Hi Svartberg, to answer your questions:
5 - I try to ground myself on the computer's chassis before handling components (plugged in but turned off is best) - however I not sure it's a big issue, never had an trouble, just don't be wearing a really static jumper!
1 - The screws for the fans/bezel, which is all one piece, are underneath so you have to take the heatsink off first to get it apart.
2 - Yes just zip tied the fans to the heatsink. 92mm fans don't fit comfortably, I tried. Can be made to work etc but not sure any benefit.
3 - No issues with fitting the Twin Turbo, dead easy, the hardest bit is breaking the original thermal paste. Just take out the 4 spring loaded bolts from the back of the card and then twist/wiggle the original heatsink off.
4 - Didn't use any extra heatsinks, the Card has one low profile one screwed to it that I've left well alone and as the RAM etc doesn't have any cooling beyond spilt air from the main fans I didn't bother. Passed experience is for best adhesion is to clean the RAM chips etc with Arcti-Clean (or similar) first, makes a lot of difference. Never used glued ones (yet) but for tape I use a hair dryer to warm the heatsink up first and then press hard on to the cleaned component and hold for 10 seconds or so.
Note: this Gigabyte card uses 3 pin voltage control, some others may well be on 4 pin PWM.
I'll see if I can did up some pictures...
Hope this helps, Seb
First of all thanks a lot for all the info, pictures and the quick response !!
Good to know about having to take the heatsink off, in the case I might as well install the Twin Turbo while I'm at it
100% agree about bottom-to-top airflow, always seemed odd to me how some videocards go against that setup.
Ah sweet, that thing comes with a small heatsink builtin (NVIO i believe), always had compatibility problems with those.
Definitely sounds like you know what you're doing with the chassis grounding, especially about psu plugged but off for earthing.
I'll just affirm ESD is definitely an issue .. never bothered even with chassis grounding myself (silly me) and that has cost me a lot of $$ over the years (including two 400$ videocards), but I've started paying more attention to it recently.
Thanks again mate, real life saver as I'm getting this card first thing tomorrow