AMD Radeon RX 6600 vs AMD Radeon HD 6450

VS

AMD Radeon RX 6600

AMD Radeon HD 6450

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 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 RX 6600 's Advantages

Released 10 years and 6 months late

Boost Clock2491MHz

More VRAM (8GB vs 512GB)

Larger VRAM bandwidth (224.0GB/s vs 25.60GB/s)

1632 additional rendering cores

AMD Radeon HD 6450 's Advantages

Lower TDP (18W vs 132W)

Score

Benchmark

FP32 (float)

Radeon RX 6600 +4364%

8.928 TFLOPS

Radeon HD 6450

0.2 TFLOPS

Radeon RX 6600

VS

Radeon HD 6450

Graphics Card

Oct 2021

Release Date

Apr 2011

Navi II

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1626 MHz

Base Clock

-

2491 MHz

Boost Clock

-

1750 MHz

Memory Clock

800 MHz

Memory

8GB

Memory Size

512MB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

64bit

224.0GB/s

Bandwidth

25.60GB/s

Render Config

28

Compute Units

2

-

1792

Shading Units

160

112

TMUs

8

64

ROPs

4

-

28

RT Cores

-

128 KB per Array

L1 Cache

8 KB (per CU)

2 MB

L2 Cache

128 KB

32 MB

L3 Cache

-

Theoretical Performance

159.4 GPixel/s

Pixel Rate

2.500 GPixel/s

279.0 GTexel/s

Texture Rate

5.000 GTexel/s

17.86 TFLOPS

FP16 (half)

-

8.928 TFLOPS

FP32 (float)

200.0 GFLOPS

558.0 GFLOPS

FP64 (double)

-

Board Design

132W

TDP

18W

300 W

Suggested PSU

200 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 8-pin

Power Connectors

None

Graphics Processor

Navi 23

GPU Name

Caicos

Navi 23 XL (215-130000016)

GPU Variant

Caicos PRO

RDNA 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

7 nm

Process Size

40 nm

11.06 billion

Transistors

0.37 billion

237 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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