AMD Radeon RX 6600 vs AMD Radeon RX 6800 XT

VS

AMD Radeon RX 6600 AMD Radeon RX 6800 XT

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 and 16GB VRAM Radeon RX 6800 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600 's Advantages

Released 1 years late

Boost Clock has increased by 11% (2491MHz vs 2250MHz)

Lower TDP (132W vs 300W)

AMD Radeon RX 6800 XT 's Advantages

More VRAM (16GB vs 8GB)

Larger VRAM bandwidth (512.0GB/s vs 224.0GB/s)

2816 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6600

8.928 TFLOPS

Radeon RX 6800 XT +132%

20.74 TFLOPS

3DMark Time Spy

Radeon RX 6600

8081

Radeon RX 6800 XT +140%

19428

Shadow of the Tomb Raider 2160p

Radeon RX 6600

34

Radeon RX 6800 XT +111%

72

Shadow of the Tomb Raider 1440p

Radeon RX 6600

71

Radeon RX 6800 XT +88%

134

Shadow of the Tomb Raider 1080p

Radeon RX 6600

126

Radeon RX 6800 XT +49%

188

Cyberpunk 2077 2160p

Radeon RX 6600

24

Radeon RX 6800 XT +150%

60

Cyberpunk 2077 1440p

Radeon RX 6600

31

Radeon RX 6800 XT +122%

69

Cyberpunk 2077 1080p

Radeon RX 6600

50

Radeon RX 6800 XT +104%

102

Battlefield 5 2160p

Radeon RX 6600

44

Radeon RX 6800 XT +136%

104

Battlefield 5 1440p

Radeon RX 6600

98

Radeon RX 6800 XT +82%

179

Battlefield 5 1080p

Radeon RX 6600

127

Radeon RX 6800 XT +56%

199

GTA 5 2160p

Radeon RX 6600

60

Radeon RX 6800 XT +85%

111

GTA 5 1440p

Radeon RX 6600

66

Radeon RX 6800 XT +109%

138

GTA 5 1080p

Radeon RX 6600 +2%

182

Radeon RX 6800 XT

178

Radeon RX 6600

VS

Radeon RX 6800 XT

Graphics Card

Oct 2021

Release Date

Oct 2020

Navi II

Generation

Navi II

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 4.0 x16

Clock Speeds

1626 MHz

Base Clock

1825 MHz

2491 MHz

Boost Clock

2250 MHz

1750 MHz

Memory Clock

2000 MHz

Memory

8GB

Memory Size

16GB

GDDR6

Memory Type

GDDR6

128bit

Memory Bus

256bit

224.0GB/s

Bandwidth

512.0GB/s

Render Config

-

SM Count

-

28

Compute Units

72

1792

Shading Units

4608

112

TMUs

288

64

ROPs

128

-

Tensor Cores

-

28

RT Cores

72

128 KB per Array

L1 Cache

128 KB per Array

2 MB

L2 Cache

4 MB

Theoretical Performance

159.4 GPixel/s

Pixel Rate

288.0 GPixel/s

279.0 GTexel/s

Texture Rate

648.0 GTexel/s

17.86 TFLOPS

FP16 (half)

41.47 TFLOPS

8.928 TFLOPS

FP32 (float)

20.74 TFLOPS

558.0 GFLOPS

FP64 (double)

1296 GFLOPS

Graphics Processor

Navi 23

GPU Name

Navi 21

Navi 23 XL (215-130000016)

GPU Variant

Navi 21 XT (215-121000177)

RDNA 2.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

7 nm

Process Size

7 nm

11.06 billion

Transistors

26.8 billion

237 mm²

Die Size

520 mm²

Board Design

132W

TDP

300W

300 W

Suggested PSU

700 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x HDMI 2.1 2x DisplayPort 1.4a 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

2.1

1.3

Vulkan

1.3

-

CUDA

-

6.5

Shader Model

6.5

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