AMD Radeon RX 6600 XT vs AMD Radeon RX 7950 XT

VS

AMD Radeon RX 6600 XT AMD Radeon RX 7950 XT

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 20GB VRAM Radeon RX 7950 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600 XT 's Advantages

Lower TDP (160W vs 300W)

AMD Radeon RX 7950 XT 's Advantages

Boost Clock has increased by 16% (3000MHz vs 2589MHz)

More VRAM (20GB vs 8GB)

Larger VRAM bandwidth (800.0GB/s vs 256.0GB/s)

3328 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6600 XT

10.6 TFLOPS

Radeon RX 7950 XT +508%

64.51 TFLOPS

Radeon RX 6600 XT

VS

Radeon RX 7950 XT

Graphics Card

Jul 2021

Release Date

Unknown

Navi II

Generation

Navi III

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 4.0 x16

Clock Speeds

1968 MHz

Base Clock

2000 MHz

2589 MHz

Boost Clock

3000 MHz

2000 MHz

Memory Clock

2500 MHz

Memory

8GB

Memory Size

20GB

GDDR6

Memory Type

GDDR6

128bit

Memory Bus

320bit

256.0GB/s

Bandwidth

800.0GB/s

Render Config

-

SM Count

-

32

Compute Units

84

2048

Shading Units

5376

128

TMUs

336

64

ROPs

192

-

Tensor Cores

-

32

RT Cores

84

128 KB per Array

L1 Cache

256 KB per Array

2 MB

L2 Cache

6 MB

Theoretical Performance

165.7 GPixel/s

Pixel Rate

576.0 GPixel/s

331.4 GTexel/s

Texture Rate

1008 GTexel/s

21.21 TFLOPS

FP16 (half)

129.0 TFLOPS

10.60 TFLOPS

FP32 (float)

64.51 TFLOPS

662.8 GFLOPS

FP64 (double)

2.016 TFLOPS

Graphics Processor

Navi 23

GPU Name

Navi 31

Navi 23 XT (215-130000006)

GPU Variant

Navi 31 XT+

RDNA 2.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

7 nm

Process Size

5 nm

11.06 billion

Transistors

57.7 billion

237 mm²

Die Size

529 mm²

Board Design

160W

TDP

300W

450 W

Suggested PSU

700 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

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

1x 8-pin

Power Connectors

2x 8-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

2.2

1.3

Vulkan

1.3

-

CUDA

-

6.7

Shader Model

6.7

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