Overclocking

Finally, no review of a high-end video card would be complete without a look at overclocking performance.

Of all of the Fiji cards overclocking the R9 Nano is perhaps the easiest and certainly the most unusual. Due to the fact that the card is essentially a 1000MHz Fiji card with a heavy power throttle, the card is already validated for clockspeeds that under load it doesn’t have the available power to reach. As a result while one can crank up the clockspeeds, the card isn’t going to move until you increase the power limit. And even then you are more likely to hit the power cap again than you are to break 1000MHz sustained. So overclocking the GPU is something of an academic affair.

Radeon R9 Fury/Nano Series Overclocking
  Ref. R9 Fury X ASUS R9 Fury Ref. R9 Nano
Boost Clock 1125MHz 1075MHz 1075MHz
Memory Clock 1Gbps (500MHz DDR) 1.1Gbps (550MHz DDR) 1.1Gbps (550MHz DDR)
Power Limit 100% 115% 135%
Max Voltage 1.212v 1.169v 1.2v

Overall we were able to overclock our sample to 1075MHz on the GPU and 550MHz (1.1Gbps) on the memory. However load clockspeeds were almost always under 1000MHz even with a generous 35% increase in the power target. Overdrive does allow for a larger increase – up to 50% – but with the R9 Nano featuring a less robust power delivery system designed to push less power than R9 Fury or R9 Fury X, we’re hesitant to increase the limit further without a better idea of what the card can safely sustain for extended periods of time.

OC: Battlefield 4 - 3840x2160 - Ultra Quality - 0x MSAA

The overall performance gains from overclocking aren’t huge, but at 7-10% they also aren’t too shabby. However since higher clockspeeds quickly ramp up the power requirements due to the higher voltages required, the performance gains won’t be anywhere near the 35% increase in the power limit, despite that we are in fact still power limited.

Meanwhile the 35% increase in the power limit has a definite knock-on effect on the cooling system. The R9 Nano’s cooler is able to keep up with the additional load, holding temperatures to 74C, but noise levels are now over 51dB(A). Power consumption at the wall is similarly affected, with the R9 Nano essentially giving up all of its energy efficiency gains in the process.

Power, Temperature, & Noise Final Words
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  • ImSpartacus - Thursday, September 10, 2015 - link

    Good to see that Anandtech got a Nano.
  • Wreckage - Thursday, September 10, 2015 - link

    I'm sure they agreed to give a "fair" review. I think everyone should wait for independent reviews after the whole Roy Taylor incident.
  • HOOfan 1 - Thursday, September 10, 2015 - link

    I bet AMD knew the numbers would be exactly the same at all the big name sites. It is the conclusions they were worried about.
  • close - Thursday, September 10, 2015 - link

    Wreckage, you would say that of course after being "motivated" by no less then two 980 graphic cards as gifts just in the last 6 weeks. What kind of credibility do you expect after this?
  • theduckofdeath - Saturday, September 12, 2015 - link

    New review on a hardware review site, comment section full of bitching.
    Yeah, this is the tech news of 2015. Whining and trolling instead of discussing tech.
  • LoganPowell - Friday, November 27, 2015 - link

    It's too bad that the AMD Radeon r9 Nano does so bad among consumer based rankings (see http://www.consumerrunner.com/top-10-best-hard-dri... for example...)
  • theNiZer - Thursday, September 10, 2015 - link

    Spot on mate! (sry for double posting)
  • gw74 - Thursday, September 10, 2015 - link

    The R9 Nano was about to make me interested in AMD cards finally. On finding out about what they've been up to denying review copies to certain outlets, I am now not interested any more and they are dead to me as a brand.
  • silverblue - Thursday, September 10, 2015 - link

    Roy apologised to Scott Wasson and said that he didn't consider The Tech Report as an unfair site, however the reason for their exclusion still hasn't been made known. I suspect he got confused between TechPowerUp and TheTechReport. :)

    Still, excluding anybody, intentional or otherwise, does your reputation a world of hurt, and starts to provoke questions about those who were included. What a tangled web we weave.
  • milli - Thursday, September 10, 2015 - link

    I don't want to burst your bubble but Scott Wasson has been very pro nVidia for the past ten years. He's just very good at doing it very subliminally, so most won't even notice. As a long time TR reader, it has been pretty obvious to me.

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