AMD Radeon 620 Mobile vs ATI Mobility Radeon HD 3850 X2

VS

AMD Radeon 620 Mobile ATI Mobility Radeon HD 3850 X2

We compared two Mobile platform GPUs: 2GB VRAM Radeon 620 Mobile and 512MB VRAM Mobility Radeon HD 3850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon 620 Mobile 's Advantages

Released 10 years and 11 months late

Boost Clock1024MHz

64 additional rendering cores

Lower TDP (50W vs 70W)

ATI Mobility Radeon HD 3850 X2 's Advantages

Larger VRAM bandwidth (48.00GB/s vs 14.40GB/s)

Score

Benchmark

FP32 (float)

Radeon 620 Mobile +111%

0.786 TFLOPS

Mobility Radeon HD 3850 X2

0.371 TFLOPS

Radeon 620 Mobile

VS

Mobility Radeon HD 3850 X2

Graphics Card

May 2019

Release Date

Jun 2008

Mobility Radeon

Generation

M8x

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

730 MHz

Base Clock

-

1024 MHz

Boost Clock

-

900 MHz

Memory Clock

750 MHz

Memory

2GB

Memory Size

512MB

DDR3

Memory Type

GDDR3

64bit

Memory Bus

256bit

14.40GB/s

Bandwidth

48.00GB/s

Render Config

-

SM Count

-

6

Compute Units

4

384

Shading Units

320

24

TMUs

16

8

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

-

128 KB

L2 Cache

256 KB

Theoretical Performance

8.192 GPixel/s

Pixel Rate

9.280 GPixel/s

24.58 GTexel/s

Texture Rate

9.280 GTexel/s

786.4 GFLOPS

FP16 (half)

-

786.4 GFLOPS

FP32 (float)

371.2 GFLOPS

49.15 GFLOPS

FP64 (double)

74.24 GFLOPS

Graphics Processor

Polaris 24

GPU Name

M88

Polaris 24 XL

GPU Variant

-

GCN 3.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

1.55 billion

Transistors

0.666 billion

125 mm²

Die Size

192 mm²

Board Design

50W

TDP

70W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.0

OpenCL

N/A

1.2

Vulkan

N/A

-

CUDA

-

6.3

Shader Model

4.1

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