Corsair value select
2 x 4GB, 1333 MHz, DDR3-RAM, SO-DIMM
Corsair value select
2 x 4GB, 1333 MHz, DDR3-RAM, SO-DIMM
Yes, it should work, I have installed this RAM in a MacBook Pro. According to Apple's specifications, it also fits the iMac specified: support.apple.com/de-ch/HT4255
Which CPU has?
I5 or i7 CPU
OK (i5 or i7 CPU) works fine.
1333Mhz
DDR3 PC10600
In theory it should be compatible. The early 2011 MacBook Pro 13 has two SODIMM slots and supports up to 8GB of RAM at 1333 MHz. However i think Corsair also sells certified Mac memory if you want to go for that.
As written in the specifications, this is possible with a 64-bit system (please check!), but the 4GB modules are not certified. However, the module is listed by Corsair in the Memory Finder for your PC and all other specifications are compatible with each other. So, theoretically yes.