Informal test results CPU 350 vs Apogee GTZ

[santiagodraco]

It has been a bit entertaining and frankly I'm probably pushing too hard. I tend to get overly passionate about things like this and I should probably back off a bit

So, in the interest of fairness and all that, I have a suggestion that I think might resolve the issue and make Gabe's tests more valid.

I suggest that the tests be conducted like this. First, take the GTZ block and install and test as Gabe mentioned. The key here is to find the BEST temperature possible with the same load and same water temperature by only varying the water flow. In other words change the water flow over time, pausing at various steps and observing the resulting temperature, until you find the absolute lowest you can get.

Next repeat the test for the CPU-350. Keep all test conditions the same except vary the flow rate until you obtain the absolute lowest temperature for the Koolance block.

If the theory is right you might have a best low temp for each block at varying speeds/flow for the pump. If true it might indicate that each blocks "sweet spot" is different, so choosing one over the other may depend on the type of pump, or flow rate, you plan on using.

Of course we may see that one block is always lower across all flow rates. If true then great, we have a king. But I think it's too early to tell that.

Sound reasonable?

[brewer265]

It has been a bit entertaining and frankly I'm probably pushing too hard. I tend to get overly passionate about things like this and I should probably back off a bit

So, in the interest of fairness and all that, I have a suggestion that I think might resolve the issue and make Gabe's tests more valid.

I suggest that the tests be conducted like this. First, take the GTZ block and install and test as Gabe mentioned. The key here is to find the BEST temperature possible with the same load and same water temperature by only varying the water flow. In other words change the water flow over time, pausing at various steps and observing the resulting temperature, until you find the absolute lowest you can get.

Next repeat the test for the CPU-350. Keep all test conditions the same except vary the flow rate until you obtain the absolute lowest temperature for the Koolance block.

If the theory is right you might have a best low temp for each block at varying speeds/flow for the pump. If true it might indicate that each blocks "sweet spot" is different, so choosing one over the other may depend on the type of pump, or flow rate, you plan on using.

Of course we may see that one block is always lower across all flow rates. If true then great, we have a king. But I think it's too early to tell that.

Sound reasonable?

So you are saying they should change all the test until your favorite comes out on top?

[santiagodraco]

So you are saying they should change all the test until your favorite comes out on top?

Not at all. I'd like to know beyond a doubt which one is best under which conditions. That is what people here don't seem to grasp.

Under the single set of conditions set by Gabe the GTZ performed better by 1.5c.

How might the two blocks perform if the pump flow rate was increased by 50% on the same exact setup? The fact that those tests were not performed, and especially knowing that one block is designed in a specific fashion as to require high pump flow, I call bs on this test as meaningful overall.

Submit the same tests under varying flow rates and I'll say good job and thanks for the unbiased test results.

[nikhsub1]

How might the two blocks perform if the pump flow rate was increased by 50% on the same exact setup? The fact that those tests were not performed, and especially knowing that one block is designed in a specific fashion as to require high pump flow, I call bs on this test as meaningful overall.

Swiftech's pump is uber powerful, think RD-30 or so. I am assuming with the flow rates Gabe posted that his pump was MAXED out. You do realize that to get 50% more flow you would need 2.5 RD-30's? Let me ask you, who will run that much pump? What purpose would that much flow serve? If anything feed the blocks about 50% LESS and see the results.

Now onto some meaningful commentary, I have 100% confidence in skinnee... I know he will do a great job, I do believe he will more than fill Martin's shoes. And ranker, thanks for the kind words.

[SiGfever]

Skinnee is a real professional and a stand up guy. His real life job requires the highest level of professionalism and accuracy. He is a computer junkie like most here and loves the chase for the numbers and reasons why. Skinnee and Martin are two of the same mold, truthful, dedicated and accurate to a fault.

I for one applaud skinnee's dedication to this forum and to the passion that we call watercooling.

[santiagodraco]

Swiftech's pump is uber powerful, think RD-30 or so. I am assuming with the flow rates Gabe posted that his pump was MAXED out. You do realize that to get 50% more flow you would need 2.5 RD-30's? Let me ask you, who will run that much pump? What purpose would that much flow serve? If anything feed the blocks about 50% LESS and see the results.

Now onto some meaningful commentary, I have 100% confidence in skinnee... I know he will do a great job, I do believe he will more than fill Martin's shoes. And ranker, thanks for the kind words.

To be honest I didn't realize that. Then I went over and read Skinee's review of the Koolance top (which reviewed well) and the flow rates at max speed....

Honestly it looks like I was completely wrong in my assumption here and that Gabe was actually running at a higher pressure than the vast majority of users in the field would ever see.

Frankly I'm a bit embarassed but I'd rather learn the hard way than not learn at all

[nikhsub1]

To be honest I didn't realize that. Then I went over and read Skinee's review of the Koolance top (which reviewed well) and the flow rates at max speed....

Honestly it looks like I was completely wrong in my assumption here and that Gabe was actually running at a higher pressure than the vast majority of users in the field would ever see.

Frankly I'm a bit embarassed but I'd rather learn the hard way than not learn at all

I have the utmost respect for people who can admit when they are wrong, learn from it and move on. I do it all the time. I've been wrong and when I am, I own up to it. Your clout with me just went up a whole lot.

[ranker]

Interesting, I was reading another thread and stumbled on something:

http://www.xtremesystems.org/forums/...d.php?t=201501

Hellcamino seems to be passionate about his dislike for Swiftech. I now see why he's so adamant about proving Gabe/Swiftech wrong.

[gabe]

It has been a bit entertaining and frankly I'm probably pushing too hard. I tend to get overly passionate about things like this and I should probably back off a bit

So, in the interest of fairness and all that, I have a suggestion that I think might resolve the issue and make Gabe's tests more valid.

I suggest that the tests be conducted like this. First, take the GTZ block and install and test as Gabe mentioned. The key here is to find the BEST temperature possible with the same load and same water temperature by only varying the water flow. In other words change the water flow over time, pausing at various steps and observing the resulting temperature, until you find the absolute lowest you can get.

Next repeat the test for the CPU-350. Keep all test conditions the same except vary the flow rate until you obtain the absolute lowest temperature for the Koolance block.

If the theory is right you might have a best low temp for each block at varying speeds/flow for the pump. If true it might indicate that each blocks "sweet spot" is different, so choosing one over the other may depend on the type of pump, or flow rate, you plan on using.

Of course we may see that one block is always lower across all flow rates. If true then great, we have a king. But I think it's too early to tell that.

Sound reasonable?

please read: http://www.xtremesystems.org/forums/...&postcount=162 it explains how difficult what you are asking for is.