AMD Radeon RX 550 640SP vs ATI Radeon HD 4870 Mac Edition

VS

AMD Radeon RX 550 640SP

ATI Radeon HD 4870 Mac Edition

We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 550 640SP and 512MB VRAM Radeon HD 4870 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 550 640SP 's Advantages

Released 8 years and 9 months late

Boost Clock1071MHz

More VRAM (2GB vs 512GB)

Lower TDP (60W vs 150W)

ATI Radeon HD 4870 Mac Edition 's Advantages

Larger VRAM bandwidth (108.8GB/s vs 96.00GB/s)

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 550 640SP +14%

1.371 TFLOPS

Radeon HD 4870 Mac Edition

1.2 TFLOPS

Radeon RX 550 640SP

VS

Radeon HD 4870 Mac Edition

Graphics Card

Oct 2017

Release Date

Jan 2009

Polaris

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1019 MHz

Base Clock

-

1071 MHz

Boost Clock

-

1500 MHz

Memory Clock

850 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

96.00GB/s

Bandwidth

108.8GB/s

Render Config

10

Compute Units

10

-

640

Shading Units

800

40

TMUs

40

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

17.14 GPixel/s

Pixel Rate

12.00 GPixel/s

42.84 GTexel/s

Texture Rate

30.00 GTexel/s

1371 GFLOPS

FP16 (half)

-

1371 GFLOPS

FP32 (float)

1200 GFLOPS

85.68 GFLOPS

FP64 (double)

240.0 GFLOPS

Board Design

60W

TDP

150W

250 W

Suggested PSU

450 W

1x DVI 1x HDMI 2.0b 1x DisplayPort 1.4a

Outputs

1x DVI 1x mini-DisplayPort 1.0

None

Power Connectors

2x 6-pin

Graphics Processor

Baffin

GPU Name

RV770

Baffin LE

GPU Variant

RV770 XT Mac (215-0669080)

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

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

-

6.4

Shader Model

4.1

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