Memory Upgrade: Higher Speed vs Lower Latency?
 

Looking to upgrade my laptop from 2x2GB to 2x4GB

which one of the following is a better choice?
1) Mushkin Enhanced DDR3 8500/1066 7-7-7-20
2) Mushkin Enhanced DDR 10600/1333 9-9-9-24

I know the speed difference is probably negligible, but they are they same price here anyway..

I also wanted to know in general, is higher speed more important or lower latency?


laptop spec:
thinkpad x201, i5-540m, crucial M4 128gb
current memory is 2x2GB DDR 8500 from factory (i actually don't know if my laptop can utilize speed higher than ddr3 8500)
no games, mostly work computer but I will often have 5-6 different programs open, 20+ spreadsheets/documents/pdf and a lot of tabs at the same time

There will be no noticeable difference between the 2.

how bout the Corsair Vengeance 8GB DDR3 1600MHz SODIMM Kit (2 x 4GB) at Memory Express

or Corsair Vengeance 8GB DDR3 1866MHz SODIMM Kit (2 x 4GB) at Memory Express


dunno what price ure looking @ but thought id throw that out there since i was looking at them too for my laptop :)

The muskin i posted were only $38 (i am really surprised at how cheap ram are nowadays....)

thanks anyway! just going to go with the slow speed/higher latency ram