SDRAM PC 133 MHz Intel 810th [mb pc133 sdram] [intel 810e]

Q: When I was 256 Intel 810th motherboard it shows only half the size (128MB). But when I put it on my P4 system shows 256 MB itself

No matter ever PC133 SDRAM size on the 810th show only half the size. But if PC100 SDRAM is used, shows the correct size

Why is this?

Is there a way I could PC133 SDRAM working at full capacity on systems with Intel P3 810th boards .


Best Answer: Sounds like a dead CMOS battery. Specific settings that might have been required for Windows are now gone.

If the battery can be replaced, try doing that. Otherwise you might have to replace the motherboard. If the battery replacement doesn't allow you to get a stable boot (prior to Windows starting), the motherboard is probably past its prime and in need of replacement. If the machine boots with no errors in POST prior to loading Windows, but things in Windows don't work, you might need to find and modify BIOS parameters to whatever it used to have to make Windows work.

The thing about shutting down quickly is probably just a coincidence. Motherboard failures can produce all sorts of weirdness that usually manifests in POST and can be random and changing or solid. Also, a bad power supply can cause weird symptoms, in which case you can try replacing that … although a bad power supply might damage the motherboard, too.


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Re:Thanks guys for ur help

Yes supports only low density ram . The one i was having was high density….it had nothing to do with PC133 FSB

I have just ordered a PC133 FSB 256MB ram from crucial.com its bit costly ($80) but its rare to find so the price fine..

Thanks guy fo making 16 mb thumb rule which u explained in another topics .It cleared all doubts .


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Re:Different guy, same problem, I explained it pretty well in my post on that thread (http://{$MySite}/messageview.cfm?catid=32&threadid=1356314).

Short answer: it's a limitation of the chipset. No software revision can overcome it.


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Re:It is the difference between low and high density memory. The board only supports low density ram, that's why your high density PC133 shows up as half. You need to get low density ram for it.

Got to a site like crucial.com or memman.com that has a memory selector.

If you had a stick of high density PC100, it would do the same thing.


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Re:PC133 MHZ works fine on but the problem is that it will show only half the orginal capacity

eg — 256MB will show only 128MB

could any one suggest a work around for this problem


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Re:Yeah, I did some more searching around and the 810e chipset only supports SDRAM 100/66 doesn't go for the full 133, that's probably why you're running into issues, you could try a BIOS flash, but I doubt it'll help. Anyone else?

- Chaz


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Re:Try a BIOS revision but, and I may be looking at bad info.. but from what I've read the 810e chipset only supports PC-100… It supports PC-133 for the vid card, but not for the DIMMs… probably the problem.

- Chaz


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