AMD Radeon Pro W6800 vs AMD Radeon HD 6870 X2

VS

AMD Radeon Pro W6800

AMD Radeon HD 6870 X2

We compared two Desktop platform GPUs: 32GB VRAM Radeon Pro W6800 and 1024MB VRAM Radeon HD 6870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro W6800 's Advantages

Released 9 years and 11 months late

Boost Clock2320MHz

More VRAM (32GB vs 1024GB)

Larger VRAM bandwidth (512.0GB/s vs 134.4GB/s)

2720 additional rendering cores

Lower TDP (250W vs 300W)

Score

Benchmark

FP32 (float)

Radeon Pro W6800 +783%

17.82 TFLOPS

Radeon HD 6870 X2

2.016 TFLOPS

Radeon Pro W6800

VS

Radeon HD 6870 X2

Graphics Card

Jun 2021

Release Date

Jul 2011

Radeon Pro

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

2075 MHz

Base Clock

-

2320 MHz

Boost Clock

-

2000 MHz

Memory Clock

1050 MHz

Memory

32GB

Memory Size

1024MB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

256bit

512.0GB/s

Bandwidth

134.4GB/s

Render Config

60

Compute Units

14

-

3840

Shading Units

1120

240

TMUs

56

96

ROPs

32

-

60

RT Cores

-

128 KB per Array

L1 Cache

8 KB (per CU)

4 MB

L2 Cache

512 KB

128 MB

L3 Cache

-

Theoretical Performance

222.7 GPixel/s

Pixel Rate

28.80 GPixel/s

556.8 GTexel/s

Texture Rate

50.40 GTexel/s

35.64 TFLOPS

FP16 (half)

-

17.82 TFLOPS

FP32 (float)

2.016 TFLOPS

1114 GFLOPS

FP64 (double)

-

Board Design

250W

TDP

300W

600 W

Suggested PSU

700 W

6x mini-DisplayPort 1.4a

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

-

Graphics Processor

Navi 21

GPU Name

Barts

-

GPU Variant

Barts XT (215-0798000)

RDNA 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

7 nm

Process Size

40 nm

26.8 billion

Transistors

1.7 billion

520 mm²

Die Size

255 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

1.3

Vulkan

N/A

-

6.5

Shader Model

5.0

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