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[Kitguru] Sapphire RX 480 Nitro+ OC 4GB & 8GB Review (with benchmarks)

post #1 of 226
Thread Starter 
http://www.kitguru.net/components/graphic-cards/zardon/sapphire-rx-480-nitro-oc-4gb-8gb-review/
Quote:
We supplement our analysis of AMD partner RX 480 cards today by looking at the two Sapphire Nitro+ OC models, in 4GB and 8GB capacities. The Sapphire cards ship with custom cooling solutions, out of the box clock enhancements, LED lighting and PCB improvements.

post #2 of 226
That's disappointing.
post #3 of 226
In Computerbase.de review the 8GB card reached 1355MHz maximum OC (13MHz above stock). Also quite interesting that Sapphire uses six phase GPU VRM on the 4GB card and five phase on the 8GB card. Makes no difference thou, since the components are extremely high quality. They could do the same with three phases without any issues.
post #4 of 226
So the takeaway is that the RX 480 isn't the sleeper beast that people wanted it to be... That really kinda sucks. I wanted team red to knock this one out of the park with custom cards. frown.gif
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post #5 of 226
Quote:
Originally Posted by Mad Pistol View Post

So the takeaway is that the RX 480 isn't the sleeper beast that people wanted it to be... That really kinda sucks. I wanted team red to knock this one out of the park with custom cards. frown.gif

everyone was saying overclockers dream (yet again) with aib cards. asus strix card even with almost 20 degrees cooler temp only managed 3% increase in performance. dissapointing.
post #6 of 226
Quote:
Originally Posted by jprovido View Post

everyone was saying overclockers dream (yet again)

Not everyone. Some people had been saying for 1.5 years that the manufacturing process Polaris and Zen will be using is no good for high performance products wink.gif
post #7 of 226
Quote:
Originally Posted by The Stilt View Post

Not everyone. Some people had been saying for 1.5 years that the manufacturing process Polaris and Zen will be using is no good for high performance products wink.gif

It's the same story for Nvidia's Pascal cards, too. The overclocking is abysmal.

My take away is that the new Finfet processes have a sweet-spot to their frequencies, and anything beyond that will degrade, fast.
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post #8 of 226
Quote:
Originally Posted by Mad Pistol View Post

It's the same story for Nvidia's Pascal cards, too. The overclocking is abysmal.

My take away is that the new Finfet processes have a sweet-spot to their frequencies, and anything beyond that will degrade, fast.

Abysmal? Ridiculous. Its no Maxwell but Boost 3.0 does a better job of reaching the limits of the individual cards and 10%-15% gains with manual overclocking are not uncommon for Pascal.
post #9 of 226
Quote:
Originally Posted by Mad Pistol View Post

It's the same story for Nvidia's Pascal cards, too. The overclocking is abysmal.

My take away is that the new Finfet processes have a sweet-spot to their frequencies, and anything beyond that will degrade, fast.

GP104 is 35% larger than Polaris 10 and yet clocked 50% higher. On top of that, on average it has ~10% overclocking margin at default voltages. Considering the 50% higher default clocks, I wouldn't call it's frequency capabilities as abysmal by any means. The two architectures are obviously very different, but the low frequencies are no direct consequence of GCN4 architecture. The changes in GCN4 architecture wise are quite minimal. And yet GCN2 based Bonaire on 28nm bulk process can match or exceed the clocks of Polaris 10.

FinFets indeed do have a narrow "sweet spot" and Polaris 10 missed it by a large margin (> 266MHz).

post #10 of 226
Quote:
Originally Posted by jprovido View Post

everyone was saying overclockers dream (yet again) with aib cards. asus strix card even with almost 20 degrees cooler temp only managed 3% increase in performance. dissapointing.

Technically a nightmare is also a dream, so they were right.
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