AMD Radeon RX 6800S vs NVIDIA GeForce GT 640M

VS

AMD Radeon RX 6800S NVIDIA GeForce GT 640M

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 6800S and 2GB VRAM GeForce GT 640M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6800S 's Advantages

Released 9 years and 10 months late

Boost Clock2100MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 28.80GB/s)

1664 additional rendering cores

NVIDIA GeForce GT 640M 's Advantages

Lower TDP (32W vs 100W)

Score

Benchmark

FP32 (float)

Radeon RX 6800S +1692%

8.602 TFLOPS

GeForce GT 640M

0.48 TFLOPS

Radeon RX 6800S

VS

GeForce GT 640M

Graphics Card

Jan 2022

Release Date

Mar 2012

Mobility Radeon

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1800 MHz

Base Clock

-

2100 MHz

Boost Clock

-

2000 MHz

Memory Clock

900 MHz

Memory

8GB

Memory Size

2GB

GDDR6

Memory Type

DDR3

128bit

Memory Bus

128bit

256.0GB/s

Bandwidth

28.80GB/s

Render Config

-

SM Count

-

32

Compute Units

-

2048

Shading Units

384

128

TMUs

32

64

ROPs

16

-

Tensor Cores

-

32

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per SMX)

2 MB

L2 Cache

256 KB

Theoretical Performance

134.4 GPixel/s

Pixel Rate

5.000 GPixel/s

268.8 GTexel/s

Texture Rate

20.00 GTexel/s

17.20 TFLOPS

FP16 (half)

-

8.602 TFLOPS

FP32 (float)

480.0 GFLOPS

537.6 GFLOPS

FP64 (double)

20.00 GFLOPS

Graphics Processor

Navi 23

GPU Name

GK107

-

GPU Variant

N13P-GS

RDNA 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

11.06 billion

Transistors

1.27 billion

237 mm²

Die Size

118 mm²

Board Design

100W

TDP

32W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

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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