AMD Radeon Pro 555X vs AMD Radeon HD 6770M Mac Edition

VS

AMD Radeon Pro 555X AMD Radeon HD 6770M Mac Edition

We compared two Mobile platform GPUs: 4GB VRAM Radeon Pro 555X and 512MB VRAM Radeon HD 6770M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro 555X 's Advantages

Released 7 years and 6 months late

Larger VRAM bandwidth (94.08GB/s vs 57.60GB/s)

288 additional rendering cores

AMD Radeon HD 6770M Mac Edition 's Advantages

Lower TDP (35W vs 75W)

Score

Benchmark

FP32 (float)

Radeon Pro 555X +100%

1.393 TFLOPS

Radeon HD 6770M Mac Edition

0.696 TFLOPS

Radeon Pro 555X

VS

Radeon HD 6770M Mac Edition

Graphics Card

Jul 2018

Release Date

Jan 2011

Radeon Pro Mac

Generation

Vancouver

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-A (3.0)

Clock Speeds

-

Base Clock

-

Boost Clock

-

1470 MHz

Memory Clock

900 MHz

Memory

4GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

94.08GB/s

Bandwidth

57.60GB/s

Render Config

-

SM Count

-

12

Compute Units

6

768

Shading Units

480

48

TMUs

24

16

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

1024 KB

L2 Cache

256 KB

Theoretical Performance

14.51 GPixel/s

Pixel Rate

5.800 GPixel/s

43.54 GTexel/s

Texture Rate

17.40 GTexel/s

1393 GFLOPS

FP16 (half)

-

1393 GFLOPS

FP32 (float)

696.0 GFLOPS

87.07 GFLOPS

FP64 (double)

-

Graphics Processor

Polaris 21

GPU Name

Whistler

Polaris 21 PRO

GPU Variant

Whistler XT (216-0810001)

GCN 4.0

Architecture

TeraScale 2

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

3 billion

Transistors

0.716 billion

123 mm²

Die Size

104 mm²

Board Design

75W

TDP

35W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

6.4

Shader Model

5.0

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