RAM Backwards compatible?

[The Halo Don]

So my motherboard can accept a max of 1033(or 1066, something like that), I was wondering if I could insert some Corsair Vengence clocked at 1600mhz?

Would it automatically roll back to 1033 or would it just not work?

I'm sure it won't work, but just need to make sure!

 

[jaquith]

It will run DDR3-1333 by Default and unless you're willing to OC and run th FSB -> 240MHz then leave it.

 

[The Halo Don]

It will run DDR3-1333 by Default and unless you're willing to OC and run th FSB -> 240MHz then leave it.

But would it even be compatible?
That's my question.

What I am understanding from your post, is that the Corsair Vengence 1600mhz model come at 1333mhz and must OC'd to achieve the 1600mhz?


Also, just found out that it can run memory set at 1333mhz, so that means that the Corsair Vengence ram would be compatible even if it, correct?

 

[InvalidError]

As long as the BIOS correctly auto-sets RAM to the slowest common frequency and timings, you can mix 1066 RAM with 1600 RAM and it will simply run at 1066.

When people buy 2133 RAM, there is no guarantee that the CPU's memory controller will overclock that high but the RAM should still work perfectly fine at any lower clock frequency.

 

[The Halo Don]

As long as the BIOS correctly auto-sets RAM to the slowest common frequency and timings, you can mix 1066 RAM with 1600 RAM and it will simply run at 1066.

I'm not wanting to mix it the memory I currently, I want to replace it!

 

[jaquith]

But would it even be compatible?
That's my question.

What I am understanding from your post, is that the Corsair Vengence 1600mhz model come at 1333mhz and must OC'd to achieve the 1600mhz?


Also, just found out that it can run memory set at 1333mhz, so that means that the Corsair Vengence ram would be compatible even if it, correct?

The 'problem' is your CPU specifically it's IMC and not the RAM, the Phenom II X4 840T will throw errors if you simply up the DRAM Frequency without also increasing the FSB -> 240MHz.

This might help -> http://www.gskill.us/forum/showthread.php?t=7688