AMD Radeon Pro Duo Preview: Dual Fiji Unleashed

AMD Radeon Pro Duo Specifications

After almost a year of sneak peeks and strategic demos, AMD has finally begun shipping its dual-Fiji GPU powered graphics card, the Radeon Pro Duo. AMD is positioning the Radeon Pro Duo as a card for “gamers who create, and creators who game” and for budding VR developers in need of some monstrous compute performance, though the simple fact that it is packing a pair of AMD's current top-end GPUs will make it interesting to hardcore gamers with big budgets as well.

If you would like a refresher on the underlying technologies at work on the Radeon Pro Duo, we have a few articles we'd recommend perusing. Our Radeon R9 Fury X review covers many of specific features and capabilities of the Fuji GPU employed on this card. We've also got some detail regarding the High Bandwidth Memory (HBM) used on Fiji, and cover Asynchronous Compute as well. Though the Radeon Pro Duo is a new product in AMD's stack, and the first in the company's VR Ready Creator line, it is fundamentally similar to the R9 Fury series, since they're based on the same underlying GPU technology.

With that said, we've got all of the speeds and feeds for the Radeon Pro Duo listed for you below and will cover many of its specific features on the paged ahead...
radeon duo angle 2
The AMD Radeon Pro Duo, Dual GPU Graphics Card

AMD Radeon Pro Duo
Specifications & Features
Radeon Pro Duo R9 Nano R9 Fury X
Process 28nm 28nm 28nm
Stream Processors 8192 (4096 x 2) 4096 4096
Compute Units 128 (64 x 2) 64 64
Engine Clock Up To 1GHz Up To 1GHz Up To 1.05GHz
Compute Performance 16.38 TFLOPS 8.19 TFLOPS 8.6 TFLOPS
Texture Units 512 (256 x 2) 256 256
Texture Fill-Rate 512 GT/s 256 GT/s 268 GT/s
ROPs 128 (64 x 2) 64 64
Pixel Fill-Rate 128 GP/s 64 GP/s 67.2 GP/s
Z/Stencil 512 256 256
Memory Configuration 8GB HBM (4GB x 2) 4GB HBM 4GB HBM
Memory Interface 4096-bit x 2 4096-bit 4096-bit
Memory Speed / Data Rate 500 MHz / 1.0 Gbps 500 MHz / 1.0 Gbps 500 MHz / 1.0 Gbps
Memory Bandwidth Up To 1024 GB/s Up To 512 GB/s Up To 512 GB/s
Power Connectors 3 x 8-Pin 1 x 8-Pin 2 x 8-Pin
Typical Board Power 350 W 175 W 275 W
PCIe Standard PCIe 3.0 PCIe 3.0 PCIe 3.0
API Support DX12, Vulkan, Mantle DX12, Vulkan, Mantle DX12, Vulkan, Mantle
FreeSync Support Yes Yes Yes
Virtual Super Resolution Yes Yes Yes
Frame Rate Target Control Yes Yes Yes
Radeon Pro Duo Logo        Radeon Pro Duo vr ready

As we've mentioned, the Radeon Pro Duo is built around a pair of AMD’s Fiji GPUs. Like most GPUs from the last couple of generations, Fiji is manufactured using TSMC’s 28nm process – the ASICs used here are the very same ones featured on the Fury X and Fury Nano. We've got the full list of specifications side-by-side with a couple of other high-end Radeons above for comparison.

radeon duo front
The AMD Radeon Pro Duo, Front View

Each AMD Fiji GPU is comprised of roughly 8.9B transistors and has a die size of 596mm2. Keep in mind though, other parts of Fiji, like its 4GB of High Bandwidth Memory (HBM) and Interposer (which is used to connect the GPU to the HBM) are not accounted for in that die size. The total for the entire assembly is roughly 1011mm2 per GPU, and there are two on the Radeon Pro Duo.

radeon duo cooling
The AMD Radeon Pro Duo With Liquid-Cooling Courtesy Of CoolerMaster

The Fiji GPUs used on the Radeon Pro Duo feature 4096 stream processors each, for a total of 8192 per card. The memory bus width is 4096-bits wide per GPU, and each is packing 4GB of integrated HBM memory, for a total of 8GB. The 256 texture units per GPU get doubled to 512 on the card too, as do the total number of ROPs – there are 64 per GPU, for a total of 128 on the Radeon Pro Duo.

radeon duo front all
The AMD Radeon Pro Duo, With Closed-Loop Liquid Cooling

At its reference clocks of up to 1GHz (GPU) and 500MHz (HBM), the Radeon Pro Duo offers peak compute performance of 16.38 TFLOPs, up to 512 GT/s of texture fill-rate, 128 GP/s of pixel fill-rate, and a whopping 1024GB/s of aggregate memory bandwidth – it’s essentially equivalent to a pair of Radeon R9 Nanos running in CrossFire on a single card. The compute performance, memory bandwidth, and textured fill-rate are huge upgrades over any previous-gen, single-GPU powered graphics card, thanks to the pair of GPUs used on the Pro Duo.

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