this is a guide on how to install the gtx 275 backplate on the evga gtx 260 core 216 55nm version and it also works for the gtx 275.
it also helps you to check if your gtx 260 is compatible with this backplate.
it may also work with other card (non evga card maybe) but you just can check on the back of you video card to see if the holes match the holes on the backplate.
 
EDIT: look at the temps on the bottom since there is a pro on temp but also a con.
 
ok first of all you need to check you gtx 260 core 216 55nm is a 1.0 revision (REV: 1.0). you will check this on the fron side of the PCB:
 

 
here is the box i received from EVGA:
 

 
pretty big box for just a backplate right?? it's ok to have good packages for our products, thanks EVGA!
the backplate was on top of all that foam. why would it be on top with all that foam on the bottom? why don't just put the backplate in the middle?
anyways the backplate was intact and it didn't ahve any bents or something.
 
 
because there was too much foam i thoguht they knew i was a good customer so they've send me a gtx 470 or a gtx 480.
so i decided to check by removing all the foam
 

 
ok so here is the card ready for the backplate installation:
 

 
and here is the backplate so you can check if all the holes are aligned (PCB to backplate holes):
 

 
you can see all the holes are aligned beause this is a gtx 260 core 216 55nm with a 1.0 revision. so if you have a 1.0 revision you can go ahead and but this backplate which will fit perfectly.
 
then you will remove the original screws that came with the card:
 

 
after that you will remove the labels on the GPU thermal pad so it will make contact with the back of the GPU on the PCb and the backplate:
 

 
after that you will put the backplate on the back of the card and align all the holes on it with the holes on the back of the card and the screwn in the screws that came with the backplate.
DO NOT use the original screws. that's why the backplate comes with 14 screws (13 the card needs and 1 extra screw) so they will work with the backplate and they also look better. 
obviously you will want to screw the screws in x pattern so you will not bend the PCB or damage the 
GPU while screwing them. so first put the 4 middle screws (the GPU screws) half way and then put the other screws half way.
 then screw your 4 GPU screws all the way (x pattern again) and then finish screwing all the other screws in x patter if possible.
ok so her is pictures of the backplate installed.
it really looks good!!! i love it now
 

 
 

 
 

 
 
thanks for looking at this guide and you will be getting a good accesorie for your card.
 
if it does works on your card i suggest you buy it since it will drops temps by about 5-7 celcius (it did dropped temps 5-7c for me)
 
bedore backplate:
idle: 46-48c fan @ stock (45%)
load: 65c fan @ 75%
 
after backplate installation:
idle: 41c fan @ stock (45%) when the computer is turned on and there is not much heat. look below for more info on this.
load: 60-61c fan @ 75%
 
ok after testing some games and some idle temps i came to a temp conclusion:
 
after you have played some games and the card has been idle (internet, chat, videos) 1 or more hours you will get
temps from 46c to  50c when idle.
so after looking closely i cam to the conclusion that you get higher idle temps but you will get lower load temps.
idle: 46-50c fan @ stock (45%)
load: 60-61c fan @ 75%
i guess it's because the backplate gets hot and you don't get too much air flow on top of the video card.
i have 2 120mm intake fans which give cool air to the hard drive a little bit and then the bottom fan gives air to the fan at the video card and the top fan gives air to the top of the video card, motherboard and cpu cooler.
but my top intake 120mm fan has less airflow than the bottom 120mm intake fan.
just to check this higher idle temp i will sawp front intake fans to check if i get lower temps.
 
pros:
lower load temps
better looking
installation is easy
 
cons:
little bit of higer idle temps ( i will check by swaping front intake fans)
not compatible with all gtx 260's
 
thanks for looking and if you need help just post and i will be glad to help you.
 

Same here !

Esp as 1 of the GTX 285 F.T.W's came with Backplate as standard.
 
 
http://www.evga.com/products/pdf/01G-P3-1182.pdf   (Older version was 720 Core instead of 702 Core and had no Backplate) !
 
 
http://www.amazon.com/gp/product/images/B00275G0TG/ref=dp_otherviews_z_2?ie=UTF8&s=electronics&img=2

ok i swaped fron intake 120mm fans from their original position. now i have lower temps idle and almosr same temps load. which inf act are lower temps than before i had the backplate.
final conclusion:
GET THAT BACKPLATE IF YOU CAN AND IT'S COMPATIBLE WITH UR GTX 260!!!
lower temps and it looks better!

he is such a noob now XD.. i gave him the money to buy it

i have one question to the backplate owners.
do you guys think i'll get lower temps if i remove the thermal pad behind the GPU on the PCB??
i will try it. maybe tomorrow but im going to colombia sunday and i won't be back until september so i won't be able to tell the difference (playing, testing benchmarks and all that (i'll have to starting packing my backs and all that)
so will i notice a difference?? lower or higher temps??
has anyone tried this??
i will try it before i got if i can..but i will definately try it after my vacations if i can't tomorrow.
thanks

Thank you!

I bought two of these for my GTX 275 Superclock cards.  I hate to say it, but it took me a little while to figure out where to place the thermal pad.  lol! This is an excellent guide with some very helpful pictures. 

P.S.  I finally figured out that I needed to place the pad on top of and not behind the GPU.

Thanks again!

ok so i just got the backplate and installed it today but the thing is i've only owned the card for like a week so im not sure what a normal temp is... i didnt measure/record the temps @ idle or load before installing the backplate and now im getting 78C in UT3 Black Edition with all setting on MAX except the AA on 4x. that seems high compared to what you're saying here... any ideas? i do have a fan blowing over and under the GPU and that seems strange that it would be so high but my HP case has only one exhaust besides the PSU and no intakes... POOR airflow may be the culprit... would you suggest removing the backplate and recording temps under the same conditions for comparison?

Death_Masta187

does this add any thickness to the card? I only ask because I have 2 GTX275s and its a tight fit as it is. I want to make sure if I bought 2 of these that the bottom card would still fit.

It's like 1mm thick.