I cant get my 16Gb of RAM to work at their rated speed.
Motherboard: Gigabyte GA-P55M-UD2, Rev 1.0, Bios F11
CPU: Intel i5
Memory:
2x Corsair Vengeance DDR3 4GB DIMM rated at 2133MhZ , CMZ8GX3M2A2133C11B, 11-11-11-27, 1.5v
and
2x Corsair Vengeance DDR3 4GB DIMM rated at 2133MhZ , CMZ8GX3M2A2133C11R, 11-11-11-27, 1.5v
The R and B signifying the colour of the heat sink.
I can mix them up and place any 2 of the DIMMS into the MoBo as a 8GB pair and run the memory at 2133MHz using the XMP, but if a put them all on the board (making 16GB) the fastest I can get hem to run is 1600MHz. If I use XMP in the setup, the PC fail sto boot and reboots with the RAM running at only 1333MHz.
The MoBo is rated for 16GB of DDR3 upto 2200MHz.
Sysoft Sandra confirms all four DIMMS are the same and quotes a series of timings that are identical for each DIMM.
If tried various Bios changes with no effect, including upping the DRAM voltage to 1.6v
Any got any ideas what might be wrong.
Jules
PS this is my first posting here - site was recommended by my son, who has unfortunately grown up, moved away and cant easily solve my PC problems for me anymore
Motherboard: Gigabyte GA-P55M-UD2, Rev 1.0, Bios F11
CPU: Intel i5
Memory:
2x Corsair Vengeance DDR3 4GB DIMM rated at 2133MhZ , CMZ8GX3M2A2133C11B, 11-11-11-27, 1.5v
and
2x Corsair Vengeance DDR3 4GB DIMM rated at 2133MhZ , CMZ8GX3M2A2133C11R, 11-11-11-27, 1.5v
The R and B signifying the colour of the heat sink.
I can mix them up and place any 2 of the DIMMS into the MoBo as a 8GB pair and run the memory at 2133MHz using the XMP, but if a put them all on the board (making 16GB) the fastest I can get hem to run is 1600MHz. If I use XMP in the setup, the PC fail sto boot and reboots with the RAM running at only 1333MHz.
The MoBo is rated for 16GB of DDR3 upto 2200MHz.
Sysoft Sandra confirms all four DIMMS are the same and quotes a series of timings that are identical for each DIMM.
If tried various Bios changes with no effect, including upping the DRAM voltage to 1.6v
Any got any ideas what might be wrong.
Jules
PS this is my first posting here - site was recommended by my son, who has unfortunately grown up, moved away and cant easily solve my PC problems for me anymore