AMD Radeon HD 6450 OEM vs AMD Radeon RX 7900 XT

VS

AMD Radeon HD 6450 OEM

AMD Radeon RX 7900 XT

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 6450 OEM and 20GB VRAM Radeon RX 7900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6450 OEM 's Advantages

Lower TDP (18W vs 300W)

AMD Radeon RX 7900 XT 's Advantages

Released 11 years and 9 months late

Boost Clock2394MHz

More VRAM (20GB vs 512GB)

Larger VRAM bandwidth (800.0GB/s vs 8.528GB/s)

5216 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6450 OEM

0.2 TFLOPS

Radeon RX 7900 XT +25640%

51.48 TFLOPS

Radeon HD 6450 OEM

VS

Radeon RX 7900 XT

Graphics Card

Feb 2011

Release Date

Nov 2022

Northern Islands

Generation

Navi III

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1387 MHz

-

Boost Clock

2394 MHz

533 MHz

Memory Clock

2500 MHz

Memory

512MB

Memory Size

20GB

GDDR3

Memory Type

GDDR6

64bit

Memory Bus

320bit

8.528GB/s

Bandwidth

800.0GB/s

Render Config

2

Compute Units

84

-

160

Shading Units

5376

8

TMUs

336

4

ROPs

192

-

RT Cores

84

8 KB (per CU)

L1 Cache

256 KB per Array

128 KB

L2 Cache

6 MB

-

L3 Cache

80 MB

Theoretical Performance

2.500 GPixel/s

Pixel Rate

459.6 GPixel/s

5.000 GTexel/s

Texture Rate

804.4 GTexel/s

-

FP16 (half)

103.0 TFLOPS

200.0 GFLOPS

FP32 (float)

51.48 TFLOPS

-

FP64 (double)

1.609 TFLOPS

Board Design

18W

TDP

300W

200 W

Suggested PSU

700 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

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

None

Power Connectors

2x 8-pin

Graphics Processor

Caicos

GPU Name

Navi 31

Junbonator

GPU Variant

Navi 31 XT (215-145000156)

TeraScale 2

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

5 nm

0.37 billion

Transistors

57.7 billion

67 mm²

Die Size

529 mm²

Graphics Features

11.2 (11_0)

DirectX

12 Ultimate (12_2)

4.4

OpenGL

4.6

1.2

OpenCL

2.2

N/A

Vulkan

1.3

-

5.0

Shader Model

6.7

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