JUNEK9 did you replace just the heatsink? As in, did you put the vapor chamber heatsink inside the aero shroud? Or did you use the whole FE shroud and heatsink? It's also possible the card has a custom MSI bios that is more likely to ramp the fan rpm up at lower temperatures because the original Aero cooler is crap. Do you use any OC/tuning software like Afterburner? Maybe try making a custom fan curve?
In either case, I definitely recommend trying to seal the gpu to the side of the case. I got this adhesive weatherstripping from a hardware store for just a few bucks. It should be tall enough to meet the side of the case. So, I guess 1/2-5/8in (15-20mm). I think I posted something on this many pages ago. Here's some more pictures.
This ensures the gpu can only draw in cool, fresh air and not any hot recycled air. Pretty simple. Avoid getting the seal too close to the fan or it will actually make more noise.
I also have 40mm fans on the side of the gpu chamber but honestly they don't do very much. Though I highly recommend getting fan filters if you don't already have them. These are generic magnetic ones. I did close off half the gpu chamber too as you can see towards the top of the picture, this increased pressure inside the case. Which works well when combined with a sealed cpu fan to greatly increase pressure inside the case. Below is the sealed cpu chamber which took quite a bit of trial and error to get the seal close but not touching the face of the fan.
Hot air is ejected out the sides of the case pretty forcefully. Without this seal the cpu fan is totally passive, not really causing a net change in pressure, so it can't bring in as much fresh air or force out much hot air. With the seal, the cpu fan becomes a high pressure inward facing case fan. So additionally sealing half the gpu compartment, and some of the cpu side (obviously not where it would be choking the cpu or psu) can greatly increase positive pressure.
I've done a few tests with and without seals I think it genuinely makes a difference. But as always, your mileage may vary. If someone has a better solution or a tweak to anything I've mentioned here, definitely share.
In either case, I definitely recommend trying to seal the gpu to the side of the case. I got this adhesive weatherstripping from a hardware store for just a few bucks. It should be tall enough to meet the side of the case. So, I guess 1/2-5/8in (15-20mm). I think I posted something on this many pages ago. Here's some more pictures.
This ensures the gpu can only draw in cool, fresh air and not any hot recycled air. Pretty simple. Avoid getting the seal too close to the fan or it will actually make more noise.
I also have 40mm fans on the side of the gpu chamber but honestly they don't do very much. Though I highly recommend getting fan filters if you don't already have them. These are generic magnetic ones. I did close off half the gpu chamber too as you can see towards the top of the picture, this increased pressure inside the case. Which works well when combined with a sealed cpu fan to greatly increase pressure inside the case. Below is the sealed cpu chamber which took quite a bit of trial and error to get the seal close but not touching the face of the fan.
Hot air is ejected out the sides of the case pretty forcefully. Without this seal the cpu fan is totally passive, not really causing a net change in pressure, so it can't bring in as much fresh air or force out much hot air. With the seal, the cpu fan becomes a high pressure inward facing case fan. So additionally sealing half the gpu compartment, and some of the cpu side (obviously not where it would be choking the cpu or psu) can greatly increase positive pressure.
I've done a few tests with and without seals I think it genuinely makes a difference. But as always, your mileage may vary. If someone has a better solution or a tweak to anything I've mentioned here, definitely share.