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Radeon RX Vega 56 tested: AMD positioning itself in the middle

Friday, August 18th, 2017 | Gadgets

On the Radeon RX Vega 64 we tested, the slightly slower Radeon RX 56, which costs significantly less. AMD has only slightly cut the new graphics card compared to the top model, which is why the speed is still very high – but this also applies to power consumption.

The technical basis of the Radeon RX Vega 56 is the Vega 10 called graphics chip, which consists of 64 compute units and thus 4,096 compute cores. As the name already implies, AMD uses only GPUs with 56 Compute Units for the Radeon RX Vega 56 and therefore 3.584 shaders. The chip frequency reduces AMD to 1.156 MHz base clock, the boost reaches a maximum of 1.590 MHz. In our tests, the Radeon RX Vega 56 clocked most of the time at around 1,350 MHz when a game was played in 4K for 20 minutes or longer. AMD has reduced the memory frequency to 1,600 MHz, which is a good match for computing performance.

 RX Vega 64 Liquid CooledRX Vega 64 Air CooledRX Vega 56Computer ChipVega 10Vega 10Vega 10Compute Units646456Shader ALUs 4.0964.0963.584Textur Units 256256224ROPs646464Interface2.048 Bit2.048 Bit2.048 BitChipTakt (Boost) 1.406 (1,750) MHz1.247 (1.630) MHz1.156 ( 1.590) MHzSpeicherakt1.890 MHz1.890 MHz1.600 MHzSpeicheryp8 GB HBM28 GByte HBM28 GByte HBM2GPU-Power265 Watt220 Watt165 WattBoard-Power345 Watt295 Watt210 WattPower connection2 x 8-pole2 x 8-pole2 x 8-pole specifications of the Radeon RX Vega

We measure the Radeon RX Vega 56 again in combination with a Ryzen 7 1800X with 16 GB DDR4 memory and current drivers. The map between GeForce GTX 1070 and GeForce GTX 1080 pushes across all benchmarks, although the AMD card is closer to the slower model. The performance is thus roughly a custom design of the Geforce GTX 1070. It is striking that the Radeon RX Vega 56 in Battlefield 1 and in CoD Infinite Warfare well, but in Dishonored 2 and Gears of War 4 but rather bad – as well Previously Radeon RX Vega 64.

    Ryzen 7 1800X, 16 GB DDR4-3200; Windows 10, Geforce 385.12, Radeon Software 17.30.1051
AMD used the Radeon RX Vega 56 reference design for the faster-known board. This is accompanied by two 8-pole connections, because an individual would only be sufficient. Our pattern reaches 4K in Battlefield 1 and in Doom a power consumption of 230 watts – a whopping 85 watts more than a Geforce GTX 1070. However, there is also also with the Radeon RX Vega 56 the option to load a bios through the switch the GPU Power.

 (4K, Nightmare, Vulkan) Radeon RX Vega 64 AC13,2 Watt284 Watt281 WattRadeon RX Vega 5613,3 Watt231 Watt229 WattGeforce GTX 1080 Ti FE11,2 Watt247 Watt252 WattGeforce GTX 1080 FE7,5. This product is compatible with: Watt175 Watt173 WattGeforce GTX 1070 FE7,1 Watt144 Watt148 WattPower consumption of the Radeon RX Vega 64 and Vega 56

If this is selected and the power save profile is selected in the Radeon Settings in the Wattman, the energy required drops to 190 watts. The average chip clock falls from 1,350 MHz to 1,240 MHz. Our benchmarks show that the image rate in Battlefield 1 and Doom drops by 2 to 3 percent. The frametimes show no abnormalities.

    Vega 10 uses two HBM2 stacks. (Photo: Marc Sauter / Golem.de)
Availability and conclusion
AMD, the Radeon RX Vega 56 will be available from August 28, 2017 for 400 euros. It is however to wait, whether this price is durable, after the Radeon RX 64 already 650 euros or more instead of 500 euros. Obendrein are to be expected from September Custom-models of the Vega 56.
The Radeon RX Vega 56 has it easier because of its supposed price than the Radeon RX Vega 64. The smaller card is a bit cheaper than overclocked variants of the Geforce GTX 1070, but delivers approximately the same gaming performance. The energy consumption is higher for this, although this has less effect on the electricity costs than the volume of the cooling.
If you can wait a few more weeks, you should look at the partner cards, which should be more attractive than the reference design of the Radeon RX Vega 56 due to better coolers and quieter fans and overclocking.


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