AMD Radeon RX 6950 XT vs AMD Radeon HD 6450 OEM

VS

AMD Radeon RX 6950 XT

AMD Radeon HD 6450 OEM

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6950 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 6950 XT 's Advantages

Released 11 years and 3 months late

Boost Clock2310MHz

More VRAM (16GB vs 512GB)

Larger VRAM bandwidth (576.0GB/s vs 8.528GB/s)

4960 additional rendering cores

AMD Radeon HD 6450 OEM 's Advantages

Lower TDP (18W vs 335W)

Score

Benchmark

FP32 (float)

Radeon RX 6950 XT +11725%

23.65 TFLOPS

Radeon HD 6450 OEM

0.2 TFLOPS

Radeon RX 6950 XT

VS

Radeon HD 6450 OEM

Graphics Card

May 2022

Release Date

Feb 2011

Navi II

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1860 MHz

Base Clock

-

2310 MHz

Boost Clock

-

2250 MHz

Memory Clock

533 MHz

Memory

16GB

Memory Size

512MB

GDDR6

Memory Type

GDDR3

256bit

Memory Bus

64bit

576.0GB/s

Bandwidth

8.528GB/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

295.7 GPixel/s

Pixel Rate

2.500 GPixel/s

739.2 GTexel/s

Texture Rate

5.000 GTexel/s

47.31 TFLOPS

FP16 (half)

-

23.65 TFLOPS

FP32 (float)

200.0 GFLOPS

1478 GFLOPS

FP64 (double)

-

Board Design

335W

TDP

18W

700 W

Suggested PSU

200 W

1x HDMI 2.1 2x DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

2x 8-pin

Power Connectors

None

Graphics Processor

Navi 21

GPU Name

Caicos

Navi 21 KXTX (215-121000289)

GPU Variant

Junbonator

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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