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Reference GTX 670 water blocks are going to be hillarious - Page 19

post #181 of 234
Quote:
Originally Posted by Skoobs View Post

I am not sure if that variation in size would actually effect the way heat moves to the main part of the card... i dont think heat transfer is "bottlenecked" like, say, water or something.

I'm not sure what it is your saying, but heat like electricity conducts through mass. If you just have a mass of cooper cooling the VRMs, eventually the copper mass cooling them will saturate with heat, and require some form of cooling to remove the excess heat, be it with air or water. Since there won't be any fans blowing on the VRMs, that section of the block will need to transfer it's heat to the rest of the block where it can be removed by the water. By having such a large mass of copper, connected by two small bridges of copper, it will in effect reduce the effective heat exchange rate between the VRM section and the rest of the block. This is basic high school physics.

In a nutshell what I am saying is, that yes the cut out for the chokes (reduced mass) between the VRMs and the rest of the block will ABSOLUTELY effect the way heat transfers from the VRMs to the rest of the block, by significantly reducing the rate at which the heat can transfer. The larger the hole, and the less mass connecting the VRM section to rest of the block, the lower the heat transfer rate will be.
Edited by Fatt - 7/24/12 at 10:11pm
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post #182 of 234
Will not having a backplate effect the performance at all? The water blocks are finally in stock but I can't decide between the aqua computer or the heatkiller. I love the AC block but It doesn't have a backplate. Will the Heatkiller backplate fit?
post #183 of 234
Unless the back plate makes contact with the RAM on the rear of the card, which I highly doubt any of these do, the back plate is purely for aesthetics. On longer cards the back plate can help add rigidity, but with the 670s being so short this is a non-issue. If you only care about performance, a back plate will do nothing for you.

I will say though, if your going to order a AC block, DO NOT order it directly from them. They will only ship with DHL, and DHL is known to lose packages. Mine was lost in Germany for three weeks, and another member on these forums has yet to receive his $1200 order for well over a month, and his package is still "lost". Either wait for them to come in stock stateside, or order from Aquatuning and choose UPS for shipment. If you are in EU AquaComputer may have other shipping options, just avoid DHL like the plague!


EDIT: On that note, my AC blocks finally came in today! They are absolutely gorgeous! Won't have a chance to install them until tomorrow night though.
Edited by Fatt - 7/25/12 at 9:32pm
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post #184 of 234
I actually just order it from PPCs. They have the AC and heat killer blocks in stock now! They also have the ek. I went ahead and order the heat killer back plate as well. Hopefully it fits the AC block. If not then I will just save it as I will be building another PC soon with the heat killer block
post #185 of 234
Quote:
Originally Posted by Fatt View Post

This is basic high school physics.

Dont talk down to me, I am a physics major. I am just saying I dont think it will matter. its not like it is getting red hot. how much heat do you think is going to be produced on the vregs, which will then have to come to equilibrium with the other side of the card by way of those "tiny" copper pieces? a couple watts?
Edited by Skoobs - 7/27/12 at 1:10pm
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post #186 of 234
I had the Heatkiller waterblock+backplate installed for a week now - More than satisfied. Temps are great and installation was easy smile.gif
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post #187 of 234


would really like to know 1) how much room there is behind those round holes, and 2) how hot it gets back there.

I want to light those holes up.
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post #188 of 234
Quote:
Originally Posted by Skoobs View Post

Dont talk down to me, I am a physics major.

You'll have to forgive me, but from your statements I highly doubt that...


EDIT: Also if you think VRMs only dump a few watts of heat, your sadly mistaken. VRMs dump a significant amount of heat; while not terribly inefficient they are no where near 100% efficient. So yes it is important to be able to remove the heat at a decent rate. While I'm sure the XSPC block will work decently well with these low power cards, to imply they would cool similarly to an actively cooled VRM block, is just plain ignorant. Even if your a first year physics student, the first thing you should learn is that physics is not intuitive. If you want to argue your point, offer facts not commonsensical pseudo-observations.
Edited by Fatt - 7/27/12 at 4:58pm
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post #189 of 234
I got my AC waterblock today and it fits with the Heatkiller backplate fine. However, I do have a question. I have the GTX 670 SC 4gb. I installed everything but it runs at 75C constant full load compared to on air when it was running 63C constant on full load. Did I install the block wrong? the car on idle though runs at 30c. I put a BB size thermal paste on the GPU then I put thermal tape on the vram and etc on the card. However, I notice the 4gb has it on the back as well but I didnt put any thermal tape on the back cause there wasnt enough provided with the AC heatblock due to it being made for the 2gb. Will this be fine?
Edited by ivoryg37 - 7/28/12 at 3:44pm
post #190 of 234
Quote:
Originally Posted by ivoryg37 View Post

then I put thermal tape on the vram
...which is wrong! You must apply thermal paste on the GPU and RAM. With thermal pads on the RAM the GPU will not make proper contact to the block since it will push away this area from the card. Please check the manual that came with the block. There is also a photo indicating where to apply thermal paste and pads.
Edited by Shoggy - 7/28/12 at 3:58pm
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