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STASIS IceStorm NV7800 Series 2.0

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consumer9000

Former STASIS Guy
Joined
Oct 26, 2004
Location
Bay Area, CA
Just an update on the incremental improvements to the IceStorm NV7800 VGA Coolers...

The most noticable changes are the shrouds, which are now beautifully Hard Anodized in a Matte Black and Cobalt Blue finish. They have grown slightly to further cover the power regulation circuitry.

Other tweaks include improvements to the shroud mounting arrangement to reduce the likelihood of damage in transit and the use of super sticky Seksui thermal tape on the machined ramsinks to ensure proper adhesion. For convienience, the screws used to mount the fan have been replaced with Phillips head parts (previous hex head units required .50 standard Allen wrenches).

Here's a shot of a unit in the new Cobalt Blue color:
 

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consumer9000

Former STASIS Guy
Joined
Oct 26, 2004
Location
Bay Area, CA
Looking downright stealthy in the new hard anodized Black... :D
 

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consumer9000

Former STASIS Guy
Joined
Oct 26, 2004
Location
Bay Area, CA
After being precision surface ground to within .0001" and then hand lapped down to 5 microns I am confident that these are the flattest, best finished heatsinks you can buy.
 

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consumer9000

Former STASIS Guy
Joined
Oct 26, 2004
Location
Bay Area, CA
Just because you can...
(80x38mm Delta >100CFM "Screaming Banshee")
 

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consumer9000

Former STASIS Guy
Joined
Oct 26, 2004
Location
Bay Area, CA
And just for fun... :cool:
(Evercool 80x25mm Tri-LED Fan ~35CFM)
 

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consumer9000

Former STASIS Guy
Joined
Oct 26, 2004
Location
Bay Area, CA
Careface said:
hand lapped to 5microns? how the **** did you do that? :| nice lookin' cobalt blue though :cool: looking forward to seeing some results.

To get it that flat, you have to first calibrate the heatsink in a precision vice setup on a piece of calibrated precision granite. Once seated, you cannot deviate from this fixture setup until complete to ensure consistency.
Then, with a surface grinder you take .001" at a time until the surface has been uniformly ground. A finish pass of .0005" or so will do. :eek:
After this, you take it to a calibrated lapping table and go to work. I usually start with 800 grit (wet with kerosene), 1200 grit, 2000 grit, and then finish it up with 2500 grit (with diamond lapping dust). Anything beyond this yields negligible gains given the already very high cost of this procedure... :-/

As for results, they are on par with the Series 1.0 units, aside from slightly lower board ambient temperatures. Expect between 30-40C Idle and 45-55C Load based on your ambient temps and fan settings. :)
 

Rattle

Member
Joined
May 12, 2005
Location
Home... again
consumer9000 said:
To get it that flat, you have to first calibrate the heatsink in a precision vice setup on a piece of calibrated precision granite. Once seated, you cannot deviate from this fixture setup until complete to ensure consistency.
Then, with a surface grinder you take .001" at a time until the surface has been uniformly ground. A finish pass of .0005" or so will do. :eek:
After this, you take it to a calibrated lapping table and go to work. I usually start with 800 grit (wet with kerosene), 1200 grit, 2000 grit, and then finish it up with 2500 grit (with diamond lapping dust). Anything beyond this yields negligible gains given the already very high cost of this procedure... :-/

As for results, they are on par with the Series 1.0 units, aside from slightly lower board ambient temperatures. Expect between 30-40C Idle and 45-55C Load based on your ambient temps and fan settings. :)


so basically the changes have been made to the shroud which is increasing flow ?

can I swap out my shroud lol
 

fordsierra4x4

Member
Joined
Jan 30, 2005
Location
Hove, Sussex, UK
This isn't on topic - but knowing my luck i'll never get another chance to ask - the 6600GT cooler you do - a) do you still make them b) do you have any in stock c) will you still have them in Jan/Feb time and d) i dont suppose you want to donate one to a poor starving student do you? :D

BTW - nice finish on the 7800 heatsink....
 

ludeboy12

Member
Joined
Mar 24, 2005
Location
Wheeling, WV
how much are these things again.....i def want that blue one....

its soo sexy...and it would help my card which is heatin up a lil too much for my likeing
 

LegolasElf

Member
Joined
Jul 29, 2005
Location
Kenner, LA
Hye guys i have the exact same HS and my fan just died. Im having trouble removing the fan becuase its stuck on there with allen wrench bolts. The smallest i have is 5/64 but the ones for the fan are even samller. Does anyone know the size of the ones for this HS?