AMD RX 480 & RX 460 Polaris Specs & Performance Leaked

AMD's Polaris 10 to deliver R9 390X/390 horsepower at half the wattage for less than $299. Polaris 11 to be AMD's console killer GPU, delivering GeForce GTX 950 performance at only 50W. This is only the tip of the iceberg according to the latest leaks that have hit the web from multiple sources, so buckle up as we break AMD's Radeon 400 series down for you.

Let's start off with the leaked specifications which have been reported by VCZ & TPU. Both of which claim to have corroborated the information independently through their own industry sources. So it's very likely we're looking at the real deal here. Still, please remember to take this with a grain of salt.

AMD Polaris 10 Features 32 CUs & 5.5 TFLOPS

To Deliver R9 390X/390 Performance At Half The Wattage & Less Than $299

AMD's Polaris 10 GPU reportedly features a 256bit GDDR5/X memory interface & cards based on the chip will feature 8GB of memory. The GPU packs 32 GCN 4.0 compute units for a total of 2048 stream processors, the same number found in AMD's current R9 380X. However, Polaris 10 cards are reportedly significantly faster and will deliver R9 390X/390 class performance. Leaks also pit the MSRP at less than $299 at launch.

According to today's leak the GPU is rated at 5.5 TFLOPS, which is 0.1 TFLOPS shy of the 2816 SP R9 290X. An impressive feat considering the 290X is a ~290W card with 37.5% more GCN stream processors and a memory interface that's twice as wide. The card is also reportedly rated at less than 150W. According to a previous leak from Benchlife Polaris 10 graphics cards will be rated at around 110W-135W depending on the GPU configuration and clock speeds. Interestingly, according to VCZ this 5.5 TFLOP GPU is not even a desktop class chip but a mobility variant. This would bring R9 390X/390 class performance to notebooks.
We received the exact same specifications just few days ago. Although it was noted that those are specifications for mobile GPUs, so you may want to take this into consideration.

A 5.5 TFLOPS rating would put Polaris 10's GPU clock speed at around 1350Mhz, a whopping 39% increase over its predecessor the R9 380X. This is unsurprisingly thanks largely to the brand new FinFET manufacturing process which is capable of significantly higher clock speeds without sacrificing leakage. This as we've seen has also allowed Nvidia to boost clock speeds on its Pascal GPUs by a similar margin.

AMD Polaris 11 Features 14 CUs & 2.5 TFLOPS

To Deliver R9 270X Performance At Less Than A Third Of The Wattage

Polaris 11 on the other hand will feature 14 GCN 4.0 compute units for a total of 896 stream processors. The GPU features a 128bit GDDR5/X memory interface and Polaris 11 cards will feature 4GB of memory. The GPU is rated at 2.5 TFLOPS and a TDP that's less than 50 watts.

That's 0.5 TFLOPS north of the 110W R7 370 at less than half the wattage & exactly the same performance of the 180W R9 270X. According to the latest leak Polaris 11 will replace the Bonaire GPUs powering the R7 360 and 260 series cards but will outperform the larger Pitcairn powered 370 and 270 series cards. Again, according to VCZ this is also a mobility variant of Polaris 11 that will power thin gaming notebooks.

WCCFAMD Radeon RX 480AMD Radeon R9 380XAMD Radeon RX 470AMD Radeon RX 460
GPUPolaris 10 XTTonga XTPolaris 10 ProPolaris 11
Process Node14nm FinFET28nm14nm FinFET14nm FinFET
Compute Units3632TBATBA
GCN GenerationGCN 4.0GCN 3.0GCN 4.0GCN 4.0
Stream ProcessorsTBA2048TBATBA
Clock SpeedTBA970MhzTBATBA
Memory Bus256-bit256-bitTBATBA

Interestingly, entries for both Polaris 10 and Polaris 11 have been spotted several months ago on a number of benchmarking databases including SiSoftSandra & Compubench. The specifications reported by these databases are slightly different than what TPU & VCZ have reported. Polaris 10 is shown to have 4 more CUs and Polaris 11 is shown to have 2 more CUs than the specifications leaked by VCZ and TPU. Which could be the result of a misreading due to Polaris related driver & BIOS parameters that these databases aren't yet familiar with.

AMD Radeon 400 Series Polaris 10 & 11 GPUs Reportedly Coming At The End Of The Month - May 26-29

AMD's official statement is that Polaris will be coming out "mid 2016". Although earlier this month tech pubs in Asia reported receiving invites to a press conference hosted by AMD in which the company plans to announce its upcoming products at the end of the month. The event will reportedly take place between May 26-29 in Macau the "Las Vegas of Asia" as it's sometimes referred to. That's right before Computex where Polaris cards are said to be shown at the event.

There's certainly evidence to support this. AMD launched a landing page for Polaris in early May, so a product announcement is definitely nearing. The page includes teaser die shots of both the Polaris 10 and Polaris 11 GPUs. These die shots were thoroughly examined since then revealing that Polaris 10 is indeed around ~230mm² large as was previously thought. Making it roughly one third smaller than Nvidia's GP104 GPU powering the GTX 1080 and 1070 graphics cards which is believed to be around 320mm² large. This in turn means that Polaris 10 products will be significantly more affordable, lending Fudzilla's "less than $299" claim legitimacy.

AMD's Vega 10, Polaris 10 & Polaris 11 GPUs

Despite 11 being a larger number than 10, Polaris 10 is actually a larger, higher end GPU than Polaris 11. Chief Architect & head of AMD’s Radeon Technologies Group confirmed at Capsaicin that the naming scheme is time-based & Polaris 10 had simply been designed before Polaris 11, hence the smaller numerical designation.

AMD Vega 10, Polaris 10, Polaris 11 Feature

Polaris 10 is AMD’s mid-range 14nm FinFET graphics chip, Polaris 11 is the smallest of the family and Vega 10 is the HBM2 powered high-end flagship 14nm GPU launching in 2017 to succeed the Fury lineup. It will feature AMD’s next generation Vega architecture and will be the company’s first GPU to feature second generation High Bandwidth Memory.

Polaris 11 Is The Same GPU That AMD Demoed Against The GTX 950 In December & Again At CES In January

Polaris 11 was the very first FinFET graphics chip in the world from either company, Nvidia or AMD,  to be demoed publicly.  AMD first demoed the chip to the press, including WCCF, back in December ahead of CES. AMD did it once again in January at CES and that was the very first public demo of the Polaris or in fact any high performance FinFET GPU.

AMD Polaris 16
The demo consisted of two identical systems one configured with Polaris 11 - 470/460 class GPU - and Nvidia's GTX 950 running Star Wars Battlefront at 60 frames per second. The Polaris 11 system in its entirety consumed 54W less than the GTX 950. Considering that the GTX 950 on its own pulls  ~95W on average under gaming workloads, Polaris 11 is essentially more than twice as power efficient. Delivering the same performance at roughly 40 watts. Which is less than half the power consumed by the GTX 950.

Raja Koduri, Senior Vice President and Chief Architect, Radeon Technologies Group, speaking with :

This is very early silicon, by the way. We have much more performance optimization to do in the coming months. But even in this early silicon, we’re seeing numbers versus the best class on the competition running at a heavy workload, like Star Wars—The competing system consumes 140 watts. This is 86 watts. We believe we’re several months ahead of this transition, especially for the notebook and the mainstream market. The competition is talking about chips for cars and stuff, but not the mainstream market.

AMD Polaris GPUs Feature Significant Per Core Performance Gains

With all these leaks coming out we're beginning to get a much clearer picture of what AMD is doing with its next generation Polaris based graphics cards. All the leaks that we've seen so far for Vega 10, Polaris 10 & Polaris 11 indicate that AMD is configuring its next generation GPUs with similar Stream Processor counts as their Fiji, Hawaii & Pitcairn predecessors, the Fury,  R9 390 and R7 370 series.

The majority of the IP blocks in the graphics engine are new. Including a memory controller, for upcoming memory technologies, in addition to more capable and more power efficient compute units and geometry engine. The level 2 cache and the command processor have also been updated. Beyond what AMD detailed above about the key features and the display/multimedia updates the company did not go into much detail about what exactly went into these new IP blocks. We were promised more information will be revealed as we get closer to the release of Polaris graphics products.

AMD has stated on the few occasions that it talked about Polaris that 4th generation GCN core are significantly more powerful than their predecessors, hence the tame stream processor counts we're saying.

Raja Koduri, Senior Vice President and Chief Architect, Radeon Technologies Group, speaking with :
We’ve redesigned many blocks in our cores. We’ve redesigned the main processor, a new geometry processor, a completely new fourth-generation Graphics Core Next with a very high increase in performance. 


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