ATI Mobility Radeon HD 3870 vs AMD Radeon Pro 575X

VS

ATI Mobility Radeon HD 3870

AMD Radeon Pro 575X

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 4GB VRAM Radeon Pro 575X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 3870 's Advantages

Lower TDP (55W vs 150W)

AMD Radeon Pro 575X 's Advantages

Released 10 years and 9 months late

More VRAM (4GB vs 512GB)

Larger VRAM bandwidth (217.6GB/s vs 54.40GB/s)

1728 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870

0.422 TFLOPS

Radeon Pro 575X +963%

4.489 TFLOPS

Mobility Radeon HD 3870

VS

Radeon Pro 575X

Graphics Card

Jun 2008

Release Date

Mar 2019

M8x

Generation

Radeon Pro Mac

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

850 MHz

Memory Clock

1700 MHz

Memory

512MB

Memory Size

4GB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

256bit

54.40GB/s

Bandwidth

217.6GB/s

Render Config

4

Compute Units

32

-

320

Shading Units

2048

16

TMUs

128

16

ROPs

32

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

2 MB

-

Theoretical Performance

10.56 GPixel/s

Pixel Rate

35.07 GPixel/s

10.56 GTexel/s

Texture Rate

140.3 GTexel/s

-

FP16 (half)

4.489 TFLOPS

422.4 GFLOPS

FP32 (float)

4.489 TFLOPS

84.48 GFLOPS

FP64 (double)

280.6 GFLOPS

Board Design

55W

TDP

150W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

M88

GPU Name

Polaris 20

-

GPU Variant

Polaris 20 XL (215-0910052)

TeraScale

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

55 nm

Process Size

14 nm

0.666 billion

Transistors

5.7 billion

192 mm²

Die Size

232 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (12_0)

3.3

OpenGL

4.6

N/A

OpenCL

2.1

N/A

Vulkan

1.2

-

4.1

Shader Model

6.4

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