View Full Version : Can the Intel 875P see 4GB of RAM?

07 July 2005, 11:51 AM
I own two Intel 875P motherboards(one from ASUS and Supermicro) and I was wondering if they can both utilize 4GB or will they only see it as 3GB. I tried contacting ASUS and supermicro but I never got a response. Any info would be greatly appreciated. Thankyou!

07 July 2005, 12:22 PM
The manual of my Asus P4C800-E deluxe 875P Board states clearly that you can use up to 4 GB consisting of 4 modules of 1GB.

07 July 2005, 12:38 PM
Don't see why it shouldn't...although windows has some issues addressing 4gb.

07 July 2005, 01:01 PM
Don't see why it shouldn't...although windows has some issues addressing 4gb.

What kind of issues?

07 July 2005, 02:46 PM
Issues such as not being able to address 4 gigs ;-) windows 32 bit will cap you at roughly 1.6 or 2.6 gigs per app, depending how its written. You will need win64 and a compatible app such as c4d or the upcomming lw and xsi 64bit versions.

07 July 2005, 07:42 PM
win2k can see 4gb, and a single app can use 2gb. but as mentioned, usually most apps crash at around 1.6

winxp is the same by default, but you can enable the 3gb switch to allows one app to use 3gb. and usually crash at 2.4-2.6gb.

windows xp sp2 WILL NOT SEE 4GB. if you install 4gb of ram, windows will "steal" 1.3gb for its own purposes and you will end up with 2.7gb. there is no way around this, no settings in the bios or os. its just how it works now. this is different from hardware pci memory holes which can be moved or changed. the funny thing is that if you install, say, 3.5gb of memory, windows will see all of it.

then there is the hardware memory hole when the motherboard will dedicate some amount of ram (up to 1.5gb ive seen) to pci devices. im not sure about the intel board you have, but most motherboards allow you to change this setting and give windows back it's ram (at a potential performance hit i assume, though i dont see one)


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07 July 2005, 07:42 PM
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