AMD Radeon RX 640 Mobile vs ATI Mobility Radeon HD 4850

VS

AMD Radeon RX 640 Mobile ATI Mobility Radeon HD 4850

We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 1024MB VRAM Mobility Radeon HD 4850 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 10 years and 4 months late

Boost Clock1218MHz

More VRAM (2GB vs 1GB)

ATI Mobility Radeon HD 4850 's Advantages

Larger VRAM bandwidth (54.40GB/s vs 48.00GB/s)

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 640 Mobile +93%

1.559 TFLOPS

Mobility Radeon HD 4850

0.804 TFLOPS

Radeon RX 640 Mobile

VS

Mobility Radeon HD 4850

Graphics Card

May 2019

Release Date

Jan 2009

Mobility Radeon

Generation

M9x

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

850 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR3

64bit

Memory Bus

256bit

48.00GB/s

Bandwidth

54.40GB/s

Render Config

-

SM Count

-

10

Compute Units

10

640

Shading Units

800

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

8.048 GPixel/s

48.72 GTexel/s

Texture Rate

20.12 GTexel/s

1.559 TFLOPS

FP16 (half)

-

1.559 TFLOPS

FP32 (float)

804.8 GFLOPS

97.44 GFLOPS

FP64 (double)

161.0 GFLOPS

Graphics Processor

Polaris 23

GPU Name

M98

Polaris 23 XT

GPU Variant

M98 L2 (216-0732019)

GCN 4.0

Architecture

TeraScale

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

55 nm

2.2 billion

Transistors

0.956 billion

103 mm²

Die Size

256 mm²

Board Design

50W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.1

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

-

6.4

Shader Model

4.1

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