Temperatures with the V10 were quite good, equaling in fact the results I'm used to seeing with my Swiftech water cooling system. Load temperatures were the most impressive, not going above mid-40's even with 1.5v applied to the CPU.
The Cooler Master V10 Hybrid TEC cooler is my first experience with any sort of peltier cooling, and I was not sure what to expect. Certainly there have been other air coolers that made use of a TEC incorporated into the base, however this is I believe the first I've seen used with a heatpipe plate off to the side. In this way, Cooler Master has designed the V10 to use standard heatpipe air cooling when the processor is idle, and only turn on the TEC when temperatures reach a certain point. When exactly that is I'm not sure however my guess is somewhere in the upper 30's to low 40's. This is why I opted to give the CPU some extra juice during testing, just to see how the temps responded.
When it came to performance, the V10 is almost assuredly the best air cooler I've tested to date. With temps rivaling those of a decent water-cooled setup, the Cooler Master V10 handled anything I threw at it with ease. The 4-pin PWM controlled fans automatically adjust speed to match demand, and yet even when running at full tilt are very quiet. Cooler Master claims up to 90cfm with as little as 17dB, and while those might be best case figures, you will be hard pressed to hear them over any other fans in your case.
Size is one thing that might hurt the V10, as this thing is most definitely huge. As I said earlier, the only way it fit in my case was to leave the front and top panels off. Granted my case is small even compared to most mid-towers, however I would recommend a full tower for maximum space to take advantage of the multi-positional mounting. This will allow you to orient the V10 where ancillary cooling will benefit surrounding components the most.
Another downside is the price. While most high-end air coolers can typically be found in the $50-$60 range, the Cooler Master V10 is anywhere from $100 and up. Although compared to other air coolers with incorporated TEC units the price probably isn't far off the mark. And it's still cheaper and less painful than installing a water-cooled system, with all the performance of one. The Cooler Master V10 Hybrid TEC cooler earns the OCIA.net Seal of Approval.
P.S. - We will be taking a closer look at the V10 to see if it is feasible to modify the TEC so it can be controlled manually or have it stay on full-time.