AMD Radeon HD 8770M vs AMD Radeon R9 M485X

VS

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 8770M and 8GB VRAM Radeon R9 M485X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8770M 's Advantages

Boost Clock825MHz

AMD Radeon R9 M485X 's Advantages

Released 3 years and 1 months late

More VRAM (8GB vs 2GB)

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

1664 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8770M

0.633 TFLOPS

Radeon R9 M485X +367%

2.961 TFLOPS

Radeon HD 8770M

VS

Radeon R9 M485X

Graphics Card

Apr 2013

Release Date

May 2016

Solar System

Generation

Crystal System

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

775 MHz

Base Clock

-

825 MHz

Boost Clock

-

1125 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

72.00GB/s

Bandwidth

160.0GB/s

Render Config

-

SM Count

-

6

Compute Units

32

384

Shading Units

2048

24

TMUs

128

8

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

Theoretical Performance

6.600 GPixel/s

Pixel Rate

23.14 GPixel/s

19.80 GTexel/s

Texture Rate

92.54 GTexel/s

-

FP16 (half)

2.961 TFLOPS

633.6 GFLOPS

FP32 (float)

2.961 TFLOPS

39.60 GFLOPS

FP64 (double)

185.1 GFLOPS

Graphics Processor

Mars

GPU Name

Amethyst

Mars S3 XT (216-0842018)

GPU Variant

Amethyst XT

GCN 1.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.95 billion

Transistors

5 billion

77 mm²

Die Size

366 mm²

Board Design

Unknown

TDP

250W

-

Suggested PSU

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

2.0

1.2.170

Vulkan

1.2

-

CUDA

-

6.5 (5.1)

Shader Model

6.3

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