NVIDIA GeForce GT 745A vs AMD Radeon RX 640 Mobile

VS

NVIDIA GeForce GT 745A

AMD Radeon RX 640 Mobile

We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 745A and 2GB VRAM Radeon RX 640 Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 745A 's Advantages

Lower TDP (33W vs 50W)

AMD Radeon RX 640 Mobile 's Advantages

Released 5 years and 9 months late

Boost Clock has increased by 33% (1218MHz vs 915MHz)

Larger VRAM bandwidth (48.00GB/s vs 28.80GB/s)

256 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 745A

0.703 TFLOPS

Radeon RX 640 Mobile +121%

1.559 TFLOPS

GeForce GT 745A

VS

Radeon RX 640 Mobile

Graphics Card

Aug 2013

Release Date

May 2019

GeForce 700A

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

837 MHz

Base Clock

1082 MHz

915 MHz

Boost Clock

1218 MHz

900 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

2GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

64bit

28.80GB/s

Bandwidth

48.00GB/s

Render Config

-

Compute Units

10

-

384

Shading Units

640

32

TMUs

40

16

ROPs

16

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

7.320 GPixel/s

Pixel Rate

19.49 GPixel/s

29.28 GTexel/s

Texture Rate

48.72 GTexel/s

-

FP16 (half)

1.559 TFLOPS

702.7 GFLOPS

FP32 (float)

1.559 TFLOPS

29.28 GFLOPS

FP64 (double)

97.44 GFLOPS

Board Design

33W

TDP

50W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

GK107

GPU Name

Polaris 23

N14P-LP

GPU Variant

Polaris 23 XT

Kepler

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

1.27 billion

Transistors

2.2 billion

118 mm²

Die Size

103 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

6.4

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