H2O VGA but what about RAM???
I know the RAM on video cards gets fairly hot and I am thinking about going H2O for CPU, NB and VGA in a little while but am concerned about the RAM on the vid card. I am planning on doing some serious O/C on a 9800 Pro and would like some input for keeping the memory cool while cooling the core with water.
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however...i would just buy some heatsinks....like the zalman northbridge cooler...then modify them to fit the ram chips...im sure u can squeeze two ram chip heatsinks out of that one bad boy...then just use the epoxy that comes with it to seal the deal...thats what i would do if u wanted to extreme overclock
That is a great idea and I did think of it a few times whike reading Leo's exploits. But I want to go water for certain as I intend to keep overclocking and when it gets hot I have to back off. like right now my A/C is on the fritz and it is 93F inside the house (this is September). Passive wouldn't get me very far in this environment. I am definitely going to go H2O on the CPU, NB and VGA core but I am just wondering about the memory on my video card. I am also going chilled water with a full sized refrigerater in the next room.
Overclock like mad.
Ram on video cards doesn't actually get that hot (Which is why they often don't sink them). Copper sinks from a vendor would work well. As for 93*F, be lucky it's only 93*F. I ran a computer the entire summer in a 101*F room, overclocked 700MHz. That was quite a rush.
All on air cooling too.
As for vaccuum sealing the bag, bad idea. It isn't a true vaccuum seal and there still will be moisture, as well as no method to expell heat from the plastic. Plastic is one of the worst insulation methods. Bad bad bad idea.
Here's an idea... why not pelt everything? protecting it from condensation may be a hell of a job, but I've been thinking about it lately... My idea involvs something like this:
<ul>
<li>8x Melcor CP 1.0-31-05L (or equivalent) peltier elements for bga video RAM (1 per RAM chip)
<ul>
<li>15x15x3.2mm
<li>3.75V/3.9A/8.2W
<li>67*C Delta T max.
</ul>
<li>2x Melcor UT15-12-40-F2 or (equivalent) peltier element for GPU (1 chipset, 1 GPU)
<ul>
<li>40x44x2.8mm
<li>14.4V/14.6A/126W
<li>69*C Delta T max.
</ul>
<li>1x DangerDen 226w Pelt (CPU)
<ul>
<li>Size = 50mm X 50mm X 3.10mm
<li>15.2V/24A/226.1W
<li>67*C Delta T max
</ul>
</ul>
Total power dissipation: 902.8w max, not including component heat output.
How would you go about cooling that?
Well, for starters, how about making your own water blocks? You could take say, an Alpha PAL8045 (which would be perfect, since it's anodized...) heatsink and solder/weld/braze a shroud around it, and turn it into a water block. You could do the same thing with something smaller for the northbridge, and build a custom thing (or adapt something) for the video card... Instead of using one of the dinky pumps most people use, get an Iwaki-Walchem WMD-100RLT (35GPM), and run separate circuits for each component... Use a small aluminum car radiator and some Comair-Rotron 172mm fans, and you'll be set. I'd imagine everything would run well below freezing, and you'd have a (very effective) space heater as well...
Thanks! I will probably start looking around for some nice ramsinks then. When I go water I will also end up epoxying my Zallman NB HS to my SB.
What do you think about the full size fridge idea. I was considering 3/4" copper tubing coiled in the bottom of the fridge turned down all the way with the only other use being beer storage.
If you have a bunch of retail cpu heatsinks and a Dremel etc, you can easily make them yourself. However, before you will need sinks on the card, you will have artifacts, and therefore need to do the vmem mod. So what i mean is, if you dont intend to do the vmem, you dont need the sinks.
First I am planning on using a full size fridge like your mom has in the kitchen that everyone keeps opening the door and blah blah blah. Well I don't plan on opening the door near as much, putting in warm pop or beer to "get cold" or put things in the freezer as if it were in a "Normal" situation thus reducing the load put on it in one respect while increasing the load in a constant manner and maintaining a lot of its thermal efficiency.
//edit
btw..i wasnt telling you to fdo eveything passive...i was telling you to JUST do the ram heatsinks as passive...just get bigger heatsinks for it then epoxy it....i think thewre was a bit of a misunderstanding..that u should buy heatsinks simply for the ram...and nothing more
///edit
found the link
http://wastedbandwidth.org/phatbarn/
I was kidding.
Sorry, I thought that was blindingly obvious.
http://bit-tech.net/feature/23/
It does look great tho...
I love that idea! It even looked real cool. Too bad Geeky beat me to the best part though.
Sorry i missed your post in all this. I will probably do the mod after I have the card a little while, which will coincide well with my timing on going to water. I'm just trying not to leave anything to chance.
WuGgaRoO
This guy as well as all the others I have seen do this kind of thing used small refridgeraters around the 6cu.ft. size and I have a 21.5cu.ft. comercial grade with a larger than normal for size compressor. The small ones just don't have enough power to do it compared to a large one. It usually takes a small fridge 3 times as long to get a six pack cold compared to a full size. Another thing I noticed this guy did was to put the pump in the fridge and pumps produce a bit of heat themselves.
This is the fridge I am thinking of using. It is 6 1/2 ft high and 32" wide.