[SOLVED] PC only detecting / reading 50% installed RAM on specifics DDR2 DIMMs

[Tom_129]

A budget PC build using admittedly aging hardware seems to only be detecting 50% of the RAM sticks, which are supposedly 2 x 4GB 800mhz DDR2 8v-PC2-6400-1845 DIMMs.

For example:
- 2x4gb only reading 4gb total, when only single DIMMs seated it reads each stick as 2GB, not the 4.

Motherboard can post, Windows loads fine (Windows also views the sticks as 2gb individually and 4gb in dual channel). Not sure if just been sent an incorrect item or some kind of incompatibility with the MB / CPU.

Important specs of this system:

MB: ASUS P5QL-CM
CPU: Intel Xeon 5460 (LGA 771 > 775 mod)

Any help would be greatly appreciated, although it’s not really the end of the world. Just a little frustrating because anything above 4gb DDR2 is quite expensive now, or at least way more expensive than such aging hardware really should be in 2018.

 

[boju]

Which Windows bit version are you running?

 

[alceryes]

I think you are running into the low/high memory density issue for G41 chipset boards.
That board can only fully utilize low density RAM and you installed high density.

 

[Tom_129]

That’s interesting, wasn’t even aware there was such a thing as the high-density / low-density issue with this chipset. I’ll look into that more, thanks.