
I had to buy 4 sticks in one package and 2 sticks in another package (total 24GB which is the max for this computer and because I need the most). They were all A-Tech DDR3 1333MHz DIMM PC3-10600 UDIMM Non-ECC CL9 240-pin. Due to two different orders I received 4 low profile modules and two standard size modules. Installed them on a Dell Studio XPS 435MT desktop which had persistent BSDs with different error codes every time and failed the BIOS memory test. Installed A-Tech memory and booted into BIOS. All modules were recognized immediately (all 24 Gb). Happy! After installing this memory, there was no blue screen.

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