Keep the 1333 or go the extra miles for 1600?

[iSayuSay]

I ordered the 27" 2012 iMac and for sure want to upgrade my own RAM, my own way.

I have a few sticks from my workplace, which is 2 x 4GB at 1333 Mhz.

Simple questions here:

1. Should I just keep my sticks and plug them into the iMac? Or should i take the extra effort to upgrade my RAM to 1600Mhz (4 x 4GB) is enough for me so I wouldn't take the 8GB sticks.

2. Is there any real world difference between those clocks? GPU has its own GDDR so that's not a problem, right?

Don't tell me to go with the 1600 because it's so cheap. I have1333 with me already. So should I keep them or be worried and upgrade?

Thank you.

 

[overanalyzer]

This is from a MBP not an iMac, but it might help you see the relative performance difference in benchmarks of 1333 vs 1600 MHz RAM

http://www.notebookv.com/notebook-l...nchmarks-1333-vs-1600-4gb-vs-8gb-vs-16gb.html

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Also, you can always upgrade whenever. Why not just use the RAM you have, and if you have issues or are getting page outs, you can always upgrade later. If anything, prices will go down.