My dimensions are w/ out the front fan so my width is 125mm and yours is 130mm. Your definitely good on width.
Yours looks to be .47 inches taller then mine so under 1/2" (height). I measured from the heatpipe caps at the top of my heatsink and it looks to have about 1 1/2" from the heat pipe to the window roughly. (Mines 158mm)
Your Length more then mine by 40mm (mines 130mm) so that equals 1 1/2". So it should be 3/4 of an inch longer then mine in each direction (toward the graphics card and toward the top of the motherboard).
http://www.xbitlabs.com/articles/coolers/display/thermalright-silver-arrow-sb-e_2.html
I think you will be ok.
Thats a really nice heatsink
Edited by Lucky 23 - 4/29/12 at 6:15pm