Looking to run 4 channel ddr3 memory @ 1866mhz - I've read that my FX 8350 doesn't care what I want.

faddish

Honorable
Aug 26, 2013
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10,510
I've been researching and have seen a lot of different answers. Looking for the truth. Can I use 4 sticks of DDR3 with my system (see specs in signature) @1866mhz? Or should I just buy 2x8gb sticks and call it a day?
 
Solution
I think your question is:
Can I add another 2 x 4gb kit to get 16gb total?

The answer is maybe/maybe not.

Ram is sold in kits for a reason.
A motherboard must manage all the ram using the same specs of voltage, cas and speed.
Ram from the same vendor and part number can be made up of differing manufacturing components over time.
Some motherboards can be very sensitive to this.
That is why ram vendors will NOT support ram that is not bought in one kit.

You take your chances. You are more likely to succeed if the second kit matches the original in speed, voltage, and cas numbers.
You might need to increase the ram voltage.

Still, you should be prepared for failure. I might guess success possibility of about 50%

If you want a...

faddish

Honorable
Aug 26, 2013
14
0
10,510

Sorry I guess I wasn't clear. I know I can run 2x8 @ 1866. I would like to save $30 or so since I already have 2x4 1866 - so my question is, is it possible to run 4x4 1866mhz with some bios tweaking.....or is it a hard NO?

 

COLGeek

Cybernaut
Moderator

Not hard, it will still be in dual channel mode. If you have 16GB on memory now (4x4GB), you really don't need to do anything.
 
I think your question is:
Can I add another 2 x 4gb kit to get 16gb total?

The answer is maybe/maybe not.

Ram is sold in kits for a reason.
A motherboard must manage all the ram using the same specs of voltage, cas and speed.
Ram from the same vendor and part number can be made up of differing manufacturing components over time.
Some motherboards can be very sensitive to this.
That is why ram vendors will NOT support ram that is not bought in one kit.

You take your chances. You are more likely to succeed if the second kit matches the original in speed, voltage, and cas numbers.
You might need to increase the ram voltage.

Still, you should be prepared for failure. I might guess success possibility of about 50%

If you want a guarantee, sell your old ram and buy a new 2 x 8gb kit of supported ram.

Whatever you do, it is the motherboard that will only let you operate in dual channel mode, regardless if you have 2 or 4 sticks.
 
Solution

faddish

Honorable
Aug 26, 2013
14
0
10,510

Yes! that is exactly what I was wondering, sorry for my taking that as a given in my post. Not to mention I meant sticks not channels (my bad, edited) I am at work and in a hurry.

I will just sell the old 2x4 sticks and buy some 2x8 sticks to keep it simple. Thanks peeps!.......sometimes smart people are way too analytical.

Also I learned something new - I figured RAM was sold in kits because it is common to but sticks by 2's or 4's. I did not know that even if the brands and specs are identical but bought years apart they still may not be compatible - good to know. Thanks again.
 
To be certain of compatibility and support, go to a ram web site and access their ram configurator.
Enter your motherboard and you will get a list of compatible ram kits.
If there should be any problem, you will get support from the ram vendor.
Corsair, Kingston, g.skil have such apps.