Recently finished up a couple mods to my NSK-3300 and figured I'd post some pictures.
First off, have to give credit to krick and porkchop for the clever behind the tray cable routing and HDD suspension. My mods were based on theirs. Here are links to their gallery threads.
Krick's Antec NSK3480 - behind the tray cable management
nsk3400 rev3 (10 pics 953kb)
NSK-3300 w/SS-300SFD (fan replaced with AF8025L)
Phenom II X2 550 BE -> X4 @ 2.6GHz 1.075V
Scythe Ninja (original)
Gigabyte Radeon HD5750 1GB
Arctic Cooling Accelero S2
4x2GB Corsair XMS2 DDR2-800
OCZ Vertex 60GB SSD
WD Green 1TB
And now the pics
For comparison, here's a pic of the internals before the mods.
Here are the holes for routing cables behind the motherboard tray. Same basic idea as krick's mod, except I put some edge molding around the holes instead of using grommets. The holes were made with a 1-1/4" hole saw.
Pic of the inside with everything installed. The cable routing really cleans up the interior and makes it a lot easier to work inside the case. An extension for the AUX12V had to be used, and a Y adapter was necessary for SATA power.
Here's the top compartment. Again, pretty clean thanks to the cable routing.
This is where it gets messy. There's also not a lot of room between the tray and side panel, so care had to be taken to not overlap cables and keep everything as low profile as possible.
Some pics of the clearance between the heatsinks and side panel.
Was kind of hard to get a pic of it, but clearance between the Ninja, Accelero S2, and side 120mm intake fan is very tight. The intake fan is actually right up against the plastic shroud thing on the Accelero S2, I don't think there's any gap between them.
Here's a full pic of the outside of the case. A handle was installed on the top panel. I don't move the case around a whole lot, but when I do, this makes it so much easier. I wish more cases came with handles, I find them very handy for moving stuff around. A pic of the handle mounting is also shown. The handle came with some washers for mounting, but I didn't trust them to handle the weight of the NSK-3300 with everything installed in it, so I used pieces of an aluminum bar I had lying around instead.
Stays pretty quiet at idle, the case fans are Fan 4 (both use the same PWM signal and run at the same speed, although I only have the mobo reading one). Both case fans and power supply fan don't ramp up much at load, case fans get up to 400-500RPM. Power supply fan probably gets up to 600RPM-ish (just a guess, don't have any way to monitor RPM). Running Furmark+Prime95, the CPU gets up to about 50*C (according to the on-chip sensor) and the GPU tops out in the 80s.