I'm also in the boat for a new mITX mobo. Not for any general reason, really...the P8H67 I've got currently from Asus is nice, but I'm courting the idea of upgrading to a Z77 board and a 690. Just need to figure out if the Silverstone SG07's PSU is enough to handle the card and other parts.
That would depend on what overclock you expect for the CPU. The GTX690 is rated on nVidia's website as 300W draw
, or 25A from 12v. The total system power between a 2600K and 3770K is 14W
at stock full load, since the actual draw of 2600K is 93W
, that makes stock draw of 3770K is 79W, or just over 6.5A at 12v . If you didn't overclock anything, and had a single SSD, one CPU fan and one case fan; then you really don't need more than 450W with around 32A from 12v
Even if you overclocked the CPU to 4.8GHz like in the bit-tech review, assuming you had the same FPO Batch, then your CPU will draw 157W, or 13A. So the total 12v amp requirement goes to 38A
, or any 500-550W unit. In otherwords, you really don't need much power even with the GTX690, assuming you didn't overclock the graphics card. The +600W figure for "system power" is only there for liability, if something were to go wrong that required an RMA, EVGA can blame you for not following the rules. But a +600W unit would be a good fit if you want to overclock the card as well; no pun intended to whatever chassis you decide on.
Remember, drives and fans will have labels that say what power they need, always focus on 12v amp requirements, since that will be the biggest total number that matters because CPU and GPU draw from it.
Unfortunately, a lot of people just aren't clued in about this stuff and if they see the board has "only" an x8 slot they'll think it's not enough, or worse, not compatible with their card. I suspect that's the real reason for leaving out Thunderbolt.
Customer ignorance doesn't play a part versus the demand of Thunderbolt among those demanding a miniITX form factor, that might not add up. Still, if there is only one x16 slot, there is no reason all 16 lanes available aren't going through it, regardless of specification.
<message edited by lehpron on Wednesday, May 09, 2012 11:42 AM>