AMD Radeon Pro 555X vs ATI Mobility Radeon HD 4870

VS

AMD Radeon Pro 555X ATI Mobility Radeon HD 4870

We compared two Mobile platform GPUs: 4GB VRAM Radeon Pro 555X and 512MB VRAM Mobility Radeon HD 4870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro 555X 's Advantages

Released 9 years and 6 months late

Larger VRAM bandwidth (94.08GB/s vs 56.83GB/s)

ATI Mobility Radeon HD 4870 's Advantages

32 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon Pro 555X +58%

1.393 TFLOPS

Mobility Radeon HD 4870

0.88 TFLOPS

Radeon Pro 555X

VS

Mobility Radeon HD 4870

Graphics Card

Jul 2018

Release Date

Jan 2009

Radeon Pro Mac

Generation

M9x

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1470 MHz

Memory Clock

888 MHz

Memory

4GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

256bit

94.08GB/s

Bandwidth

56.83GB/s

Render Config

-

SM Count

-

12

Compute Units

10

768

Shading Units

800

48

TMUs

40

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

256 KB

Theoretical Performance

14.51 GPixel/s

Pixel Rate

8.800 GPixel/s

43.54 GTexel/s

Texture Rate

22.00 GTexel/s

1393 GFLOPS

FP16 (half)

-

1393 GFLOPS

FP32 (float)

880.0 GFLOPS

87.07 GFLOPS

FP64 (double)

176.0 GFLOPS

Graphics Processor

Polaris 21

GPU Name

M98

Polaris 21 PRO

GPU Variant

M98 XT L2 (216-0732023)

GCN 4.0

Architecture

TeraScale

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

55 nm

3 billion

Transistors

0.956 billion

123 mm²

Die Size

256 mm²

Board Design

75W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

None

Graphics Features

12 (12_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.1

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

-

6.4

Shader Model

4.1

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