Found some AWSOME cooling mods for 6850/6870's

[celcoid]

Here you guys go enjoy Im thinking of trying this
http://www.overclock.net/t/1203151/my-hd-6870-super-modding-log-59c-max
If you go to the 2nd page there are some other mods from other people

This is a more ridiculous mod Antec Kuhler 620's on HD 6850's OC'ed to 1ghz!!!!!
http://www.overclock.net/t/1201484/need-help-in-choosing-an-aftermarket-cooler-for-my-ati-hd6870#post_16216306

[jake262144]

That's a very good find.
Come summer, this might be the way for me to go. My mining capacity has grown since last summer and even then keeping temperatures in check was a real pain.

I'd like to point out, however, that the VRMs will fry if the Antec mod isn't supported with a decent fan.
Underclocked memory shouldn't pose a problem but the VRMs do require some special care.

[Isepick]

Silly question, but isn't the same amount of heat dissipated into the room with this mod? If you have a card cranking away at 150 watts what is the difference if that heat comes out of a radiator a few inches away? How useful is this if you have 20 cards hashing away in a room? I live in the deep south and I am trying to get my heat situation under control before the summer rolls back around.

[MrGaSp]

I guess because it'd take a bit more heat in the room before the cards would reach the same temps...because of the better cooling, even though the room is hot, the cards are that much cooler. 

Personally, i'd go with air, simple, and good enough for me.

[CoinSpeculator]

Cards generally work more efficiently at lower temperatures, but my guess is the difference is negligible unless you are running much closer to their limits (~100C).  The water cooler also allows you to easily run a radiator outside.

[jake262144]

Silly question, but isn't the same amount of heat dissipated into the room with this mod? If you have a card cranking away at 150 watts what is the difference if that heat comes out of a radiator a few inches away? How useful is this if you have 20 cards hashing away in a room? I live in the deep south and I am trying to get my heat situation under control before the summer rolls back around.

Naturally, all that heat is still being dissipated into the room.
The difference is, with this mod you are able to dissipate greater amounts of heat much faster, thus keeping the cards at lower temperatures. With lower GPU core temps, you might be able to overclock the cards harder.
If you have 20 cards in a single room you better make sure your house AC is in tip-top condition before summer comes.

The water cooler also allows you to easily run a radiator outside.

Not those tiny ready-made CPU coolers. Those pumps are pathetically weak, just strong enough for a single radiator and two short hoses.
You could successfully build a decent WC-rig and mount the radiator outside but that's an expensive approach to cooling.