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DDC 3.2 Pump Top Shootout..10 tops tested - Page 2

post #11 of 73
wow... i never expected the XSPC(res) to beat the EK(res)...
let alone by such an amount...
post #12 of 73
HaHa.....Now I see why you haven't been on much the past few days...Dang thats a lot of tops....I wonder if the res top performs better because its getting more of a true flooded suction? Thanks Martin...Thats a whole lot of work Man...How are you bleeding out your test loop, I know your not still using a t-line with all those....

Marcus was kind enough to take a few pic's for me of the EK with the 3/8 barbs, I've been wanting to see the internals on it ever since I heard they had the bigger barbs, looks like they went with a stepped shoulder on the inlet instead of a taper...I know it would be one more machining operation to taper it but I would think it would sure help flow and velocity if they did..Doesn't look like there is much of any way to taper it with-out taking the shoulder all the way off...There not the only one doing it either, the Petra tops were the same and the one Radiical top I had was just a straight shot with no shoulder or ringed inlet at all....Is the volute in the 3/8 EK as short and sharp as it looked like in the pic's? It looks like it would really slap the water out of it....

Dang i sound like a 10 year old.... I really love those pumps and if they ever bring the performance back up with the 18W I'll be using them again.I think they were the perfect pump and 2 in series was just right....I still have one orange and a couple of blacks so I think I'll get one of the 3/8 EK delrin tops to play with...Thanks for all the hard work....

EDIT: I followed your link and see you have made a PVC res, bleeds pretty fast I bet....My bucket res takes about 30 seconds...

Your right I bet a ringed inlet and a tapered inlet would help a lot...Petra's first top was ringed, he de-ringed it to work on the new blue impeller pumps.His first ones still had a step shoulder on the inlet..Just a tapered inlet with a ring should help a lot, well what I call a lot anyway...
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post #13 of 73
Yes I would love to see how OCLabs tops do, since I'm using 2 of them...
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post #14 of 73
that is some amazing work my friend , rep+
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post #15 of 73
great work, I was actually considering getting a DDC3.2 with the XSPC res top for when I WC my GPU
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post #16 of 73
Excellent work. I'm a bit behind on pumps at the moment, would you expect to see similar trends on a DDC2?

I'm still thinking of playing with a db-1 pump in a low restriction loop as I find my DDC2 a bit noisy in my otherwise quiet system (maybe I have a bad sample). If I do this I'll do a rough comparison against my DDC2, though I don't have any fancy equipment.
post #17 of 73
very nice! what's next, rads and thermal testing? (that'd be great, as they're aren't many reviews out there.... )

Do these companies let you keep the blocks/tops? I think they do, lucky you ....

+rep and thanks for your effort and all your work!

When you do revise your chart, it might be a good idea to show the MCP655 and the monster of a pump iwaki (if you got it)
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post #18 of 73
Quote:
Originally Posted by dr4gon View Post
very nice! what's next, rads and thermal testing? (that'd be great, as they're aren't many reviews out there.... )

Do these companies let you keep the blocks/tops? I think they do, lucky you ....
1) Thermal testing is very hard to do and prove with objective means... too many variables.
2) Not always, hence "loaners"



Hey Martin, it I took a Dremel and smoothed out some of the inlet/outlet edges... it would improve performance? (Similar to your D5 mod)
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post #19 of 73
Quote:
Originally Posted by Scarlet Infidel View Post
Excellent work. I'm a bit behind on pumps at the moment, would you expect to see similar trends on a DDC2?

I'm still thinking of playing with a db-1 pump in a low restriction loop as I find my DDC2 a bit noisy in my otherwise quiet system (maybe I have a bad sample). If I do this I'll do a rough comparison against my DDC2, though I don't have any fancy equipment.
A lot of the pump noise comes from resonance. Try to isolate the pump from the case. It does wonders for noise reduction.
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post #20 of 73
Quote:
Originally Posted by DuckieHo View Post
A lot of the pump noise comes from resonance. Try to isolate the pump from the case. It does wonders for noise reduction.
Memory foam is a great padding material between the case and a pump. That's what I used with my AP1510 and it's almost silent running at 12v
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