AMD Radeon RX 6800M vs NVIDIA GeForce GTX 660M

VS

AMD Radeon RX 6800M

NVIDIA GeForce GTX 660M

We compared two Mobile platform GPUs: 12GB VRAM Radeon RX 6800M and 1024MB VRAM GeForce GTX 660M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6800M 's Advantages

Released 9 years and 2 months late

Boost Clock has increased by 152% (2390MHz vs 950MHz)

More VRAM (12GB vs 1024GB)

Larger VRAM bandwidth (384.0GB/s vs 64.00GB/s)

2176 additional rendering cores

NVIDIA GeForce GTX 660M 's Advantages

Lower TDP (50W vs 145W)

Score

Benchmark

FP32 (float)

Radeon RX 6800M +1576%

12.24 TFLOPS

GeForce GTX 660M

0.73 TFLOPS

Radeon RX 6800M

VS

GeForce GTX 660M

Graphics Card

May 2021

Release Date

Mar 2012

Mobility Radeon

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

2116 MHz

Base Clock

835 MHz

2390 MHz

Boost Clock

950 MHz

2000 MHz

Memory Clock

1000 MHz

Memory

12GB

Memory Size

1024MB

GDDR6

Memory Type

GDDR5

192bit

Memory Bus

128bit

384.0GB/s

Bandwidth

64.00GB/s

Render Config

40

Compute Units

-

2560

Shading Units

384

160

TMUs

32

64

ROPs

16

-

40

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per SMX)

3 MB

L2 Cache

256 KB

96 MB

L3 Cache

-

Theoretical Performance

153.0 GPixel/s

Pixel Rate

7.600 GPixel/s

382.4 GTexel/s

Texture Rate

30.40 GTexel/s

24.47 TFLOPS

FP16 (half)

-

12.24 TFLOPS

FP32 (float)

729.6 GFLOPS

764.8 GFLOPS

FP64 (double)

30.40 GFLOPS

Board Design

145W

TDP

50W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Navi 22

GPU Name

GK107

Navi 22 XTM

GPU Variant

N13E-GE-A2

RDNA 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

17.2 billion

Transistors

1.27 billion

335 mm²

Die Size

118 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.3

Vulkan

1.1

-

CUDA

3.0

6.5

Shader Model

5.1

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