Question Corsair 5000D bottom shroud

[SyCoREAPER]

Corsair is infamous for its poor documentation and providing kindergarten pictures rather than descriptions, if they do at all.

I digress.

There are two shrouds at the bottom. A open table style insert and a sloped insert and I'm conflicted.

The open insert on one hand allows free open airflow including to the PSU (which may not seem beneficial to many but it is long term). However a bunch of air is wasted at the same time.

The slope on the other hand directs air all into the case instead of the PSU nook. This obviously results in negating the aforementioned cooling but also at least I think it would create turbulence as the lower fan is virtually blowing right against that and into the airflow of the middle fan. There may be a volume increase but id have to test that myself and am not worried about that yet.

What are everyone's thoughts?


Build:
9800x3D
X670e
360 AIO with VRM cooler
4090
Fans:
140mm rear exhaust
3x 120mm top exhausts (rad)
3x 120mm side intakes
3x 120mm front intakes
^I know this is a positive pressure scenario and usually aim for neutral but have have good results.

 

[Lutfij]

The slope on the other hand directs air all into the case instead of the PSU nook.
The PSU will derive it's own cooler ambient air from the ventilation at the bottom of the case.

I think it would create turbulence as the lower fan is virtually blowing right against that and into the airflow of the middle fan.
That would be beneficial if you had a long GPU to contend with in the chassis. Since you have the case in hand, you could see if the curved piece assists the airflow in your chassis, resulting in reduced temps.

Just an FYI, sometimes turbulence is necessary to help with airflow, that depends on the design of the case. You could also have a bunch of fans from the front area blowing cool ambient air into the case without any exhaust fans.

 

[SyCoREAPER]

The slope on the other hand directs air all into the case instead of the PSU nook.
The PSU will derive it's own cooler ambient air from the ventilation at the bottom of the case.

I think it would create turbulence as the lower fan is virtually blowing right against that and into the airflow of the middle fan.
That would be beneficial if you had a long GPU to contend with in the chassis. Since you have the case in hand, you could see if the curved piece assists the airflow in your chassis, resulting in reduced temps.

Just an FYI, sometimes turbulence is necessary to help with airflow, that depends on the design of the case. You could also have a bunch of fans from the front area blowing cool ambient air into the case without any exhaust fans.

That would create stale air IMO and not promote a smoothish airstream pass over the components. Kind of like sitting at the gas pump waiting for your turn except in this case hit air waiting for it's turn to exit as there'd only be one path, up, which is already denser because it's pushing hot air in the radiator.

I know I threw a lot back but I'm white boarding, not arguing, where my mind is going.

It's just that shelf that I'm not sure about since I can't find the proper verbage to get relevant Google results.

As you said there are variables and maybe I have to run a airflow simulation. It very well might be better but looking at it now in person and not from memory, that middle fan is hitting the lower fins of the 4090s cooler and mostly going to it's three fans. Lower one is half going to PSU and back up through the mesh separator/shelf and half hitting the gpus fans.

 

[Phaaze88]

I would run a smoke test to find out. I gotta get hands on for things like this, or I'll constantly second guess myself.

 

[dev_cyberpunk]

The slope on the other hand directs air all into the case instead of the PSU nook. This obviously results in negating the aforementioned cooling but also at least I think it would create turbulence as the lower fan is virtually blowing right against that and into the airflow of the middle fan. There may be a volume increase but id have to test that myself and am not worried about that yet.

That is a better configuration as that is the normal arrangement in static air pressure cooling. That is used in servers. I have a raidmax case with a fan arrangement like that: 3 located on the side in the front, and one in the back. I just question the quality on fans now these days as 100 cfm or greater is the real specifications for 120mm case fans.

But I would choose either the three in the front and tape off the sides or the three on the sides and tape close the others with aluminium tape. So the air pressure is forced to the back. As their fan arrangement for the front and side was originally to pull in and push out through radiators and not cool the inside of the case.

Its a good fan arrangement, just have to set it up for air cooling if you are doing that.

 

[SyCoREAPER]

That is a better configuration as that is the normal arrangement in static air pressure cooling. That is used in servers. I have a raidmax case with a fan arrangement like that: 3 located on the side in the front, and one in the back. I just question the quality on fans now these days as 100 cfm or greater is the real specifications for 120mm case fans.

But I would choose either the three in the front and tape off the sides or the three on the sides and tape close the others with aluminium tape. So the air pressure is forced to the back. As their fan arrangement for the front and side was originally to pull in and push out through radiators and not cool the inside of the case.

Its a good fan arrangement, just have to set it up for air cooling if you are doing that.

I did end up using the slope but have kept all fans the same as my temps are excellent. CPU hasn't gone above 70 and GPU** hasn't gone above 64. Internal case was around 20-25C.

**Beating the crap out of GPU with Indiana Jones mostly maxed out with RT, 100% GPU load for multiple hours.