GA 990FXa uds rev 4 - fx8350 ddr3 2133mhz in bios but only 1000mhz in windows.

[bigmrg]

Hi everybody!

Thank you for taking the time to read this.  I've just built my new machine, first one in 7 years believe it or not.. the last on was an amd athlon xp1800+.

The new machine is, Ga 990fx ud3 rev 4
Amd Fx 8350
8 Gb Corsair Vengeance pro series (2x4gb) c9 2133mhz
Procolor r7 260x 2gb graphics.

The problem is this.  In the bios the xmp profile sets the ram up and the speed is 2133.  In windows however it reads at 1000 only.
In the easytune 6 app it has 2133 as the target but only 1000 as the actual with no option to change it.  I tried the Amd auto tune app and that does the cpu but wont do the memory.  I've updated the bios and removed all the tuning apps. Like  I say, it displays correctly in the bios.

one of the reasons I got this board was because it says it takes the higher ram speed.  I tried both sticks in 1 and 2 rather than 1 and 3 and it wouldnt boot.

Any help would be gratefully appreciated!

Thank you.

[jorgecorazondeleon]

Hi:
¿Do you have the "power plan" in high performance?

[bigmrg]

Hi,

Thanks for your reply, yes the power plan in windows is set to high performance....  I cant understand why the pc runs and shows 2133 in the bios but not in windows... I'll send a ticket to gigabyte too I think...

[jorgecorazondeleon]

Hi:
Have you set in the bios UEFI
MIT
Extreme Memory Profile :
Profile 1 ?
Do you see frecuency memory in:
MIT/Current Status ?
In Windows?
Aida64? or cpu-Z?

[bigmrg]

Hi,

I've set the xmp profile 1 it says 2133 in the uefi.

The amd and gigabyte tuning programs read 1000mhz and passmark performance check did also.

I'll try aida 64...

 Thank you!

[bigmrg]

Here is the screen shot in windows...

[jorgecorazondeleon]

In aida 64:
I see in:overclock
In my case: memo 1600

[bigmrg]

is the bus speed 1/2 memory speed?  Thank you.

[jorgecorazondeleon]

Yes,[the effective memory speed is twice the bus

[moopig]

DDR = double data rate

With DDR memory, data is clocked to/from the memory on both edges of the clock signal, i.e. on rising and falling edges, hence the "double data rate" name.  The data transfer rate is twice the memory clock frequency.