• Welcome to Overclockers Forums! Join us to reply in threads, receive reduced ads, and to customize your site experience!

Trying to get memory to run at stock speed

Overclockers is supported by our readers. When you click a link to make a purchase, we may earn a commission. Learn More.

Sugam

New Member
Joined
Sep 4, 2015
Drives : 5x Western Digital RE WD3000FYYZ 3TB Raid 5 & 4x Vertex 4 256gb SSD Raid 0
Raid Card : LSI 9265-8i
Operating System : Windows 7 Pro & Windows 10 Pro x64
Memory : 16 GB 2x G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBRL 9-9-9-24 1.5v
Motherboard : Crosshair IV Extreme
GPU : MSI Radeon HD 7970 Lightning Edition
PSU: CORSAIR AXi series AX1200i 1200W Digital ATX12V v2.31 and EPS 2.92 SLI Ready CrossFire Ready 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply
CPU : AMD Phenom II X6 1100T Black Edition Thuban 6-Core 3.3GHz

I have been having some issues with memory for a while now.

Originally I had an issue with the memory giving errors when I used 2 sets of dual channel memory as specified above.

Having 3 or more sticks of ram would cause errors in memtest86.

So i tried the normal. Increased voltage to the memory. I found as I increased the voltage to the memory the more errors i would get. From 4 errors an hour at 1.5v i got 14 errors an hour at 1.52v thousands of errors at 1.6v.

Seeing this pattern I decided to lower the voltage and the lower the voltage the less errors i would get.

Finally at 1.45v I got zero errors in memtest

After 20 hours of no errors I decided to try prime 95

In about an hour prime 95 gives me rounding errors and starts shutting cores down.

Puzzled I started doing some research and it was hard to find answers.
Eventually I found a data sheet. I had people saying it does not and people saying it does.

Apparently my CPU does not native support 1600 ram.

So I decided to run the ram at 1333 at 1.5v and I get no errors in memtest and no complaints from prime95

BUMMER! But this makes since. I believe that by down volting the ram I was actually starving it causing it to run slightly slower.

I don't know where to go from here. I believe this requires overclocking the CPU?
What can I do to make this ram work at the 1600 speed.

I have attempted relaxing the timings. 1600 1.5v at 11-11-11-30
I think that is pretty loose but prime 95 does still not like them running at 1600.

What changes do I need to make to allow the cpu to play ball with this ram or am I SOL?