AMD Radeon RX 480 vs AMD Radeon HD 6850 X2

VS

AMD Radeon RX 480

AMD Radeon HD 6850 X2

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 480 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 480 's Advantages

Released 4 years and 9 months late

Boost Clock1266MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 134.4GB/s)

1344 additional rendering cores

Lower TDP (150W vs 254W)

Score

Benchmark

FP32 (float)

Radeon RX 480 +279%

5.834 TFLOPS

Radeon HD 6850 X2

1.536 TFLOPS

Radeon RX 480

VS

Radeon HD 6850 X2

Graphics Card

Jun 2016

Release Date

Sep 2011

Arctic Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1120 MHz

Base Clock

-

1266 MHz

Boost Clock

-

2000 MHz

Memory Clock

1050 MHz

Memory

8GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

256.0GB/s

Bandwidth

134.4GB/s

Render Config

36

Compute Units

12

-

2304

Shading Units

960

144

TMUs

48

32

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

2 MB

L2 Cache

512 KB

-

Theoretical Performance

40.51 GPixel/s

Pixel Rate

25.60 GPixel/s

182.3 GTexel/s

Texture Rate

38.40 GTexel/s

5.834 TFLOPS

FP16 (half)

-

5.834 TFLOPS

FP32 (float)

1.536 TFLOPS

364.6 GFLOPS

FP64 (double)

-

Board Design

150W

TDP

254W

450 W

Suggested PSU

600 W

1x HDMI 2.0b 3x DisplayPort 1.4a

Outputs

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

1x 6-pin

Power Connectors

2x 8-pin

Graphics Processor

Ellesmere

GPU Name

Barts

Polaris 10 XT (215-0876184)

GPU Variant

Barts PRO (215-0798006)

GCN 4.0

Architecture

TeraScale 2

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

5.7 billion

Transistors

1.7 billion

232 mm²

Die Size

255 mm²

Graphics Features

12 (12_0)

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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