AMD Radeon RX 640 Mobile vs NVIDIA GeForce GTX 680M

VS

AMD Radeon RX 640 Mobile

NVIDIA GeForce GTX 680M

We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 4GB VRAM GeForce GTX 680M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 640 Mobile 's Advantages

Released 6 years and 11 months late

Boost Clock has increased by 61% (1218MHz vs 758MHz)

Lower TDP (50W vs 100W)

NVIDIA GeForce GTX 680M 's Advantages

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (115.2GB/s vs 48.00GB/s)

704 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 640 Mobile

1.559 TFLOPS

GeForce GTX 680M +30%

2.038 TFLOPS

Radeon RX 640 Mobile

VS

GeForce GTX 680M

Graphics Card

May 2019

Release Date

Jun 2012

Mobility Radeon

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

1082 MHz

Base Clock

719 MHz

1218 MHz

Boost Clock

758 MHz

1500 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

256bit

48.00GB/s

Bandwidth

115.2GB/s

Render Config

10

Compute Units

-

640

Shading Units

1344

40

TMUs

112

16

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

19.49 GPixel/s

Pixel Rate

21.22 GPixel/s

48.72 GTexel/s

Texture Rate

84.90 GTexel/s

1.559 TFLOPS

FP16 (half)

-

1.559 TFLOPS

FP32 (float)

2.038 TFLOPS

97.44 GFLOPS

FP64 (double)

84.90 GFLOPS

Board Design

50W

TDP

100W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Polaris 23

GPU Name

GK104

Polaris 23 XT

GPU Variant

N13E-GTX-A2

GCN 4.0

Architecture

Kepler

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

2.2 billion

Transistors

3.54 billion

103 mm²

Die Size

294 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

6.4

Shader Model

5.1

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