08-17-2011 07:26 AM - edited 09-11-2011 09:22 AM
The X220 supports dual channel memory, which can increase performance substantially with two memory modules,
not only memory performance, but also graphics performance (because of shared memory architecture).
I ordered my X220 with one 4GB module, and just added a second 4GB module.
UPDATE: The module added is PC3-10600 (1333 MHz), to match the factory module.
Windows Experience Index ratings (Windows 7 64 bit).
UPDATE2: BIOS 1.21 boosts performance on the 65W Adapter further:
UPDATE3: New Lenovo-supplied Intel display driver boosts graphic performance even more:
Solved! Go to Solution.
08-17-2011 08:04 AM
08-17-2011 10:54 AM
08-17-2011 11:06 AM - edited 08-17-2011 11:27 AM
@JNavas: What's the model # of your RAM? More details on what you actually bought please.
I'm considering the Kingston HyperX 1866mhz 8GB kit. I've heard that the sandy bridge x220's are able to mostly make use of the faster clock speed, based on screen shots I've see posted. Did you get 1333, 1600, 1866? More details please.
EDIT: Oops, just realized you added 4GB to the stock ram. That means it's 1333mhz ram. I totally went off-topic.
08-17-2011 11:26 AM
08-17-2011 12:25 PM
08-17-2011 12:47 PM
The i7-2620M is only spec'd up to 1333 memory. Some other processors have higher spec (e.g. i7-2720QM up to 1600).
Some of the reviewers on Newegg used faster memory than spec'd for their processor without problem, but some report crashes. How fast the X220 motherboard will actually allow is another question.
08-17-2011 04:11 PM
08-18-2011 06:00 AM
08-18-2011 02:50 PM
I have the same config as you but my rating is 5.8. There's something wrong with your software (my guess)...