AMD Radeon RX 6700 vs AMD Radeon HD 6450

VS

AMD Radeon RX 6700

AMD Radeon HD 6450

We compared two Desktop platform GPUs: 10GB VRAM Radeon RX 6700 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 6700 's Advantages

Released 10 years and 2 months late

Boost Clock2450MHz

More VRAM (10GB vs 512GB)

Larger VRAM bandwidth (320.0GB/s vs 25.60GB/s)

2144 additional rendering cores

AMD Radeon HD 6450 's Advantages

Lower TDP (18W vs 175W)

Score

Benchmark

FP32 (float)

Radeon RX 6700 +5545%

11.29 TFLOPS

Radeon HD 6450

0.2 TFLOPS

Radeon RX 6700

VS

Radeon HD 6450

Graphics Card

Jun 2021

Release Date

Apr 2011

Navi II

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1941 MHz

Base Clock

-

2450 MHz

Boost Clock

-

2000 MHz

Memory Clock

800 MHz

Memory

10GB

Memory Size

512MB

GDDR6

Memory Type

GDDR5

160bit

Memory Bus

64bit

320.0GB/s

Bandwidth

25.60GB/s

Render Config

36

Compute Units

2

-

2304

Shading Units

160

144

TMUs

8

64

ROPs

4

-

36

RT Cores

-

128 KB per Array

L1 Cache

8 KB (per CU)

3 MB

L2 Cache

128 KB

80 MB

L3 Cache

-

Theoretical Performance

156.8 GPixel/s

Pixel Rate

2.500 GPixel/s

352.8 GTexel/s

Texture Rate

5.000 GTexel/s

22.58 TFLOPS

FP16 (half)

-

11.29 TFLOPS

FP32 (float)

200.0 GFLOPS

705.6 GFLOPS

FP64 (double)

-

Board Design

175W

TDP

18W

450 W

Suggested PSU

200 W

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 8-pin

Power Connectors

None

Graphics Processor

Navi 22

GPU Name

Caicos

Navi 22 XTL

GPU Variant

Caicos PRO

RDNA 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

7 nm

Process Size

40 nm

17.2 billion

Transistors

0.37 billion

335 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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