AMD Radeon HD 6870 vs AMD Radeon Pro W6900X

VS

AMD Radeon HD 6870

AMD Radeon Pro W6900X

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 32GB VRAM Radeon Pro W6900X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 's Advantages

Lower TDP (151W vs 300W)

AMD Radeon Pro W6900X 's Advantages

Released 10 years and 10 months late

Boost Clock2150MHz

More VRAM (32GB vs 1024GB)

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

4000 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6870

2.016 TFLOPS

Radeon Pro W6900X +992%

22.02 TFLOPS

Radeon HD 6870

VS

Radeon Pro W6900X

Graphics Card

Oct 2010

Release Date

Aug 2021

Northern Islands

Generation

Radeon Pro Mac

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1825 MHz

-

Boost Clock

2150 MHz

1050 MHz

Memory Clock

2000 MHz

Memory

1024MB

Memory Size

32GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

512.0GB/s

Render Config

14

Compute Units

80

-

1120

Shading Units

5120

56

TMUs

320

32

ROPs

128

-

RT Cores

80

8 KB (per CU)

L1 Cache

128 KB per Array

512 KB

L2 Cache

4 MB

-

L3 Cache

128 MB

Theoretical Performance

28.80 GPixel/s

Pixel Rate

275.2 GPixel/s

50.40 GTexel/s

Texture Rate

688.0 GTexel/s

-

FP16 (half)

44.03 TFLOPS

2.016 TFLOPS

FP32 (float)

22.02 TFLOPS

-

FP64 (double)

1376 GFLOPS

Board Design

151W

TDP

300W

450 W

Suggested PSU

700 W

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

Outputs

1x HDMI 2.1 4x Thunderbolt

2x 6-pin

Power Connectors

None

Graphics Processor

Barts

GPU Name

Navi 21

Barts XT (215-0798000)

GPU Variant

Navi 21 Pro-XTA

TeraScale 2

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

7 nm

1.7 billion

Transistors

26.8 billion

255 mm²

Die Size

520 mm²

Graphics Features

11.2 (11_0)

DirectX

12 Ultimate (12_2)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.3

-

5.0

Shader Model

6.5

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