Question about which heatsink would work for me

[GSandra32]

Ok, so I have a new I5-2500K Sandy Bridge CPU. This is what I have put together.

Rosewill REDBONE Black Steel ATX Mid Tower Case
Asus P8H61-M LE/CSM (Rev. 3) Micro ATX Motherboard
Crucial Ballistix DDR3 1333 1.5v (2x 4GB)
Gigabyte GTX550 Ti Video Card
Along with the i5-2500K CPU


I'm just curious, with everything put together, what kind of Aftermarket Heatsink can I use that will fit?
I don't have tall ram.

I'm confused about how the dimensions work on a heatsink. IE which way L is compared to W.

Any suggestions?

 

[Juggalo23451]

Cm212 budget
Mugen 2
Dark Knight
Veneomous x
Silverarrow

 

[Dieter]

You got the room for most aftermarket coolers. This one for example would work and is liked by a ton of OC'ers.

Newegg.com - COOLER MASTER Hyper 212 EVO RR-212E-20PK-R2 Continuous Direct Contact 120mm Sleeve CPU Cooler Compatible with latest Intel 2011/1366/1155 and AMD FM1/AM3+

dimensions are usually listed as L x W x H where L is the length the side that runs parallel to the ram (at least the 3 cpu coolers that ive had have been that way) W would be the side running parralle to the gpu and H is how tall it is.