AMD Radeon Pro W6900X vs AMD Radeon HD 7870 GHz Edition

VS

AMD Radeon Pro W6900X

AMD Radeon HD 7870 GHz Edition

We compared two Desktop platform GPUs: 32GB VRAM Radeon Pro W6900X and 2GB VRAM Radeon HD 7870 GHz Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro W6900X 's Advantages

Released 9 years and 5 months late

Boost Clock2150MHz

More VRAM (32GB vs 2GB)

Larger VRAM bandwidth (512.0GB/s vs 153.6GB/s)

3840 additional rendering cores

AMD Radeon HD 7870 GHz Edition 's Advantages

Lower TDP (175W vs 300W)

Score

Benchmark

FP32 (float)

Radeon Pro W6900X +760%

22.02 TFLOPS

Radeon HD 7870 GHz Edition

2.56 TFLOPS

Radeon Pro W6900X

VS

Radeon HD 7870 GHz Edition

Graphics Card

Aug 2021

Release Date

Mar 2012

Radeon Pro Mac

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1825 MHz

Base Clock

-

2150 MHz

Boost Clock

-

2000 MHz

Memory Clock

1200 MHz

Memory

32GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

256bit

512.0GB/s

Bandwidth

153.6GB/s

Render Config

80

Compute Units

20

-

5120

Shading Units

1280

320

TMUs

80

128

ROPs

32

-

80

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

512 KB

128 MB

L3 Cache

-

Theoretical Performance

275.2 GPixel/s

Pixel Rate

32.00 GPixel/s

688.0 GTexel/s

Texture Rate

80.00 GTexel/s

44.03 TFLOPS

FP16 (half)

-

22.02 TFLOPS

FP32 (float)

2.560 TFLOPS

1376 GFLOPS

FP64 (double)

160.0 GFLOPS

Board Design

300W

TDP

175W

700 W

Suggested PSU

450 W

1x HDMI 2.1 4x Thunderbolt

Outputs

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

None

Power Connectors

2x 6-pin

Graphics Processor

Navi 21

GPU Name

Pitcairn

Navi 21 Pro-XTA

GPU Variant

Pitcairn XT (215-0828047)

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

26.8 billion

Transistors

2.8 billion

520 mm²

Die Size

212 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

1.3

Vulkan

1.2

-

6.5

Shader Model

5.1

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