Added memory, old settings won't work

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ococ

Limp Gawd
Joined
Oct 20, 2006
Messages
326
I've been running a E6400 on a DS3 board @ 412x8 (3.3ghz) for the past 4 months Orthos table for 20hrs. This was with 1GB of Patriot PC2-6400 800mhz ram. I recently bought Patriot's 2GB kit (2x1gb), also PC2-6400 800mhz, also same 4-4-4-12 timing. But the machine won't boot with the same settings. I changed the memory timings to auto in the bios and now it boots, but it won't go past 30 minute Orthos. Do I need to reclock my machine just because I added more ram? Is this normal? Also, the machine now says running on Flex Memory Mode.

Thanks.
 
I'm not sure if the C2Ds act the same way as the 939 X2s, but when I bumped up to 4 sticks for a while I had to change to 2T. I'm just assuming you added the 2 GB kit to your existing 1 GB.
 
You didn't tell us if the original 1GB was 2x512 or one stick.

Your answer is at the bottom of this document.
http://download.intel.com/design/chipsets/applnots/31320702.pdf

If you run more than 2 sticks it is very common to have to back off the timings just a little. prob ally one of the sub-timings but I am not going to speculate. If you are running 3 sticks everything you are seeing is perfectly normal and happens on all P965 boards hell all Intel boards period, because of manuf tolerances, differences in memory chips, ad nausem some people have more trouble than others. You didn't do bad. it booted.
 
first stick was 1x1gb. I added 2 more 1gb sticks. I guess I'm going back to the drawing board.
 
no biggie, wish I could tell ya which sub timing would solve it, but if you relax the main ones a little or back off the OC a bit, you should be good.

Going to loose a little performance in flex but sooner or later you can grab another stick and even it back out and get your dual channel back.

so, bit of a pain, but I wasnt kidding, go check out the memory forum for the horror sories of going more than 2 sticks. its scary.
 
i added .1V to the ram and dropped from 3.3ghz down to 3.2, and it posted 12+hrs of Orthos. Not sure which it was or maybe a combo of both, but tis fine for now.

One of these days when I have time I'll see if the later bios (post F7) are any better.
 
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