Can't Manually Adjust RAM Speed

[Gorrillasnot]

I just finished building a socket 1155 rig using a MSI B75MA-E33 motherboard, i5-2320 CPU, and 2x2GB Crucial DDR3 1600MHz RAM.

The ram is running at 1333MHz and I cant seem to manually adjust it to 1600MHz.
I enabled x.m.p in the BIOS and it shows DDR3 1600MHz 8-8-8-24 1.5v, but the BIOS still says Current DRAM frequency 1333MHz and in windows cpu-z also shows 1333MHz.

Under DRAM Frequency in the BIOS the only options are Auto, 800, 1066, and 1333.

Is there a way to manually adjust my ram to 1600MHz?

thanks

btw I have updated to the latest BIOS.

 

[Ken g6]

I don't think it's possible to overclock RAM on B75 mobos. And I think anything over 1333 is considered overclocking for LGA1155.

Have you looked at the timing options? If my calculations are correct, CL8 at 1600 == CL7 at 1333. If the board will allow you to set that; I'm not sure.

 

[Gorrillasnot]

According to the specs page for the motherboard it can run ram speeds up to 2400MHz, but for OC'd ram it requires a 22nm CPU.

Sandy Bridge CPUs are 32nm and support up to 1333MHz.

You are probably right it may well be a b75 limitation, atleast when using a 32nm CPU.

thanks

 

[VirtualLarry]

I have similar problems with my GA-H81M-DS2V board and G3258. Even though it's a Haswell Pentium, and unlocked to boot, it has a limit of DDR3-1333. The board can use a BCLK strap trick to run it at 1400, but that's the highest it will go.

To use DDR3-1600 with it (or higher) requires a Z87 or Z97 mobo. On those mobos, memory speeds are unlocked.

I know that's socket 1150, and not 1155, but similar rules apply.

 

[Gorrillasnot]

I'm guessing the real world difference between 1333 and 1600 ram wont be that much for this rig's intended use (htpc/web browsing) so I won't fret over it to much.

thanks for the info everyone