Question Cooling help for my new build, I'm not sure if I have enough cool air coming in ?

[Franknj229]

I finally got my hands on a white 5090 and have started compiling the parts for my new build. I have been overly obsessing about the case, but I've decided to just go with it since I'm never going to get this thing built at this rate. I'll list what I have so far, but I have a question about airflow in the Tower 600 case in the horizontal display configuration.

I'm building in a Thermaltake Tower 600, and could honestly go either way with the position of the case, but I've already purchased the stand kit in order to lay it on its side, so I'm hoping that works out.

For the sake of clarity, I'll explain my "fan plan" as if the case is standing upright first.

The top of the case will have 3 x 120 mm fans (looking at Lian Li SL Infinity wireless) - Exhaust
The right side will be my 360 aio (looking at Lian Li Hydroshift 2 TL) - Exhaust
The left side will be 3 x 120 - Intake (With my GPU parallel to those fans on the left side, looks like it's hanging down from the top of the case)
The bottom will be 1 x 140 directly below the short edge of the GPU, and 1 x 140 above the PSU - both intake

Now lay the case on its left side. So with the setup above, I now have 3 x 120 intake on the new bottom blowing into the GPU fans and exhausting out the top with my 360 aio. The right side now has the PSU toward the top, with a 140 intake fan next to it, and another 140 intake fan facing the edge of the GPU. The new left has 3 x 120 exhaust.

My concern is that the 2 x 140 right side intake fans won't be sufficient since one of them is just pulling warmer PSU air into the case, and the other is at least partially blocked by the edge of the GPU. So I feel like all my intakes are blowing warmed up air into the case.

I could make the left side 3 x 120 intake, but changing the right side 2 x 140 to exhaust seems odd too, since one the fans is pretty much blocked by the PSU. And having them all set to intake would mean my only exhaust is the 360 aio. There is space on the back of the case for 2 x 140 fans, but that will take up a lot of space I would otherwise need for cable management, and I can't see them doing much for airflow being behind the motherboard and surrounded by cables.

As far as usage, on the productivity side, things could change in the future, but I'm not currently going to be pushing this very hard. On the gaming side, I would like to play AAA games at high settings, eventually on a 5k2k monitor if they make one without such an aggressive curvature as the current LG model.

So frustrating. Thoughts? Suggestions? Anyone with this case find a good setup?

CPU: 9950x3d (already have it)
CPU cooler: (Leaning toward Hydroshift 2 TL 360. Other than Hydroshift, case can support 420 aio)
Motherboard: X870E AORUS Pro Ice (already have it)
Ram: Corsaire Dominator Titanium 2 x 48GB DDR5 6000 (already have it)
SSD/HDD: Samsung 990 Pro 4TB
GPU: Aorus Master Ice RTX 5090
PSU: Haven't picked a specific one yet. Leaning toward a 1250W. All white build, but I don't think color will matter for the PSU)
Chassis: Thermaltake Tower 600 Snow with stand kit and LCD kit
OS: Microsoft - Windows 11
Monitor: Haven't decided yet.

Thank you!

 

[Lutfij]

Now lay the case on its left side. So with the setup above, I now have 3 x 120 intake on the new bottom blowing into the GPU fans and exhausting out the top with my 360 aio. The right side now has the PSU toward the top, with a 140 intake fan next to it, and another 140 intake fan facing the edge of the GPU. The new left has 3 x 120 exhaust.
If you follow the laws of physics, heat always rises, so your idea of having 3x fans at the top set to exhaust will need to be set to intake when you lay the case horizontal. In fact, let's just talk with the case on it's side with the I/O facing to the left of the screen/picture/scenario(and the LCD facing the right). Here, you set all fans to intake except for the AIO that's mounted above the motherboard's VRM heatsink as illustrated in this showcase video;

View: https://youtu.be/lAvOkwJ2hs8?t=46

which will be set to exhaust.

That being said, you might want to reconsider populating all fan mounting positions with fans, as they will generate a humm/noise. Sometimes you just work with bare minimum and then gradually work your way up = AIO at the top, exhaust & fans at the bottom set to intake.