The impact of tubing sizes

[ranker]

Some questioned the correctness of old beliefs. Here's an analysis on an old-school system.

The system we're comparing is a DangerDen Maze 4, an Eheim 1048 or Eheim 1250, and a Thermochill HE120.2 with some decent fans on board. ~4 years ago, this was a high performance system in the USA.

Interactive flow-performance results, on an 80W mildly overclocked CPU of the same era may be found here.

The HE120.2 radiator performance curve can be found here. We'll be using the pink curve to represent the fans, which would be about the full-time tolerable noise limit for many individuals.

We'll be assuming a 120W CPU heat load though, which was more typical of the high-end overclockers of the day. Pump heat dump is ~10W for the 1250, and 5W for the 1048.

The flow rates between 3/8" and 1/2" are seen on this graph:



For the 1048:

3/8" => 4.8LPM
1/2" => 6.9LPM

For the 1250:

3/8" => 6.2LPM
1/2" => 9.6LPM

Looking to our Procooling graph, and multiplying the values by 1.5 (120/80), we get:

1048 1/2" to 3/8" delta => 1.4C
1250 1/2" to 3/8" delta => 1.8C

The estimated radiator water temperatures are:

For the E1048:
125W @ 4.8LPM => 5.4C
125W @ 6.9LPM => 5.2C
=> 0.2C delta

For the E1250:
130W @ 6.2LPM => 5.5C
130W @ 9.6LPM => 5.2C
=> 0.3C delta

With lower speed fans, the radiator performance deltas get slightly larger.

So the total delta for 3/8" tubing with barbs to 1/2" tubing with barbs is:

1048 => 1.9C
1250 => 2.1C

Those were the differences for just moving from 3/8" to 1/2", for the really heavy overclockers. Obviously that is what justified the move for many.

Like I've said for those who were wondering why things are different nowadays. Things have changed. Water-cooling has evolved.

I think most of us here at XS grasp the concept and understood how things have evolved and changed.

However, I feel sorry for the fight you're getting over on [H]. Seems like they're a little slow and trying to deliberately spin your results into championing how low-flow setups have been superior all along. (For those that are interested in seeing what happens when you anger the natives: http://www.hardforum.com/showthread....1200495&page=3)

I'm sure most people here at XS will appreciate this graph as it helps demonstrate your conclusions by allowing us to compare how it applied back then and how it applies to today's water cooling components.

[MotF Bane]

However, I feel sorry for the fight you're getting over on [H]. Seems like they're a little slow and trying to deliberately spin your results into championing how low-flow setups have been superior all along. (For those that are interested in seeing what happens when you anger the natives: http://www.hardforum.com/showthread....1200495&page=3)

Would that be considering angering the natives, or being intelligent in the proximity of a troll home?

[ranker]

Would that be considering angering the natives, or being intelligent in the proximity of a troll home?

Being intelligent in a proximity of a troll home for sure.

[RickCain]

Being intelligent in a proximity of a troll home for sure.

You linking to another forum and your comments could be considered trolling too......

But hey, anything to keep the flaming right?

[migueld]

You linking to another forum and your comments could be considered trolling too......

But hey, anything to keep the flaming right?

Heh so true, that's pure flamming/trolling. It's sad

[ranker]

You linking to another forum and your comments could be considered trolling too......

But hey, anything to keep the flaming right?

Heh so true, that's pure flamming/trolling. It's sad

Hi Pot, Meet Kettle, You're black too.

If anything I was thanking Cathar for posting his results so it could be more easily understood/referenced during discussions and pointed out that he wasn't so lucky to receive the same reception at another forum.

[SiGfever]

Considering that Cathar has probably forgotten more about water cooling than most of us will ever know who cares what the uninformed think?

[Top Nurse]

Being intelligent in a proximity of a troll home for sure.

Yeah, I get kind of itchy whenever I come over to XS as there are lots of trolls here as well. It's okay because they do the same dog and pony show, right?

[Turtle 1]

Yeah, I get kind of itchy whenever I come over to XS as there are lots of trolls here as well. It's okay because they do the same dog and pony show, right?

Look TN there are trolls everywhere in all forums . Their are differant kinds. You have the grammer spelling trolls / You have the Intel vs. AMD trolls. ATI vs. NV trolls.

You are infact a small tube troll. But you go one step further by pushing AC products like you own the company.

Some consider myself an Intel troll . I don't however and in Jan. of 08 will find out if I was a troll or had very good insight. Fact is I was banned from both the news section here at XS and banned @ [H] for what has now turned out for telling the trueth. I had my facts pretty much inorder. Yet was punished for it. Its ok tho the world isn't a fair place as we all know.

I read the small tube post @ [H] and your disrespect for cathar was just shamefull. Cathars figures do infact work . However in real world there are variables that when applied in real world terms might go against the math.
That however doesn't matter as its impossiable for cathar to figure how each and every system will work because there are so many . But if given the specs for each system his numbers would win the day. Cathar has forgotten more about flow and pressure in a closed loop system than you will ever know.

I will tell you this straight out. I don't care what happens. If you were my neighbor I would have walked over and B-I-T-C-H slapped you for your disrespect. Cathar has done more for the PC water cooling community than anyone.

I personnally believe your a guy with female genes. Get over it .

[MotF Bane]

Look TN there are trolls everywhere in all forums . Their are differant kinds. You have the grammer spelling trolls / You have the Intel vs. AMD trolls. ATI vs. NV trolls.

You are infact a small tube troll. But you go one step further by pushing AC products like you own the company.

Some consider myself an Intel troll . I don't however and in Jan. of 08 will find out if I was a troll or had very good insight. Fact is I was banned from both the news section here at XS and banned @ [H] for what has now turned out for telling the trueth. I had my facts pretty much inorder. Yet was punished for it. Its ok tho the world isn't a fair place as we all know.

I read the small tube post @ [H] and your disrespect for cathar was just shamefull. Cathars figures do infact work . However in real world there are variables that when applied in real world terms might go against the math.
That however doesn't matter as its impossiable for cathar to figure how each and every system will work because there are so many . But if given the specs for each system his numbers would win the day. Cathar has forgotten more about flow and pressure in a closed loop system than you will ever know.

I will tell you this straight out. I don't care what happens. If you were my neighbor I would have walked over and B-I-T-C-H slapped you for your disrespect. Cathar has done more for the PC water cooling community than anyone.

I personnally believe your a guy with female genes. Get over it .

Minor issue Turtle... Vapor already closed off the Aquaduct thread, told people enough with the flaming/trolling, and somebody banned TN, so he/she won't even see your lecture. Good lecture though.

[ranker]

Look TN there are trolls everywhere in all forums . Their are differant kinds. You have the grammer spelling trolls / You have the Intel vs. AMD trolls. ATI vs. NV trolls.

You are infact a small tube troll. But you go one step further by pushing AC products like you own the company.

Some consider myself an Intel troll . I don't however and in Jan. of 08 will find out if I was a troll or had very good insight. Fact is I was banned from both the news section here at XS and banned @ [H] for what has now turned out for telling the trueth. I had my facts pretty much inorder. Yet was punished for it. Its ok tho the world isn't a fair place as we all know.

I read the small tube post @ [H] and your disrespect for cathar was just shamefull. Cathars figures do infact work . However in real world there are variables that when applied in real world terms might go against the math.
That however doesn't matter as its impossiable for cathar to figure how each and every system will work because there are so many . But if given the specs for each system his numbers would win the day. Cathar has forgotten more about flow and pressure in a closed loop system than you will ever know.

I will tell you this straight out. I don't care what happens. If you were my neighbor I would have walked over and B-I-T-C-H slapped you for your disrespect. Cathar has done more for the PC water cooling community than anyone.

I personnally believe your a guy with female genes. Get over it .

Minor issue Turtle... Vapor already closed off the Aquaduct thread, told people enough with the flaming/trolling, and somebody banned TN, so he/she won't even see your lecture. Good lecture though.

Amen to both. She took trolling to a whole new level.