GPU Back Cooling

[L6553]

Hi all

 

GPU back cooling (putting 1 or 2 fans suspended at the back side of the videocard --- i.e. ataching 1 fan to the side case fan with 2 L squares ---- the same can be done with the back case fan)

 

Better cooling with or without backplate in the videocard?

 

Greetings.

[8-Bit Ninja]

4 minutes ago, L6553 said:

Hi all

 

GPU back cooling (putting 1 or 2 fans suspended at the back side of the videocard --- i.e. ataching 1 fan to the side case fan with 2 L squares ---- the same can be done with the back case fan)

 

Better cooling with or without backplate in the videocard?

 

Greetings.

wont make any real difference 

[XrayCy]

a metallic back-plate probably works as a heat-sink so better cooling 

[iamdarkyoshi]

Just now, XrayCy said:

a metallic back-plate probably works as a heat-sink so better cooling 

The PCB is a slab of copper and fiberglass though. Depends on how thermally attached the backplate is.

[L6553]

yes ,maybe better surface distribution

 

[L6553]

1 minute ago, iamdarkyoshi said:

The PCB is a slab of copper and fiberglass though. Depends on how thermally attached the backplate is.

well yes, it is also true...

 

[L6553]

1 thing for sure: backplates get hot.

[iamdarkyoshi]

Just now, L6553 said:

1 thing for sure: backplates get hot.

If the backplate has holes or ridges in it AND has thermal pads that conduct heat from the GPU die, VRMS and videoram, cool the backplate. If not, then just blow air on the PCB itself. But a more effective way to keep things cool is to improve case airflow. What case are you using, what videocard, and where are your fans placed, in which direction?

[MblaZe7run]

3 minutes ago, L6553 said:

1 thing for sure: backplates get hot.

2 things are for sure; they're supposed to. 

 

If the card needed fans on the back, they would be there.

[L6553]

Just now, iamdarkyoshi said:

If the backplate has holes or ridges in it AND has thermal pads that conduct heat from the GPU die, VRMS and videoram, cool the backplate. If not, then just blow air on the PCB itself. But a more effective way to keep things cool is to improve case airflow. What case are you using, what videocard, and where are your fans placed, in which direction?

no no, my case airflow is ok, thanks! : )  

[L6553]

3 minutes ago, MblaZe7run said:

2 things are for sure; they're supposed to. 

 

If the card needed fans on the back, they would be there.

well, I not agree to that. If you put a backplate on the videocard you now have heat on the card´s back... and it could heat your nb heatsink deppending of where it is placed... 

[MblaZe7run]

Just now, L6553 said:

well, I not agree to that. If you put a backplate on the videocard you now have heat on the card´s back... and it could heat your nb heatsink deppending of where it is placed... 

If you don't put a backplate on a card, you still have heat. The hardware engineers study these cards with and without backplates. 90% of them are there for aesthetic and structural reasons, the other 10% are there with thermal properties in mind. My Radeon HD 6950 reaches 93*C under load with a backplate, and the back of the card is toasty, but it still runs fine. My GTX 650Ti reaches 90*C without a backplate and the back of the card gets toasty, but it still runs fine. Video cards aren't some new technology that were prematurely released without thorough testing. You DO NOT need additional cooling on the back of your video card. As @iamdarkyoshi said, the natural airflow of your case will more than handle the thermal properties of the back of your video card.

[L6553]

1 hour ago, MblaZe7run said:

If you don't put a backplate on a card, you still have heat. The hardware engineers study these cards with and without backplates. 90% of them are there for aesthetic and structural reasons, the other 10% are there with thermal properties in mind. My Radeon HD 6950 reaches 93*C under load with a backplate, and the back of the card is toasty, but it still runs fine. My GTX 650Ti reaches 90*C without a backplate and the back of the card gets toasty, but it still runs fine. Video cards aren't some new technology that were prematurely released without thorough testing. You DO NOT need additional cooling on the back of your video card. As @iamdarkyoshi said, the natural airflow of your case will more than handle the thermal properties of the back of your video card.

sorry ---english in progress---

 

[MblaZe7run]

1 minute ago, L6553 said:

GPUs are fore sale, if there is no business in put a cooler on its backs then we got videocards with heat radiation on its backs.

Would you be able to translate that into something comprehensible? You made absolutely zero sense.

[L6553]

GPUs are fore sale, if there is no deal in put a cooler on it´s backs then we got videocards with heat radiation on it´s backs.

[L6553]

what does this mean " It's usually the top card that's hotter because of the gap between the two cards."

I think there is directional radiation

[iamdarkyoshi]

Just now, L6553 said:

what does this mean " It's usually the top card that's hotter because of the gap between the two cards."

I think there is directional radiation

When you have two cards in crossfire/SLI there is not much of a space where air can get in on the top card

[L6553]

yes I know, so it takes the air that is being heated by the bottom card

[L6553]

So.. if the backplate is attached directly o the main heatsink then backplate cooling increase the disipation surface and improves gpu cooling. 

[L6553]

look at this

[L6553]

[L6553]

[L6553]

2 hours ago, XrayCy said:

a metallic back-plate probably works as a heat-sink so better cooling 

you are right

[BarneyP]

On 3/9/2016 at 5:05 PM, MblaZe7run said:

2 things are for sure; they're supposed to. 

 

If the card needed fans on the back, they would be there.

And if cards needed good cooling, then stock coolers be good. And if cards needed high quality thermal paste, then stock thermal paste would be high quality, right?

Just about every corner is cut on just about every card.