MCP655 (top/no top) or 355 (top/no top) - Which would you choose?

[eponymous]

This poll may help other new watercooling pump buyers like myself. :)

I've not decided which to buy.

[Zehnsucht]

You don't need a poll, you need to read more:
http://www.martinsliquidlab.petrastech.com/DDC32PumpTopTesting.html

[zlojack]

DDC is more versatile due to the smaller size, but depending on your application, both pumps are great.

[Hondacity]

xtop v2 is not on the list...

[j0lly-]

The D5 lasts longer, and is the more silent one? Easy choice

[Waterlogged]

The D5 lasts longer, and is the more silent one? Easy choice

Proof?...and they better be DDC 3.1's or 3.2's. I think I've seen more topics about suspected dead D5's than DDC's since the 3.x's came out. "Silence" is also very subjective.

[NaeKuh]

Theres no choice 9:

http://i125.photobucket.com/albums/p73/aigomorla/IMG_0081.jpg

http://i125.photobucket.com/albums/p73/aigomorla/IMG_0950.jpg

Dual DDC-2 with Dual inlet Top. :D

[eponymous]

You don't need a poll, you need to read more:
http://www.martinsliquidlab.petrastech.com/DDC32PumpTopTesting.html

Well thanks for that, but he only mentions the 335 with different tops. I don't see any mention of how the 655 fairs...

[Zehnsucht]

There is one top which performs the best for the DDC 3.2. Similar for the D5. (http://www.xtremesystems.org/forums/showthread.php?t=218032)

Then you have the pressure/flow charts for both.

[Petra]

The new D-5 top gets the performance close enough to the DDC with top, that I don't need to worry about that.

As far as I'm concerned, the Stock D5 Vario has been close enough to a DDC with top ever since the changeover to the DDC-3.1/3.2 not to really matter.

[ballzD33P]

Well thanks for that, but he only mentions the 335 with different tops. I don't see any mention of how the 655 fairs...

http://www.xtremesystems.org/forums/showthread.php?t=170217

&

http://www.martinsliquidlab.petrastech.com/

[eponymous]

There is one top which performs the best for the DDC 3.2. Similar for the D5. (http://www.xtremesystems.org/forums/showthread.php?t=218032)

Then you have the pressure/flow charts for both.

There seems to be little difference between the two overall...

So which is more important: flow rate or pressure?

[Power_VANO]

I voted for Swiftech MCP655™ 12 VDC Pump (Danger Den D5 Vario) + EK D5 rev2 top
and I own that configuration for now :) D5s are very silent.

[Sadasius]

D5 Vario with DetroitAC top! :up:

[railmeat]

You don't need a poll, you need to read more:
http://www.martinsliquidlab.petrastech.com/DDC32PumpTopTesting.html

lol


p655 cranked upped ftw...want quiet visit a church...

[pneubmatic]

Theres no choice 9:

http://i125.photobucket.com/albums/p73/aigomorla/IMG_0081.jpg

http://i125.photobucket.com/albums/p73/aigomorla/IMG_0950.jpg

Dual DDC-2 with Dual inlet Top. :D

Now that is just too cool for school... I gotta get one of these.... No, wait, I'm going to need two. I'm going to break my GPU out into a seperate loop, so I'd need one for that loop and one for my CPU loop.

Naekuh, did you have this custom made, or is it available for purchase somewhere?

[moogle]

or is it available for purchase somewhere?

It's available for purchase I think as there are a few dual ddc tops :)

[NaeKuh]

u need to get them custom moded or they wont fit.

as alex says the 3.2 is weak compared to the 2.

And that config has dual 2's.

I dont like the D5. Its ugly, big, and bulky. Moded, looks even more uglier like a wanna be Cylon from battlestar galatica.

You guys complain about noise coming from your DDC, i respect that, because in a silent config yeah, you can hear them. But when you got a 1kw PSU roaring under load because you have 2 HD X2's im sorry silent definition went out the window.

Also silent in the presense of 5 raptors, and almost 12 san aces is called wishful thinking.
(I chase after dreams, not rainbows).

But yeah, i prefer the DDC because of pressure.

Why? because all the good cpu blocks are pressure dependant. I have a total of 10DDC's being used and unused and had 4 D5's. 2 of which i gave away, and possiblywill give away a third to skinnee if i ever get it back.

My motto will always be, if i have to use a D5, F it.

Drop the RD-30 in and go all the way. (which i still have sitting unused in a box).

[Snyxxx]

But yeah, i prefer the DDC because of pressure.

Why? because all the good cpu blocks are pressure dependant. (which i still have sitting unused in a box).

Yes, when I use a Storm waterblock (highly restrictive) the difference between a D5 and DDC is obvious by just watching the water go into the reservoir. D5 is dribbling in and DDC is violently rushing in. After that day, DDC all the way in a highly restrictive system.

I have also used a DDC with only a Fusiion V2 stock (low restriction). The flow was too much (if that is possible) and made a roaring noise days after it was bled out, or at least thought it was.

[slim142]

There is no D5 with Detroit top lol!

[veedubfreak]

With 2 655s, 10 yate loon mediums, and 3 hard drives my system isnt all THAT loud. I cant hear the pumps over the fans anyway. And considering i always have a movie blaring in the background it doesnt need to be silent.

[NaeKuh]

Im sure you guys saw this.

The UBER D5, costs almost as much as my RD-30.

http://www.performance-pcs.com/catalog/index.php?main_page=product_info&cPath=59_201&products_id=24737

http://www.performance-pcs.com/catalog/images/products/Uber-D5_01.jpg

mmmm .. okey if u guys like that kind of stuff. :rofl:

Wait if bitspower and liang are chinese, koolance is korean, how can you use the word UBER since its german?

[eponymous]

Ok,

I've decided to get the DDC + XSPC Top with Reservoir. I should've included the XSPC res in my poll as it appears to be the best performer.

Does anyone know what is involved in assembling these together?

[Jhors2]

A couple of screws, and you just line it up, pretty easy.

[NaeKuh]

Ok,

I've decided to get the DDC + XSPC Top with Reservoir. I should've included the XSPC res in my poll as it appears to be the best performer.

Does anyone know what is involved in assembling these together?

a Torque driver, because the DDC is longer (that other funky name bit).

And a + head because the screws for the res are +.

[hotdun]

Get the DetroitAC top aka best performing D5 top in there!!!

[pneubmatic]

It's available for purchase I think as there are a few dual ddc tops :)

Thanks, I'll keep looking for one then.

My three + year old 655 just took a grumby on me. It was in a file/media/backup server downstairs in the basement. Kinda emphasizes the need to have a backup pump in each loop, or at least have some sort of software protection in place if your one pump fails. Luckily, mine shut down without too much damage... the comp still works, but it no longer recognizes some of the stuff attached to the south bridge, for some reason. Unfortunately, that inlcuded my backup RAID array, but it was just a backup.

I was just going to replace my Eheim 1250 with that pump on my new i7 build, too. Glad I didn't.

Sorry for going OT, but the OP might want to think about a dual pump config for reliability. I know I am now.

Edit: I found this...Dual Top (http://www.sidewindercomputers.com/ekdututopg1a.html), but as Naekuh said, it doesn't have dual inlets.

[Jhors2]

Some people hook up the pump so that the motherboard recognizes the speed and then has it shut down if it falls under a certain RPM ;)

[pneubmatic]

Some people hook up the pump so that the motherboard recognizes the speed and then has it shut down if it falls under a certain RPM ;)

Oh, I'm soooo busted. :D

Yeah, having a pump die on you is kinda like losing an HD that you haven't backed up... you only have to do it once to really learn your lesson.

And from now on, I'll have redundant pumps, and monitoring software.:yepp:

[NaeKuh]

Oh, I'm soooo busted. :D

Yeah, having a pump die on you is kinda like losing an HD that you haven't backed up... you only have to do it once to really learn your lesson.

And from now on, I'll have redundant pumps, and monitoring software.:yepp:

DDC's come with RPM sensors.

I dont know if the D5's do.

I know my old variables didnt.

Meh, b4 i would recomend the D5, because the DDC-2 had horrible fail rates. But the 3.2's have been living to there expectations.

[Sadasius]

The vario D5's don't have a RPM sensor but the 655-B does. But it has lower performance and is at a fixed level. Would be like the vario on setting #4. But there is a trick if you have no RPM wire and that is to use a flow switch. Flow stops then the mobo shuts her down. Koolance has a nice high flow one now and just use the BIOS settings on your mobo to shut her down if the RPM goes under a certain limit or there is a sudden stop in flow which is actually better in case you plugged a block, rad or whatever with dye or other gunk. A pump will still keep pumping if there is a blockage and is not the most reliable for a shut down.

http://www.koolance.com/water-cooling/images/more/ins-fm17_p0.jpg (http://www.koolance.com/water-cooling/product_info.php?product_id=740)

[eponymous]

a Torque driver, because the DDC is longer (that other funky name bit).

And a + head because the screws for the res are +.

A "Torque driver" ? :S

Also, if this thing is put together with just screws, what stops it leaking?

[Petra]

A "Torque driver" ? :S

Also, if this thing is put together with just screws, what stops it leaking?

The DDC's are held together with four screws and there's an o-ring which surrounds the impeller housing, sealing the pump.

Here's a video (http://www.youtube.com/watch?v=uJGKIiD9dDI) on changing the tops... it's a little dated and doesn't directly reference the XSPC top but you'll get the idea. As I recall, Laing has gone back to using Torx head screws on the DDC pumps (for a while they were using Pozidriv and a Torx/slot combo head prior to that). So, as NaeKuh was mentioning, you're going to need a Torx screw driver (though, everybody who works on computers (esp. laptops) and German cars should have Torx (as well as hex) drivers a plenty).

[eponymous]

The DDC's are held together with four screws and there's an o-ring which surrounds the impeller housing, sealing the pump.

Here's a video (http://www.youtube.com/watch?v=uJGKIiD9dDI) on changing the tops... it's a little dated and doesn't directly reference the XSPC top but you'll get the idea. As I recall, Laing has gone back to using Torx head screws on the DDC pumps (for a while they were using Pozidriv and a Torx/slot combo head prior to that). So, as NaeKuh was mentioning, you're going to need a Torx screw driver (though, everybody who works on computers (esp. laptops) and German cars should have Torx (as well as hex) drivers a plenty).


Same screws as HDD's :P

I can get the shop I'm purchasing from to assemble it for me, but I may do it myself. However, if it leaks, I can blame them if they assemble it :D.

I do have a Torx set but I don't have the very very small sizes. Do you know what it is (T4, T5 etc) ?

[NaeKuh]

i have the worst spelling on the forum. :P

[pneubmatic]

The vario D5's don't have a RPM sensor but the 655-B does. But it has lower performance and is at a fixed level. Would be like the vario on setting #4. But there is a trick if you have no RPM wire and that is to use a flow switch. Flow stops then the mobo shuts her down. Koolance has a nice high flow one now and just use the BIOS settings on your mobo to shut her down if the RPM goes under a certain limit or there is a sudden stop in flow which is actually better in case you plugged a block, rad or whatever with dye or other gunk. A pump will still keep pumping if there is a blockage and is not the most reliable for a shut down.

http://www.koolance.com/water-cooling/images/more/ins-fm17_p0.jpg (http://www.koolance.com/water-cooling/product_info.php?product_id=740)

I had been considering that switch, but I was concerned about adding an additional restriction in an already crowded loop. I think the benefit of having it out weighs the added restriction. Thanks for the info on this... I think I'll go order one right now. My tax return money just came. :D

I was also thinking that since I would have two pumps in the loop, I wouldn't need the switch since I had redundancy. Your point about getting a clog in the system is well taken. I'm definitely getting the switch.

And just so this post isn't TOTALLY off topic: I'd vote for dual 350's or 355's in series. I'm trying to make this decision, too. Right now I'm leaning toward: res- 350- CPU WB- GTX295 WB - 350 - rad sandwich - res

[Petra]

I do have a Torx set but I don't have the very very small sizes. Do you know what it is (T4, T5 etc) ?

As I recall, they're T20.