Can the P03-630 accept mixed RAM chips?

foxpur

It came with:
Micron Technology 8ATF2G64AZ-3G2E1 16GB

I am thinking of adding:
2x Corsair CMK16GX4M2A2666C16 8GB

With the Corsair in sockets 1/3 and the Micron in 2

Doable? Comments?

GotBanned

It should, but that would not be optimal.

What do you do with your PC? If you mainly game, what resolution and target FPS do you have? 16Gb is plenty for most tasks, even when not run in dual channel mode. But having two identical RAM modules should help gaming performance.

The higher the resolution, the less single channel vs. dual channel matter as shown in this a old video.

https://www.youtube.com/watch?v=kCg7eVN6N9w&t

But here's the problem. If you mix RAM modules they will most likely run at DDR4-2400. The stick you have now is DDR4-3200 and Corsairs are 2666. I have no way knowing how much of a hit combining then would cause.

Your best bet would be to have two identical RAM modules. Maybe you can find another identical 16Gb stick from somewhere? But if you do, I don't know whether it will run at 3200 (not likely), 2666 or 2400 speed.

Sorry, but I'm not much of a help here.

billsey

Nope, that combo is not supported:

The only supported configuration with an odd number of chips is with DIMM1 populated and 2-4 blank. Once yo go to two or more they need to be in pairs.

GotBanned

OFF TOPIC

Although it isn't officially supported, I fail to see why it wouldn't work. The table above shows single modules, two/four modules of the same size, but fails to mention anything about two modules of different sizes.

I think I've seen posts even on this forum where people have used two RAM modules of different sizes. If that can be done, why not three? Of course it would be far from optimal.

Anyway, it is best to use identical RAM modules in pairs and avoid possible problems. /OT

billsey

You could theoretically put two mis-matched modules in, one in each bank, so DIMM1 and DIMM3. If that worked they would both be in single channel mode. Trying three would likely fail since the first two would switch to dual channel and the third wouldn't be able to do that. Paired modules are always best, we typically don't see users trying to get too tricky until the system is several years old and they're trying to breath some new life into it.