AMD Radeon RX 640 Mobile: GPU Specs & Benchmarks

The Radeon RX 640 Mobile is a graphics card by AMD, built on the 14 nm process and based on the Polaris 23 graphics processor (GPU). The video card specifications and performance tests (benchmarks) are listed below.

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Graphics Processor (GPU)

GPU Name

Polaris 23

Model number

Polaris 23 XT

Architecture

GCN 4.0

Foundry

GlobalFoundries

Process Size

14 nm

Transistors

2,200 million

Die Size

103 mm²

Graphics Card

Release Date

May 13th, 2019

Family

Mobility Radeon
(M600)

Production

Active

Predecessor

Crystal System

Bus Interface

PCIe 3.0 x8

Memory

Memory Size

2 GB

Memory Type

GDDR5

Memory Bus

64 bit

Bandwidth

48.00 GB/s

Performance

Pixel fillrate

19.49 GPixel/s

Texture fillrate

48.72 GTexel/s

FP16 (half) performance

1.559 TFLOPS (1:1)

FP32 (float) performance

1.559 TFLOPS

FP64 (double) performance

97.44 GFLOPS (1:16)

Clock Speeds

Base Clock

1082 MHz

Boost Clock

1218 MHz

Memory Clock

1500 MHz
6 Gbps effective

Render Config

Shading Units

640

TMUs

40

ROPs

16

Compute Units

10

L1 Cache

16 KB (per CU)

L2 Cache

512 KB

Board Design

Slot Width

Dual-slot

Thermal design power (TDP)

50 W

Display Connectors

No outputs

Power Connectors

None

API support

DirectX

12 (12_0)

OpenGL

4.6

OpenCL

2.1

Vulkan

1.2

Shader Model

6.4