Quick question about memory speeds

[Speedbird]

Hello.

So, for my upcoming PC, I'm going to buy a kit of 1866 MHz CL9 RAM (2x4GB) and I'm going to run that in dual channel. But I found some old DDR3 memory and I figured I could use that. The ones I found were 2GB DIMMs at 1333 MHz (don't remember the CL). My question is, is it possible to run the faster 1866 memory at 1866 MHz and the slower ones at 1333?

[mroz10]

NCIX did a video about this a few days ago. It'll all run at 1333. Oh, and performance doesn't normally change after 1600.

[sms1202]

I don't think so

But wait for others to respond

What is your mobo?

[Lotus]

No. Memory will run at the slowest common denominator. You CAN mix speeds/timings, but you're stuck with the speeds of your slowest stick.

[Speedbird]

NCIX did a video about this a few days ago. It'll all run at 1333. Oh, and performance doesn't normally change after 1600.

Oh. Guess I'll just run it at 1333. Thanks.

[Speedbird]

I don't think so

But wait for others to respond

What is your mobo?

ASRock Z97 Extreme3, in case it matters.

[MegaDave91]

All will run at the slowest frequency.

[mroz10]

Oh. Guess I'll just run it at 1333. Thanks.

Buy 1333 so you don't waste money.

[blueballs]

LOLLLLL

Put that 2gb under your bed in case you need to make a diagnosis and run those at 1866mhz!