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[Guru3D]Sapphire Radeon RX 480 Nitro - Page 78

post #771 of 860
Quote:
Originally Posted by Shatun-Bear View Post

HEXUS review just in of the 480 Strix.

According to them, the 480 Strix draws 'only' 48W more than the 1060 Strix. Which is hardly the efficiency disaster some are trying to make out.



http://hexus.net/tech/reviews/graphics/94945-asus-rog-strix-radeon-rx-480-oc/?page=13

Dude stop trolling you obviously chopped the graph. This is the real deal:



As you can see, the 480 Strix even gets 1 FPS more than the 1060 Strix when it's idling, so it beats it even in 2D desktop purrforemince!!
post #772 of 860
Quote:
Originally Posted by ChevChelios View Post

48W more power for the same or less performance is certainly an "efficiency disaster" for Polaris10 itself, especially when its 14nm and 1060 is 16nm

but of course it nothing for a good PSU

Not really. Sure, at those clocks and at that performance tier, the Polaris GPU isn't close to Pascal in terms of efficiency. But people keep forgetting Polaris was designed for lower-power and mobile primarily. In terms of efficiency, scaled down (although we should say the 480 is actually Polaris 'scaled up' to be more accurate, almost beyond where it is comfortable) for the 470 and 460, I think you'll find the GPU will be much closer to Pascal's 1050 in power - performance.
post #773 of 860
Quote:
Originally Posted by magnek View Post

Dude stop trolling you obviously chopped the graph. This is the real deal:



As you can see, the 480 Strix even gets 1 FPS more than the 1060 Strix when it's idling, so it beats it even in 2D desktop purrforemince!!

Purrfore....mince?!?!? tongue.gif
post #774 of 860
Quote:
and Now you think Polaris with 14nm should be reached at Pascal Level?!
well, if the GCN/Polaris arch was more efficient then it could have at least come close

Quote:
this doesn't mean It can reach Pascal level
.. whic means they are pretty behind Nvidia in this aspect, not just in Polaris, but in everything

perhaps disaster was too strong a word tongue.gif
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post #775 of 860
Quote:
Originally Posted by Shatun-Bear View Post

Not really. Sure, at those clocks and at that performance tier, the Polaris GPU isn't close to Pascal in terms of efficiency. But people keep forgetting Polaris was designed for lower-power and mobile primarily. In terms of efficiency, scaled down (although we should say the 480 is actually Polaris 'scaled up' to be more accurate, almost beyond where it is comfortable) for the 470 and 460, I think you'll find the GPU will be much closer to Pascal's 1050 in power - performance.

Not sure I see that happening. 1050 will have plenty of headroom to scale because of how high Pascal clocks. Shouldn't be hard to figure out where the 460 will fall in terms of power/performance. Even the 950 could run off of the PCIe slot and overclock fine, which blows away anything AMD would have been able to do at that power limit. GCN is just power hungry.
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post #776 of 860
Nitro OC+ review up on KitGuru.

I've swung back to the opinion that that card is the one to get out of the customs. Seems ahead by more than just a bit of the 480 Strix but consumes more power.

Again KG found AMD's WattMan to be buggy when overclocking and curiously, the software didn't seem to be adding any voltage despite adjusting the setting. Real balls-up for AMD as a lot of reviewers are doing tests with WattMan and coming to the conclusion 3% overclocks are the max...how they haven't managed to sort that out by now is shocking really.

In any case, KG managed 1390Mhz on the 8GB Nitro:
Quote:
Originally Posted by KitGuru 
If you have another £50 to spend then the Sapphire RX 480 Nitro+ OC 8GB delivers better frame rates and we managed to get it stable to 1,390mhz in AMD’s Wattman. As I detailed earlier in the review I don’t feel Wattman is a great software package. Voltage increases didn’t seem to work on the Sapphire cards either so I am confident that when Sapphire release TriXX 3.0 better results will be possible.
We had to deal with another little glitch, also mentioned in our review of the Asus RX480 earlier this week. Target temperature settings would switch on start up from 65c to 75c, and then vice versa. Sapphire are aware of this issue and it has already been reported to AMD. We managed to test both cards at the correct setting of 75c and the fans are nonintrusive, with merely more than a faint whirr audible under load. In a similar fashion to leading cards from all the major manufacturers, the fans switch off at idle, and below a certain temperature threshold.
Right now the best RX 480 available is the Sapphire 8GB Nitro+ OC model. It is not only faster out of the box than the Asus RX 480 Strix OC model we reviewed earlier this week, but it is quieter and £40 less expensive. Below £250 makes more sense to me in today’s highly competitive market.
Quote:
Both 4GB and 8GB Sapphire RX 480 Nitro+ OC cards are the best available today at their respective price points. The build quality of the cards is exceptional.

http://www.kitguru.net/components/graphic-cards/zardon/sapphire-rx-480-nitro-oc-4gb-8gb-review/32/
post #777 of 860
amd will probably never match the efficiency of nvidia for one reason, hardware scheduler.

ever since keplar, nvidia ditched the hardware scheduler for the sole purpose of reducing power consumption. it was one of the biggest reasons why keplar brought pretty deep power consumption cuts over fermi. maxwell further this by removing more scheduling off the gpu to software.

yes overall architecture matters a lot, but hardware schedulers do increase power consumption and thus heat. if nvidia kept using a hardware scheduler their tdp would be higher and probably closer to amd's.
Edited by orlfman - 7/27/16 at 2:15pm
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post #778 of 860
Quote:
Originally Posted by Horsemama1956 View Post

Not sure I see that happening. 1050 will have plenty of headroom to scale because of how high Pascal clocks. Shouldn't be hard to figure out where the 460 will fall in terms of power/performance. Even the 950 could run off of the PCIe slot and overclock fine, which blows away anything AMD would have been able to do at that power limit. GCN is just power hungry.

I'm not necessarily saying Polaris will match Pascal at these low performance tiers. But we do know that the 1060 is less efficient than the 1070/1080 whilst Polaris is the opposite. Clocked at 800-1000Mhz (460/470) is the sweet-spot in terms of efficiency for that GPU.

Will be very interesting how close they can get.
post #779 of 860
Another review looks like the nitro throttles from its boost

he try everything Overclock was not stable.

I had high expectation from sappphire but this is disappointing.
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post #780 of 860
Another review showing this Nitro needing some crazy 2300 RPM to stay below 80C. Just horrible. My Fury Nitro stays at 52C if I set such crazy high fan speed. I am getting 77C at 800 RPM. Sapphire just failed so bad with this 480.
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