ASRock FM2A88X Extreme4+ and Kingston HyperX Savage

[peppezeppe]

Hello everybody,

I bought a mobo ASRock FM2A88X Extreme4+ and a single 8GB bank of memory DDR3 Kingston HyperX Savage 2133 MHz (HX321C11SR/8), but at the first boot the mobo doesn't recognise the RAM (just the fans on and no beep from the internal speaker, if I remove the ram the mobo gives me three beeps). By installing a 4GB bank of DDR3 Kingston 1600 MHz (KVR16N11S8/4) the system boots well and if I install also the HyperX it does read also the 8GB.
Actually it reads just the size and the type of the RAM but it seems it keeps them for the hardware. My OS is Win7 64b. The result is 12 GB of total RAM but only 3.49 usable (512 MB are for the integrated video board).

Even if the ram is not listed in the supported memory list of the ASRock site, I'm wondering if it should still work (the 1600 MHz one also is not listed too, but it works!) and if is possible that the bank is broken or is normal that it doesn't work due to incompatibility issues. From the BIOS I can see that the mobo should go up to the voltage and the frequency compatible with the HyperX.
Do I have any chance to make it work and get rid of the 4GB, which I just have in order to make sure that the problem was the ram?

Thanks everybody!

Peppe

 

[syked3]

Mixing two different models of DRAM is always risky as there is a good chance it won't work.
Boot the PC with one stick of RAM, update the BIOS and then try the two sticks together and see if they work. P.S. combining RAM of different speeds will lead to both the sticks running at the speed of the slowest DIMM

 

[Tradesman1]

Do you have the latest BIOS?

 

[peppezeppe]

Thank you guys for the answers.

At the beginning I just put the 8GB stick and the system didn't boot. Then I borrowed the 4 GB stick, in order to check what was wrong.
With the 4 GB stick the system did boot (only 3.49 GB usable, since the rest is for the video board) and I managed to install the OS, update drivers and BIOS, with the ASRock utility.
Then only later I put also the 8 GB stick, in order to see what happened, even if I knew that it couldn't work at the maximum speed. The result is that the system recognises the the two sticks but the 8 GB are not usable.

1) the system boots with the two sticks mixed but only 3.49 out of 12 GB are usable;
2) the system boots with only the 4 GB stick (3.49 usable);
3) the system doesn't boot (and no beep from the mobo) with only the 8 GB stick installed (I tried all four slots);
4) if I don't install any RAM, the mobo gives me three beeps.

Thank you very much for your attention. I appreciate it.

Peppe

 

[syked3]

Okay reset the CMOS and re-seat the cpu cooler (make sure it is not overtightened)

 

[peppezeppe]

Done. But it didn't work...

 

[Tradesman1]

Might be a bad stick, could you try it in another rig?

 

[peppezeppe]

I'll try... and let you know. Thank you for your help.