AMD Radeon R9 280 vs AMD Radeon RX 6900 XT

VS

AMD Radeon R9 280

AMD Radeon RX 6900 XT

We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 280 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 R9 280 's Advantages

Lower TDP (200W vs 300W)

AMD Radeon RX 6900 XT 's Advantages

Released 6 years and 7 months late

Boost Clock has increased by 141% (2250MHz vs 933MHz)

More VRAM (16GB vs 3GB)

Larger VRAM bandwidth (512.0GB/s vs 240.0GB/s)

3328 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 280

3.344 TFLOPS

Radeon RX 6900 XT +588%

23.04 TFLOPS

3DMark Time Spy

Radeon R9 280

2009

Radeon RX 6900 XT +941%

20932

Radeon R9 280

VS

Radeon RX 6900 XT

Graphics Card

Mar 2014

Release Date

Oct 2020

Volcanic Islands

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

827 MHz

Base Clock

1825 MHz

933 MHz

Boost Clock

2250 MHz

1250 MHz

Memory Clock

2000 MHz

Memory

3GB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

384bit

Memory Bus

256bit

240.0GB/s

Bandwidth

512.0GB/s

Render Config

28

Compute Units

80

-

1792

Shading Units

5120

112

TMUs

320

32

ROPs

128

-

RT Cores

80

16 KB (per CU)

L1 Cache

128 KB per Array

768 KB

L2 Cache

4 MB

-

L3 Cache

128 MB

Theoretical Performance

29.86 GPixel/s

Pixel Rate

288.0 GPixel/s

104.5 GTexel/s

Texture Rate

720.0 GTexel/s

-

FP16 (half)

46.08 TFLOPS

3.344 TFLOPS

FP32 (float)

23.04 TFLOPS

836.0 GFLOPS

FP64 (double)

1440 GFLOPS

Board Design

200W

TDP

300W

550 W

Suggested PSU

700 W

1x DVI 2x HDMI 1.4a 1x DisplayPort 1.2

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Tahiti

GPU Name

Navi 21

Tahiti PRO3 (215-0821330)

GPU Variant

Navi 21 XTX (215-121000167)

GCN 1.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

4.313 billion

Transistors

26.8 billion

352 mm²

Die Size

520 mm²

Graphics Features

12 (11_1)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.3

-

5.1

Shader Model

6.5

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