AMD Radeon RX 640 Mobile vs AMD Radeon R9 M275X

VS

AMD Radeon RX 640 Mobile AMD Radeon R9 M275X

We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 2GB VRAM Radeon R9 M275X 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 4 months late

Boost Clock has increased by 32% (1218MHz vs 925MHz)

AMD Radeon R9 M275X 's Advantages

Larger VRAM bandwidth (72.00GB/s vs 48.00GB/s)

Score

Benchmark

FP32 (float)

Radeon RX 640 Mobile +31%

1.559 TFLOPS

Radeon R9 M275X

1.184 TFLOPS

Radeon RX 640 Mobile

VS

Radeon R9 M275X

Graphics Card

May 2019

Release Date

Jan 2014

Mobility Radeon

Generation

Gem System

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1082 MHz

Base Clock

900 MHz

1218 MHz

Boost Clock

925 MHz

1500 MHz

Memory Clock

1125 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

128bit

48.00GB/s

Bandwidth

72.00GB/s

Render Config

-

SM Count

-

10

Compute Units

10

640

Shading Units

640

40

TMUs

40

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

19.49 GPixel/s

Pixel Rate

14.80 GPixel/s

48.72 GTexel/s

Texture Rate

37.00 GTexel/s

1.559 TFLOPS

FP16 (half)

-

1.559 TFLOPS

FP32 (float)

1184 GFLOPS

97.44 GFLOPS

FP64 (double)

74.00 GFLOPS

Graphics Processor

Polaris 23

GPU Name

Venus

Polaris 23 XT

GPU Variant

Venus XTX (216-0846033)

GCN 4.0

Architecture

GCN 1.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

2.2 billion

Transistors

1.5 billion

103 mm²

Die Size

123 mm²

Board Design

50W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

2.1 (1.2)

1.2

Vulkan

1.2.170

-

CUDA

-

6.4

Shader Model

6.5 (5.1)

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