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Thread ID: 132953 2013-05-24 02:54:00 3gb of Ram only shows as 1.5gb in MyPc Properties PeterE (6851) Press F1
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1342945 2013-05-24 02:54:00 I have upgraded my Gigabyte 8KNXP motherboard with a total of 3Gb Ram but in My Computer properties it shows only 1.5Gb.

I am running Win XP-3.

Memory sticks are: 2x1Gb. (double sided) 2x512Mb (double sided) and 2x512Mb (single sided).

The correct memory total is shown as the BIOS starts and is set as Dual Channel.

Can someone please help me correct thisa issue?

Warm regards, PeterE.
PeterE (6851)
1342946 2013-05-24 03:31:00 Whats the videocard?? It's not 1.5 gb is it? What slots did you install them in the purple or 2 in purple 2 in orange?? And did you put them in the right way??

According to the manual if I'm looking at the right one Hardware Installation Process



Below are the explanations:

1. One, three, or five DDR memory modules are installed: The Dual Channel Technology will not operate when one, three, or five DDR memory modules are installed and they
will only work as Single Channel.

2. Two DDR memory modules are installed (the same memory size and type): The Dual Channel Technology will operate when two DDR memory modules are inserted individually into Channel A and Channel B (DIMM 1 pairs up with DIMM 4, DIMM 2, 5 and DIMM 3, 6). However, if the two DDR memory modules are inserted into the same Channel (DIMM 1,2,3 or DIMM 4,5,6) then Dual Channel Technology will not operate.

3. Three or five DDR memory modules are installed: Please note that The Dual Channel Technology will not operate when three or five DDR memory modules are installed; part
of them will not be detected.

4. If four DDR memory modules are installed (two pairs of DDR memory modules with the same memory size and tDual Channel DDR:

5. If six DDR memory modules are installed: To activate the Dual Channel Technology and to make the size of each DDR memory module detected, please use six DDR memory
modules with identical size and type and insert them into the six DIMMs following the sequence below:
DIMM 1: Double or Single Side
DIMM 2: Single Side
DIMM 3: Single Side
DIMM 4: Double or Single Side (if DIMM1 is inserted a double-side module, then DIIMM4
must also be inserted a double-side one.)
DIMM 5: Single Side
DIMM 6: Single Side
Speedy Gonzales (78)
1342947 2013-05-24 03:36:00 1GB video card may do this. any other add-on cards may affect this Mirddes (10)
1342948 2013-05-24 03:46:00 Thank you for the replies.

The video card is ancient, a Gainward GeForce4 with 128mb.

Yes all the sticks are installed in the correct slots as per Gigabyte manual.
PeterE (6851)
1342949 2013-05-24 04:10:00 faulty stick maybe, test individually. Mirddes (10)
1342950 2013-05-24 04:17:00 Sometimes you'll find you cant mix single and double sided memory, even though the manual says you can.

Had this happen before, the BIOS may see the full amount but the OS wont.

As a test, try it just without the single modules.
wainuitech (129)
1342951 2013-05-26 03:32:00 I have tried various combinations of these sticks with the same result. PeterE (6851)
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