Originally Posted by psyclum
the rotated mobo mount is not a flaw in the design. it is an intended feature that few can appreciate correctly. the rotated mobo design is NOT significant when fans are involved INSIDE the case. however the rotated mobo design is significant when looking at airflow OUTSIDE of the case. convection may not make much difference INSIDE the case, however OUTSIDE of the case, it ensures maximum separation of cool intake air from the hot exhaust air. convection will continue to carry the hot exhaust air up away from the cool floor intake air. the rotated mobo design makes it almost impossible for hot exhaust air from the roof to mix with the cool intake air on the floor because of basic convection physics. the only way for a rotated mobo design to have hot exhaust contaminate the cool intake is if the case was in a completely enclosed area where convection can NOT carry the hot exhaust away from the cool intake air.
same can not be said about conventional mobo mount design. there have been many cases where there is a HUGE intake fan on the side window not 3 inches away from the hot exhaust port of the GPU in the back. the low pressure generated from the intake fan on the side panel will naturally pull on the high pressure generated by the GPU/CPU exhaust and you end up with a thermal short circuit where the intake air comes from the hot exhaust air due to proximity.
Yes, you do need to be careful when shopping for a GPU that would be compatible with the FT02. however that is because we are looking at the best performance scenario
. there have been many builds in the FT02 that did NOT use GPU coolers that is considered "compatible" with vertical mounting and the owners have not experienced any detriment from it. in terms of overall design, the rotated mobo design is still the most thermodynamically efficient design due to the convection advantage OUTSIDE of the case. many people think convection is an advantage INSIDE the case, but that advantage is completely negated once a case fan is involved.
I don't doubt that FT02 is a better design, tests show that it's the king of air cooled cases. But the gpu heat pipe orientation issue is a big deal IMHO, to the point where the inverted mb mount almost amounts to a design flaw, given the reality of a market where at least half the Gpus you can buy have heat pipes oriented along the length of the card. CPU cooling is a lot easier than gpu cooling, and it's much easier to achieve quiet CPU cooling than gpu cooling.
This issue came up in the Powercolor pcs+ 290/x thread where a user was trying to crossfire in an ft02, he was going through various brands and not getting good temps. I was getting much better gpu temps in my silenced Define R4 with the same cards. He was getting better CPU temps, but mine were just fine, and quiet also. The problem was that the available 290s with the correct heat pipe orientation were the least effective coolers to begin with, and the ft02 couldn't make up for that, meanwhile, it couldn't take advantage of the better coolers due to the heat pipe orientation.
If the gpu market mostly had the correct heat pipe orientation I'd be all for the ft02 design, but as things stand, I would get an ft04 over the ft02. And I would prefer a direct air path cooling case with the hdd cages somewhere else over the ft04, like the node 804. Those drive cages, once populated, wreak havoc on airflow -- my Define R4 was doing great until I put the hdds in, and now temps are much higher and fans have to spin louder, and I'm looking to replace the case. (I have the Enthoo Primo and Node 804, both sitting empty ATM lol.)