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DDC Top & Pump Performance Comparison (Petra's, Radiical, Alphacool, etc.)
- Thread starter Petra
- Start date
Okay, I went ahead and did a parallel test that was suggested...
Experimental Cooling Loop 1 (average restriction):
Test Results:
DDC+ w/ Petra's Top: 12.00V -- 2.32 Gal./min. | 13.80V -- 2.58 Gal./min.
2x DDC+ w/ Petra's Top (Series): 12.00V -- 2.78 Gal./min. | 13.80V -- 3.08 Gal./min.
2x DDC+ w/ Petra's Top (Parallel): 12.00V -- 2.43 Gal./min. | 13.80V -- 2.78 Gal./min.
...and a more graphical representation:
...more evidence that, even in a somewhat low restriction loop, parallel pumps don't do much.
Additionally, as mentioned before, I fiddled around and determined that the DDC+'s will start at up to about 13.19V--to achieve anything above that, you have to start the pumps at that point (or below) and then increase the voltage to the desired amount (13.8V, in this case).
Oh, yeah, take a look at this.... (the sample barbs that Eddy was nice enough to send to me arrived yesterday
)
...I'm such a tease:
Anyway, I'll update my first post to include all of these results as well.
Experimental Cooling Loop 1 (average restriction):
Test Results:
DDC+ w/ Petra's Top: 12.00V -- 2.32 Gal./min. | 13.80V -- 2.58 Gal./min.
2x DDC+ w/ Petra's Top (Series): 12.00V -- 2.78 Gal./min. | 13.80V -- 3.08 Gal./min.
2x DDC+ w/ Petra's Top (Parallel): 12.00V -- 2.43 Gal./min. | 13.80V -- 2.78 Gal./min.
...and a more graphical representation:
...more evidence that, even in a somewhat low restriction loop, parallel pumps don't do much.
Additionally, as mentioned before, I fiddled around and determined that the DDC+'s will start at up to about 13.19V--to achieve anything above that, you have to start the pumps at that point (or below) and then increase the voltage to the desired amount (13.8V, in this case).
Oh, yeah, take a look at this.... (the sample barbs that Eddy was nice enough to send to me arrived yesterday
)
...I'm such a tease
:Anyway, I'll update my first post to include all of these results as well.
Last edited:
You guys are gonna love this....
THEY'RE HERE!!!
That's right, all 200 of 'em... right here... sitting next to me
Though, we can't ship/sell them just yet because we're waiting on barbs to arrive from DD (I don't have an ETA for the EK barbs yet... but, due to the quantity we're ordering, I'm having those sent ASAP. We'll pick up Eddy's blocks once he has finished with the 7950 block and that new reservoir of his). Apparently, we ordered more 1/2" G1/4 High-Flow barbs than DD had in stock... sooooo, we have to wait a few days.
However, I've posted the tops on our site for pre-order (to ship when barbs arrive): http://www.petrastechshop.com/peddcudeddcp.html
Also, again, you'll love this... The machine shop decided to put a MUCH nicer finish (internally and externally) on the production version than they did on the prototypes. The tops are so smooth that they're shiny and a little reflective!!! (though, tooling marks can still be seen... the photos really don't do the finish justice)
Here are some updated photos:
THEY'RE HERE!!!
That's right, all 200 of 'em... right here... sitting next to me
Though, we can't ship/sell them just yet because we're waiting on barbs to arrive from DD (I don't have an ETA for the EK barbs yet... but, due to the quantity we're ordering, I'm having those sent ASAP. We'll pick up Eddy's blocks once he has finished with the 7950 block and that new reservoir of his). Apparently, we ordered more 1/2" G1/4 High-Flow barbs than DD had in stock... sooooo, we have to wait a few days.
However, I've posted the tops on our site for pre-order (to ship when barbs arrive): http://www.petrastechshop.com/peddcudeddcp.html
Also, again, you'll love this... The machine shop decided to put a MUCH nicer finish (internally and externally) on the production version than they did on the prototypes. The tops are so smooth that they're shiny and a little reflective!!! (though, tooling marks can still be seen... the photos really don't do the finish justice)
Here are some updated photos:
Last edited:
I'll check my Solidworks file... gimme a little whilepenguin said:
*EDIT*Okay, rather than give you enough dimensions to build the damn thing....
On the outlet side of the impeller housing, don't drill in more than about 5 or 6mm... there are some spots where you can go pretty deep but the key there is to avoid the outlet channel. On the opposite side, from the base and up 8mm, don't go deeper than 8mm. Above 8mm, you're clearing the impeller housing and can go as deep as 18mm. Also, try to avoid the mounting screw holes--they extend into the top about 11mm.
If you look at the Solidworks screenshots that I posted on the first page, that may make more sense.
D
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Alex,
Can we special order ones that have the mounting holes pre-drilled? I have an AlphaCool top now and I require the mounting holes for my choice of mount. I REALLY want one of yours but the mounting holes will be a deal breaker.
Can we special order ones that have the mounting holes pre-drilled? I have an AlphaCool top now and I require the mounting holes for my choice of mount. I REALLY want one of yours but the mounting holes will be a deal breaker.
Well, I can ask the guys next door if they would be willing to modify some of the tops, as I don't have the necessary taps...or a drill press.SiGfever said:
I was thinking of doing another version that's larger (like the Alphacool tops) to include this feature... but, if they're okay with it, I may not have to... heh
D
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You are "Da Man"!Petra said:
I have to wonder... the DangerDen High Flow fittings were 9/16"-18, and the EK barbs are G1/4". When I looked at my High Flow fittings next to the new Perfect Seal fittings (Also G1/4"), it was clear the High Flow was much bigger and wouldn't fit in a G1/4" hole. Is there some sort of G1/4" High Flow fitting I don't know about?
penguin said:Oh, ok. That's pretty much awesome
you lucky bastard, I'm 16 too and all I got last year was a pack of jigsaw puzzles... (was pretty awesome by the way
)pump top is dead sexy, by the way
Hello seller. My name is John Smith, I am a professor at the University of Nigeria, on leave in London. I am desperate to purchase some of these, seeing how mine was stolen. If you accept, I will have my client send you a western union money order for $500. Take out what the itme is worth, keep an extra 10%, and send the rest back to me.
great tops. I would buy one but... (insert excuse)
great tops. I would buy one but... (insert excuse)BillParrish
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Gotch, been there. Thanks for the reply.
Adidas4275
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does anyone know what version 10w or 18w that DD sells. I got one about 6 months ago and want to know which one it is. or is there a serial number or part number that some one with a 18w can post.
thanks
thanks
Adidas4275
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anyone know what the 10w impeller looks like? Mine is redish orange, i have the alphacool top so i dont even need to pot the top
thunderstruck!
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Please read the post above you....Adidas4275 said:anyone know what the 10w impeller looks like? Mine is redish orange, i have the alphacool top so i dont even need to pot the top
el rolio said:
Adidas4275
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cool, thanks i have the 18w
All of the pictures I've seen of the 18W models have the wattage printed on them, next to the model information. I'm not sure if the 10W versions have their wattage printed as well.
Great top, Petra! My MCP600 has made some nasty sounds a couple times in the last few weeks (lasting about an hour), despite everything looking fine inside when I cleaned it a few months ago. I've been thinking of moving to something quieter recently, though moving my case under my desk has helped that somewhat (can only hear airflow from rad fans at top of case now). The 18W DDC is supposedly louder than the 10W version, but I haven't read any conclusive comparisons with the 50Z/MCP600, what's your take on it?
What's the problem with the P-Seal fittings? Is getting the tubing over them the only issue? A search on here only brought up the tubing fit issue, as far as I could see.
Cheers,
Rick
Great top, Petra! My MCP600 has made some nasty sounds a couple times in the last few weeks (lasting about an hour), despite everything looking fine inside when I cleaned it a few months ago. I've been thinking of moving to something quieter recently, though moving my case under my desk has helped that somewhat (can only hear airflow from rad fans at top of case now). The 18W DDC is supposedly louder than the 10W version, but I haven't read any conclusive comparisons with the 50Z/MCP600, what's your take on it?
What's the problem with the P-Seal fittings? Is getting the tubing over them the only issue? A search on here only brought up the tubing fit issue, as far as I could see.
Cheers,
Rick
In terms of subjective, comparative loudness, I'd say the following:RickyJ said:
(Quietest) ... DDC-1 (9W) < DDC-2 (18W) < D5 < 50Z ... (Loudest)
The DDC-2 isn't much louder than the DDC-1... and, with a custom top, you can hardly hear the damn thing anyway.
Here are some sound comparisons (because, after all, it's not just the amount of noise they emit that matters... it's the quality of the sound): http://www.cooling-masters.com/articles-33-14.html
Well, getting tubing over them is a real pain (especially 7/16" ID tubing) and they have a nice, big, flat face for water to go crashing into, which results in more turbulence at the barbs and a slightly higher pressure drop. (granted, that was the quick, oversimplified version... heh)
Holy crap, I didn't think that the D5 was that much quieter than the D4 at full.
Thanks a bunch for the link, that's exactly what I was hoping to find.
That's kinda what I figured with the P-Seal fittings, just wanted to verify with someone that has experience with them.
Thanks a bunch for the link, that's exactly what I was hoping to find.
That's kinda what I figured with the P-Seal fittings, just wanted to verify with someone that has experience with them.
RickyJ said:Holy crap, I didn't think that the D5 was that much quieter than the D4 at full.
Yeah, the D5 is infinitely quiter than the D4. I ran my D4 at 7V and it was still alot louder than the D5 at full blast (I run mine set on about 2, so it's real quiet).
@ Mark305TBI: The tops ship with the newer G1/4 High-Flow barbs (not the older 9/16 UNF High-Flows or the G1/4 Perfect Seals). The second photo on the product page shows the DDC top with the DD barbs--all of the other photos were taken with the EK barbs installed.
@ rjblanke: We'll be selling both the G1/4 High-Flows and EK barbs individually as well
@ rjblanke: We'll be selling both the G1/4 High-Flows and EK barbs individually as well