AMD Radeon RX 6900 XTX vs NVIDIA GeForce RTX 3080 Ti 20 GB

VS

AMD Radeon RX 6900 XTX NVIDIA GeForce RTX 3080 Ti 20 GB

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XTX and 20GB VRAM GeForce RTX 3080 Ti 20 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

Boost Clock has increased by 46% (2435MHz vs 1665MHz)

Lower TDP (330W vs 350W)

NVIDIA GeForce RTX 3080 Ti 20 GB 's Advantages

More VRAM (20GB vs 16GB)

Larger VRAM bandwidth (760.3GB/s vs 576.0GB/s)

5120 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6900 XTX

24.93 TFLOPS

GeForce RTX 3080 Ti 20 GB +36%

34.1 TFLOPS

Radeon RX 6900 XTX

VS

GeForce RTX 3080 Ti 20 GB

Graphics Card

Unknown

Release Date

Jan 2022

Navi II

Generation

GeForce 30

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

2075 MHz

Base Clock

1335 MHz

2435 MHz

Boost Clock

1665 MHz

2250 MHz

Memory Clock

1188 MHz

Memory

16GB

Memory Size

20GB

GDDR6

Memory Type

GDDR6X

256bit

Memory Bus

320bit

576.0GB/s

Bandwidth

760.3GB/s

Render Config

-

SM Count

80

Compute Units

-

5120

Shading Units

10240

320

TMUs

320

128

ROPs

112

-

Tensor Cores

320

80

RT Cores

80

128 KB per Array

L1 Cache

128 KB (per SM)

4 MB

L2 Cache

6 MB

Theoretical Performance

311.7 GPixel/s

Pixel Rate

186.5 GPixel/s

779.2 GTexel/s

Texture Rate

532.8 GTexel/s

49.87 TFLOPS

FP16 (half)

34.10 TFLOPS

24.93 TFLOPS

FP32 (float)

34.10 TFLOPS

1.558 TFLOPS

FP64 (double)

532.8 GFLOPS

Graphics Processor

Navi 21

GPU Name

GA102

Navi 21 XTXH (215-121000247)

GPU Variant

GA102-225-A1

RDNA 2.0

Architecture

Ampere

TSMC

Foundry

Samsung

7 nm

Process Size

8 nm

26.8 billion

Transistors

28.3 billion

520 mm²

Die Size

628 mm²

Board Design

330W

TDP

350W

700 W

Suggested PSU

750 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 12-pin

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

8.6

6.5

Shader Model

6.6

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