AMD Radeon RX 7900 XT vs AMD Radeon R9 280X2

VS

AMD Radeon RX 7900 XT

AMD Radeon R9 280X2

We compared two Desktop platform GPUs: 20GB VRAM Radeon RX 7900 XT and 3GB VRAM Radeon R9 280X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7900 XT 's Advantages

Boost Clock has increased by 139% (2394MHz vs 1000MHz)

More VRAM (20GB vs 3GB)

Larger VRAM bandwidth (800.0GB/s vs 288.0GB/s)

3328 additional rendering cores

Lower TDP (300W vs 375W)

Score

Benchmark

FP32 (float)

Radeon RX 7900 XT +1156%

51.48 TFLOPS

Radeon R9 280X2

4.096 TFLOPS

Radeon RX 7900 XT

VS

Radeon R9 280X2

Graphics Card

Nov 2022

Release Date

Unknown

Navi III

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1387 MHz

Base Clock

950 MHz

2394 MHz

Boost Clock

1000 MHz

2500 MHz

Memory Clock

1500 MHz

Memory

20GB

Memory Size

3GB

GDDR6

Memory Type

GDDR5

320bit

Memory Bus

384bit

800.0GB/s

Bandwidth

288.0GB/s

Render Config

84

Compute Units

32

-

5376

Shading Units

2048

336

TMUs

128

192

ROPs

32

-

84

RT Cores

-

256 KB per Array

L1 Cache

16 KB (per CU)

6 MB

L2 Cache

768 KB

80 MB

L3 Cache

-

Theoretical Performance

459.6 GPixel/s

Pixel Rate

32.00 GPixel/s

804.4 GTexel/s

Texture Rate

128.0 GTexel/s

103.0 TFLOPS

FP16 (half)

-

51.48 TFLOPS

FP32 (float)

4.096 TFLOPS

1.609 TFLOPS

FP64 (double)

1024 GFLOPS

Board Design

300W

TDP

375W

700 W

Suggested PSU

750 W

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

Outputs

6x mini-DisplayPort 1.2

2x 8-pin

Power Connectors

3x 8-pin

Graphics Processor

Navi 31

GPU Name

Tahiti

Navi 31 XT (215-145000156)

GPU Variant

Tahiti XTL (215-0821065)

RDNA 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

57.7 billion

Transistors

4.313 billion

529 mm²

Die Size

352 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.2

OpenCL

1.2

1.3

Vulkan

1.2

-

6.7

Shader Model

5.1

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