Laing DDC for Laing D5??

[perfection]

I bloke wants to trade his Laing D5 for my Laing DDC with petra's top.

now my flow rate is looking like this in open air with the pump sucking up from the tub, height between tub and pump is about 10cm or 4 inches for you american people :D

http://i115.photobucket.com/albums/n297/marty_nguyen/DSC00378.jpg

he's offering me an extra $35AUD which is about $28USD on top of the trade.

I don't care about the money but will the D5 be better than my current DDC??
I know the DDC has a high head pressure but the D5 isn't far behind and has better flowrates

and specs are in sig!

[Graystar]

Based on the known performance of the two pumps, I'd say you probably won't have any difference in flow.

[perfection]

but the D5 can go up to 1200lpm when the laing ddc is only doing 400lpm

[Petra]

I don't care about the money but will the D5 be better than my current DDC??
Short answer: no.

You'll have a higher flowrate, less heat dump, and less noise with the DDC-2 (here, I'm assuming that you aren't using an 18W DDC-3.2... and, even if you are, it would likely still be better due to its very, very low power consumption in the 1GPM range (which you would likely fall within--between 1GPM and 1.5GPM)).

With the D5, you'll have a lower flowrate, more heat dump, and more noise (unless you turn the pump down... but then the specs go all to hell).

*edit, for a touch of perspective* In case that sounded at all misleading, I am talking about very small differences in flowrate (not more than 0.2GPM to 0.4GPM).

[perfection]

ok, thanks for that petra, was that from the test that you conducted?

[Snyxxx]

Petra is absolutely right.

I started with a D5 and switched to a DDC-2 with Petra top. I used the same components (Storm, Maze4 GPU, MCW30 Chipset, BIP2 Rad, MCRES Reservoir) and the flow/pressure difference was huge.

I did not know what I was missing with the DDC-2. With the D5 on 5 setting, the water just barely trickled into the reservoir. With the DDC-2, the water was roaring into the reservoir pretty violently, and this was through a Storm, the ultimate flow killer. All the parts were clean as well and did the test within a few hours.

I will never go back to the D5.

[perfection]

but mines the laing ddc, not the ddc plus, I can't mod to the plus version either as mines the early revision and doesn't have the blue impeller :(

[Petra]

but mines the laing ddc, not the ddc plus, I can't mod to the plus version either as mines the early revision and doesn't have the blue impeller :(
So, wait, you're using a 9W DDC-1?

[perfection]

So, wait, you're using a 9W DDC-1?


yep!

[CedricFP]

yep!
I think that changes things slightly.

[Maviryk]

Eh, too much effort. I think he should just keep the pump. It's not worth the effort.

[Graystar]

I think that changes things slightly.
Test done at systemcooling.com show the same flow rate from a DDC-1 and a D5 in a high restriction loop. I don't see why this would be any different. The rate should be nearly the same.

A DDC-2 will increase the flow rate.