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# [Official] AMD R9 290X / 290 Owners Club - Page 1290

Quote:
Originally Posted by Slomo4shOÂ

Nevertheless, the temperature deltas between the block and water, water and radiator, and radiator and air also play a crucial role in heat transfer where larger temperature deltas between the two mediums increased the rate of heat transfer from the hotter medium to the cooler medium via conductive heat transfer.

Fourier's equation of conductive heat transfer is q = k A Î”T / s.
q= heat transfer
k= thermal conductivity
A= surface area
Î”T= temperature difference
s = material thickness

Since k, A,and s are static in a closed loop then one can infer that Î”T has the largest impact on heat transfer. Considering that any given molecule of water will spend the same amount of time within a specific cross-section of a loop over time, I am unsure how relevant flow rate would be in a closed loop if the flow is turbulent throughout and a water wetter is used.
You mean like every other all-in-one system?
Warning: Spoiler! (Click to show)

Is the equation you posted above saying that too much flow in computer system will give negative results? If no, that Is what I said in my original statement. You posted a part where I was trying to imply where it would not be detrimental to a computer cooling system as it would be in an automobile.

As for the aluminum radiators, you got me. I guess the all in ones use the correct coolant as used in automobiles applications that have mixed metals.

I'm actually leaving right now that's why I didn't have time to really read the equation you posted but it all seems like common sense to the most part in general. I will have to read up on how water wetter helps though as I've never bother to read up on how or if it works.

The whole point of my original post was to say that too much flow isn't bad. It seems that you agree too.
Edited by esqueue - 1/2/14 at 9:24am

### Gear mentioned in this thread:

Not sure if it was posted yet but new beta AB was released today.

Quote:
Originally Posted by TennobanzaiÂ

Not sure if it was posted yet but new beta AB was released today.

lol i literally posted that last page, but the more the merrier!

On another note: this is supposed to help with the visual fluctuations people see on their GPU's in AB.

It's purely visual from what I gather in the way AMD handles it, and it doesn't affect performance. There is also an option to display things the way GPU-Z does, which is apparently wrong but looks smoother, if the visual fluctuations still bother ya.
Edited by the9quad - 1/2/14 at 10:05am
Quote:
Originally Posted by DaveleafÂ

I am using Swiftech MCW 80,

some enzotech ramsinks, onlyhad 8 so ordered more, and a piece or copper stock on the vrm with electrical tape.

I ordered another 2 boxes enzotech ramsink, and vrm sinks, and some seisuki thermal tape.

This is my 3rd vid card on this block, and since I go through new vid cards every 6 months, this had saved me alot on custom blocks.

Damn why didnt i think of this, putting a straight up copper bar w/ duct tape - can you buy copper bars at hardware stores maybe? Or maybe frozencpu/performance-pc?
Quote:
Originally Posted by esqueueÂ

[/SPOILER]

Is the equation you posted above saying that too much flow in computer system will give negative results? If no, that Is what I said in my original statement. You posted a part where I was trying to imply where it would not be detrimental to a computer cooling system as it would be in an automobile.

As for the aluminum radiators, you got me. I guess the all in ones use the correct coolant as used in automobiles applications that have mixed metals.

I'm actually leaving right now that's why I didn't have time to really read the equation you posted but it all seems like common sense to the most part in general. I will have to read up on how water wetter helps though as I've never bother to read up on how or if it works.

The whole point of my original post was to say that too much flow isn't bad. It seems that you agree too.

In a computer theres negative and positive air pressure. Normally having more fans will not allow for a proper set up depending on the case. The way it works best at least for everything ive done is there should be more fans exhausting air out of the case there are in the case. This will normally allow for air transfer to be more seemless in the case with less vacuum locations thus letting heat escape as quick as possible. My set up in the cosmos 2 that I have is 1 front (intake) 1 back (exhaust) 2 side (intake) and 3 top (exhaust) this have provided me with best results so far. Now with a water cooler ive always experienced it cool better to take out side air ( not in case ) as this will be ambient air temps cooling the rad.
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Quote:
Originally Posted by jerroldsÂ

Damn why didnt i think of this, putting a straight up copper bar w/ duct tape - can you buy copper bars at hardware stores maybe? Or maybe frozencpu/performance-pc?

I got it from a local metal distributor. I called two places, a metal shop wanted 25 dollars, at the distributor it was 8 dollar for a 12" bar 1/4" x1 1/4"

So I dremelled a piece of for temp use, but however I found it great platform pieces for this final heatsink layout.

Quote:
Originally Posted by DaveleafÂ

I got it from a local metal distributor. I called two places, a metal shop wanted 25 dollars, at the distributor it was 8 dollar for a 12" bar 1/4" x1 1/4"

So I dremelled a piece of for temp use, but however I found it great platform pieces for this final heatsink layout.

Nice - i dont have a dremel - can you tell me the final dimensions of that piece? Im tempted to call around and see what i can get. That long strip of VRM1 get stupid hot for me even tho the core is < 65C @1200mhz.

I suppose i can measure it out, but that would require me to reseat the HSF again
Quote:
Originally Posted by prostreetcamaroÂ

You guys got it all wrong. Coming from the high performance automotive world I know this for a fact. It can be a real pain to get a cooling setup perform well on a high horsepower highly modified car. Many things go into it but slowing down the flow so that it stays in the radiator longer to cool off more is the worst thing you can do. While it stays in the radiator longer what does the water do that is in the engine or in this example the water blocks? It stays there longer and heats up higher before it leaves the water blocks. You want high flow so it can get in and out of everything quickly.

Didn't you read what I said? Go ahead read it again, I said "but if its too slow the liquid would stay too long in the block". I did not say to go fully slow on the flow rate, that would have a negative effect as well you just need to find the right balance on your flow rate.
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Acer 23" LCD Screen iRock backlit keyboard Seasonic X750 Corsair 500R (Modded)
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A4 X7 Sony 50Watts 2.0 channel speaker + Sony Bluetoo...
Quote:
Originally Posted by SazzÂ

Didn't you read what I said? Go ahead read it again, I said "but if its too slow the liquid would stay too long in the block". I did not say to go fully slow on the flow rate, that would have a negative effect as well you just need to find the right balance on your flow rate.

Yeah i read over it too quickly. It would be very easy for me to see the difference. My D5 is a variable so I can turn it up and down. I might play around with it when i get back from my cruise. Right now it is running at max speed.
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