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[Slashgear] PNY unveils new NVIDIA GTX 580 liquid cooled graphics card with CPU cooli - Page 10

post #91 of 98
AK is not impressed
So if you OC your CPU the GPU will actually run hotter than the stock air cooler right?
post #92 of 98
Quote:
Originally Posted by Asetek_Stu View Post
3. The radiator on the CPU/GPU loop is our 120mm DOUBLE THICK radiator. With two fans, it is more than capable of handle nearly 400W.
The definition of capable is purely subjective. Any rad with fans is capable of handling 400W if you don't care what the delta temperature is. Enthusiasts would probably classify capable as a 5C delta.


Source: http://skinneelabs.com/triple-radiator-comparison-v2/4/

That would suggest that 2500RPM fans would be needed on a 360 rad to keep a 5C delta @ 400W... So unless you have some insane fans on your 120, I don't see it happening. I don't mean to be critical, I just have lots of doubts about your figures. To my knowledge the generally accepted ratio was 150W per 120mm rad (and that is for thick rads). I would appreciate some clarification from you Stu, if you have the time
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post #93 of 98
Quote:
Originally Posted by CDub07 View Post
A GTX 580 isn't a enthusiast card. A 6990 or 590 is a enthusiast card. These cards really serve no purpose unless u have the proper setup(multi-montior Intel Core i7).
how is a 580 not an enthusiast card? just because they are not the "top" card in its line does not lessen it at all. IMHO i would go 580>590 any day because i like to overclock without my card dying
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post #94 of 98
I for one think it's a great idea, would love to have this in my system.

with a 95w CPU and the GTX 580, this thing would really be awesome.

A bit late to the the party though, since already got a GTX 580, a PNY too, would you take my PNY GTX 580 in part exchange?

Can you imagine this in a silverstone SG05/06, wow.
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post #95 of 98
Quote:
Originally Posted by Trikitty View Post
All sounds good... but why double thick radiator? It just seems like you're creating more resistance for the fans, which would just be inefficient. It would make more sense to be a 240mm so you have to option to add on more fans to overcome that resistance, especially when most cases DO have the potential of having 240mm rads placed.
Understood and that's something to consider. The benefit of the double thick radiator is keeping the 120mm form factor while still doubling fin area. You are correct that you will need a pair of decent fans to keep the CFM at an effective rate. But as proven by our other models that utilize the double thick radiator, this rad is capable of quite a bit.

Quote:
Originally Posted by VaporXtreme View Post
I must agree with most people here. Even though a cool idea i really dont know how this will hold up with OC. If you over clock the Gfx card that means the cooled water will run over the Gfx card and become warm which will run over the cpu. That means if u overclock the cpu you might have higher temps


sorry if im not writing clearly ive been up since 2 am
In fact, we designed the loop in reverse. The coolest liquid coming from the radiator goes to the CPU first, then the GPU.

Quote:
Originally Posted by bob808 View Post
I could see someone who already has a h70 cpu cooler picking up one of these gpu only kits and being proud of their watercooled rig!

Good idea if you ask me, and if PNY is going to stand behind it with a 5 year warranty then kudos to them! Judging from the video I watched, it runs cooler and quieter than the stock air only counterpart and allowed for better oc yealds.

Remember this is an air/water hybrid cooling solution (still has fan and shroud) so it wont be taxing the 120mm rad to its limits.

Good job PNY and not breaking the bank doing it (compared to cost of regular card)
Exactly, the fan has a role even though its spinning at a minimum.


Quote:
Originally Posted by L D4WG View Post
"The card has a fan as well and the liquid cooling system is for extra cooling. "

Extra cooling, not dedicated, seems fine to me for the average user who doesn't want to OC their CPU or GPU...
not quite see below

Quote:
Originally Posted by mynameisryan503 View Post
I completely agree with everyone on here...BUT I do feel the need to point out that the GPU will still be air cooled. It is in the loop merely for supplemental cooling at higher overclocks. At least that's the way I saw / read it.
see below

Quote:
Originally Posted by Carlos Hilgert Ferrari View Post
Lol... this is a total fail.

My Antec RAD with 2x 120mm can't even handle CPU, imagine a loop with GPU.
Keep in mind we are not cooling the ENTIRE card with liquid. Many of the hottest components are being cooled by the metal baseplate and slow moving stock blower. This means that the liquid is only taking heat from the GPU.


Quote:
Originally Posted by DrFPS View Post
Your the one who quoted 400 watts correct? Lets do the math shall we, who needs an engineer? Not me I can't even add and subtract.

A stock 580 according to Nvidia will use 244 watts of 12v current.
http://www.nvidia.com/object/product...tx-580-us.html

Graphics Card Power (W)244 W
I could claim this number is low. I don't own one so I don't know that is a fact. That being said we will have to believe Nvidia's science. It looks to me like you have gambled on it, shame.

i7 950 is a 130 watts. That put's you @374 watts just to turn it on. I'm not rude, I'm being REAL. How can you www.overclock.net that? w/26 watts I think not.
http://www.overclock.net/water-cooling/
Quote:
Originally Posted by Skripka View Post
Not that I disagree with your idea...but the Nvidia number is (electrical) power, and the Intel number you cite is maximum allowable TDP (heat) without TurboBoost.

With TurboBoost on, the i7-950 would be around 140W...and the Nvidia at stock would need to dissipate probably less than 244W of TDP, tho I'm guessing on that...In any case there is likely little or no spare thermal room presuming Asetek's 400W figure is accurate. Depends on how much good the air cooler on the GPU does.
Skripka is correct. So it would seem we do need an engineer. What you are looking at and doing math with are not the numbers that will lead you to any sort of a true answer. That being said it CAN lead to a ballpark. So...

#1 The heat map of a GPU and CPU are VERY different. Where a CPU has mostly centralized heat, a GPU has a very spread out heat. We use two different coldplates on each of these processors that are optimized for their different heat maps.

#2 We are not cooling the entire card as I said above. We are cooling ONLY the graphics processing unit which means all the heat from the hottest components (DIMMs, FETs, etc) is actually cooled by the metal baseplate and the blower on minimum. This makes the liquids job much easier and still allows for significant overclocking: see aforementioned video. This also means that we can't just take the TDP of the card as a significant portion of that is dissipated without the liquid cooler.

#3 NVIDIA has been involved in this project since day 1 so luckily there was no need for us to gamble. I tend to trust NVIDIA science simply because they seem to have done a pretty tremendous job at what they do. The engineers we have worked with at both PNY and NVIDIA are very impressed with both solutions.


Quote:
Originally Posted by AK-47 View Post
AK is not impressed
So if you OC your CPU the GPU will actually run hotter than the stock air cooler right?
Not even close. the stock air cooler runs the GPU at over 80C almost 90C when fully loaded. You would probably meet a max cpu overclock thermal ceiling before you would get the GPU up that hot.
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post #96 of 98
Quote:
Originally Posted by ryand View Post
The definition of capable is purely subjective. Any rad with fans is capable of handling 400W if you don't care what the delta temperature is. Enthusiasts would probably classify capable as a 5C delta.


Source: http://skinneelabs.com/triple-radiator-comparison-v2/4/

That would suggest that 2500RPM fans would be needed on a 360 rad to keep a 5C delta @ 400W... So unless you have some insane fans on your 120, I don't see it happening. I don't mean to be critical, I just have lots of doubts about your figures. To my knowledge the generally accepted ratio was 150W per 120mm rad (and that is for thick rads). I would appreciate some clarification from you Stu, if you have the time
No problem at all and thanks for bringing some real science to the discussion.

You are 100% absolutely correct.

There is no way we could maintain a 5C delta. In fact, that would be very impressive at 400W

As you stated, we are capable of handling 400W, but its a matter of what is acceptable to you. As you have revealed, the questions are as simple black and white as some would assume.

I would also argue that a CPU GPU combined loop with a single card isn't for guys that are looking to sustain overclocks that require that kind of delta. This gives you performance with reliability, a warranty and none of the stress.

Now if you were to put one of our coolers on your CPU and then buy the GPU only version. That has some power to it
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post #97 of 98
I wouldn't even recommend a 360 rad for cooling a CPU+GPU unless they were both idling 95% of the time. You can't actually be serious with this:


Why are you even benching with Furkmark? You obviously didn't disable OCP on the 580 so it's actually less of a strain on the system then CSS would be. Unigine Heaven is about the toughest without going the route of disabling OCP for Furmark/OCCT.
Edited by PoopaScoopa - 6/15/11 at 12:40pm
post #98 of 98
So basically, lets take a H50 and put it on a GPU, but wait!! forgot about the CPU...

This is not a good idea, I could see it not performing any better than a stock air cooler, besides I would rather put a Single slot GPU Block on it than to have a double slot water cooler
 
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