NVIDIA GeForce GTX 850A vs AMD Radeon RX 640 Mobile

VS

NVIDIA GeForce GTX 850A

AMD Radeon RX 640 Mobile

We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 850A 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 GTX 850A 's Advantages

Lower TDP (45W vs 50W)

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)

Score

Benchmark

FP32 (float)

GeForce GTX 850A

1.198 TFLOPS

Radeon RX 640 Mobile +30%

1.559 TFLOPS

GeForce GTX 850A

VS

Radeon RX 640 Mobile

Graphics Card

Mar 2014

Release Date

May 2019

GeForce 800A

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

902 MHz

Base Clock

1082 MHz

936 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

-

640

Shading Units

640

40

TMUs

40

16

ROPs

16

-

64 KB (per SMM)

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

512 KB

-

Theoretical Performance

14.98 GPixel/s

Pixel Rate

19.49 GPixel/s

37.44 GTexel/s

Texture Rate

48.72 GTexel/s

-

FP16 (half)

1.559 TFLOPS

1198 GFLOPS

FP32 (float)

1.559 TFLOPS

37.44 GFLOPS

FP64 (double)

97.44 GFLOPS

Board Design

45W

TDP

50W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

GM107

GPU Name

Polaris 23

N15P-GT-A1

GPU Variant

Polaris 23 XT

Maxwell

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

1.87 billion

Transistors

2.2 billion

148 mm²

Die Size

103 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.3

Vulkan

1.2

5.0

CUDA

-

5.1

Shader Model

6.4

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