As others are saying, the SFX-L style PSU size would make a big difference. But Corsair PSUs are very hit and miss. Some are quite good while others are utter garbage. I don't know who makes their SF series so have no idea if they are any good.
Originally Posted by psyclum
in all honesty... i actually don't think it matters too much in this case
yes the PSU is blocking airflow, but in a chassis like this, it's less of a problem. he has 2x140mm intake which will deliver massive amount of airflow in a VERY small volume of space. meaning he will be replacing the air inside the case quite rapidly. yes ideally you want some vent holes on top of the GPU slots, but considering the proximity of the rear exhaust and the overall volume of air in the case, it's less of a problem. personally i'd move the rear exhaust fan and place it on the floor in front of the PSU as intake fan that way you have 2x140mm and 1x120mm intake with no exhaust fan. there are PLENTY of vent holes at the roof and rear exhaust port that you don't actually need forced exhaust as long as you have good intake.
what we have to keep in mind is the total volume of the case. 2x140mm intake can already replace the air inside the case maybe 40x per min (depending on fan profile) there isn't ALOT of cubic feet inside that case so the amount of cooling is already phenomenal.
Warning: Spoiler! (Click to show)
so what if the PSU is blocking some airflow to the GPU, the surface area provided by an internal exhaust GPU cooler will still cost less decibel to run then a blower cooler at gaming loads CONSIDERING how quickly he's replacing the air inside the case.
generally, internal exhaust GPU coolers are not efficient since they heat up your internal components. but in this case, the heat that is absorbed by the CPU HSF will actually act as a fan controller. hotter the GPU, the more heat is absorbed by the CPU HSF and CPU heats up. and as CPU heats up, the front intake fan automatically speed up to feed more cool air for both the CPU and GPU. it will take some time to fine tune your fan speed in bios but once it's done, it should work very well.
IMO either card will work well. however i still feel the internal exhaust card will offer a slightly lower acoustic profile under gaming loads
The problem is not the 2x 140mm intake fans. The problem is the case does not have 2x 140mm of exhaust area of airflow .. What comes into case much have a way out. In this case it only has 1x 120mm exhaust vent, so in this case the 2x 140mm intake fans can only flow 1x 120mm vent of air though the case. Obviously there will be a small amount air leaking out other small holes in the case, and if the front half of bottom vent is not block the balance will flow out there. But If the front half of bottom is left open that airflow is not doing anything to help cool components.
You keep talking about case volume, but honestly case volume means little to nothing.
It does not matter if the case is small or large, If both cases have same intake and exhaust venting and fans, they will flow the same amount of air.
You talk about how 'replacing the air inside the case quite rapidly'.
It is not important how many times the air is replaced. What is important is how cool the air is going into components.
It is all about supplying components with cool air. The closer to room ambient the better.
If we have 2 identical systems,
one with air being replaced 5 times a minute with the air flowing into components is 10-20c above room ambient ..
the other with air being replaced 1 time a minute with the air flowing into components is 3-5c above room ambient,
which one will be running cooler?
Yup, the components in the one flowing 1/5th as much air is running 5-17c cooler ..
Again, even though one case is flowing a fraction as much air and making much less noise, it's components are 5-17c cooler.
Case only needs to flow a little more air than components use ..
Edited by doyll - 7/4/16 at 5:51am
Remove components hot air ..
without mixing with cool airflow supplying components..
No hot air mixing and heating up the cool air means components runs cool.