DDR2 testing

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 :rolleyes:

Corsair first

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

Buffered

Buffered Centon

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.

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

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

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.

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

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

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?)

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

Too confusing...

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

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.

Hmmm DDR2 is Rambus all over again.

FUGGER, We are overclocking here;). For me, stock meens nothing since RAM's can do way much more then stock....

actually, the centon was at stock, the otherone was underclocked... >_>

wrench, i think its to early to say if its going to be rambus revisited. ;)

Ill be back benching tomorrow, went down to X games in LA. Got side tracked.

I reached the DDR667 speed by using the 3:4 ratio at 250 FSB and popped ran a sandra.

Here is a software PLL "AIBooster" and a CPUID

Not bad multimedia score

Sandra CPU

Pi @ 4.255Ghz. I wish I had a PCIe video card.

Here is an aquamark3 link running at these settings.

http://arc.aquamark3.com/arc/arc_vie...run=1153330826

PCMark2004 @ 4.255Ghz

http://service.futuremark.com/compare?pcm04=2513233

Buffered Sandra

I thought you had a pcx5300