note that i review this use 2-way slus . be aware that this product have a heat sink\/fan that do not force the air out of the system . it appear there be gap all around the heat sink\/fan , and while it do push out a little heat through the back of the system , i notice most of the heat be push back into my system . this increase the overall temperature of my computer system ; cpu , hdd etc. . SLI in idle be about 50c and 30c and the noise level be hardly noticable . Games that push the video card to max utilization would push 100c for both card over a 30 minute session . the heat also lead to a noise issue since the onboard fan be run at maximum speed ; very noisy and noticable . at one point i take off the side of my case and focus a 32 '' Patton fan , at full speed , directly at the video card ; it drop the overall temperature by about 5c . I use MSI Afterburner and EVGA precision x to get the reading . pro ---------- - very fast ! I notice a big jump in performance gain from my 460gtx . con ---------- - do not force air out of the system ; circulate hot air back into the system . - run Hot . 100c for demand game -lrb- Deus ex : human revolution -rrb- and about 90c for other game -lrb- portal 2 -rrb- - Noisy .