AMD Radeon RX 6900 XTX vs NVIDIA GeForce RTX 4080 12 GB

VS

AMD Radeon RX 6900 XTX

NVIDIA GeForce RTX 4080 12 GB

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XTX and 12GB VRAM GeForce RTX 4080 12 GB to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6900 XTX 's Advantages

More VRAM (16GB vs 12GB)

Larger VRAM bandwidth (576.0GB/s vs 504.2GB/s)

NVIDIA GeForce RTX 4080 12 GB 's Advantages

Boost Clock has increased by 7% (2610MHz vs 2435MHz)

2560 additional rendering cores

Lower TDP (285W vs 330W)

Score

Benchmark

FP32 (float)

Radeon RX 6900 XTX

24.93 TFLOPS

GeForce RTX 4080 12 GB +60%

40.09 TFLOPS

Radeon RX 6900 XTX

VS

GeForce RTX 4080 12 GB

Graphics Card

Unknown

Release Date

Unknown

Navi II

Generation

GeForce 40

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

2075 MHz

Base Clock

2310 MHz

2435 MHz

Boost Clock

2610 MHz

2250 MHz

Memory Clock

1313 MHz

Memory

16GB

Memory Size

12GB

GDDR6

Memory Type

GDDR6X

256bit

Memory Bus

192bit

576.0GB/s

Bandwidth

504.2GB/s

Render Config

80

Compute Units

-

SM Count

60

5120

Shading Units

7680

320

TMUs

240

128

ROPs

80

-

Tensor Cores

240

80

RT Cores

60

128 KB per Array

L1 Cache

128 KB (per SM)

4 MB

L2 Cache

48 MB

128 MB

L3 Cache

-

Theoretical Performance

311.7 GPixel/s

Pixel Rate

208.8 GPixel/s

779.2 GTexel/s

Texture Rate

626.4 GTexel/s

49.87 TFLOPS

FP16 (half)

40.09 TFLOPS

24.93 TFLOPS

FP32 (float)

40.09 TFLOPS

1.558 TFLOPS

FP64 (double)

626.4 GFLOPS

Board Design

330W

TDP

285W

700 W

Suggested PSU

600 W

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

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

2x 8-pin

Power Connectors

1x 16-pin

Graphics Processor

Navi 21

GPU Name

AD104

Navi 21 XTXH (215-121000247)

GPU Variant

AD104-400-A1

RDNA 2.0

Architecture

Ada Lovelace

TSMC

Foundry

TSMC

7 nm

Process Size

4 nm

26.8 billion

Transistors

35.8 billion

520 mm²

Die Size

295 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.3

Vulkan

1.3

-

CUDA

8.9

6.5

Shader Model

6.6

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