AMD Radeon Pro W6900X vs AMD Radeon HD 6450

VS

AMD Radeon Pro W6900X

AMD Radeon HD 6450

We compared two Desktop platform GPUs: 32GB VRAM Radeon Pro W6900X and 512MB VRAM Radeon HD 6450 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro W6900X 's Advantages

Released 10 years and 4 months late

Boost Clock2150MHz

More VRAM (32GB vs 512GB)

Larger VRAM bandwidth (512.0GB/s vs 25.60GB/s)

4960 additional rendering cores

AMD Radeon HD 6450 's Advantages

Lower TDP (18W vs 300W)

Score

Benchmark

FP32 (float)

Radeon Pro W6900X +10910%

22.02 TFLOPS

Radeon HD 6450

0.2 TFLOPS

Radeon Pro W6900X

VS

Radeon HD 6450

Graphics Card

Aug 2021

Release Date

Apr 2011

Radeon Pro Mac

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1825 MHz

Base Clock

-

2150 MHz

Boost Clock

-

2000 MHz

Memory Clock

800 MHz

Memory

32GB

Memory Size

512MB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

64bit

512.0GB/s

Bandwidth

25.60GB/s

Render Config

80

Compute Units

2

-

5120

Shading Units

160

320

TMUs

8

128

ROPs

4

-

80

RT Cores

-

128 KB per Array

L1 Cache

8 KB (per CU)

4 MB

L2 Cache

128 KB

128 MB

L3 Cache

-

Theoretical Performance

275.2 GPixel/s

Pixel Rate

2.500 GPixel/s

688.0 GTexel/s

Texture Rate

5.000 GTexel/s

44.03 TFLOPS

FP16 (half)

-

22.02 TFLOPS

FP32 (float)

200.0 GFLOPS

1376 GFLOPS

FP64 (double)

-

Board Design

300W

TDP

18W

700 W

Suggested PSU

200 W

1x HDMI 2.1 4x Thunderbolt

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

None

Power Connectors

None

Graphics Processor

Navi 21

GPU Name

Caicos

Navi 21 Pro-XTA

GPU Variant

Caicos PRO

RDNA 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

7 nm

Process Size

40 nm

26.8 billion

Transistors

0.37 billion

520 mm²

Die Size

67 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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