AMD Radeon RX 640 Mobile vs NVIDIA GeForce 705A

VS

AMD Radeon RX 640 Mobile

NVIDIA GeForce 705A

We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 1024MB VRAM GeForce 705A 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 4 years and 10 months late

Boost Clock1218MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (48.00GB/s vs 14.40GB/s)

592 additional rendering cores

NVIDIA GeForce 705A 's Advantages

Lower TDP (15W vs 50W)

Score

Benchmark

FP32 (float)

Radeon RX 640 Mobile +1613%

1.559 TFLOPS

GeForce 705A

0.091 TFLOPS

Radeon RX 640 Mobile

VS

GeForce 705A

Graphics Card

May 2019

Release Date

Jul 2014

Mobility Radeon

Generation

GeForce 700A

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1082 MHz

Base Clock

-

1218 MHz

Boost Clock

-

1500 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

64bit

Memory Bus

64bit

48.00GB/s

Bandwidth

14.40GB/s

Render Config

10

Compute Units

-

SM Count

1

640

Shading Units

48

40

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

19.49 GPixel/s

Pixel Rate

950.0 MPixel/s

48.72 GTexel/s

Texture Rate

3.800 GTexel/s

1.559 TFLOPS

FP16 (half)

-

1.559 TFLOPS

FP32 (float)

91.20 GFLOPS

97.44 GFLOPS

FP64 (double)

7.600 GFLOPS

Board Design

50W

TDP

15W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Polaris 23

GPU Name

GF119

Polaris 23 XT

GPU Variant

GF119 B1

GCN 4.0

Architecture

Fermi 2.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

2.2 billion

Transistors

0.292 billion

103 mm²

Die Size

79 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

6.4

Shader Model

5.1

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