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Overvoltaging Swiftech MCP 600

D

DNA

Weaksauce
Joined
Aug 7, 2004
Messages
109
Does anyone have any first-hand experience running this pump on voltages greater than 12V? Is there a marked improvement is cooling efficiency? What impact, if any, was there on pump life? What voltage(s) were used?

Thanks
 
I wouldn't expect much increase because the flow rates it pushes at 12V are already really good.
 
an overvolted MCP600 (13.8 volts to be exact) is 3rd best pump after iwakiMD30 at 18 volts and 2x overvolted MCP600 @ 13.8

so yes, overvolting that specific pump is worth while. this was taken from a post done by the famous Cathar at procooling forum.
 
[em]HEAT said:
How would you overvolt it?
Click to expand...

I would build a variable dc-dc converter that would utilize a 12Vdc input to produce up to 24Vdc out @ ~ 4A. I don't want to purchase a 13.8Vdc supply as they are quite large and I do want to maintain a self-contained system. A converter could be built that would easily be sized at 2-in x 2-in x 1-in.
 
DNA said:
I would build a variable dc-dc converter that would utilize a 12Vdc input to produce up to 24Vdc out @ ~ 4A. I don't want to purchase a 13.8Vdc supply as they are quite large and I do want to maintain a self-contained system. A converter could be built that would easily be sized at 2-in x 2-in x 1-in.
Click to expand...


Is there a tutorial on making the converter?
 
[em]HEAT said:
Is there a tutorial on making the converter?
Click to expand...

I don't know, but let me do a little digging and I'll respond with my findings in a day or so.
 
After changing my fan controller wiring so that I could control the voltage of the pump and control the fans that sandwhich the 120mm rad I've gotten my fans running at 100% as well as the pump and my temps dropped from 54c idle to 42c idle. I like that alot, but would like to see it go down in the low 30's. So I think I'll opt for a dual 120mm rad first to see if that makes any difference. If the new rad can take the temps down in the 30's then I'll be happy with that. If not, then I'll opt for a new pump. And if I still can't achive the temps I want then I'll replace the block. I swear I'll get this box as cool as I want it, one way or another. :D
 
If your running at >40 on idle your biggest problem is most likely your radiator not your pump. What rad do you have in ther right now????
 
[em]HEAT said:
After changing my fan controller wiring so that I could control the voltage of the pump and control the fans that sandwhich the 120mm rad I've gotten my fans running at 100% as well as the pump and my temps dropped from 54c idle to 42c idle. I like that alot, but would like to see it go down in the low 30's. So I think I'll opt for a dual 120mm rad first to see if that makes any difference. If the new rad can take the temps down in the 30's then I'll be happy with that. If not, then I'll opt for a new pump. And if I still can't achive the temps I want then I'll replace the block. I swear I'll get this box as cool as I want it, one way or another. :D
Click to expand...

What exactly did you do to your controller?
 
thewhiteguy said:
I wouldn't expect much increase because the flow rates it pushes at 12V are already really good.
Click to expand...

Not on very restrictive setup. On my loop with 2 MCP600 in series, turning one off means losing 2-3c temp. (G4 and Fusion HL). If I am not wrong 2 MCP600 12v is equivalent to 1 MCP600 13.8v. So there are benfits to be gained... (unless your loop is ultra low restriction)
 
[em]HEAT said:
Is there a tutorial on making the converter?
Click to expand...

I've found a brand name (Mean Well) DC-DC Converter that was price quoted at $23.61 plus shipping. I can't build one for that cost so I will be ordering one in the AM. If you have an interest and have a Swiftech MCP600, this converter would be a good fit as it 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. It's about 2X the size that I had planned for, but I do have plenty of room in my Lian Li PC75 case. The Mean Well model designation is SD-25A-12. Input voltage range is 9.2V to 18Vdc. Adjustable output voltage range is 11V to 16Vdc, which is ideal for the Swiftech MCP600. I would be operating the pump at 14.0V which is estimated to require ~ 15 to 15.5W. There is an 8-week lead-time on delivery. I might mention that I got (2) other price quotes today from other suppliers and their price was ~2x the $23.61. I guess it pays to shop.

Link to supplier's website:http://www.cdiweb.com/PortalProductDetail.aspx?ProdId=258354&fmt=1

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

At this price, you don't want a tutorial on making the converter. Not only would it be time consuming and probably more costly, but there is the risk that it may not function or fail prematurely.
 
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