AMD Radeon R9 M395X vs AMD Radeon HD 8770M

VS

AMD Radeon R9 M395X

AMD Radeon HD 8770M

We compared two Mobile platform GPUs: 8GB VRAM Radeon R9 M395X and 2GB VRAM Radeon HD 8770M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M395X 's Advantages

Released 2 years and 1 months late

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (160.0GB/s vs 72.00GB/s)

1664 additional rendering cores

AMD Radeon HD 8770M 's Advantages

Boost Clock825MHz

Score

Benchmark

FP32 (float)

Radeon R9 M395X +367%

2.961 TFLOPS

Radeon HD 8770M

0.633 TFLOPS

Radeon R9 M395X

VS

Radeon HD 8770M

Graphics Card

May 2015

Release Date

Apr 2013

Crystal System

Generation

Solar System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

775 MHz

-

Boost Clock

825 MHz

1250 MHz

Memory Clock

1125 MHz

Memory

8GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

160.0GB/s

Bandwidth

72.00GB/s

Render Config

32

Compute Units

6

-

2048

Shading Units

384

128

TMUs

24

32

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

23.14 GPixel/s

Pixel Rate

6.600 GPixel/s

92.54 GTexel/s

Texture Rate

19.80 GTexel/s

2.961 TFLOPS

FP16 (half)

-

2.961 TFLOPS

FP32 (float)

633.6 GFLOPS

185.1 GFLOPS

FP64 (double)

39.60 GFLOPS

Board Design

75W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Processor

Amethyst

GPU Name

Mars

Amethyst XT

GPU Variant

Mars S3 XT (216-0842018)

GCN 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5 billion

Transistors

0.95 billion

366 mm²

Die Size

77 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.0

OpenCL

2.1 (1.2)

1.2

Vulkan

1.2.170

-

6.3

Shader Model

6.5 (5.1)

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