The A4 performs admirably well in terms of GPU thermals, as good as the GPU cooler allows. I doubt there will be a 3 slot version given Dan is working on the C4 which will sopport that, but it would be cool if he did, would be an easy modification I assume.
The idea of a fan duct with the L9a/L9i is that it creates a tunnel between the fan and the side panel to reduce the effective gap between the fan and the side panel. The AXP90 is tall enough that you can't actually fit a fan duct, and also you don't need a fan duct.
Jdbye you need a fan duct with the L9i/a, look at the following picture from another member, you can get the CAD design for the fan duct from DAN's wenbsite and you can have any local shop 3D print it for you.
The motherboard bending is not a good sign, remount your cooler with less tension on...
There's a setting in the UEFI where you can limit the power of the CPU and therefor the heat it generates. Look for "Long Power Duration" setting and set it to 95 or less. By default the CPU goes beyond it's actual TDP.
From the PCIe bracket we can tell that height and width will fit for sure. I can;t find dimensions, but most likely the length is within the 295mm limit of the DAN A4.
Old cheap keyboards that use the PS/2 connector don't have this problem.
Cheap keyboards that use USB will have problems registering some keys if they are pressed simultaneously. Thus, your problem.
USB keyboards advertised as having NKRO (this is an extra feature) do not have this problem. Most...
Logitech G603. I don't use it with Bluetooth so not sure how long it lasts with it, but with the dongle on endurance mode a single lithium battery lasts me roughly four and a half months.
Can you mount the cooler such that the fins are parallel with the RAM slots? For both Intel and AMD?
I'm thinking it would help exhaust air from the top easier.