Will this RAM run with my configuration?

[AstoSoup]

Hello, I am looking to upgrade my memory and am unsure as to what speed memory my motherboard and CPU will handle. I am running a Biostar A880GZ Socket AM3+ motherboard, with a AMD Athlon II x4 645 CPU. The motherboard specifications read "Memory standard DDR3-1066,1333,1600(O.C),1866(O.C)". I am assuming the O.C stands for overclocked, but this motherboard is not capable of overclocking this CPU, due to the lack of ability to change multiplier. So would for instance, G. Skill Ripjaws X Series, 8GB, DDR3-1866 run in my system? I dont care if it underclocks due to the CPU because I wish to upgrade to an FX 8 core soon anyway. Just want to make sure it will run with my current setup while I wait for the FX. Thanks in advance, hope to resolve this!


System Specs:

CPU - AMD Athlon II X4 645 3.1 Ghz Quad Core, 2.5M Cache

Memory - 4GB G. Skill Eco Series DDR3-1333, 9-9-9-24 (2x2GB)

Motherboard - Biostar A880Z Deluxe, Sata 6GB/s, USB 3.0, Pcie 3.0 , 7 Channel Audio

GPU - MSI Radeon HD7770 Ghz Edition 1GB, 256 bit, Dual Fan, Copper Pipe Bypass Cooling, 640 cores, 2XDVI/2X Mini/HDMI/ PCIE 3.0

Hard Drive -
System - 320GB Western Digital, SATA II, 16mb Cache
Media - 1TB Hitachi External, USB 2.0, 16mb Cache

Case - In-Win Plastic and Titanium, 6x 120mm fans, bottom mount PSU (white with red fans)

PSU - Coolmax 580w SLI Certified, 140mm intake fan, Dual 12v rails.

O.S - Windows 8 Professional X64

 

[ur6beersaway]

I would purchase the 1866, the bios will underclock it until you upgrade and will work fine

 

[AstoSoup]

I would purchase the 1866, the bios will underclock it until you upgrade and will work fine

Thats what I was thinking because the 1866 is only $4 more than the 1600 right now, as long as the board will auto underclock it, it should be fine. Thanks for the quick reply!

 

[ur6beersaway]

It's a good question that I wish I asked. I know now to always buy the max OC # my future mobo's will support. THANKS

 

[AstoSoup]

Additional question, with my AMD Athlon II x4 645 CPU, what speed is this G. Skill Ripjaws X DDR3-1866 going to run? Having a hard time finding the maximum memory speed allowed by my CPU. Thanks

 

[ur6beersaway]

The motherboard will choose either 1066 or 1333 as default.

 

[AstoSoup]

The motherboard will choose either 1066 or 1333 as default.

I am running DDR3-1333 now and it recognizes as 1333mhz. Why cant the Ripjaws clock down to DDR3-1600? The board can handle 1600 and 1866 OC, so is it the CPU that can only handle 1333mhz?