AMD Radeon HD 8770M vs AMD Radeon R9 M290X Mac Edition

VS

AMD Radeon HD 8770M

AMD Radeon R9 M290X Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 8770M and 2GB VRAM Radeon R9 M290X Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M290X Mac Edition 's Advantages

Released 1 years and 7 months late

Boost Clock has increased by 18% (975MHz vs 825MHz)

Larger VRAM bandwidth (174.7GB/s vs 72.00GB/s)

640 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8770M

0.633 TFLOPS

Radeon R9 M290X Mac Edition +215%

1.997 TFLOPS

Radeon HD 8770M

VS

Radeon R9 M290X Mac Edition

Graphics Card

Apr 2013

Release Date

Nov 2014

Solar System

Generation

Crystal System

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

775 MHz

Base Clock

850 MHz

825 MHz

Boost Clock

975 MHz

1125 MHz

Memory Clock

1365 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

72.00GB/s

Bandwidth

174.7GB/s

Render Config

6

Compute Units

16

-

384

Shading Units

1024

24

TMUs

64

8

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

6.600 GPixel/s

Pixel Rate

31.20 GPixel/s

19.80 GTexel/s

Texture Rate

62.40 GTexel/s

-

633.6 GFLOPS

FP32 (float)

1.997 TFLOPS

39.60 GFLOPS

FP64 (double)

124.8 GFLOPS

Board Design

Unknown

TDP

80W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Mars

GPU Name

Pitcairn

Mars S3 XT (216-0842018)

GPU Variant

Pitcairn PRO (215-0828062)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.95 billion

Transistors

2.8 billion

77 mm²

Die Size

212 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

1.2

1.2.170

Vulkan

1.2

-

6.5 (5.1)

Shader Model

5.1

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