NVIDIA GeForce RTX 3080 Ti 20 GB vs AMD Radeon RX 6650 XT

VS

NVIDIA GeForce RTX 3080 Ti 20 GB AMD Radeon RX 6650 XT

We compared two Desktop platform GPUs: 20GB VRAM GeForce RTX 3080 Ti 20 GB and 8GB VRAM Radeon RX 6650 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 3080 Ti 20 GB 's Advantages

More VRAM (20GB vs 8GB)

Larger VRAM bandwidth (760.3GB/s vs 280.3GB/s)

8192 additional rendering cores

AMD Radeon RX 6650 XT 's Advantages

Boost Clock has increased by 58% (2635MHz vs 1665MHz)

Lower TDP (176W vs 350W)

Score

Benchmark

FP32 (float)

GeForce RTX 3080 Ti 20 GB +216%

34.1 TFLOPS

Radeon RX 6650 XT

10.79 TFLOPS

Blender

GeForce RTX 3080 Ti 20 GB +412%

6294

Radeon RX 6650 XT

1229

GeForce RTX 3080 Ti 20 GB

VS

Radeon RX 6650 XT

Graphics Card

Jan 2022

Release Date

May 2022

GeForce 30

Generation

Navi II

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x8

Clock Speeds

1335 MHz

Base Clock

2055 MHz

1665 MHz

Boost Clock

2635 MHz

1188 MHz

Memory Clock

2190 MHz

Memory

20GB

Memory Size

8GB

GDDR6X

Memory Type

GDDR6

320bit

Memory Bus

128bit

760.3GB/s

Bandwidth

280.3GB/s

Render Config

80

SM Count

-

Compute Units

32

10240

Shading Units

2048

320

TMUs

128

112

ROPs

64

320

Tensor Cores

-

80

RT Cores

32

128 KB (per SM)

L1 Cache

128 KB per Array

6 MB

L2 Cache

2 MB

Theoretical Performance

186.5 GPixel/s

Pixel Rate

168.6 GPixel/s

532.8 GTexel/s

Texture Rate

337.3 GTexel/s

34.10 TFLOPS

FP16 (half)

21.59 TFLOPS

34.10 TFLOPS

FP32 (float)

10.79 TFLOPS

532.8 GFLOPS

FP64 (double)

674.6 GFLOPS

Graphics Processor

GA102

GPU Name

Navi 23

GA102-225-A1

GPU Variant

Navi 23 KXT (215-130000136)

Ampere

Architecture

RDNA 2.0

Samsung

Foundry

TSMC

8 nm

Process Size

7 nm

28.3 billion

Transistors

11.06 billion

628 mm²

Die Size

237 mm²

Board Design

350W

TDP

176W

750 W

Suggested PSU

450 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

1x 12-pin

Power Connectors

1x 8-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.3

Vulkan

1.3

8.6

CUDA

-

6.6

Shader Model

6.5

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