RAM not actually going at 1600MHz according to speccy

[thesurvivor190]

So, I just got some new ram for my system:http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=593E4A88A5CA7304
And it says it runs at 1600 mhz. However, Speccy says it is running at 1066 mhz.
How do I make the ram go at 1600 mhz? Also, I have tried going into the bios and changing it to 1600mhz, but there is some text in the side saying that cpus that are locked can only support up to 1066 mhz. How do I raise the speed to 1600mhz?
I am using a asus p6t Deluxe v2. i7 975 3.33 ghz

 

[dividebyzero]

Make sure you're not running this DDR3-1333 kit, and not the one you linked to. The DDR3-1600 modules have four embedded profiles (two JEDEC 593 @ 8-9-9-22, 667 @ 9-10-10-25 and two XMP, 1600 @ 7-7-7-24 and 8-8-8-24) Your detailed attachment is showing three profiles (JEDEC#1, #2 and #3) consistant with the DDR3-1333 kit.
secondly...
Running DDR3-1600 you are technically "overclocking" the system (X58 officially only supports DDR3-1066), so if you haven't already, jump into the BIOS, select the A.I. Tweeker tab and make sure that "Ai Overclock tuner" is set to X.M.P. - this will (should) set your RAM automatically to DDR3-1600

 

[thesurvivor190]

Ok that solved it, now it is at 1600mhz.
However, i noticed the cpu seems to be just at 48 degrees celsius, usually its at 40-45. is that normal?

 

[dividebyzero]

Don't mention it.

48°C...for the stock Intel cooler?....probably yes, fine. a three degree difference isn't a major hike considering the XMP profile raised the RAM voltage from 1.5v (your original anaemic DDR3-1066 setting) to 1.65v, and more than likely added a little extra voltage to the MCH (memory controller) for stability.

 

[thesurvivor190]

Ok, thank you. However, for some reason, when i record with fraps in mw2 (in 1080p) It will record fine for about 8 seconds or so, and then there will be massive lag spikes, and i seem to be getting like 5 fps. This didn't happen before i upped the speed, and im wondering if its because of my harddrive, cpu, or ram. Actually it seems to be solved for now. Anyways Thank you for your help!