How many rads and pumps?

[TNortham112]

How many radiators and pumps/ how many of which size radiators and pumps would I need to cool a cpu, motherboard, and one or two gpu?

[helping]

Two 360's would do it, or a 360 and a thick 240.

If you're cooling 290x or something you might want a bit more.

You need a single d5 vario.

[Shaqo_Wyn]

How many radiators and pumps/ how many of which size radiators and pumps would I need to cool a cpu, motherboard, and one or two gpu?

Which CPU/GPU's are we talking here? Do you OC? What temps are you expecting? What case?

[TNortham112]

Which CPU/GPU's are we talking here? Do you OC? What temps are you expecting? What case?

i7 4790K

Asus 780 poseidon, but I might wait and see if there is any news of asus making another water cooled graphics card for one of the 800 series cards

I will be overclocking

not sure about temps

case will be enthoo luxe 

[Jodomcfrodo]

i7 4790K

Asus 780 poseidon, but I might wait and see if there is any news of asus making another water cooled graphics card for one of the 800 series cards

I will be overclocking

not sure about temps

case will be enthoo luxe

I would get a full cover block instead of the Poseidon if at all possible.

For that setup, one D5 and 2x 240mm or 360mm and 240mm.

[Shaqo_Wyn]

i7 4790K

Asus 780 poseidon, but I might wait and see if there is any news of asus making another water cooled graphics card for one of the 800 series cards

I will be overclocking

not sure about temps

case will be enthoo luxe 

Aesthetically speaking you'll have more options getting a 780 with a reference or DCUII PCB and an EK waterblock for it.

 

For dual GPU's and CPU, 360 + 360, you can get away with 360 + 240. I can't find concrete info on the rad thickness the Luxe can accommodate. On first view I think you can have up to a 45mm thick 3x120 or 3x140 rad in the top with push or pull fans. In the front, a 30mm thick 2x120 rad and maybe another 2x120 30mm in the bottom. 

 

I recommend the thickest 3x120 you can fit in push or pull in the top and a thin 240mm in push or pull in the front as you also need room for your pump.

 

Pump: Swiftech MCP655 PWM or Alphacool D5 Vario.

[B NEGATIVE]

You need a minimum of 480 and a single pump for acceptable delta's and quiet operation with 1 GPU

 

Add another 120 of rad for each additional GPU's

[TNortham112]

You need a minimum of 480 and a single pump for acceptable delta's and quiet operation with 1 GPU

 

Add another 120 of rad for each additional GPU's

 

 

Aesthetically speaking you'll have more options getting a 780 with a reference or DCUII PCB and an EK waterblock for it.

 

For dual GPU's and CPU, 360 + 360, you can get away with 360 + 240. I can't find concrete info on the rad thickness the Luxe can accommodate. On first view I think you can have up to a 45mm thick 3x120 or 3x140 rad in the top with push or pull fans. In the front, a 30mm thick 2x120 rad and maybe another 2x120 30mm in the bottom. 

 

I recommend the thickest 3x120 you can fit in push or pull in the top and a thin 240mm in push or pull in the front as you also need room for your pump.

 

Pump: Swiftech MCP655 PWM or Alphacool D5 Vario.

So where in the case would I put the rads? 

http://www.phanteks.com/Enthoo-Luxe.html

 

Would I put a 360 rad in the top, 240 rad in the bottom, then have the front as intake, and back as exhaust

Or 360 rad in the top, 240 rad in the front, then bottom as intake and back as exhaust?

[Shaqo_Wyn]

So where in the case would I put the rads? 

http://www.phanteks.com/Enthoo-Luxe.html

 

Would I put a 360 rad in the top, 240 rad in the bottom, then have the front as intake, and back as exhaust

Or 360 rad in the top, 240 rad in the front, then bottom as intake and back as exhaust?

Both configs are possible. #2 leaves ample room behind the side panel shroud for your pump/res.

 

I recommend you do: 360 rad top exhaust, 240 rad front intake, pump/res combo behind 240 rad (no bottom intake) and a rear intake fan. You'll be working with convection and have neutral/slight positive air pressure depending on the fans you use.

[B NEGATIVE]

Rads should never use exhaust air from another rad,all intaking or all exhaust.

 

Also,convection plays no part in cooling if there is air movement,convection results like you think happen only happen in still air.

[TNortham112]

Rads should never use exhaust air from another rad,all intaking or all exhaust.

 

when I was talking about intake and exhaust I just meant fans with no rads, because there will still be room in the case to have some fans 

[Shaqo_Wyn]

Rads should never use exhaust air from another rad,all intaking or all exhaust.

 

Also,convection plays no part in cooling if there is air movement,convection results like you think happen only happen in still air.

Do you know how many people run their rads like this? Like don't even take my word for it, if you like. Just do a simple Google search and you'll see how many people run their bottom/front rads as intake and their top/rear rad as exhaust. You'll also gather that having them all as exhaust, intakes or intakes and exhaust all lead to one thing. Negligibly higher or lower temps. Having a good, logical airflow path does matter. 

[B NEGATIVE]

It doesn't make them right tho does it......

 

 

This is thermodynamics 101,when the air goes thru the rad,it increases in temp. This increased air temp renders is heat carrying capacity much lower than the intaking air,re-using this heated air to try and cool another rad is fail. The same principle can be seen with sandwiched rads.

 

The kind of directed airflow you are talking about is required for aircooling where the emissive heat source is in enclosed environment .

 

 

 

As for seeing rigs...I run the OCN watercooling club which has more posts than this entire sub forum.......

[G9x001]

the rule of thumb for water cooling is 120mm of rad per block for a mild overclock. add 120mm of rad for every 2 blocks if you want a high overclock. 3 blocks mild overclock= 360mm rad. 3 blocks high overclock=540mm of rad. as for pumps it depends on restriction of flow.

heat transfers in 3 ways

convection

radiation

conduction

remember also that air is lighter then water and air will naturally get trapped at any high point. so keep your res as high as possible. 

keep this in mind when placing your fans, rads, pump and res in your case and you should be all good.

 

[TNortham112]

It doesn't make them right tho does it......

 

 

This is thermodynamics 101,when the air goes thru the rad,it increases in temp. This increased air temp renders is heat carrying capacity much lower than the intaking air,re-using this heated air to try and cool another rad is fail. The same principle can be seen with sandwiched rads.

 

The kind of directed airflow you are talking about is required for aircooling where the emissive heat source is in enclosed environment .

 

 

 

As for seeing rigs...I run the OCN watercooling club which has more posts than this entire sub forum.......

 

 

Do you know how many people run their rads like this? Like don't even take my word for it, if you like. Just do a simple Google search and you'll see how many people run their bottom/front rads as intake and their top/rear rad as exhaust. You'll also gather that having them all as exhaust, intakes or intakes and exhaust all lead to one thing. Negligibly higher or lower temps. Having a good, logical airflow path does matter. 

 

 

the rule of thumb for water cooling is 120mm of rad per block for a mild overclock. add 120mm of rad for every 2 blocks if you want a high overclock. 3 blocks mild overclock= 360mm rad. 3 blocks high overclock=540mm of rad. as for pumps it depends on restriction of flow.

heat transfers in 3 ways

convection

radiation

conduction

remember also that air is lighter then water and air will naturally get trapped at any high point. so keep your res as high as possible. 

keep this in mind when placing your fans, rads and res in your case and you should be all good.

so... I was thinking about rad layout and I am now thinking about getting the 750D, H440, or Enthoo Luxe.

would it be best to have the front rad and fans as intake, then the bottom fan and rad, top fans and rad, and the back fan as exhaust?

[Shaqo_Wyn]

It doesn't make them right tho does it......

 

 

This is thermodynamics 101,when the air goes thru the rad,it increases in temp. This increased air temp renders is heat carrying capacity much lower than the intaking air,re-using this heated air to try and cool another rad is fail. The same principle can be seen with sandwiched rads.

 

The kind of directed airflow you are talking about is required for aircooling where the emissive heat source is in enclosed environment .

 

 

 

As for seeing rigs...I run the OCN watercooling club which has more posts than this entire sub forum.......

I used to care about all intake rads, all exhaust rads and the like. One day I tested all these configs, conclusion increase/decrease in temps.. NEGLIGIBLE. Different situations call for different rad configs. If anything I didn't like that my motherboard temps increased plenty when I ran all intake rads.

 

P.S: I've seen half the WC builds on OCN.

[Shaqo_Wyn]

so... I was thinking about rad layout and I am now thinking about getting the 750D, H440, or Enthoo Luxe.

would it be best to have the front rad and fans as intake, then the bottom fan and rad, top fans and rad, and the back fan as exhaust?

IMO yes. Note that both the H440 and 750D don't have the best front panel airflow. Go with the Enthoo Luxe.

[B NEGATIVE]

I used to care about all intake rads, all exhaust rads and the like. One day I tested all these configs, conclusion increase/decrease in temps.. NEGLIGIBLE. Different situations call for different rad configs. If anything I didn't like that my motherboard temps increased plenty when I ran all intake rads.

 

P.S: I've seen half the WC builds on OCN.

 

That may be the case in your instance,however you are not everyone.

 

I have tested my SR2 rig in all sorts of configs,intake always yielded 4c better CPU temps. Tests I have performed showed a 60% (+-5%) loss in rad efficiency with a 240 feeding a 240 at load.

 

 

I agree with the mobo temps increasing but its nowhere near the most thermally limited component.

[G9x001]

so... I was thinking about rad layout and I am now thinking about getting the 750D, H440, or Enthoo Luxe.

would it be best to have the front rad and fans as intake, then the bottom fan and rad, top fans and rad, and the back fan as exhaust?

 

Hi they say having a positive pressure in your case will help keep the dust out as well I have never tested this.

But to help the lay out of your rads and thinking about the way that heat transfers I would go with

front fan and rad and bottom fan and rad as intake.

and top fans and rad and back fan as exhaust.

 

but keep in mind the heat from the bottom and front rads will be transferred into your case making the other component heat up. So keep the smaller rads to the bottom and front of the case if possible and put the largest one at the top.

your loop should also follow the natural convection (heat rising cold falling this does apply to liquid as well) so try to have your outlet of your CPU and GPU rising and the out let of your rads falling. 

 

But at the end of the day what ever gets you gaming in a quiet environment is the aim. 

 

[B NEGATIVE]

Dear god.....

 

 

Convection plays no part in powered cooling of any type,water or air.

 

The moment you have a fan or a pump in your chosen cooling medium,natural convection patterns do not occur.

[G9x001]

Dear god.....

 

 

Convection plays no part in powered cooling of any type,water or air.

 

The moment you have a fan or a pump in your chosen cooling medium,natural convection patterns do not occur.

 

A mechanical force will disturb the convection not make it disappear.  have you ever turned a heater on in a room with a fan in it and noticed that the roof is always hotter then the floor?

 

[B NEGATIVE]

You are using the sealed room as an analogy? Please,show me this sealed case that matches this.

 

Convection is not a consideration for watercooling,even less so for fluid in your loop....

[G9x001]

You are using the sealed room as an analogy? Please,show me this sealed case that matches this.

 

Convection is not a consideration for watercooling,even less so for fluid in your loop....

 

heat rises any heat source will transfer heat in 3 ways convection conduction radiation.

 

Convection is the rising of heat so put your hand over a open flame and what you feel is convection of heat.

 

conduction is the transfer of heat through an object or matter  put a steel rod in a fire and touch the end of it.

 

radiation is the transfer of heat in a straight line. stand next to the fire at a distance the heat you feel is radiation heat transfer.

 

You tell me where none of this applies in a pc case it all does and it applies to all heat sources.

 

As I stated before open a window in your sealed room you still get the same effect.

 

 

 

 

 

[B NEGATIVE]

I'm well aware of the principles,I have a 2-1 in Physics,thanks tho.

 

My comment stands,convection.plays no part of a powered cooling system.

[B NEGATIVE]

As for your open window...place a fan exhausting out of the room like you have in a case,your comment falls over.