AMD Radeon RX 6700 XT vs AMD Radeon HD 6450 OEM

VS

AMD Radeon RX 6700 XT

AMD Radeon HD 6450 OEM

We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 6700 XT and 512MB VRAM Radeon HD 6450 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6700 XT 's Advantages

Released 10 years and 1 months late

Boost Clock2581MHz

More VRAM (12GB vs 512GB)

Larger VRAM bandwidth (384.0GB/s vs 8.528GB/s)

2400 additional rendering cores

AMD Radeon HD 6450 OEM 's Advantages

Lower TDP (18W vs 230W)

Score

Benchmark

FP32 (float)

Radeon RX 6700 XT +6505%

13.21 TFLOPS

Radeon HD 6450 OEM

0.2 TFLOPS

Radeon RX 6700 XT

VS

Radeon HD 6450 OEM

Graphics Card

Mar 2021

Release Date

Feb 2011

Navi II

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

2321 MHz

Base Clock

-

2581 MHz

Boost Clock

-

2000 MHz

Memory Clock

533 MHz

Memory

12GB

Memory Size

512MB

GDDR6

Memory Type

GDDR3

192bit

Memory Bus

64bit

384.0GB/s

Bandwidth

8.528GB/s

Render Config

40

Compute Units

2

-

2560

Shading Units

160

TMUs

8

64

ROPs

4

-

40

RT Cores

-

128 KB per Array

L1 Cache

8 KB (per CU)

3 MB

L2 Cache

128 KB

96 MB

L3 Cache

-

Theoretical Performance

165.2 GPixel/s

Pixel Rate

2.500 GPixel/s

413.0 GTexel/s

Texture Rate

5.000 GTexel/s

26.43 TFLOPS

FP16 (half)

-

13.21 TFLOPS

FP32 (float)

200.0 GFLOPS

825.9 GFLOPS

FP64 (double)

-

Board Design

230W

TDP

18W

550 W

Suggested PSU

200 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

Navi 22

GPU Name

Caicos

Navi 22 XT (215-127000006)

GPU Variant

Junbonator

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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