The 1866 DDR3 with CL10, as long as your motherboard supports it. Considering we're in the MacBook Pro forum yours probably doesn't so go with the 1600.
1600 DDR3 with CL9
OR
1866 DDR3 with CL10
Thank you.![]()
Apple not offering the BTO option doesn't mean the motherboard doesn't support it.
http://ark.intel.com/products/65709/Intel-Core-i7-3615QE-Processor-(6M-Cache-up-to-3_30-GHz)
since the 1866 will downclock to 1600
If your motherboard doesn't support it, 1600 DDR3 with CL9, since the 1866 will downclock to 1600 and CL9 is a lower latency than CL10.
Just because apple doesn't sell it doesn't mean it's not supported.
And yes, 1866 ram will run at 1600.
I know it will.
But does it run at 1866 or 1600 when in a Macbook Pro ??
Has anybody tried it?