AMD Radeon RX 640 Mobile vs NVIDIA GeForce GTX 850A

VS

AMD Radeon RX 640 Mobile NVIDIA GeForce GTX 850A

We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 2GB VRAM GeForce GTX 850A 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 5 years and 2 months late

Boost Clock has increased by 30% (1218MHz vs 936MHz)

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

NVIDIA GeForce GTX 850A 's Advantages

Lower TDP (45W vs 50W)

Score

Benchmark

FP32 (float)

Radeon RX 640 Mobile +30%

1.559 TFLOPS

GeForce GTX 850A

1.198 TFLOPS

Radeon RX 640 Mobile

VS

GeForce GTX 850A

Graphics Card

May 2019

Release Date

Mar 2014

Mobility Radeon

Generation

GeForce 800A

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1082 MHz

Base Clock

902 MHz

1218 MHz

Boost Clock

936 MHz

1500 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

64bit

Memory Bus

128bit

48.00GB/s

Bandwidth

28.80GB/s

Render Config

-

SM Count

-

10

Compute Units

-

640

Shading Units

640

40

TMUs

40

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

64 KB (per SMM)

512 KB

L2 Cache

2 MB

Theoretical Performance

19.49 GPixel/s

Pixel Rate

14.98 GPixel/s

48.72 GTexel/s

Texture Rate

37.44 GTexel/s

1.559 TFLOPS

FP16 (half)

-

1.559 TFLOPS

FP32 (float)

1198 GFLOPS

97.44 GFLOPS

FP64 (double)

37.44 GFLOPS

Graphics Processor

Polaris 23

GPU Name

GM107

Polaris 23 XT

GPU Variant

N15P-GT-A1

GCN 4.0

Architecture

Maxwell

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

2.2 billion

Transistors

1.87 billion

103 mm²

Die Size

148 mm²

Board Design

50W

TDP

45W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.2

Vulkan

1.3

-

CUDA

5.0

6.4

Shader Model

5.1

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