MSI Ventus 5090 Fan deshroud Actic mod

A fan shroud and cover for the Ventus MSI 5090 3x. Designed to fit Arctic P12 and P8 fans.

Adapted from the original by @Saigon_237393 who made the shroud for Noctua fans and in one large section.

I sliced the original into multiple parts for printing on smaller printers and made some changes including adapting the cover for Arctic fans.

If you don't want to print the "shroud" parts only, you can use any 120mm and 80mm fan. The "cover" parts only fit Arctic fans - they are a strong friction fit, no adhesive needed.

Method is print the two parts of the shroud, and plastic weld or superglue them together.

Use threaded inserts in the holes melted in with a solder iron:

12 M3 threaded inserts (for the fan mount holes)
8 M2 threaded inserts (for the posts on the bottom of the shroud
12 M3x8 (or M3x10 screws) to connect the fans to the shroud.
8 M2x8 screws to connect the backplate (the original design used the original backplate screws which are M2x6 but I found they were too short).

There is a space for an MSI logo recess or any other logo superglued in if just printing the shroud.

I used ABS with a 35% infil - ABS just for the extra heat resistence as PLA may become soft with a hot GPU.

The original is here. https://www.printables.com/model/1328369-msi-rtx-5090-ventus-3x-deshroud

The cover again comes in two parts and are plastic welded or superglued together. I created some side plates to glue over the sides for added strength. I did these in white PLA to match the black and white aesthetic of the Arctic fans. The cover presses in over the fans - leave the fans loose and not tightened in as you press fit the cover to let it get into the right position, then tighten screws after.

You can connect these fans to a spare motherboard header and control with "Fan Control" free software - or connect to the GPU's internal fan header with mini 4-pin pwm adapters. I recommend the former.

Remove the OEM shroud and fans. They come apart easily by unscrewing the 8 M2 screws from the back. Fan connectors are tight but easily accessible, but VERY hard to get off if you don't do it right, as this type of fan plug has little pin/clips inside which lock them in. MSI unhelpfully put those pins on the heatsink side - almost inaccessible. The way to get them out is to get some curved needle nosed tweezers (very sharp) and curve them over the top of the plugs on the heatsink side, and push the two spikes into the fan header housing to slightly separate the housing and the fan header, to push the hooking teeth/pins our of their sockets, this lets you remove them. I made a crappy picture to illustrate. Once the sharp pins are jammed into the gap between the plug and the socket, it will unhook the teeth and let you ease out the three mini pwm fan plugs. do NOT just pull them without prying apart, they may rip out of the board.

This deshroud runs almost dead silent with radically better temps than the stock leaf blower. It's still a little worse than an astral or other high end 5090 simply because the heatsink itself doesn't have as much mass or a vapour chamber, but it's getting there.

I cut a small notch out of the bottom of the cover to route the fan cables - the cover fit is so right that it makes it bulge without this notch.

Enjoy!

Adapted the fan cover to fit arctic P12 and P8 fans instead of Noctua. Split the pieces in two for use on smaller printers. Some other minor tweaks.