06-21-2014 07:34 PM
Has anyone tried recently with 1600MHz modules? I went to Fry's to try and upgrade the memory to 32 GB using 4 Corsair ValueSelect 8 GB Modules ( http://www.frys.com/product/7805069 ), and the system failed to POST (well, blank screen basically, no Lenovo screen, no discernable activity). Right now one slot is filled in with the original Samsung RAM module and one more slot with one of these modules, and it works perfectly. I admit that we (me and the Fry's hardware technician) did not wait 40 seconds to check if the Lenovo screen came up. Reading about the lengthy POST times, I'm tempted to order 3 more modules and an iFixit kit and replacing the original module myself, but I just want to figure out if that will work before I ordering the stuff.
06-21-2014 09:05 PM
I believe the Haswell processors *require* 1.35V modules.
Duh, I made a rookie mistake, I'll take my laptop back in tomorrow to swap out the 1.5V module for new 1.35V modules.
06-22-2014 02:08 PM
I went back in today and put in 4x8GB Patriot PSD38G1600L2S (http://www.patriotmemory.com/product/detail.jsp?prodline=10&catid=34&prodgroupid=248&id=1339) modules. Took about 10-15 seconds for the Lenovo POST screen to pop-up (as expected), but boot was without hiccups. Will be stress testing the rest of the day.