Could I use MCP650 and MCP600 in series??

ed.howell · 03-31-2005, 05:05 PM

I currently have a MCP650, Weapon 302 Heatercore and shroud, MCW6002, and MCW50 using 1/2 I.D tubing. I bought a MCP600 from a member on another forum, it took a poop and I just got a new one from Swiftech (Excellent Customer Service by the way). I got the 600 cause it is quieter, but I was thinking maybe I could run them in series. Would I see any temp drop?

Thanks in advance.

Ed

MANmitch · 03-31-2005, 08:24 PM

I believe you can run the two in a series, but it isn't recommended.

jinu117 · 03-31-2005, 09:40 PM

I don't see why not? Go for it.

MaxxxRacer · 03-31-2005, 10:36 PM

yah u can without issue. it wont hurt a thing.

a5h · 04-01-2005, 12:37 AM

i wouldn't ...i doubt they have the same specs. one would slow the other down i wud think.

i would make 2 loops ...1 for ur CPU and one for ur GPU.

ed.howell · 04-01-2005, 04:08 AM

Maybe I will just sell the 650 and get another 600. If I ran 2 pumps in series, whether it was a 650 & 600 or 2 600's would I see a temperature drop with my setup?

Thanks,

Ed

MaxxxRacer · 04-01-2005, 04:15 AM

yah u would. overvolting one of them would be the better option though. one 600 overvolted provides a little more performance than two of them as it is less heat dump with increased flow. the flow isnt as much as two of them but its increased by around 25 percent from stock. this is at 13.8 volts.

ed.howell · 04-01-2005, 05:33 AM

Quote:

Originally Posted by MaxxxRacer

yah u would. overvolting one of them would be the better option though. one 600 overvolted provides a little more performance than two of them as it is less heat dump with increased flow. the flow isnt as much as two of them but its increased by around 25 percent from stock. this is at 13.8 volts.

How can you overvolt it?? Max I would want to run my 12V rail 24/7 is about 12.5 or so. Could I put something in line that would raise the voltage just to the pump?

eva2000 · 04-01-2005, 05:58 AM

i run exactly this MCW6002 with MCP650+MCP600 in series with Thermochill 120.3 with 12v rail at 12.38v with no probs

I did this as i have very long tube length on external water cooling setup and Colder quick disconnects within the loop

ed.howell · 04-01-2005, 07:05 AM

Quote:

Originally Posted by eva2000

i run exactly this MCW6002 with MCP650+MCP600 in series with Thermochill 120.3 with 12v rail at 12.38v with no probs

I did this as i have very long tube length on external water cooling setup and Colder quick disconnects within the loop

Did it drop your temps any?? having the 2 pumps in series.

Premmer · 04-01-2005, 10:00 AM

Quote:

Originally Posted by ed.howell

How can you overvolt it?? Max I would want to run my 12V rail 24/7 is about 12.5 or so. Could I put something in line that would raise the voltage just to the pump?

Yes, order a Mean Well Model SD-25A-12 DC-DC Converter priced $23.61 plus shipping. Converter is rated at 25.2W, 2.1A @ 12Vdc. Its physical size is slightly less than 4-in square and is ~ 1.4-in in height. Input voltage range is 9.2V to 18Vdc. Adjustable output voltage range is 11V to 16Vdc, which is ideal for the Swiftech MCP600 operating at 14.0V There is an 8-week lead-time on delivery.
Link to supplier's website:http://www.cdiweb.com/PortalProductD...d=258354&fmt=1

You can open/download the converter data sheet which has all the details one could possibly want/need.

ed.howell · 04-01-2005, 10:05 AM

Quote:

Originally Posted by Premmer

Yes, order a Mean Well Model SD-25A-12 DC-DC Converter priced $23.61 plus shipping. Converter is rated at 25.2W, 2.1A @ 12Vdc. Its physical size is slightly less than 4-in square and is ~ 1.4-in in height. Input voltage range is 9.2V to 18Vdc. Adjustable output voltage range is 11V to 16Vdc, which is ideal for the Swiftech MCP600 operating at 14.0V There is an 8-week lead-time on delivery.
Link to supplier's website:http://www.cdiweb.com/PortalProductD...d=258354&fmt=1

You can open/download the converter data sheet which has all the details one could possibly want/need.

thanks a lot for the info!! Can you overvolt a 650 also?? Or how about 2 600's in series at 14volts

Premmer · 04-01-2005, 10:36 AM

Quote:

Originally Posted by ed.howell

thanks a lot for the info!! Can you overvolt a 650 also?? Or how about 2 600's in series at 14volts

I don't know if you can OV the 650. In the case of dual 600s, order Mean Well SD-50A-12 @ ~ $30 from same supplier. This model is in stock as I just ordered/received one.

ed.howell · 04-01-2005, 11:18 AM

Thanks.

Just checked on the 50A, they have 0 in stock. So 8 week lead time on that one also.

Would I notice a temp difference though??

Premmer · 04-01-2005, 11:50 AM

[quote=ed.howell]Thanks.

Just checked on the 50A, they have 0 in stock. So 8 week lead time on that one also.

Would I notice a temp difference though??[/QUOTE

Their website may note zero stock on the SD-50A-12, but when I called their 800 number I was told that I should receive it within 10 days and I did. I also have an order for the SD-25A-12. That model will in fact take ~ 8 weeks to receive.

As for the temperature difference, suggest you pose the question on the Procooling Forum. There are some real experts there that respond with factual information. If you do, suggest you supply as much relavent detail as possible about your system's cooling configuration.

Question I posed on another forum:
What is the maximum operating voltage of the Swiftech MCP 600 pump? I'm using the NexXxos XP and wonder if it is worth the effort to build a compact dc-dc converter. Would there be a marked improvement in cooling efficiency if I operate the pump at a higher voltage and what might that voltage be?

Response from Cathar:
Typical operational range is around 10.0v - 14.9v.

Below 10.0v the DC motor inside stops spinning and the pump ceases to work at all.

At or above 15.0v the magnetic armature has a very high chance of magnetically decouple from the impeller, resulting in the motor spinning, but the impeller not spinning (i.e. the pump ceases to pump water). Under very carefully controlled conditions it is possible to get the pump up to 16.0v before magnetic decoupling pretty much always occurs.

14.0v is probably the "safest" over-voltage to run with. Above that and I'd say you're getting into serious pump life-span shortening territory, although I have no actual evidence to back that statement up, but rather is just a feeling. I could be totally wrong and it could kill the pump in a matter of months, but I don't think so as I've run an MCP600 here at 14.0v for about 6 months now without apparant problems.

Performance improvement depends on the radiator and waterblock in use, but somewhere around 0.3-0.6C would probably be a decent guideline of what to expect.

ed.howell · 04-01-2005, 12:30 PM

WOW!

Thanks again for your information!!

eva2000 · 04-04-2005, 12:19 AM

Quote:

Originally Posted by ed.howell

Did it drop your temps any?? having the 2 pumps in series.

don't know as i started with such a setup to begin with before it was single MCP600 with BA rad bought 2nd hand

Butcher_ · 04-04-2005, 03:51 AM

The specs on both pumps are for up to 14V operation so they should be fine overvolted. Series will work - you can use dissimilar pumps in series if you're not going to exceed the maximum freeflow of either of them (which you won't with those two pumps). Generally it's only a problem if you do something like put an eheim 1046 with an iwaki 30Z or something crazy like that.