I'm just wondering how long it'll take for an AIB to make a mITX GTX 980 and give the Nano a run for its money and power efficiency.
well this is suggested retail price, so its not the market that is driving up the price.
err the oc 970 miTX gets pretty close to a stock nano
I don't think this card will drop in price, only way is if demand isn't there and stock piles up.
well if you want to that, I think the 970 with a water cooler can run circles around the nano with a water cooler. Have you seen the the 970 with water cooling it reaches 1500+ mhz.
http://www.modders-inc.com/bitspower-msi-gtx-970-full-cover-waterblock-review/5/
That article forgot about binning. There's a wide variation in perf/watt between individual chips because of semiconductor manufacturing. AMD told us they binned the Nano for best perf/w. TitanX, on the other hand, is not just golden samples.Damien compared GM200 to Fiji at 185W: http://www.hardware.fr/articles/942-23/fiji-vs-gm200-185w.html
GM200 comes out ahead, but not by as much as you'd think. I wonder whether it's because Fiji was pushed far beyond its optimal operating frequency in the Fury X, or because AMD's DVFS is better than NVIDIA's at minimizing power and maximizing performance in tightly constrained power budgets.
What does that do to fan noise though? That's a tiny cooler for a huge GPU...For what i have see, its absolutely not a problem to get it running at 1070mhz ( simply adjust the slider in the Catalyst driver ), and you have basically the full FuryX performance.
That article forgot about binning. There's a wide variation in perf/watt between individual chips because of semiconductor manufacturing. AMD told us they binned the Nano for best perf/w. TitanX, on the other hand, is not just golden samples.
A better comparison would be Fury (standard) at 185 W and 980Ti at 185 W.
What does that do to fan noise though? That's a tiny cooler for a huge GPU...
Bear in mind that Fury X is running 65C by virtue of the water cooling, while Nano is running ~75C. The temperature difference directly translates to power.
I actually tried that in my usual testing (1h heavy gaming-like load inside a case). I just pushed the power limit to the max (+50%) without overclocking but that wouldn't make any difference as I hit the power limit (~280W instead of 185W and average clock of 907 MHz instead of 849 MHz). GPU temp went up from 74°C to 79°C, fan speed up from 2400 to 2765 RPM and noise up from 33.2 dBA to 40.5 dBA which is still much lower than for the reference R9 290X even in "Quiet" mode. So it gets noisy but not so terrible as one might have feared. My concern was more about the VRM temperature but no big issue for such components according to thermal imaging (91 to 101°C). I wouldn't push the power limit if the board is inside a mini-PC lacking proper cooling though.What does that do to fan noise though? That's a tiny cooler for a huge GPU...
The thermal mass on Nano is actually not too dissimilar from a blower solution for a ~300W solution by virtue of the fact that a lot of the length on those boards is taken by the blower itself. If I look at a W9100 that I happen to have on my desk, the finned portion of the thermal mass is 5.7", where the Nano is ~5.2"; the fins on the Nano have a cut out for the Axial fan, but the loss isn't that great there as the fins on the blower don't reach the full dual height anyway due to the shroud and the gap for running multiple cards. The vapour chamber element is smaller on the Nano, but that is augmented by the heatpipes.What does that do to fan noise though? That's a tiny cooler for a huge GPU...
The thermal mass on Nano is actually not too dissimilar from a blower solution for a ~300W solution by virtue of the fact that a lot of the length on those boards is taken by the blower itself. If I look at a W9100 that I happen to have on my desk, the finned portion of the thermal mass is 5.7", where the Nano is ~5.2"; the fins on the Nano have a cut out for the Axial fan, but the loss isn't that great there as the fins on the blower don't reach the full dual height anyway due to the shroud and the gap for running multiple cards. The vapour chamber element is smaller on the Nano, but that is augmented by the heatpipes.
Guys, we could maybe made a separate thread about why some reviewers ( i know only 2 sites ) have not got a sample for review, because it completely remove all discussion about the Nano so far...
It seems that GCN's power consumption problems are all due to texturing.
Look at the performance of Nano in the 3DMark Vantage Texel fillrate test:
http://anandtech.com/show/9621/the-amd-radeon-r9-nano-review/14
At nominal 1GHz, Nano scores 177GT/s. At nominal 1050MHz, Fury X scores 229.9GT/s. But Nano should be scoring 219GT/s.
177GT/s has to be the result of power throttling. It implies 808MHz.
So, what we need now is the same test but with the power limit of the card increased.
Two further data-points for non-power-limited cards:
Fury has 224 texture units at 1GHz, which is 83.3% of Fury X. 83.3% of 229.9 = 191.6GT/s. Tested result is 193.1.
390X has 68.75% of the theoretical texture rate = 158.1 GT/s. Tested result is 161.5GT/s.
Obviously all of these test results are lower than the pure theoretical numbers (e.g. 268.8GT/s on Fury X), which is why some of the slower cards show slightly faster results. But Nano's result is clearly much further from theoretical than all the other cards.
By contrast, pixel fillrate doesn't show any power-throttling effect on Nano.