Teamgroup 2666mhz Memory speed issues on APU platform

Alasdairhurst · 24 Jun 2013 at 20:42

So i've been setting up a new build with some 2666mhz memory, however this only defaults to 1333 when booting. The motherboard only has a maximum setting of 2400 without manually changing clocks, so i set it to that speed, pop in the timings that the ram specifies (11, 13, 13, 35) and the computer just fails to boot. Are there any other settings i should be looking at to run at the full speed?

wazza300 · 24 Jun 2013 at 20:45

Do you see xmp profile in the bios?

Alasdairhurst · 24 Jun 2013 at 20:46

I had a look for that but I couldn't see anything :S

this is the board
https://www.overclockers.co.uk/showproduct.php?prodid=MB-549-AS

wazza300 · 24 Jun 2013 at 20:54

O I don't with amd don't think xmp is supported,only for Intel

Have you tried @2133 mhz to start with? Then slowly raise the speed

Alasdairhurst · 25 Jun 2013 at 11:12

It doesn't boot at 2133 either. the highest i've got it is @1866.
I may just leave it at that as it is just a family pc for work and stuff. if it's upgraded later before we get anything with DDR4 then maybe it will push it to the max then.
I can at least get it running at cas9@1866 rather than cas11@2666 so that's fairly decent.

Gibbo · 26 Jun 2013 at 11:53

Hi there

With AMD it can be very dependent on the mainboard.

But try to start with the following manual settings:-

1.65v for memory
12-14-14-38-2T for memory timings.

Then try different speeds, if 1866 is still maximum, the mainboard is the limitation.

stulid · 26 Jun 2013 at 12:08

wazza300 said:
O I don't with amd don't think xmp is supported,only for Intel

I got a A85 Giga board here and it has XMP support, depends on the manufacturer of the board I would assume.

wazza300 · 26 Jun 2013 at 12:45

ahh I wasn't sure with amd

Alasdairhurst · 26 Jun 2013 at 13:40

Gibbo said:
Hi there

With AMD it can be very dependent on the mainboard.

But try to start with the following manual settings:-

1.65v for memory
12-14-14-38-2T for memory timings.

Then try different speeds, if 1866 is still maximum, the mainboard is the limitation.

Thanks Gibbo. I've tried out those timings and set it to 2133 and it doesn't post, so it looks like the motherboard is the issue then.

The motherboard does have DOCP which looks like an alternative to XMP. That finds the 2666 settings for the memory, however to get those speeds it has to mess with the CPU clock speeds (boosts it up to 4.4 ghz or something which I can't do on the stock cooler

) and when i reduce the CPU multiplier to a more appropriate level, it's a no go. Either way, it doesn't post.