Iwaki WMD20 RLT

Shadco · 01-19-2003, 08:10 PM

Iwaki WMD20 RLT

What are your thoughts about the suitability of this pump for use in a water cooled PC.

Block would be White Water and rad would be Dtek Pro core?

It's rated 420Gph with a max head of 14ft.

Shad

jaydee · 01-19-2003, 10:32 PM

That name looks familiar!

The Iwakies are great pumps, but Cathar himselfs says there was not much temp difference from a 180gph pump to a 370gph pump. I think that pump is serious overkill. I don't think you really want to dump that much cash on one. Here is some alternatives http://www.aquatictech.com/pumps.html
I would stay away from the Rio's. The rest I hear decent things about.

Cathar · 01-20-2003, 12:03 AM

No, not much difference from 160 to 320 to 600gph pumps, but then I was using pumps that dispersed a lot of heat into the water, which the Iwaki's don't. ie. what benefit I was seeing from higher flow rates was being overwhelmed due to the warmer water temps from the hotter stronger pumps.

The Iwaki's disperse most of their motor heat into the air. If there was any high flow/head pump that I'd recommend above something like an Eheim 1250, then the Iwaki MD20-RZ (note the Z - referring to the high pressure head model) would be the one.

You'd gain about 1C or so by using one on a hot CPU under full load.

Skulemate · 01-20-2003, 01:20 AM

As Cathar has said, if you're going with an Iwaki 20 series pump, the RZT is the only one to consider. You might want to consider paying the premium in order to get the Japanese motor, as there is a noticable difference in the noise level and operating temperature between the two.

Volenti · 01-20-2003, 04:13 AM

I got an iwaki MD-20RZ recently, very happy with it's performance, it's lost me at least 2 degrees c off the water temp in my evaporative cooling, never mind the performance advantage it will deliever in an appropriately designed water block.

Shadco · 01-20-2003, 06:01 AM

Quote:

Originally posted by Volenti
I got an iwaki MD-20RZ recently, very happy with it's performance, it's lost me at least 2 degrees c off the water temp in my evaporative cooling, never mind the performance advantage it will deliever in an appropriately designed water block.

Got it then

Thanks folks look for the rzt varient and from what i've read the MD vs the WMD is better too. A little more compact with te japanese moter that run cooler.

Shad

Blackeagle · 01-20-2003, 11:17 AM

Here's a link to a site that has the Z series Iwaki specs.

www.iwakiwalchem.com

And a site that sells them.

www.deepseagallery.com

Hope these are helpfull to you.

01-19-2003, 08:10 PM	#1
Shadco Cooling Neophyte Join Date: Jan 2003 Location: MD Posts: 7	Iwaki WMD20 RLT Iwaki WMD20 RLT What are your thoughts about the suitability of this pump for use in a water cooled PC. Block would be White Water and rad would be Dtek Pro core? It's rated 420Gph with a max head of 14ft. Shad __________________ I knew where I was when I wrote this... I don't know where I am now. AT7 Max2, IT7, 8RDA+, 8RDA, A7N8X-D, KD7-r, Iwill MPX2.

01-20-2003, 01:20 AM	#4
Skulemate Cooling Savant Join Date: Jul 2002 Location: Toronto, Canada Posts: 381	As Cathar has said, if you're going with an Iwaki 20 series pump, the RZT is the only one to consider. You might want to consider paying the premium in order to get the Japanese motor, as there is a noticable difference in the noise level and operating temperature between the two. __________________ Michael E. Robbins M.A.Sc. Candidate, University of Toronto 12.1 GHz of AMD's finest (17.7 GHz total) crunching proudly for the AMDMB.com Killer Frogs SETI BOINC: Dual Opteron 246s (Iwill DK8N) \| XP2800+ (Shuttle SN41G2) \| 3x XP2400+ (ASUS A7N266-vm) SETI BOINC: 2x P4 2.8E (ASUS P4R800-vm) \| Crunching 24/7

01-20-2003, 04:13 AM	#5
Volenti Cooling Savant Join Date: Jan 2002 Location: in a nice cool spot Posts: 427	I got an iwaki MD-20RZ recently, very happy with it's performance, it's lost me at least 2 degrees c off the water temp in my evaporative cooling, never mind the performance advantage it will deliever in an appropriately designed water block. __________________ feel free to icq/msn me, I'm always willing to toss around ideas.

01-19-2003, 10:32 PM	#2
jaydee Put up or Shut Up Join Date: Dec 2001 Location: Spokane WA Posts: 6,506	That name looks familiar! The Iwakies are great pumps, but Cathar himselfs says there was not much temp difference from a 180gph pump to a 370gph pump. I think that pump is serious overkill. I don't think you really want to dump that much cash on one. Here is some alternatives http://www.aquatictech.com/pumps.html I would stay away from the Rio's. The rest I hear decent things about.

01-20-2003, 12:03 AM	#3
Cathar Thermophile Join Date: Sep 2002 Location: Melbourne, Australia Posts: 2,538	No, not much difference from 160 to 320 to 600gph pumps, but then I was using pumps that dispersed a lot of heat into the water, which the Iwaki's don't. ie. what benefit I was seeing from higher flow rates was being overwhelmed due to the warmer water temps from the hotter stronger pumps. The Iwaki's disperse most of their motor heat into the air. If there was any high flow/head pump that I'd recommend above something like an Eheim 1250, then the Iwaki MD20-RZ (note the Z - referring to the high pressure head model) would be the one. You'd gain about 1C or so by using one on a hot CPU under full load.

01-20-2003, 11:17 AM	#7
Blackeagle Thermophile Join Date: Oct 2002 Location: U.S.A = Michigan Posts: 1,243	Here's a link to a site that has the Z series Iwaki specs. www.iwakiwalchem.com And a site that sells them. www.deepseagallery.com Hope these are helpfull to you.

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