First Thoughts

Bringing our first look at AMD’s new architecture to a close, it’s exciting to see the field shape up for the FinFET generation. After over four years since the last great node transition, we once again are making a very welcome jump to a new manufacturing process, bringing us AMD’s Polaris.

AMD learned a lot from the 28nm generation – and more often than not the hard way – and they have put those lessons to good use in Polaris. Polaris’s power efficiency has been greatly increased thanks to a combination of GlobalFoundries 14nm FinFET process and AMD’s own design choices, and as a result, compared to AMD’s last-generation parts, Polaris makes significant strides where it needs to. And this goes not just for energy efficiency, but overall performance/resource efficiency as well.

Because AMD is launching with a mainstream part first they don’t get to claim to be charting any new territory on absolute performance. But by being the first vendor to address the mainstream market with a FinFET-based GPU, AMD gets the honor of redefining the price, performance, and power expectations of this market. And the end result is better performance – sometimes remarkably so – for this high volume market.

Relative to last-generation mainstream cards like the GTX 960 or the Radeon R9 380, with the Radeon RX 480 we’re looking at performance gains anywhere between 45% and 70%, depending on the card, the games, and the memory configuration. As the mainstream market was last refreshed less than 18 months ago, the RX 480 generally isn’t enough to justify an upgrade. However if we extend the window out to cards 2+ years old to things like the Radeon R9 280 and GeForce GTX 760, then we have a generational update and then-some. AMD Pitcairn users (Radeon HD 7800, R9 270) should be especially pleased with the progress AMD has made from one mainstream GPU to the next.

Looking at the overall performance picture, averaged across all of our games, the RX 480 lands a couple of percent ahead of NVIDIA’s popular GTX 970, and similarly ahead of AMD’s own Radeon R9 390, which is consistent with our performance expectations based on AMD’s earlier hints. RX 480 can't touch GTX 1070, which is some 50% faster, but then it's 67% more expensive as well.

Given the 970/390 similarities, from a price perspective this means that 970/390 performance has come down by around $90 since these cards were launched, from $329 to $239 for the more powerful RX 480 8GB, or $199 when it comes to 4GB cards. In the case of the AMD card power consumption is also down immensely as well, in essence offering Hawaii-like performance at around half of the power. However against the GTX 970 power consumption is a bit more of a mixed bag – power consumption is closer than I would have expected under Crysis 3 –  and this is something to further address in our full review.

Finally, when it comes to the two different memory capacities of the RX 480, for the moment I’m leaning strongly towards the 8GB card. Though the $40 price increase represents a 20% price premium, history has shown that when mainstream cards launch at multiple capacities, the smaller capacity cards tend to struggle far sooner than their larger counterparts. In that respect the 8GB RX 480 is far more likely to remain useful a couple of years down the road, making it a better long-term investment.

Wrapping things up then, today’s launch of the Radeon RX 480 puts AMD in a good position. They have the mainstream market to themselves, and RX 480 is a strong showing for their new Polaris architecture. AMD will have to fend off NVIDIA at some point, but for now they can sit back and enjoy another successful launch.

Meanwhile we’ll be back in a few days with our full review of the RX 480, so be sure to stay tuned.

Power, Temperature, & Noise
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  • basroil - Thursday, June 30, 2016 - link

    "Or both the mobo and the PSU are supplying the same voltage and the power input is combined into a single bus... y'know... preventing the unlikely scenario you describe from ever possibly happening."

    1) The two do NOT have the same voltage. Ideally they do but that's not how things actually work in practice.
    2) The folks at tomshardware did bus level analysis of power draws and put their results into their review. Their tests for various cards will prove to you that power draw can indeed be modified to either PCIe slot or power cable and is not 50-50 like you claim.
    3) Even assuming that your point was valid (which it most certainly is NOT), it wouldn't change the fact that a single card already draws more power from the PCIe slot than allowable by ATX specifications, and that two cards will be far more than the specs allow (double the spec for PCIe3.0)
    Reply
  • schulmaster - Thursday, June 30, 2016 - link

    Lol. The PSU is the source for all board power AND PCIE Aux. The board design and PSU will negotiate how much 12V power is reliably sourced from the 24pin. A 6pin PCIe aux is rated for an additional 75W, and that limit could be down to the cable itself, let alone the card interface and/or the PSU. Even high-end OC boards have a supplemental molex connector for multi GPU configs to supplement available bus power, which is the burden of the 24pin. It is not outlandish to have concern if a single RX480 is overdrawing from the entire PCIe bus wattage allotted in the spec, especially when the fall back is a PCIe 6 pin already being overdrawn from as well. Tomshardware was literally unwilling to due further multiGPU testing due to the numbers they were physically seeing, not paranoia. Reply
  • pats1111 - Thursday, June 30, 2016 - link

    @binarydissonance: Don't confuse these fanboys with the facts, they're NVIDIA goons, it's a waste of time because they are TROLLS Reply
  • AbbieHoffman - Wednesday, June 29, 2016 - link

    Actually most motherboards support crossfire. There are many that support only crossfire. Because it is cheaper to make crossfire support than SLI. Reply
  • Gigaplex - Thursday, June 30, 2016 - link

    But they don't support the excessive power consumption on the PCIe bus, which is a specification violation. Reply
  • jospoortvliet - Monday, July 4, 2016 - link

    Luckily every motherboard except for cheap ones that are quite old can handle easily 100+ watt over the PCIe port, as any over clocking would need that, too. Reply
  • beck2050 - Thursday, June 30, 2016 - link

    I just laugh when I see people talking about Crossfire Reply
  • fanofanand - Thursday, June 30, 2016 - link

    "when even 2x1080 wouldn't hit 75W"

    Your post is so full of FUD it should be deleted.
    Reply
  • basroil - Thursday, June 30, 2016 - link

    "Your post is so full of FUD it should be deleted. "

    I'm not responsible for your ignorance. Check tomshardware /reviews/nvidia-geforce-gtx-1080-pascal,4572-10.html and you'll see I'm right
    Reply
  • fanofanand - Thursday, June 30, 2016 - link

    I checked, you are wrong. Stop spreading FUD, you Nvidiot. Reply

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