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Good PSU For watercooling, future GPUs?

Tags:
  • GPUs
  • Water Cooling
  • Power Supplies
  • Components
Last response: in Components
July 3, 2013 4:10:42 PM

So I've been looking into getting a new PSU. My TX 650 has served me well for two and a half years, but I can definitely do better.

My reasons being: so I can clean up the clutter of wires this non-modular unit leaves at the bottom of my case, so that I don't start getting too close to base PSU requirements for GPUs (I plan to upgrade my GPU next year and some GTX 780s w/aftermarket coolers already require 600w), and because I think some time between the end of this summer and the end of next summer I am going to switch to real water cooling (with something like this kit).

With that in mind, I was thinking a small bump up in wattage would serve me fine, so I was thinking either this Corsair HX 750 or the HX 850.

I've heard that water cooling requires over 1000w PSUs. Is this true? I feel like it wouldn't be. But I plan to add a GPU block to the kit I've linked to prior.

Thanks for your help.

More about : good psu watercooling future gpus

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July 3, 2013 4:16:34 PM

Who told you that? Water-cooling does not take any more power than an air-cooled computer. The only (small amount of) power that you need is for the pump, and that shouldn't make a difference. There are fans and other things, but it is not true at all that one would need 1000W. I would simply get a PSU with a good buffer. If your system is going to be 600-650W, get the HX750. If 650-700, I would probably stick with the HX850 just to be safe. :) 
Getting blocks does not increase your need for wattage! :) 
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July 3, 2013 4:20:17 PM

paradoxeternal said:
So I've been looking into getting a new PSU. My TX 650 has served me well for two and a half years, but I can definitely do better.

My reasons being: so I can clean up the clutter of wires this non-modular unit leaves at the bottom of my case, so that I don't start getting too close to base PSU requirements for GPUs (I plan to upgrade my GPU next year and some GTX 780s w/aftermarket coolers already require 600w), and because I think some time between the end of this summer and the end of next summer I am going to switch to real water cooling (with something like this kit).

With that in mind, I was thinking a small bump up in wattage would serve me fine, so I was thinking either this Corsair HX 750 or the HX 850.

I've heard that water cooling requires over 1000w PSUs. Is this true? I feel like it wouldn't be. But I plan to add a GPU block to the kit I've linked to prior.

Thanks for your help.


Whenever I'm in doubt, I just use a powersupply calculator http://www.extreme.outervision.com/psucalculatorlite.js...

It's not entirely accurate, but it does give you a point of reference to work with. As for water cooling, it does require a bit more power than air cooling for the pump, but I'm pretty sure it's not that much (someone please correct me if I'm mistaken).
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July 3, 2013 4:24:52 PM

robnof said:
paradoxeternal said:
So I've been looking into getting a new PSU. My TX 650 has served me well for two and a half years, but I can definitely do better.

My reasons being: so I can clean up the clutter of wires this non-modular unit leaves at the bottom of my case, so that I don't start getting too close to base PSU requirements for GPUs (I plan to upgrade my GPU next year and some GTX 780s w/aftermarket coolers already require 600w), and because I think some time between the end of this summer and the end of next summer I am going to switch to real water cooling (with something like this kit).

With that in mind, I was thinking a small bump up in wattage would serve me fine, so I was thinking either this Corsair HX 750 or the HX 850.

I've heard that water cooling requires over 1000w PSUs. Is this true? I feel like it wouldn't be. But I plan to add a GPU block to the kit I've linked to prior.

Thanks for your help.


Whenever I'm in doubt, I just use a powersupply calculator http://www.extreme.outervision.com/psucalculatorlite.js...

It's not entirely accurate, but it does give you a point of reference to work with. As for water cooling, it does require a bit more power than air cooling for the pump, but I'm pretty sure it's not that much (someone please correct me if I'm mistaken).


So yeah, pretty much what I said. :) 
And no, you aren't mistaken.
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July 3, 2013 4:31:34 PM

MauveCloud said:
You specified and linked a custom watercooling kit you're looking at. I found the pump specs at the same site:
http://www.xs-pc.com/water-pumps/d5-vario-with-front-co...
37 watts there.
The fans are labeled as 12V 0.23A, so 2.76 watts each.

I was under the impression that they spin at a lower rpm, so that they actually use less power than standard case fans.
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July 3, 2013 5:24:56 PM

Thanks for all the answers. The PSU wattage calculator site isn't working for me, but I think I saw some formulas to calculate how much wattage I'd be using with overclocked CPUs and GPUs. I'm going to go find those but I feel like the 850 will be more than enough to last me through a couple future builds. The only thing I'm unsure of is if I'll be upgrading the CPU/motherboard, since haswell wasn't much of a bump from ivybridge, and next year will just be a die shrink.
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July 3, 2013 6:25:32 PM

paradoxeternal said:
Thanks for all the answers. The PSU wattage calculator site isn't working for me, but I think I saw some formulas to calculate how much wattage I'd be using with overclocked CPUs and GPUs. I'm going to go find those but I feel like the 850 will be more than enough to last me through a couple future builds. The only thing I'm unsure of is if I'll be upgrading the CPU/motherboard, since haswell wasn't much of a bump from ivybridge, and next year will just be a die shrink.


If you're pressed for money, get the IB. If not, the extra $50 or so for Haswell can't hurt.
Don't forget to choose a B.A.; it makes the forums happy :) 
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July 3, 2013 6:29:30 PM

dannyboy2233 said:
paradoxeternal said:
Thanks for all the answers. The PSU wattage calculator site isn't working for me, but I think I saw some formulas to calculate how much wattage I'd be using with overclocked CPUs and GPUs. I'm going to go find those but I feel like the 850 will be more than enough to last me through a couple future builds. The only thing I'm unsure of is if I'll be upgrading the CPU/motherboard, since haswell wasn't much of a bump from ivybridge, and next year will just be a die shrink.


If you're pressed for money, get the IB. If not, the extra $50 or so for Haswell can't hurt.
Don't forget to choose a B.A.; it makes the forums happy :) 


Oh, didn't even realize i hadn't selected a BA. And I have an ivy-bridge now actually, I was more talking about upgrading that next year or the year after.

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July 3, 2013 6:34:30 PM

paradoxeternal said:
dannyboy2233 said:
paradoxeternal said:
Thanks for all the answers. The PSU wattage calculator site isn't working for me, but I think I saw some formulas to calculate how much wattage I'd be using with overclocked CPUs and GPUs. I'm going to go find those but I feel like the 850 will be more than enough to last me through a couple future builds. The only thing I'm unsure of is if I'll be upgrading the CPU/motherboard, since haswell wasn't much of a bump from ivybridge, and next year will just be a die shrink.


If you're pressed for money, get the IB. If not, the extra $50 or so for Haswell can't hurt.
Don't forget to choose a B.A.; it makes the forums happy :) 


Oh, didn't even realize i hadn't selected a BA. And I have an ivy-bridge now actually, I was more talking about upgrading that next year or the year after.




Haha no worries; it's just one of those things I automatically type towards the end of a thread :p 
And there have been speculations that the next Intel processor will use a completely different socket, so I wouldn't completely count on upgradability. However, go with whatever you feel is right in terms of price. :) 
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