Triple Channel Memory for Dual Channel Gigabyte Z68XP UD3

[donkeyd]

Stupidly I ordered this - 3x4gb ram:

Corsair Memory Vengeance Black 12GB DDR3 1600MHz CAS 9 XMP Triple Channel Desktop - CMZ12GX3M3A1600C9

For a dual channel motherboard - gigabyte ga z68xp ud3 and now the PC won't post with all 3 sticks in, only with 2. I assume it is because of this I found in another thread:

"if you purchase a Tri Channel 'Matched' set then more than likely you will NOT be able to add a 4th stick because of BIN Sorted Sets. If the 'odd' stick is mis-matched the BIOS sees it as defective and will shutdown/disable the 1 or both sticks in that channel"


So is the 3rd stick now useless to me, can I not buy a matching 4th and use it, such as the one below?

Corsair Memory Vengeance Black 4GB DDR3 1600 MHz CAS 9 XMP Dual Channel Desktop Sandybridge Ready - CMZ4GX3M1A1600C9


I should have paid more attention when ordering, any help would be great

 

[scottiemedic]

Best thing to do is mark it up as a mistake not to be made again and buy a set of 2x4gb Corsairs...

 

[donkeyd]

Best thing to do is mark it up as a mistake not to be made again and buy a set of 2x4gb Corsairs...

I agree, gonna buy 2x4gb

 

[jaquith]

Look like something I wrote above

Looked at your manual, there's no 3X DIMM support, you can 'try' the right 3 DIMM slots:
CPU: | blank | 4GB | 4GB | 4GB |

However, if it was 'my' rig I'd suck up and pay the 10%~15% restocking fee and get a 4x4GB DDR3-1600 CAS 9 fully matched kit.