The #1 from this set fits them perfectly. I bought mine at Lowe's.

teknokanix

The #1 from this set fits them perfectly. I bought mine at Lowe's.

Alright, thanks! I already have a precision philips set that size.. 
I think I'll see if I can find #1 screwdriver set with bigger handles as that seems to be what people are recommending elsewhere.
 
  Edit: Found a set that has both #0 and #1 with big handles..  I think that should do it..  Thanks a lot for your help.
 

ty_ger07
I hope that "#1 screwdriver" does not refer to #1 Phillips screwdriver size.  #1 Phillips is too large and will strip the screw head out since it will only grab the top surface of the screw and not slide all the way in to grip the screw farther in.  The correct size is #0 Phillips.

 
I have used the #1 out of this set for years to remove the screws from video cards. Including a GTX 470
I have never stripped out the first one.
It's not rocket science.
Just keep the screwdriver straight and apply firm pressure.

EDIT

EDIT

NerdGZ

the #1 screwdriver is the measure

Thanks for the confirmation.
For me the #0 was to small and the #1 was a perfect fit.
I didn't feel like arguing over such a pointless matter and that's why I deleted my previous comments.

Wow~ That's very enlightening..  I've heard the Snap-Ons are the best scewdrivers money could buy.
Is it possible some of your screwdrivers are just worn down a bit? 
 
So the #1 Apex is the best? Is that a brand new Apex or something you've had for 10 years and might be worn town perhaps?
 
 

Hmmmm...  OK, I've come to the conclusion that screw driver sizes are all FUBAR...
 
Take a look at this.. These are BOTH PH-1 tips from two different sets of screwdrivers.
 
http://sidicas.dyndns-server.com:8090/Screwsizes/PH1_01.png
http://sidicas.dyndns-server.com:8090/Screwsizes/PH1_02.png
http://sidicas.dyndns-server.com:8090/Screwsizes/PH1_03.png
 
It looks like there exists a PH1 tapered tip and a PH1 untapered tip and I have both of them.   Is your Apex #1 tapered while your Snap-On #1 not tapered?  Perhaps this tapered PH-1 tip is the definitive size? Anybody else able to put in any inputs on whether their PH-1 that they used is tapered (extra pointy) or not?

Edit: BTW, let me know if you can't access the above URLs.  Yes, I know they're slow, sorry.

http://d.imagehost.org/0977/PH1_01.png
http://b.imagehost.org/0218/PH1_02.png
http://d.imagehost.org/0348/PH1_03.png
How's that?

I've been staring at them for half an hour..  It's starting to look like one of them has a slightly longer tip than the other. Everything else is the same (same angles, same diameter at the base, etc.). One of them has a longer tip and so it's tip is smaller.
 
 

greeny2k9

Sidicas
I've been staring at them for half an hour..  It's starting to look like one of them has a slightly longer tip than the other. Everything else is the same (same angles, same diameter at the base, etc.). One of them has a longer tip and so it's tip is smaller.

I don't know if my screw problem the same as yours. I've trouble in taking off the screws on my GTX470. I managed to loosen a few and not those surrounding the GPU. All are very difficult to loosen using all y available screw driver tips. Did you manage to have the screw taken out?

I was asking before I even tried to take my coolers off of my cards because I've read a lot about people having difficulties..
 
Some of the screws were in there real good, but I didn't have any problems taking all the screws out of both cards with the pointy PH-1 head.  The PH-1 head that has the rounded tip would not grip the screw firmly so I didn't even try to use it.
 
For every screw, I had a heat gun in one hand, the card on a flat hard surface, and I stood over it and put firm straight-down pressure on every screw.   There were a few screws that were threadlocked in place and put up a fight, so I took the heatgun to them and I'm not sure if that helped or not, but I got them out by using a bit more downward pressure and elbow muscle, along with the heatgun.
 
Had a sore elbow by the time I was done with both cards, but didn't have any problems.  Just go slow and if the screwdriver starts to slip in the screw, stop and put more downward pressure on it. Watch the screws carefully to make sure they're spinning and you're not just stripping them.
 
But boy does it feel good to do something that most people mess up (take a google search and see how many people ruined their screws and had to drill them out).
 
I also used the heatgun to warm up the heatsink a bit and it practically came off by itself when all the screws were out. 

Good luck!!
 
  Edit: BTW, Heat gun = High Wattage Hair Dryer
  Edit #2: Almost forgot... Make sure you use a screwdriver that has a handle that fits in your palm (ie: Not the Philips "precision" screwdriver set with the narrow handles) . Otherwise the screwdriver will be slipping in your hand. 
 
I think that pretty much covers all the tips/advice I've ever heard for taking the screws out of these cards..