Jonsbo U3 is not a bad looking case, it's simple and stylish. However due to the tight space inside, you can only use very low CPU heatsinks. So if you have an overclockable Core i processor, you can only upclock it a little before CPU gets too hot. There's a much older Chyangfun case that fares a lot better.

http://www.chyangfun.com/cfi-axx89.html

This case can accommodate an optical drive, a 3.5" drive, and a small size heatsink such as the Cooler Master Vortex Plus.

http://www.coolermaster.com/cooling/cpu-ai...er/vortex-plus/

Technically, the Vortex Plus can fit into the Jonsbo U3, but the fan would be pressed hard against the PSU. It'll be hard, if not impossible, to find a thinner fan that fits the CPU fan socket as a replacement.

If anyone can find more of this Chyangfun case, please PM me.

Nice piece of information. I am also in the mid of collecting all part to build a HTPC. Will be using a i5-S Slim CPU and SSD (2nd HDD optional) on Macro ATX board....wondering where to by the Jonsbo U3 in KL and how much does it cost ?