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  Topic Review (Newest First)
04-26-2009 11:19 AM
xJumper Ok so I finished making the mount and I added a PVC pipe into the base to act as a funnel/reservoir for dice and acetone.

People have been telling me that center poles give you better load temp, I did a little research and it seems to be because when the processor heats up there is just not enough surface area on a normal thin base and a center pole should improve load temps. You guys told me I should ad copper bb's which would act like a center pole and improve load temps, I was going to do that but then I thought of something else.

Can I just ad one of these in the middle of the base to act as a center pole.




Seems that it would do very close if not as good as a true center pole and would help improve load temps.
04-22-2009 11:38 PM
PR1M3R Thanks Bartx
04-22-2009 10:58 PM
bartx
Quote:
Originally Posted by xJumper View Post
How does a thick base give better temps? I thought that the less material that interferes with the heat transfer the better. People that remove the IHS on there processors have less material in between the cooler and the actual CPU and this improves temps.
I'll give you example - E6420 @ 4.57GHz, 1,8V
- on simple pot with 12 mm thick, flat base - idle -70C, full load -60C (dice)
- on this pot https://www.overclock.net/dry-ice-liq...ml#post5097345 (with center pole) - idle -67C, full load -65C

Thinner base gives better temps, but it's useless, because it doesn't hold load properly (3d mark 2006, wprime 1024m, pcmark 2005 especially). In PCMark 2005 max clock rose from 4.3GHz to 4.57GHz (this cpu has terrible fsb wall).
04-22-2009 08:50 PM
PR1M3R
Quote:
Originally Posted by xJumper View Post
How does a thick base give better temps? I thought that the less material that interferes with the heat transfer the better. People that remove the IHS on there processors have less material in between the cooler and the actual CPU and this improves temps.


Honestly, I can't tell you why. I am not a pro DICE'r by any means. But that is the reason why people make these pots with a huge amount of copper around the base. Hopefully someoen can explain exactly why, because I would also like to know.

Bartx........
04-22-2009 04:30 PM
redsunx I thought I was gonna see a grow room lol.
04-22-2009 04:28 PM
xJumper
Quote:
Originally Posted by NCspecV81 View Post
it would have to be pure and the more you keep it in open atmosphere the less pure it becomes since it pulls water from the air. I would just use acetone, as it's not as strong as rubbing alcohol. At least to me that is.

What do you mean "Not as strong"? and "it pulls water from the air"?

Do you mean that rubbing alcohol attracts more water/faster than acetone?
04-22-2009 02:16 PM
NCspecV81
Quote:
Originally Posted by xJumper View Post
How does a thick base give better temps? I thought that the less material that interferes with the heat transfer the better. People that remove the IHS on there processors have less material in between the cooler and the actual CPU and this improves temps.



But Rubbing Alcohol (Ethanol Kind) has a lower freezing point (@ -114) than acetone(@ -94) and does not turn to goop like Isopropyl alcohol (@ -89).


* (@ = Freezing Point)

it would have to be pure and the more you keep it in open atmosphere the less pure it becomes since it pulls water from the air. I would just use acetone, as it's not as strong as rubbing alcohol. At least to me that is.
04-22-2009 01:52 PM
xToaDx
Quote:
Originally Posted by PR1M3R View Post
Well, for the base, it needs thickness for a couple reasons. 1) to keep from bowing and "pulling up" as G|F.E.A.D|Killa said. 2) The more mass you have there the better your temps will be.
Quote:
Originally Posted by xJumper View Post
How does a thick base give better temps?
04-22-2009 01:48 PM
xJumper How does a thick base give better temps? I thought that the less material that interferes with the heat transfer the better. People that remove the IHS on there processors have less material in between the cooler and the actual CPU and this improves temps.

Quote:
Originally Posted by NCspecV81 View Post
I wouldn't use alcohol as a transfer liquid.
But Rubbing Alcohol (Ethanol Kind) has a lower freezing point (@ -114) than acetone(@ -94) and does not turn to goop like Isopropyl alcohol (@ -89).


* (@ = Freezing Point)
04-21-2009 07:41 PM
coolwhip
Quote:
Originally Posted by PR1M3R View Post
Well, for the base, it needs thickness for a couple reasons. 1) to keep from bowing and "pulling up" as G|F.E.A.D|Killa said. 2) The more mass you have there the better your temps will be.

So, a good suggestion that worked well for someone here was to put a small handfull of BB's (12" at bottom of pot) and solder them in with a bunch of solder.

And as for a funnel pipe, I just use the top of a gatorade bottle
But I have also seen people make them from sheetmetal, or wide mouth metal funnel slightly modded.
^^ correct
i used bb's in my pot didnt solder them but tht would prolly h elp even more. it brought my temps down about 10 degrees if i remember correctly. i would definately recomend throwing some in if you have a thin base
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