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The BIXIII would allow for a larger total volume of h20 in your loop as well as more surface area than a BIXII. Those two things in conjunction would yield slightly lower temps over that of the BIXII.
For a CPU, AND 2 7800 512 GTX's you would NEED alteast a BIX3
voigts said:The slightly more amount of water won't cool one bit better. Water doesn't cool (phase change aside). Water only acts as a carrier to transfer heat from one location to another, namely from the watercooling blocks, etc. to outside air via a rad of some sort. It will only VERY slightly delay the amount of time takes for the water temp to stabilize. That having been said, a BIXII will cool that fine provided you use some 80+cfm fans or so. A BIXIII can cool better because of the increased surface area, and can allow you to use slower fans or undervolt a bit and get good results. And if you really like quiet and can fit it, go with a BIPIII and some slow fans.
Let's not forget folks that it is not just all about rads, it is also about how we dissipate that heat into the air which for most of us is also about airflow.
Not to split hairs with you, but given the specific heat of water any increase in it volume will give it a larger capacity to carry heat
Alchemy1 said:Ok, then let me ask a question since I have two people opposing my thought process. I am a Biologist by education (bacteriologist) and chemistry is not my strong suit, but I do know some. the equation to calculate specific heat goes as follows:
quantity of heat transfered
Specific heat= Quantity of heat transfered / (grams of substance...aka h20)*(temperature change)
So just as an example let's say we have the following scenario....
Specific heat=1000 J / 100 * 1.00 K= 10 J g-1K-1
Now let's increase the amount of water keeping all other variables constant....
Specific heat =1000 J / 150 * 1.0 K= 6.667 J g-1K-1
Scenario 1 has less less water and a higher specific heat value and scenario 2 has more water and a lower specific heat. Doesn't that meant that the more water you have the more energy (heat) you need to put into the system to raise the temperature to the same level as the one with less water?
Also, Calorimetry is done in a closed system so why would this application be any different?
Actually, you probably could. I'm pretty sure some people have used buckets with Via 1300/1800s before in budget setups.billb said:So then I can't put a 55 gal drum of water in my loop and get rid of the rad and fans? Aw, shucks! Shot down by the laws of thermodynamics...again.