The truth is that most PC cases are bigger than necessary.
Why Is an Oversize Case A Problem?
If you want to build a workstation to rival a data center in size, go for it!
Justin Duino / How-To Geek
You may not have as many RAM, SSD, or PCIe slots as larger boards.
Most importantly, your case needs to be long enough to accommodate the card you want to use.
There is an enormous difference in size between a halo card like theRTX 4090and even the next card down.
An affordable yet high-tech and attractive All-In-One CPU Cooler
Generally if you’re in the market for a $2000 Titanic-sized GPU, you know it.
However, whether your case size is going to create thermal issues depends on the details.