Timbermaniac

Yes it will fit the fans on the bottom. But usually usb hub cable will obstruct it. you can use usb adapter to make it fit. I use 6 cm thick gpu and it still fit, but thick gpu will cause turbulence and make loud noise. Decided to run it without bottom fans and the temperature still no change. Alternatively, if you have small matx, cooler master nr200 will fit. but the aio will only fit on the side mesh. And you're gonna need sfx psu.

Just saying.. cooler master nr200 fit small matx. But usually that small matx is a low end motherboard...

velka cases. you will need flex psu and single fan gpu you can't go wrong with node 202 / sg13 / rvz03. There are lots of premium cases like s4 / dancase / ghost s1 etc that will fit in a backpack unless you're building a workstation pc. tu150 / upcoming cm nr200 would be a nice choice.

Some cases are so cheap these days. you can buy 1 for about 30$

lian li is better for air cooling. even though they both can fit D15. The gpu can get intake directly from bottom fans. can fit thick card. The downside, you can only fit 120mm aio. h210i, has smaller clearance on gpu. Gpu that thicker than 2 slot will suffer worse airflow. But it will fit 240mm aio.

Meshify c is the the favourite case of many.

cerberus, cm q300l, raijintek styx. i think all of these case doesnt use glass. Why not keeping the itx ? if you need better cooling in itx system, fractal core 500 can fit noctua d15. or sg13 use it with 120mm aio. both of them can fit in the backpack.

h200 ? fit atx psu, noctua d15.

rajintek thetis or cerberus. raijntek thetis is an inverted case, mediocore airflow. but you can fit 2 x 3.5 hdd and 2 x 2.5 hdd. and you can put big cooler. since i used this case, i can't stand case that bigger than this. so i migrated to matx.

or... migrate to itx. you only need to change the case and the motherboard. There are some itx case that ft atx psu.

If you have thick gpu and atx psu, i prefer 280x. 280x: + you got 2 ll120 fan with the controller (which is expensive) + you can cram double aio or even triple custom radiator and plenty of room with water cooling + you can fit threadripper matx board (x399m taichi) but the real advantage of matx board is 4 dimm slot (useful for people who need a lot of ram) + fit 3 slot thick gpu and still able to put 25mm fan on the bottom. + 2 x 3.5" hdd + can fit long atx psu - no rear fan ( you can use 140mm top fan for better exhaust) - Thicker but almost the same height and length as h200 - need feet extension for better intake (can 3d print it) and spacer at top glass for better exhaust. - 150mm air cooler, which is your best air cooler would be something like h7 quad lumi. Dark rock TF would fit, but hot air from gpu will get direct into the cooler h200 + fit noctua d15 + look nicer on itx board - if you have 2.5 - 3 slot gpu, it won't fit - poor airflow for gpu if you have atx psu. sfx psu can be pricey and louder - stock only fit one 3.5" hdd, but i believe you can use hdd cage to fit 2 x 3.5" If you have sfx psu and want best air cooling. Lian li TU 150 is a better choice. you still able to fit noctua d15 and have bottom intake fans for gpu.

Funny thing, i live in indonesia and both h200 & inwin a1 is available at low price. And now, we have evlov shift air available right now

Raijintek thetis. As small as small matx case. Just 36 x 36 cm. You can fit 2 x 2.5 hdd, 2 x 3.5 hdd and add 1 more 2.5" in front of the psu. You can add two 2 x 2.5" ssd bracket to pci slot /4 slots m2 pci accesory. Plus 2 m2 slots in mobo. For airflow, Top 2x intake for gpu. Bottom intake for single tower air cooler. But if you want to change to aio cooler, you can add small single aio radiator to rear slot and make bottom fan exhaust for hot air inside the case.