[kenny_k]

In case anyone's been looking, I just saw Petra Tech Shop was 'out of stock' on the DDC-2 w/Petra top but I did see them at Sidewinder.
http://www.sidewindercomputers.com/swmcwdeddcpu.html

[Captain Slug]

Petra's is out of stock on the pump, but not the tops.
http://www.petrastechshop.com/peddcudeddcp.html

[Graystar]

I dunno...seems like a lot of money to spend for no measurable improvement to the system. But hey...it’s your money!

[QuietIce]

Originally Posted by Graystar

I dunno...seems like a lot of money to spend for no measurable improvement to the system. But hey...it’s your money!

I'll find out in a couple of weeks. As soon as Sidewinder gets those Deltas in I'll be experimenting. How about an FX-55 and a 4400+ - both OC'ed and under Storms? You think that will be enough load for a test loop ...? :evil grin:

[Graystar]

Originally Posted by QuietIce

Nowhere in the landscape of watercooling forums will you find a post that says:

“I just switched to a DDC with an aftermarket top and my temperatures dropped!”

And there is a very good reason for this...because it doesn’t. Most people will only see a 0.1 GPM improvement in flow rate by using a Petra top. Some will get no improvement. A few will get a loss of flow. In any case, a DDC+ already provides enough flow such that any increase of any size (or slight decrease) will likely go unnoticed.

[Captain Slug]

Originally Posted by Graystar

“I just switched to a DDC with an aftermarket top and my temperatures dropped!”

And there is a very good reason for this...because it doesn’t.

The circumstances would entirely depend on what equipment the DDC-2 is pumping water through.
And I'm under the impression that another highly attractive reason to use an alternative top with the pump is so you can use 1/2" ID barbs rather than adapting the 3/8" barbs on the stock top.

[Graystar]

Originally Posted by Captain Slug

The circumstances would entirely depend on what equipment the DDC-2 is pumping water through.
And I'm under the impression that another highly attractive reason to use an alternative top with the pump is so you can use 1/2" ID barbs rather than adapting the 3/8" barbs on the stock top.

That may be the general belief, but it's not reality. It doesn't matter what equipment is being used.

Using 1/2" barbs, however, is a good reason if it's really a pain to use 3/8" (or if you just want to use 1/2".) Again, the chances of seeing an improvement between 3/8" and 1/2" is pretty slim but if it makes building the system easy then it might have value.

Personally, I use 3/8", but otherwise I would just use a couple of 3/8"-1/2" converters on my DDC if I had to use 1/2" tubing.

[greyharte]

besides the petra and alpha tops look cool ... 8)

[QuietIce]

Originally Posted by Graystar

That may be the general belief, but it's not reality. It doesn't matter what equipment is being used.

Using 1/2" barbs, however, is a good reason if it's really a pain to use 3/8" (or if you just want to use 1/2".) Again, the chances of seeing an improvement between 3/8" and 1/2" is pretty slim but if it makes building the system easy then it might have value.

Personally, I use 3/8", but otherwise I would just use a couple of 3/8"-1/2" converters on my DDC if I had to use 1/2" tubing.

I'm from Missouri and our motto is "Show Me" (no joke - ever heard of a "Missouri Mule"?), so I'll test that for myself. I'll post results just because but I'm not really doing it for anybody else, just me. Two Delta EFB1212SHE on a heater core and a pair of Storms will make up the loop. I have both an MCP350 and an MCP355 plus a Petra's top and I'll also be switching the tubing sizes from 3/8" to 1/2" - a total of eight configurations. Just for grins I might add another heater core on two or four of the configs but it won't have the Delta's on it, just a couple of Scythes for a pre-cooler.

Sidewinder is now saying end of next week before they get the fans originally it was 20 Jan ...

[Graystar]

Originally Posted by QuietIce

I'm from Missouri and our motto is "Show Me" (no joke - ever heard of a "Missouri Mule"?), so I'll test that for myself. I'll post results just because but I'm not really doing it for anybody else, just me. Two Delta EFB1212SHE on a heater core and a pair of Storms will make up the loop. I have both an MCP350 and an MCP355 plus a Petra's top and I'll also be switching the tubing sizes from 3/8" to 1/2" - a total of eight configurations. Just for grins I might add another heater core on two or four of the configs but it won't have the Delta's on it, just a couple of Scythes for a pre-cooler.

Wow! That's a lot of testing! I'm certainly interested in the results. Hope it all goes well!