Which DDR2 800

WoZZeR

WoZZeR

WoZZeR

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Joined
19 Jan 2007
Posts
2,066
Location
Northampton
Hello Chaps

Looking for some nice clockable DDR2 800 for my Shuttle, I fancy 2x1Gb, the main issue I have is the max voltage for the memory in my bios is 2.1V. Most of the super duper memory seems to require more.

Any ideas, busy watching OcUK shop for the bargains Gibbo mentioned......

Cheers.
 
Wait for "this week only" deals to be updated this afternoon - Gibbo has promised some cracking deals on DDR2 this week :)

What frequency do you intend to run at? If you want high clocks on 2.1V then it maybe worth looking at some of the higher rated modules - PC8000 or even PC8500 2Gb kit can be had for as little as £120.
 
Cheers dudes.

Well at the moment I have DDR2 667 value RAM which if I reduce to 533 in the bios allows me to get to just under 3.4Ghz before it gets unstable. I have a nice cool E6700 to clock so would like to try for the maximum FSB of my Shuttle which is 400.

So the best solution to enable 400 FSB with the highest bios memory setting I suppose. The bios hasn't got the ratios, just 533, 667 and 800 settings.
 
So in other words the fastest mem speed you can run in your shuttle is DDR2 800? Then I'm sure you will have no problem with normal PC6400 kits, even the ones that require 2.2V, unless you are obsessed with super low timings.
 
I'm not sure anybody has actually got the DDR2 800 setting to work in the Shuttle yet either, it was a bios update.

No, the memory speed isn't locked, it rises with the FSB, so set to DDR2 800 and O/C CPU = memory speed rise.

I am a beginner, found that out from CPUz.

Edit: So I set my 667 to 533 and it's now running at 680? since I upped the FSB to 340. So what I want to do is find the best memory to reach 400 FSB using the highest bios settings?
 
Last edited:
Sorry I misunderstood how the memory settings work on your shuttle. If your mem is running sync with the fsb then it should be running DDR2 800 when your fsb is set to 400Mhz, and I thought that is what the "DDR2 800" option is for. So in terms of FSB:RAM ratio options on your shuttle DDR2 533 is 1:1, DDR2 667 is 4:5 and DDR2 800 is 2:3. Therefore the highest speed memory you can run should be DDR2 1200.
 
Cheers for that.:)

I was trying to work out the maths myself, but maths isn't my forte. You've made it a lot clearer.

I'll see what pops up this afternoon on 'This weeks Specials'.
 
That's a very nice deal!

It overclocks well too, according to all the reviews.

If you run DDR2 667 option when the FSB is set to 400Mhz you will be running your RAM at DDR2 1000 :eek: quite impossible with only 2.1V tbh :(

You can always run 1:1 DDR2 800 though.
 
Cheers dude.:)

So looking at your previous post, I set the memory in the bios to DDR2 533 (1:1)and that will be just right to take memory restrictions out of my overclocking attempts?
 
Yes since 400Mhz FSB is as high as your shuttle will go setting mem divider option to 1:1 (DDR2 533) will only take it as high as DDR2 800, manually set your timings to 4-4-4-12 if neccessary.

If your CPU doesn't make it to 400FSB then you can try using 4:5 DDR2 667 mem option with 2.1V and fingers crossed that it works > DDR2 800 :)
 
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