Mixing ram and dram voltages

[csgohan4]

Hi I need some advice,

I have x2 4gb 2133MHZ G skill which run at 1.5v and I bought x2 2gb 2133MHZ G skill , but problem is they run at 1.6v.

My question is will this be a problem as I don't think i can set individual DIMM slot voltages

My setup is the following

I7 2600k @ 4.6GHZ 1.4V with Noctua D14
MSI Z68 GD 65 (G3)
8GB (X2 4GB) 2133MHZ G SKILL
GTX 580
HAF X

[Tradesman]

Can prob run them together at 1.6, but in part might depend....what two sets do you have, by model # if they run different CAS or timings, may be more difficult (if possible)

[csgohan4]

the 8gb is F3-17000CL11D-8GBXL timings are CL 11-11-11-30-2N 1.5V


The 4gb is F3-17000CL9D-4GBXL CL 9-11-9-28-2N 1.6V

I bought the 4gb as spare in case the 8GB modules fail and I have to RMA. Just always good to have a spare lot of ram somewhere given my past experiance with Corsair Dominator Ram and their high RMA rate.

[csgohan4]

Also running latest bios from MSI 23.3 N3

[Tradesman]

could try a few ways to mix them at 10-10-10-30 2N 1.6, 9-10-10-29 2N 1.6 or 11-11-11-30 2N 1.5, those would be what I would start with, then take whatever is best of the three and play with the timings/voltage from there while maintaining stability

[csgohan4]

Thanks, wasn't sure if I could use the timings of the 8Gb for 4gb, you just reassured me

[Tradesman]

Let us know how it goes, those weren't guaranteed settings, just suggestions on where you could start to TRY and get the sticks to play together

[csgohan4]

Tried those settings and the system won't boot up. I guess you need them all to be the same and you can't mix and match ram of different voltages at least

[Tradesman]

It's can be very hard, especially with high freq DRAM, but as said more so with different spec CAS and voltage....could try selling the older set or use in another build possibly

[csgohan4]

Yeah I plan to sell them, I got the 4gb for cheap anyways. I will just have to wait for the 8GB lots to get cheaper then I can get them too and max out my system.

Thanks anyways TMan for you suggestions.

Still happy with G skill and their quality

[Tradesman]

Sorry we couldn't get them to play, sometimes we can and others, it's just too much of a stretch, keep in touch