Question Suggestions for new case fans

[DFriedo]

Hello
Not so long ago I've built my first gaming PC.
When playing games I noticed that my GPU becomes very hot (about 76-80 Celsius) and I want to replace the fans that came with the case for better cooling. (NZXT H500i)
My case supports 1x120mm (rear) & 1x140mm/1x120mm (top) fans. I need some suggestions for good fans, and do you think I will need to buy an adapter in order to connect them to my mobo?
Also, I have the NZXT Kraken X62 AIO cooler, and I was wondering whether I should change it's fans to better ones in order to get maximum cooling?

Here are my specs:
PCPartPicker part list / Price breakdown by merchant
CPU: AMD - Ryzen 7 2700X 3.7 GHz 8-Core Processor ($299.99 @ Amazon)
CPU Cooler: NZXT - Kraken X62 Rev 2 98.17 CFM Liquid CPU Cooler ($149.89 @ OutletPC)
Motherboard: Gigabyte - B450 AORUS ELITE ATX AM4 Motherboard ($100.86 @ Newegg)
Memory: Corsair - Vengeance LPX 16 GB (2 x 8 GB) DDR4-3000 Memory ($109.99 @ Amazon)
Memory: Corsair - Vengeance LPX 16 GB (2 x 8 GB) DDR4-3000 Memory ($109.99 @ Amazon)
Storage: Addlink - S10 240 GB 2.5" Solid State Drive ($33.88 @ Amazon)
Storage: Seagate - Barracuda 2 TB 3.5" 7200RPM Internal Hard Drive ($54.99 @ Newegg)
Video Card: Gigabyte - GeForce RTX 2070 8 GB WINDFORCE Video Card ($498.99 @ SuperBiiz)
Case: NZXT - H500i (Black/Blue) ATX Mid Tower Case ($99.99 @ Amazon)
Power Supply: Antec - High Current Gamer Gold 750 W 80+ Gold Certified Fully-Modular ATX Power Supply
Total: $1458.57
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2019-03-09 10:57 EST-0500
Any help would be appreciated.

 

[Bearmann]

I question whether changing out the fans will make much of a difference. Can you adjust your fan profiles so that they run at a higher RPM? Is your GPU mounted vertically? Placing it horizontally should lower its temps.

 

[computerjoe314]

You might just want to crank up the fans on the graphics cards.
If you wanted better fans, you'd end up spending decent amounts.
You might want to get a case with better airflow instead.

 

[Calvin7]

my GPU becomes very hot (about 76-80 Celsius)

That is a normal temperature.

"Under a 20 minute load test using Heaven 4.0, the RTX 2070 reached a max temperature of 74 degrees and a max clock of 1890MHz. These temps are consistent with the other RTX Founder’s Editions, and not really much of a concern."
https://www.ign.com/articles/2018/10/16/nvidia-geforce-rtx-2070-founders-edition-review

I often see posts from people claiming their video card is too hot, when they have no idea what the normal temperature is. Perhaps they are confusing it with CPU temps.