sabertooth 990fx 2.0 memory issues

[dschae51]

hey guys im having a little bit of trouble getting my bios to utilize all four sticks of ram i have. it will only recognize 1 running at 2133 and 2 at 1866 and below any suggestions guys and help will be greatly appreciated

my build
sabertooth 990fx r2.0 latest bios
am3+ fx-8350
patriot viper xtreme 2133mhz 16gb 4x4
coolmax 700 wat psu

thanks in advance guys

[sswilson]

Pretty typical for all AMD chipsets. They don't like running high speeds in 4 slots. You can try bumping the NB and mem voltages a bit, and make absolutely sure that they're running 2t (most AMD chipsets seem to default to 1t, but the great majority of memory on the market is rated with 2t set).

[BlueByte]

I have 32GB in my Sabertooth and lazily I set the memory at 1800mhz for all four slots and its 100% stable. You might be able to sneak it up but I doubt you will get it running all four slots at 1866mhz. If its any consolation its almost no difference anyways.

[dschae51]

i still cant get it to utilize all for sticks = /

[Avenger212]

I had a similar problem a couple of days back, were my RAM was causing my P.C. to blue screen. Asus Released a new bios update a couple of weeks back fixing some stability problems that might also fix your problem. Find the latest Bios update here: ASUS - Motherboards- ASUS SABERTOOTH 990FX R2.0

[dschae51]

Originally Posted by Avenger212

I had a similar problem a couple of days back, were my RAM was causing my P.C. to blue screen. Asus Released a new bios update a couple of weeks back fixing some stability problems that might also fix your problem. Find the latest Bios update here: ASUS - Motherboards- ASUS SABERTOOTH 990FX R2.0 which might fix your problem.

that was the first thing i tryd thanks for the input tho any other guesses guys?

[BlueByte]

Have you tried 1333mhz and 1600mhz just to see if it will POST at those speeds?

[terrybear]

I have read/heard that the asus amd boards can be VERY finicky with ram. And i've heard all possible speed/amount combinations work on some boards for folks but others not at all.

USUALY the 4x4 setups all speeds work well .... for shure @ 1600 they do as thats what mine can do now vs couldnt do on my 1090t.

Thought thinking of it, I think sky even mentioned about him having a hard time to run anything over 1866.