you mean the fins attached to the heatpipes? looks like it yeah. but quite similar still, why design when you can copy?
NVIDIA GF100 & Friends speculation
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you mean the fins attached to the heatpipes? looks like it yeah. but quite similar still, why design when you can copy?
The GTX 460 would be a nice example.
My GTX 460, when OCed at 850Mhz/1.087V, hence possibly reaching 200W power consumption, increases my CPU's gaming load 7C or more. Never had this problem with a reference 5850 @1Ghz on the same case.
The system's stability has not been compromised of course, but I am not sure what would happen if you added a second GTX 460 on the same case.
On the other hand, I have moved my 5850 to my primary rig and added a second 5850 as well. They are both reference and matter what I do, the case temp stays the same and the CPU is pretty cool.
Well, if you look at the central part, they're rotated the other direction. The rest of the similarities are constrained by the geometry of the situation, however, so you can't expect them to be any more different than that. The fins attached to the heatpipes are also completely different.
So basically, given the overall layout, you can't get two designs more different than this. Maybe they copied the overall layout, I suppose, but that's it.
I may be a bit late to the discussion regarding power usage but one of the interesting things I find missing in these comparisons is multi-display power usage.
For example how the GF100 exit from the lower power state when a second display is connected, from 50Mhz core / 68Mhz ram to 405Mhz core / 924Mhz, which in return means an idle power increase from 184 Watt to 264 Watt (over 30% increase in power usage) just by adding a second display (judging by these numbers from Legit Reviews).
It especially makes sense to test this at the lower end as this is, most likely, the ones used by the majority of users with a multi-display setup.
For example how the GF100 exit from the lower power state when a second display is connected, from 50Mhz core / 68Mhz ram to 405Mhz core / 924Mhz, which in return means an idle power increase from 184 Watt to 264 Watt (over 30% increase in power usage) just by adding a second display (judging by these numbers from Legit Reviews).
It especially makes sense to test this at the lower end as this is, most likely, the ones used by the majority of users with a multi-display setup.
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Found an older pic which has the same fin attachment as the 460 cooler:
So only the fins are rotated in another direction.
From a cooling perspektive, it makes more sense to have fan blades and fins rotated in contrary directions, from a noise perspective, it'll be more efficient to have some both aligned.
Look here:
http://www.pcgameshardware.de/aid,7...ctX-11-fuer-130-Euro/Grafikkarte/Test/?page=2
Look here:
http://www.pcgameshardware.de/aid,7...ctX-11-fuer-130-Euro/Grafikkarte/Test/?page=2
GF106 adds only 5W. Seems, that GDDR5 undervolting helps to keep power consumption at low levels. Here are some results (scroll down, the numbers represent power consumption gain after connecting the second LCD): http://www.diit.cz/clanek/test-gefo...lone-narust-spotreby-s-druhym-lcd/36953/34702
More similar, but the relative sizes of the components are quite different.Found an older pic which has the same fin attachment as the 460 cooler:
So only the fins are rotated in another direction.
Wat does that have to do with the fact that all of the reference coolers on GTS 450 upwards are of the exhaust type?
And I hope you're not serious about calling it a 'problem' when your overclock/overvolt raises temperature.
No-X was wondering what good is a cooler which exhausts all hot air inside the case.
You asked which cooler would that be and I answered that such a cooler is the GTX 460's. Same goes for GTS 450. Am I missing something here?
As for the overclock, I specifically mentioned two different cards with different coolers and my experience with them both overclocked. 460 heats the system up, 5850 does not. If they were at stock, it would just make the heating up of the 460 lower but still apparent. If you use two stock 460s 1GB inside a case, you still get 320W worth of heat exhaust on the rest of the components. That is why no-x asked what good is such a cooler.
They aren't. Barely 50% of the heat is exhausted. The rest is blown on hard-drive and other components.
I think this is a reference Nvidia design no?
Seems the same as my Gainward GS. From my unboxing video (@3.35 and later), I have made a round with the camera to film all aspects of the card.
It is holy all around. Since the fan blows air vertically to the PCB, that means that the same amount of air gets blown away in all directions right? So if I am not mistaken, only 25% is blown out of the exhaust bracket.
So 75% stays inside the case and leaves the cooling job to your case, no?
Leaving the hot air inside the case isn't a problem for lower-power designs. I don't think the power consumption of the GTS 450 is at the level required to vent the hot air outside the case directly.
For the higher power designs, again, as long as a large fraction of the heat is exhausted, it isn't much of an issue.
For the higher power designs, again, as long as a large fraction of the heat is exhausted, it isn't much of an issue.
I would think so, seeing as the reference cooler designs have a shroud and an exhaust.
Well obviously such a cooler would still serve a useful purpose in keeping your videocard working. But seeing as these reference cards do have exhausts, the question does not apply to them in the first place.
No, 2 stock 460s would not exhaust anywhere near 320W inside your case.
Uhh well yeah, they are. And you seem to be aware of this now, considering that your statement just went from 'all the hot air' to 'the rest', which you further defined as somewhat less than 50%.
I have no idea what's your point, but just in case my formulation wasn't comprehensible, I'll try explain it in a better way.
nVidia's reference cooler exhausts only fraction of the air outside the case. Rest of the heat stays in and the card exhausts it all by a vent directed to the place, where is typically installed hard-drive (according to hard drive manufacturers, critical temperature is usually set between 59°C and 69°C - which is about 50°C lower, than critical temperatures for GPUs and CPUs)
Cooling solution, which warms up one of the most heat-sensitive component, can hardly be "so much better", than a solution, which exhaust all the heat outside (or for some models - majority of the heat goes outside, while the rest is directed on side-plate).
nVidia's reference cooler exhausts only fraction of the air outside the case. Rest of the heat stays in and the card exhausts it all by a vent directed to the place, where is typically installed hard-drive (according to hard drive manufacturers, critical temperature is usually set between 59°C and 69°C - which is about 50°C lower, than critical temperatures for GPUs and CPUs)
Cooling solution, which warms up one of the most heat-sensitive component, can hardly be "so much better", than a solution, which exhaust all the heat outside (or for some models - majority of the heat goes outside, while the rest is directed on side-plate).
There is no solution which exhausts all of the heat outside the case. This is not possible. There are definitely arguments to be had on the merits of one cooling system or another, but please don't try to claim that there are cooling solutions that genuinely exhaust all of the heat outside the case.
I think we all know he means all of the airflow heat, which is moving the vast majority of heat produced.
I'm not so sure it's that simple. It would require some empirical work to see for sure.
One could, for instance, measure the case temperature after some minutes of heavy CPU work with the graphics card idle, and compare that against the case temperature after some minutes of heavy GPU+CPU work. If it were accurate that nearly all of the heat was exhausted in these designs, there would be no difference. If this is a legitimate concern, then there would, however, be a large difference for designs that vent some of the air back into the case.
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