Mixing Ram

[potato-salad11]

Hello there

So here's the the thing,i've already got a ram stick "hyperX savage 2133mhz cl13" and i want to add another 4gb of ram of the same brand "hyperx savage 2666mhz cas13" and my motherboard support 2133mhz
My question is:
will this work ?
if not,what will ?(apart from the EXACT same model of stick that i already have, since,after research,is unfindable )
 

[NelizMastr]

Your motherboard has a QVL listed with all tested configurations. These are horribly outdated, but guaranteed to work. Want certainty? Get one on that list. But honestly, usually modules will just downclock. If it doesn't, return the module and get something that matches the spec more closely.

[beanhubbleday]

Hey dude,

 

This won't work.

 

The only option si to go for the exact same brand and MHz.

 

Sorry,

 

JH

[You_are_a_cunt]

CL and CAS are the same thing. https://en.wikipedia.org/wiki/CAS_latency

 

The 2666MHz stick will run at 2133MHz by default, since higher frequency memory will clock down to the highest lowest common value of other memory sticks

 

For example: a 2666MHz stick paired with a 2133MHz stick and a 1800MHz stick will all run at 1800MHz, since the lowest high is 1800 (Isn't English great at confusing people?!)

[UMxMarky94]

I would look at both sets of rams Clocks speeds and CL rating, I myself ran a mix set where one was a lower clock wither better CL (set A) rating the other the reverse (set B). so i ran both at the lower speed of set A and set the CL rating to the Set B's spec at that clock speed

[Naeaes]

Sadly there are no guarantees apart from the EXACT same model of stick that i already have. It can come down to such minute details that even if we knew your motherboard (that delivers power to your RAM) and your CPU (that has the actual memory controller), no-one here can be absolutely sure. Even if someone happened to have the same exact setup, there are individual differenced between units among the CPUs and boards too. 

 

We can always guess. I guess it can work at CAS13/2133MHz

[Naeaes]

3 minutes ago, NelizMastr said:

Your motherboard has a QVL listed with all tested configurations. These are horribly outdated, but guaranteed to work. Want certainty? Get one on that list. But honestly, usually modules will just downclock. If it doesn't, return the module and get something that matches the spec more closely.

Better yet, Kingston has a memory compatibility tool. That's actually up to date.

[iRileyx]

If it was to work it'd downclock itself to 2133mhz to match the lower RAM stick. But there's a chance it might not work.