Adding New Ram to system: Compatibility

littleben · 10 May 2018 at 13:06

Hi I'm doing a system clean/refurb which is long overdue.

I currently have 4x4gb Corsair Dominator GT (version 4.13 1.50V 2133MHz 9-11-10-27(?))

I have found 2x4gb used Corsair Domiator GT (looks like they were part of a set of 3, though I doubt that has any bearing on anything) online for a good price but the version and specs are different according to the pics: version 5.11 1.65v 2000MHz 9-10-9-27(?)

Will it be okay to combine these two different versions???

They will put into a Rampage IV Extreme motherboard.

Any input would be very much appreciated, thanks

PiKe · 10 May 2018 at 13:07

Typically the timings from the slower stick will be used, so it should work fine.

littleben · 10 May 2018 at 13:26

Thanks for your speedy response.

So the different voltage is not an issue?

The 4x modules I already have that run at 2133mhz with then run at 2000mhz?

Will I realistically notice a difference in my performance if this is the case? Or will the additional RAM make up for that?

Can I overclock the new modules? Also can I turn off the new modules in the BIOS if there happens to be compatibility issue?? The ram is part of my water cooling loop and it would be a huge pain to dissemble the loop just to take them out if there is an issue.

I am starting to top out my current 16GB more regularly than i did a year or so ago when multi tasking, its frustrating when I do, but mainly upgrading to 24GB is future proofing

Thanks

PiKe · 10 May 2018 at 13:27

I didn't see that voltage in your original post, you can't have different ram at different voltages so the whole lot will have to run at 1.65v.

littleben · 10 May 2018 at 13:35

Just to confirm, that's a NO to the new ram at 1.65 with the old at 1.5??

PiKe · 10 May 2018 at 13:52

You will either have to undervolt the new ram to 1.5v which might cause errors, or overvolt the old ram to 1.65v.

To be 100% sure on compatibility, get ram thats the same voltage.

littleben · 10 May 2018 at 14:25

thanks

bsheep9 · 10 May 2018 at 19:25

littleben said:
Just to confirm, that's a NO to the new ram at 1.65 with the old at 1.5??

I had a Corsair xms3 1600mhz 1.65v ram that I bought by accident awhile back. It defaulted to 1333mhz @ 1.5V on my sandy bridge machine, and I used the motherboard bios to set to 1600mhz without increasing the voltage.

Essentially it ran fine mostly, but every now and then I got a BSOD (usually after playing games for 2-3h). I added an additional pair of 1.5V 1600mhz ram, again without changing bios settings, and I would still BSOD.

Eventually I worked out the problem, and removed my Corsair 1.65v ram and had no more stability issues.

In short: It might feel stable, but it'll likely cause random BSOD.

littleben · 13 May 2018 at 10:04

Thanks, Ive decided against the new RAM as it was mainly for future proofing