[ You Tube ] AMD's Top Secret Mission

[VulgarDisplay]

So it is possible. But why are they using two pumps? That's what they are showing, correct? Isn't one enough? Not like you're going to get any extra volume of water pumped as the same amount of water has to pass through the second pump as the first. Or is only one of them a pump?

There were pictures of it exposed on chiphell but they are gone now. I would imagine that the two pumps are for redundancy. If one fails the loop will still work.

 

[Kenmitch]

Silly video. The XFX one from a couple years ago was better I thought. My son used to love those guys/gals.

https://www.youtube.com/watch?feature=player_detailpage&v=VQI8lhHFQ9Q

 

[antihelten]

So it is possible. But why are they using two pumps? That's what they are showing, correct? Isn't one enough? Not like you're going to get any extra volume of water pumped as the same amount of water has to pass through the second pump as the first. Or is only one of them a pump?

I don't know but I would guess they are using two pumps, mainly because they are using generic asetek stuff, and simply using the normal intregrated heatsink/pumps is more straight forward. I suppose using two pumps could also theoretically be less noisy since the pumps don't have to work as hard.

 

[T_Yamamoto]

Silly video. The XFX one from a couple years ago was better I thought. My son used to love those guys/gals.

https://www.youtube.com/watch?feature=player_detailpage&v=VQI8lhHFQ9Q

Now this one was meant to be silly. Which makes it fine.

The other one tried to be professional.

 

[Keysplayr]

There were pictures of it exposed on chiphell but they are gone now. I would imagine that the two pumps are for redundancy. If one fails the loop will still work.

Is it a common thing to have two pumps in any water cooled system? I mean, one that has only one radiator?

 

[cytg111]

it felt a tad too amateurish - not something that compels me to fork over 1k+ for a card and drivers.
I was sure he was gonna stab himself in the eye trying to get those glasses on with one hand..

 

[Grooveriding]

Where do you see that it mentions about two pumps?

I see two blocks because there are two chips but I wonder if they put another pump in the other block.

I presume there is only one though.

I bet this cooler can be easily modifiable. Anyway, if I was to buy this card, I would slap a waterblock right away for 150$ and call it a day.

Pretty much. This card would be insane on a custom loop. My guess on temperatures, considering the amount of rad this comes with, is that they will be similar to a good aftermarket air cooler. Maybe 60-70C. That is a lot of heat for 120mm of rad to handle.

Temps will be great and overclock will be excellent. But overclocking involving additional voltage will likely cause really high temps. But put this thing under a custom block and it will be insane.

 

[TreVader]

Pretty much. This card would be insane on a custom loop. My guess on temperatures, considering the amount of rad this comes with, is that they will be similar to a good aftermarket air cooler. Maybe 60-70C. That is a lot of heat for 120mm of rad to handle.

Temps will be great and overclock will be excellent. But overclocking involving additional voltage will likely cause really high temps. But put this thing under a custom block and it will be insane.

Why would you need a custom block? That would seem like a waste of money vs just adding a second Rad.

 

[TreVader]

Is it a common thing to have two pumps in any water cooled system? I mean, one that has only one radiator?

The second pump is for redundancy. They both run in series but it only needs one to be fully operational.

 

[VulgarDisplay]

Why would you need a custom block? That would seem like a waste of money vs just adding a second Rad.

To water cool the ram and vrms which would allow much higher over clocking.

 

[Keysplayr]

The second pump is for redundancy. They both run in series but it only needs one to be fully operational.

Is it a common thing to have two pumps in any water cooled system? I mean, one that has only one radiator?

 

[rgallant]

I have 2
you can run them at low speeds or both med. and get lots of flow which could help the 1 rad , but with 1 rad surely temps of the fluid will hit it's max. temps and pressure. I'd want 6-9 times that rad space.

 

[Gloomy]

6x120mm-9x120mm? WTF are you people cooling? D:

 

[2is]

The video was pure [redacted]. Silver lining is that it only has 8k views. AMD should take it down ASAP.

Profanity isn't allowed in the technical forums.
-- stahlhart

 

[Keysplayr]

There were pictures of it exposed on chiphell but they are gone now. I would imagine that the two pumps are for redundancy. If one fails the loop will still work.

I think if one pump fails, it would therefore obstruct waterflow for the other pump. I don't see how water would pass freely across the impellers of a dead pump.

 

[DigDog]

you'll need one of these

 

[TreVader]

I think if one pump fails, it would therefore obstruct waterflow for the other pump. I don't see how water would pass freely across the impellers of a dead pump.

I think you don't know how pumps work.



When one breaks it doesn't interrupt water flow, but it will lower the flow head. Pumps in parallel increase flow, pumps in series increase head. But nice try!

 

[Keysplayr]

I think you don't know how pumps work.



When one breaks it doesn't interrupt water flow, but it will lower the flow head. Pumps in parallel increase flow, pumps in series increase head. But nice try!

What do you mean "Nice Try" ? What am I trying to do but understand the setup?

And what difference does it make whether the waterflow, or the "pump head" is lowered? Won't there STILL be less water flowing regardless? Sheesh.

P.S. and if you answer no, I'd like you to offer some proof of this please. I'm ready.

What you gave me up above was sounding like a google search answer.

 

[VulgarDisplay]

What do you mean "Nice Try" ? What am I trying to do but understand the setup?

And what difference does it make whether the waterflow, or the "pump head" is lowered? Won't there STILL be less water flowing regardless? Sheesh.

P.S. and if you answer no, I'd like you to offer some proof of this please. I'm ready.

What you gave me up above was sounding like a google search answer.

Martin's Liquid lab is like the bible of water cooling. Their testing shows that you lose maybe 2% pumping performance if one pump quits in a loop that is in series.

http://martinsliquidlab.org/2011/04/26/pump-setup-series-vs-parallel/2/

Ok, so how does series handle the loss of one pump you might ask? Obviously you lose the power of the additional pump, but I wanted to see what happens to the remaining pump. Many forum members have suggested that a pump is highly restrictive when stopped and imply that performance in the remaining pump is degraded heavily…is it true?

No.

While you do lose the power of the second pump that was turned off, the restriction of the still pump is is very small. On average you will only see about a 2% loss in pumping power vs. a single pump setup. Series setups retain nearly full pumping power of single pump setup and therefore pass the redundancy check with flying colors. Not only do you get adequate redundancy, you pretty much get full single pump setup power. No problem…

 

[KingFatty]

Well now I'm pumped up about all this.

My brother hooked up his closed loop to a heat exchanger with a separate closed loop to his outdoor pool. GPU-water heater for the pool.

 

[Keysplayr]

Martin's Liquid lab is like the bible of water cooling. Their testing shows that you lose maybe 2% pumping performance if one pump quits in a loop that is in series.

http://martinsliquidlab.org/2011/04/26/pump-setup-series-vs-parallel/2/

Thank you, this is excellent. Now does this apply to all types of pumps? Reading further.

 

[VulgarDisplay]

Thank you, this is excellent. Now does this apply to all types of pumps? Reading further.

It should because they all operate using basically the same principles.

 

[96Firebird]

Is that for a seized pump, or a pump that is just turned off and is free to rotate? Centrifugal pumps do have free space outside of the vanes, but I can't imagine it is only a 2% loss for a seized pump.

 

[Keysplayr]

Is that for a seized pump, or a pump that is just turned off and is free to rotate? Centrifugal pumps do have free space outside of the vanes, but I can't imagine it is only a 2% loss for a seized pump.

Logical thinking would tend to agree with you, but maybe they're designed to let water pass through when they fail.

 

[KingFatty]

The water pumps I've seen have the ability pass a flow even when the impeller is stopped, because of the related and flipside benefit: if you block the inlet or outlet tubes, the impeller may still spin and move the water around in the pump housing, without breaking. So I think the two aspects are related when it comes to water pumps. You can stop the motor and water is still able to flow freely over the impeller, or you can clog/block the flow and the impeller is still able to freely spin without overloading. I think it's different than other types of fluid pumps, like a gear-based oil pump where there isn't that ability to free-spin or free-flow when things are messed up.