The U9S is configured to pull from the back of the case to the front. So the 140 exhaust GPU + CPU.
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DAN C4-SFX
- Thread starter dondan
- Start date
Those esthetics parameters (feet, button visible, etc...) are 100% subjective..
(even with standard design GPU - open design)
Not really. Similar fan setup with cerberus case family...side exhaust is best solution for GPU temperature..
(even with standard design GPU - open design)
Thermaltests are done I will show the results in the next days.
I will show the results in the next days.
Doesn't that mean that the CPU is pulling in air heated by the rear exhaust of the GPU? Not that I have that much faith in the efficacy of the "axial fan blowing into a heatsink and being shunted 90° out a slim opening" airflow design of that part of the GPU, but with a 320W GPU there should be a decent amount of heat coming out there. Just for giggles/science, could you try to rig up some sort of baffle separating the GPU rear exhaust and the CPU intake (if the PC is still in this configuration of course)? Taping a sheet of paper in place should be sufficient to test whether this is pushing heat into the CPU.
should still be the same # listed in the 1st post as 11.98L is still the current-final volume
So in sandwich mode the pump can only be 62mm high, right?
In classical layout with a 30mm radiator and 25mm fans is it the same height for the pump or can the pump be higher in classical layout?
In classical layout with a 30mm radiator and 25mm fans is it the same height for the pump or can the pump be higher in classical layout?
It's been talked about a few times, but I just want to echo other comments. It would be really really awesome if there was some solution for getting the sandwich style to have 3 full slots rather than only 1 accessible.
I'm thinking of bifurcation possibilities. The sandwich style should easily allow a Bifurcation riser and multiple pcie slots. Obviously that would allow for multiple gpus, and other cool possibilities.
I'm thinking of bifurcation possibilities. The sandwich style should easily allow a Bifurcation riser and multiple pcie slots. Obviously that would allow for multiple gpus, and other cool possibilities.
If you use a custom bifurcation PCB for the C4-SFX just make it this way:
1slot (behind the full accessible slot) = Network card/capture card/ sound card s.o.
2slot (behind the 3/4 accessible slot) = GPU (on a modern GPU like RTX 3080 it would be possible to use 3 DP ports.
1slot (behind the full accessible slot) = Network card/capture card/ sound card s.o.
2slot (behind the 3/4 accessible slot) = GPU (on a modern GPU like RTX 3080 it would be possible to use 3 DP ports.
Can someone explain to me a thing I see very often in m1 and also here in classic layout: building fans directly underneath the gpu with no gap in between. How can that be efficient in any way? Are there any testresults ? because I‘m sure that’s doing almost nothing but adding noise. All I know is that fanblades are basically airfoils and airfoils work really bad in turbulent air.
Try to smell your fart while driving on a bicycle
The two fans activly running working like a perfect GPU fan duct. Because of the air stream it is impossible for the GPU to pull in hot air. It has to pull in the fresh air from the bottom fans.
I made a small test one with running bottom fan one with stopped bottom fan:
GPU without bottom fans = 80°C 2500rpm
GPU with bottom fans= 74°C 1650rpm
So yes these fans have a big impact.
The two fans activly running working like a perfect GPU fan duct. Because of the air stream it is impossible for the GPU to pull in hot air. It has to pull in the fresh air from the bottom fans.
I made a small test one with running bottom fan one with stopped bottom fan:
GPU without bottom fans = 80°C 2500rpm
GPU with bottom fans= 74°C 1650rpm
So yes these fans have a big impact.
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You're thinking about it a bit backwards. GPU fans aren't controlled through how much airflow they deliver after all, but GPU thermals. So if there's a bigger, external fan already feeding air into the GPU heatsink, the GPU fan controller is less likely to ramp up the smaller, louder GPU fans. There's simply less work for them to do. So while you're probably right that the GPU fans do less work per rotation with fans blowing directly into them, the cooling effect is still better as the overall volume of air moving through the heatsink is much higher. You could probably achieve similar results by deshrouding the GPU and making a fan duct from the case fans and onto the heatsink, though it's likely that the GPU fans help a bit in forcing air through dense fin stacks (smaller fans typically have better static pressure specs, and pressure adds up with more fans even if flow doesn't).
This means without the bottom fans the GPU will be cooler and the fan of the GPU will run at lower noise?
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Remember that you'd need something like 6-7cm added to the bottom for cable routing, unless you want to start hunting for angled connector DP and HDMI cables. 5cm would be an absolute minimum IMO. You'd also be placing the centre of gravity very high in the PC (PSUs are heavy), with essentially a box full of air at the bottom, so stability would be poor. It would work, but it would look significantly bigger, and you'd need to be careful not to tip it over. This all of course also applies to the C4, though its wider stance should alleviate stability concerns somewhat.I'd like to see a stand for the A4 as well
Ok that makes sense.Try to smell your fart while driving on a bicycle
The two fans activly running working like a perfect GPU fan duct. Because of the air stream it is impossible for the GPU to pull in hot air. It has to pull in the fresh air from the bottom fans.
I made a small test one with running bottom fan one with stopped bottom fan:
GPU without bottom fans = 80°C 2500rpm
GPU with bottom fans= 74°C 1650rpm
So yes these fans have a big impact.
Wouldn‘t it also be a good idea to use fans that Spin the opposite direction then the ones the gpu uses? I think the Scythe Fuma is using the same concept and it’s working pretty good. Judging by the pictures scythe Kaze fans are spinning clockwise oppose to most other fans including gpu‘s.
