[IMAGE]   [IMAGE]   [IMAGE]   [IMAGE] The clearance between the approximately one inch thick fans and the PSU and GPU is too close. So, remove the slotted plastic subpanel from the side panel assembly (3 small screws on left side, then remove a plastic piece from the right side revealing 3 more small screws and it is off) Now, mount the two fans (centered) and make some trim for the fans out of removed slotted plastic panel or out of wood or whatever (leather? clothe? ) Finished picture to follow when project is completed. An additional idea would be to fabricate a filter cover for the fans on the outside or on the inside. An additional idea would be to turn the fan on front case to blow outwards. Then, there would be the two adjustable speed 120mm fans blowing air in, and the two 92mm fans blowing out. Should be positive case air pressure.
I have a Dell Inspiron 5676 Gaming Desktop purchased in 2019. It came with an AMD Ryzen 7 2700X and an AMD Radeon RX-580 4GB Foundation GPU (blower fan model, pulls air from inside case and exhausts out rear of the card). I had previously added a front fan with a connection to the front fan connector on the motherboard, a Noctua NF-A9 PWM chromax.Black Premium Quiet Fan, 4-Pin (92mm, Black). Max fan speed of 2000 rpm (quiet fan)  [URL] The 4GB VRam in the graphics card just isn't cutting it these days (May 2023), so I have replaced it with an XFX Radeon RX-580 GTS XXX Edition 8GB GDDR5 Dual BIOS AMD Graphics Card (RX-580P8DFD6) (Renewed, but looks brand new [URL] ). Instead of a blower model blowing air out the rear, this new GPU has a double fan configuration that circulates air inside the case. Therefore, I would like to make some changes to get better air flow from the front case fan out the rear exhaust fan. So, the plan is A) to purchase two new case fans (front and rear fans) with a separate controller card or B) to purchase just one new fan for the front of case with a higher air flow rating and rpm also on a separate controller card. Any suggestions?  
Dell 5676 Fan Upgrades