Well no matter how large are the corner gaps, it can’t compare as if it had a mesh front. Airflow would increase vastly. Anyway your temps are fine so it’s not a must, at least GPU temp wise. How is you CPU temp under heavy load? Did any test? No need to run some torture test, just normal stuff. Like Cinebench R20 in a loop run for a few minutes. If CPU passes 80C maybe you should consider improving case airflow. Max operating temp is 95C for CPU, but it shouldn’t go near that.
Run some games too for a couple of hours each, with HWiNFO open(minimized) so you check later.
Some suggestions
You have 6 main columns on HWiNFO which is dense, so you can’t see the forth value of the Avg. It has its meaning. So maybe it’s better to make them 5. The 5th will be longer and will need scrolling but it’s ok. You can always have it shown what you want. SSD/HDD info is not all that important.
Min and Max values may “exist” only for very short periods of time. Average is important too.
In order to make sense though HWiNFO has to “record” values only during the task you want. So when you want to see game or any kind of benchmark results, you hit the clock down right and start the app/game as soon as possible. After finishing, as fast as you can you maximize HWiNFO and take a screenshot for later study. You can paste it (Ctrl+V) on windows painting app to save the image.
You can do this procedure for:
1. Games (at least 2 hours)
2. Benchmarks (single or multi thread for as long as they last)
3. Idle or mix of light loads like browsing, watching videos (at least 2 hours)
Post them here if you like
Have updated your
Windows
Board BIOS
Chipset drivers (always straight from AMD drivers download page)
You may find a lot of the info and values on HWiNFO sensors window unknown or irrelevant but believe me it will help you understand you system better, and faster. And in order to improve it, if it has any headroom, you should first get to know and learn it.
I and others I’m sure, can help you achieve that.