 PM

very nice scores, so right now centon is the one to get.

**Charles Wirth** · 08-05-2004, 04:06 PM

I will be doing more memory testing, tight timing pays off bigtime with DDR2. I need to test some OCZ and some Kingston to find out if they can do tight timing.

I will be posting scores from the Asus tomorrow.

**Kanavit** · 08-05-2004, 04:50 PM

wow, those Centon ram has some good timings for DDR2! if i go LGA 775 , i will be lookin for those.

**Kalway** · 08-05-2004, 06:26 PM

So DDR2 can do x-2-2? Awesome! That means DDR2 will have a chance soon.

**pik-ard v1.1** · 08-05-2004, 06:41 PM

ya.... but its doing x-2-2 at 200mhz... im pretty sure thats still 400mhz total(or do we x4 it now? no... that cant be?)

**LilGator** · 08-05-2004, 07:29 PM

Actually, I think it's 100MHz x 4 now

Too confusing...

**Soulburner** · 08-06-2004, 01:51 AM

That is correct, DDR2-400 would be 100x4.

**pik-ard v1.1** · 08-06-2004, 09:47 AM

so its still 400mhz... with the same bandwidth of pc3200 at 3-2-2-<whatever it was>?

doesnt seem so impresive, unless it can keep those timings at higher mhz.