AMD Radeon RX Vega 64 vs AMD Radeon HD 6850 X2

VS

AMD Radeon RX Vega 64

AMD Radeon HD 6850 X2

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX Vega 64 and 2GB VRAM Radeon HD 6850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX Vega 64 's Advantages

Released 5 years and 11 months late

Boost Clock1546MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (483.8GB/s vs 134.4GB/s)

3136 additional rendering cores

AMD Radeon HD 6850 X2 's Advantages

Lower TDP (254W vs 295W)

Score

Benchmark

FP32 (float)

Radeon RX Vega 64 +724%

12.66 TFLOPS

Radeon HD 6850 X2

1.536 TFLOPS

Radeon RX Vega 64

VS

Radeon HD 6850 X2

Graphics Card

Aug 2017

Release Date

Sep 2011

Vega

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1247 MHz

Base Clock

-

1546 MHz

Boost Clock

-

945 MHz

Memory Clock

1050 MHz

Memory

8GB

Memory Size

2GB

HBM2

Memory Type

GDDR5

2048bit

Memory Bus

256bit

483.8GB/s

Bandwidth

134.4GB/s

Render Config

64

Compute Units

12

-

4096

Shading Units

960

256

TMUs

48

64

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

4 MB

L2 Cache

512 KB

-

Theoretical Performance

98.94 GPixel/s

Pixel Rate

25.60 GPixel/s

395.8 GTexel/s

Texture Rate

38.40 GTexel/s

25.33 TFLOPS

FP16 (half)

-

12.66 TFLOPS

FP32 (float)

1.536 TFLOPS

791.6 GFLOPS

FP64 (double)

-

Board Design

295W

TDP

254W

600 W

Suggested PSU

600 W

1x HDMI 2.0b 3x DisplayPort 1.4a

Outputs

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

2x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Vega 10

GPU Name

Barts

Vega 10 XT (215-0894200)

GPU Variant

Barts PRO (215-0798006)

GCN 5.0

Architecture

TeraScale 2

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

12.5 billion

Transistors

1.7 billion

495 mm²

Die Size

255 mm²

Graphics Features

12 (12_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

Vulkan

N/A

-

6.4

Shader Model

5.0

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