AMD Radeon HD 8670A vs AMD Radeon 620 Mobile

VS

AMD Radeon HD 8670A

AMD Radeon 620 Mobile

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 8670A and 2GB VRAM Radeon 620 Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8670A 's Advantages

Larger VRAM bandwidth (16.00GB/s vs 14.40GB/s)

Lower TDP (45W vs 50W)

AMD Radeon 620 Mobile 's Advantages

Released 6 years and 3 months late

Boost Clock1024MHz

More VRAM (2GB vs 1024GB)

Score

Benchmark

FP32 (float)

Radeon HD 8670A

0.461 TFLOPS

Radeon 620 Mobile +70%

0.786 TFLOPS

Radeon HD 8670A

VS

Radeon 620 Mobile

Graphics Card

Feb 2013

Release Date

May 2019

All-In-One

Generation

Mobility Radeon

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

730 MHz

-

Boost Clock

1024 MHz

1000 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

DDR3

64bit

Memory Bus

64bit

16.00GB/s

Bandwidth

14.40GB/s

Render Config

6

Compute Units

6

-

384

Shading Units

384

24

TMUs

24

8

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

128 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

8.192 GPixel/s

14.40 GTexel/s

Texture Rate

24.58 GTexel/s

-

FP16 (half)

786.4 GFLOPS

460.8 GFLOPS

FP32 (float)

786.4 GFLOPS

28.80 GFLOPS

FP64 (double)

49.15 GFLOPS

Board Design

45W

TDP

50W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Mars

GPU Name

Polaris 24

Mars XT

GPU Variant

Polaris 24 XL

GCN 1.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.95 billion

Transistors

1.55 billion

77 mm²

Die Size

125 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.0

1.2

Vulkan

1.2

-

5.1

Shader Model

6.3

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