AMD Radeon R9 M385 vs AMD Radeon HD 8670A

VS

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M385 and 1024MB VRAM Radeon HD 8670A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M385 's Advantages

Released 2 years and 3 months late

Boost Clock1000MHz

More VRAM (4GB vs 1GB)

Larger VRAM bandwidth (76.80GB/s vs 16.00GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M385 +288%

1.792 TFLOPS

Radeon HD 8670A

0.461 TFLOPS

Radeon R9 M385

VS

Radeon HD 8670A

Graphics Card

May 2015

Release Date

Feb 2013

Gem System

Generation

All-In-One

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-A (3.0)

Clock Speeds

900 MHz

Base Clock

-

1000 MHz

Boost Clock

-

1200 MHz

Memory Clock

1000 MHz

Memory

4GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

64bit

76.80GB/s

Bandwidth

16.00GB/s

Render Config

-

SM Count

-

14

Compute Units

6

896

Shading Units

384

56

TMUs

24

16

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

Theoretical Performance

16.00 GPixel/s

Pixel Rate

4.800 GPixel/s

56.00 GTexel/s

Texture Rate

14.40 GTexel/s

-

FP16 (half)

-

1.792 TFLOPS

FP32 (float)

460.8 GFLOPS

112.0 GFLOPS

FP64 (double)

28.80 GFLOPS

Graphics Processor

Strato

GPU Name

Mars

Strato XT

GPU Variant

Mars XT

GCN 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.08 billion

Transistors

0.95 billion

160 mm²

Die Size

77 mm²

Board Design

Unknown

TDP

45W

-

Suggested PSU

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

1.2.170

Vulkan

1.2

-

CUDA

-

6.5

Shader Model

5.1

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