Need RAM Timings.

[Techscape]

Need stable timings for 1866. Thank you!

Motherboard: GIGABYTE GA-990FXA-UD3 AM3+ AMD 990FX
CPU: AMD FX-6100 Zambezi 3.3GHz
RAM: G.SKILL Sniper Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1866

Again, thank you! I will post updates if the timings do not work.

Techscape

[Tradesman]

the 1.5 set, F3-14900CL9D-8GBSR, is 9-10-9-28, 2T (or 2N), 1.5, will also want to be sure you have the latest BIOS for the 990FXA that supports the Zambezi's and higher freq DRAM

[Techscape]

Well. The timings unfortunately cause the system to crash and if it does boot it is unstable. Keeps wanting to jump down to 1333 timing vs the 1866.

Any more advice?

[Tradesman]

Do you have the latest BIOS F6f, can be found here:

http://www.gigabyte.com/products/pro...?pid=3894#bios

GB hasn't done much testing with 4GB sticks on this mobo, so am guessing the BIOS will still be lacking a bit, might also try raising DRAM voltage a tad (1.55) and see how that does, the MC may need a slight voltage increase also

[Techscape]

Well, I already updated the bios, in fact that was the first thing I did. I usually do that on fresh builds anyways. I will see what tweaking the voltage does.

Also, I didn't mention before but I have 2 - 2x4GB. Thought I may want to include that. If it doesn't support it at those timings I am OK with clocking down some.

[Tradesman]

Since some of the Zambizi (mainly the 41-6100 can have a problem at 1866, can always drop to 1600, with this set would try at 8-9-8-28 2T 1.5 (and you had the DRAM right in the first post, just noticed and changed my typing error, sorry bout that)

[GSKILL TECH]

In addition to inputting the basic memory settings, you have to increase the CPU-NB Voltage to be able to stabilize full slots of DDR3-1866. Otherwise the memory controller (CPU-NB) will be overloaded and unstable.

Thank you
GSKILL TECH