Can't Achieve 1866 Mhz | FX 8350, 32 GB G Gkill Ares, 990fx R2

Reydar · Jun 17, 2014

Hello,

I recently built a system with these items:

AMD FX-8350 Black Edition Vishera 8-Core 4.0GHz (4.2GHz Turbo) Socket AM3+ 125W Desktop Processor FD8350FRHKBOX

ASUS SABERTOOTH 990FX R2.0 AM3+ AMD 990FX + SB950 SATA 6Gb/s USB 3.0 ATX AMD Motherboard with UEFI BIOS

(2 Sets - 32 GB total) G.SKILL Ares Series 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 1866 (PC3 14900) Desktop Memory Model F3-1866C10D-16GAB

CORSAIR HX Series HX750 750W ATX12V 2.3 / EPS12V 2.91 SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply New 4th Gen CPU Certified Haswell Ready

When I set the RAM to 1866mhz in the uefi the system fails. The ram is stable at 1333mhz though. Can I run the ram at 1866mhz? If so, what settings must I change?

Thanks!

6R1M01R3 · Jun 17, 2014

Set bios settings to default, save and restart, go into bios again and click OC tuner (if there is that option) that will raise the voltage of the northbridge so that speed can be supported. After the shutdown go into bios again and set manually to 1866Mhz. Otherwise manually increase the NB voltage little by little and test if the system is stable.

Tradesman1 · Jun 17, 2014

Best bet may be to drop the sticks to 1600 and try, the FX CPUs are rated "UP TO 1866" and thats at 1 stick per channel and the testing they did was with 4 GB sticks, I haven't seen one yet run 32GB at 1866... 1600 is possible, have done that, but actually 1333 is more the norm for 32GB

http://support.amd.com/en-us/kb-articles/Pages/ddr3memoryfrequencyguide.aspx

Reydar · Jun 18, 2014

Thanks

Tradesman1 · Jun 18, 2014

No worries

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Can't Achieve 1866 Mhz | FX 8350, 32 GB G Gkill Ares, 990fx R2

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