Which 6400 DDR2 does 800mhz by default

Flanno · 5 Mar 2007 at 22:24

I have read most memory defaults to 5,5,5,15 instead of the specced 4,4,4,12 it is capable of (micron) and some memory defaults to 667mhz instead of the specced 800mhz for safety reasons (geil).

Can anyone tell me of any 6400 DDR2 that has the SPD programmed to run at 800mhz 5,5,5,15 or 800mhz 4,4,4,12. My motherboard does not have any ram timing adjustment but it does support DDR2 6400 and I need to get new ram. But obviously only whatever is programmed into the SPD will run. I have been recommended the Crucial Ballistix 6400C4 2gig kit as being compatible. Just wondering if this is the same micron stuff as the Team Extreme 6400.

Regarding the benefits of DDR2 6400 - as the PC is not overclockable at the moment and the cpu is running at 266mhz would there be any benefit to running the memory out of synch at 400mhz, besides the advantage the video card might have from reading from faster memory directly ? It seems like wasted bandwidth and I know some people say not running at 1:1 and using a divider (which would be the case here as the cpu would automatically use one to keep at 266mhz) is always a negative although I never found in the past.

Flanno · 6 Mar 2007 at 00:54

I guessed that, but I need to get some memory as the stuff in it I have on loan from a friend. So may as well get DDR2 6400 800mhz ram since the board supports it.

So back to my original question - besides the Geil 6400 ultra stuff which runs at auto settings of 667mhz, does DDR2 6400 generally run at 800mhz using auto timings ? That's all I really want to know.

Regarding overclocking - there are 2 ways to overclock a dell mobo - using systool if it supports it, or use an Intel bios, tricky but can be done if you know who to talk to.

Flanno · 6 Mar 2007 at 05:20

So I guess after 42 people looking at this no one knows if their DDR2 6400 is autodetected at 800mhz instead of 667mhz...sheesh.

Flanno · 6 Mar 2007 at 13:48

Thanks dude. Good to know.
I will get whatever is the cheapest 667mhz or 533mhz then.

It's interesting though. The Crucial website recommends their 800mhz 6400 with a 2.2v as being compatible with the Dell 9200. I would have thought this would have booted at 800mhz then ? I have a funny feeling the Dell bios latches onto the spd timings and picks the maximum value to boot with.

Flanno · 6 Mar 2007 at 15:17

Also it appears the Crucial stuff at least on Dell boards is also 800mhz by default. Jedec have a 6400 standard now I have been told but something like 5,5,5,18

Flanno · 8 Mar 2007 at 00:21

Nope not going to. My last rig was an Abit IN9, dual 8800GTX's and quad core. So I know all about overclocking and top components. I kept buying newer and newer components for it though. Money pit. The Dell does everything my last rig did, a lot quieter then any aircooled system for same performance, and was very cheap. There is no way I could build the spec i have for what I paid. It also only runs a 375w psu which while very conseratively rated is surprisingly qualified to run an 8800GTX and fits one with about 3 inches to spare. The only minus is that Dell cases now take a standard atx psu so when a more power juice sucking gpu comes out I could upgrade to this with a simple psu change. A bad thing from my perspective

Flanno · 8 Mar 2007 at 00:26

My mate has some geil ultra 6400 lying about so will borrow that and whack it in too see what the motherboard says. But for the most part I know it's a complete waste on my rig now over not being able to raise the CPU's fsb so standard 5300 will do the trick.