Mixing memory timing in the iMac

[Uncle Pinny]

Hi there. Just purchased my nice 27" badboy which should arrive in Nov.

I currently have 8gb spare ram with the following specs:

CAPACITY 8GB (2x4 GB 2Rx8 PC3-8500S-7-10-F1)
STANDARD PC3-8500
MEMORY SPEED 1066MHz (DDR3-1066)
CAS LATENCY CL8
ERROR CHECKING Non-ECC
REGISTERED Unbuffered
VOLTAGE 1.5V
FORM FACTOR 204-pin DDR3 SO-DIMM memory modules
CONFIGURATION Double-sided 4GB DDR3 SO-DIMM modules
FEATURES Dual channel kit, matched 4GB modules

Any idea if this will work ok? I noticed the timing is different (CAS cl8 as opposed to Apple cl7).

Is that a big deal? Reckon it'll work as a pair on it's own in the iMac or would I be able to mix it with the stock Apple 2 x 2GB that will be in the iMac when it arrives?

Thoughts?

Thanks

 

[Uncle Pinny]

Just realised the voltage is slightly different as well (1.5v as opposed to 1.8v).... is this an issue as well?

I don't have a problem if the stock ram in the iMac operates at this rams slightly lower speed.....