Question about PC Chips M870 Motherboard

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BIOS detects only 128 MB instead of 1024 MB

Hi, i've two 1 GB memory sticks. The BIOS and Win XP shows only
128 MB per stick. Everest shows 512 MB module size.
My old 512 MB stick works.

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  • Thorsten Mar 17, 2008

    It's a M870 V2 board. Yes, it supports 1 gig ram modules. The manual say up to 2 gig ram. 1 gig each slot. The videocard is an

    AGP ATI. If i install both ram modules i have 256 MB total memory instead ~2048 MB. For me it seems like a BIOS problem but i don't find a newer one.

  • Thorsten Mar 17, 2008

    I'll check it if i'll be at home in the evening. At least the labels are printed with 1 gig, DDR400, 2.5 V.

    Thx for the hints.

  • Thorsten Mar 18, 2008

    The modules are ok. I've tested them with some Elitegroup and ASRock boards at work.

    At PCChips boards the BIOS detects only between 128 MB and 512 MB from 1024 MB.

    I dont't know further.

    Thx at all for help.



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Find the jumper (red) which is labelled i think D15 (near the CMOS battery), switch this to jumpers 2+3, then power on and leave for 30secs, it will not look like its doing anything.. reset the jumper back to 1+2 and reboot.. then pressing DEL should get you back into the bios... you may wanna try a bios upgrade.. support on PC Chips can supply you one... but do this at your own risk.

Posted on Nov 28, 2008

i've tried the modules in an old P4 with an old BIOS (Award 1.44). That BIOS detects 512 MB from 1024 MB for each module. It's not my PC so i can't update the BIOS.
The RAM type is correct and supported for my SIS755 chipset.
I've dismount all cards that are not necessary for boot, flashed the latest BIOS version and cleared the CMOS ... does not matter.
Thx for help @ll


Posted on Mar 17, 2008

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Can you try the memory sticks in another PC.
Did you get them from a reputable dealer.
I have known people buy what they thought were 1 gig ram and got fakes. i.e. 512 or 256 meg.

Posted on Mar 17, 2008

  • Stuart
    Stuart Mar 17, 2008

    Is it the correct type of ram.
    i.e. DDR400/333/266/200 2.5V Memory.


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Does the motherboard support 1 gig ram modules? what kkind of motherboard/video card do you have? sometimes video card onboard ram can ofset motherboard ram, especially with ati video cards.

Posted on Mar 17, 2008

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