A4-H20 Temps

Hey all, have yet another A4-H20 build. First PC I've built in a decade so I was pleasantly surprised that it went together pretty easily.

I have a question on temps. I have a MSI 4080 super Expert in there. I bought and installed it before I realized that it's the worst cooling 4080, though I like the looks a lot and it fits pretty easily. I'm hitting 78c max in the rdr2 benchmark with everything on ultra at 2k (hwinfo says 89c max hotspot). When actually gaming I'm sitting between 70-77c.

There's a little coil whine but nothing too bad and I think the noise is acceptable after I tweaked the fan curves.

My question is whether or not these temps will effect the lifespan of the GPU? I know they are generally fine but I'm planning to keep the computer for a long time. I guess I could try and return my GPU for another 4080 but I like how this one looks and I'm worried that a traditional 3 fan design would be a bit louder than this FE flow through.

Specs: 7800x3d MSI 4080 Super Expert Asrock B620I motherboard Corsair 32gb ddr5 6000 mghz Crucial 4tb nvme Corsair SF750 Dan lian li A4-H20 Ek nucleus 240mm cooler

Any thoughts would be great! CPU temps have been great so far so no problems there.