Mixing up ram of different timings

Virolainen

Reputable
Apr 5, 2015
6
0
4,510
Hello

I have 2x4gb sticks of Corsair vengeance pro RAM (CMY8GX3M2A1600C9B, http://www.corsair.com/en/vengeance-pro-series-8gb-2-x-4gb-ddr3-dram-1600mhz-c9-memory-kit-cmy8gx3m2a1600c9b) which have timings of 9-9-9-24 and a voltage of 1.5V

And i also have 2x2gb sticks of Corsair xms3 (CMX4GX3M2A1600C7, http://www.corsair.com/en/cmx4gx3m2a1600c7) with timings of 7-8-7-20 and a voltage of 1.65V
I have 4 RAM slots on my mobo.

How can/should I use these sticks? Will the latency and voltage differences play a role or can I just throw them all in?

Thanks in advance.
 
Solution
i would not recommend doing it but if you want to.

Put the 2x4GB sticks in slots 1 & 3 (or whatever slots your MB says to put two sticks in) load into the bios and manually set your timings to 9-9-9-24 and the voltage at 1.65v save and turn off the computer.

next put the 2x2gb sticks in the computer and boot up. if all goes well the computer will boot up and load into windows. If everything is fine you can try and lower the voltage to 1.5v but i would run memtest on all sticks just to make sure everything is working fine.
Hi Virolainen,

I would highly recommend not mixing these RAM modules together. Here is a great Tom's article explaining why it isn't a good idea:

http://www.tomshardware.com/reviews/ddr-dram-myths,4155.html

If you search these forums you will find numerous threads relating the errors due to mixing RAM.

If you want or need more RAM, it is best practice to buy identical cards in the size and quantitiy you want to use. If you want 4 RAM modules, buy them in a four pack, as each pack of RAM sold has been tested to work together properly.
 
i would not recommend doing it but if you want to.

Put the 2x4GB sticks in slots 1 & 3 (or whatever slots your MB says to put two sticks in) load into the bios and manually set your timings to 9-9-9-24 and the voltage at 1.65v save and turn off the computer.

next put the 2x2gb sticks in the computer and boot up. if all goes well the computer will boot up and load into windows. If everything is fine you can try and lower the voltage to 1.5v but i would run memtest on all sticks just to make sure everything is working fine.
 
Solution

Tradesman1

Legenda in Aeternum
I would try the above but with the voltage at 1.55 the CL7 sticks need the extra to run at CL7, since they'll be at CL9 won't need as much (and that's just if they and the CL( sticks will in fact play together, no guarantees when mixing DRAM, it's a 50/50 crapshoot