AMD Radeon RX 455 OEM vs AMD Radeon RX 6900 XT

VS

AMD Radeon RX 455 OEM

AMD Radeon RX 6900 XT

We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 455 OEM and 16GB VRAM Radeon RX 6900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 455 OEM 's Advantages

Lower TDP (100W vs 300W)

AMD Radeon RX 6900 XT 's Advantages

Released 4 years and 4 months late

Boost Clock2250MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (512.0GB/s vs 104.0GB/s)

4352 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 455 OEM

1.613 TFLOPS

Radeon RX 6900 XT +1328%

23.04 TFLOPS

Radeon RX 455 OEM

VS

Radeon RX 6900 XT

Graphics Card

Jun 2016

Release Date

Oct 2020

Arctic Islands

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1825 MHz

-

Boost Clock

2250 MHz

1625 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

128bit

Memory Bus

256bit

104.0GB/s

Bandwidth

512.0GB/s

Render Config

12

Compute Units

80

-

768

Shading Units

5120

48

TMUs

320

16

ROPs

128

-

RT Cores

80

16 KB (per CU)

L1 Cache

128 KB per Array

256 KB

L2 Cache

4 MB

-

L3 Cache

128 MB

Theoretical Performance

16.80 GPixel/s

Pixel Rate

288.0 GPixel/s

50.40 GTexel/s

Texture Rate

720.0 GTexel/s

-

FP16 (half)

46.08 TFLOPS

1.613 TFLOPS

FP32 (float)

23.04 TFLOPS

100.8 GFLOPS

FP64 (double)

1440 GFLOPS

Board Design

100W

TDP

300W

300 W

Suggested PSU

700 W

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

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

1x 6-pin

Power Connectors

2x 8-pin

Graphics Processor

Tobago

GPU Name

Navi 21

Tobago PRO (215-0875010)

GPU Variant

Navi 21 XTX (215-121000167)

GCN 2.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

2.08 billion

Transistors

26.8 billion

160 mm²

Die Size

520 mm²

Graphics Features

12 (12_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.0

OpenCL

2.1

1.2

Vulkan

1.3

-

6.3

Shader Model

6.5

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