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

VS

ATI Radeon HD 4870 Mac Edition

AMD Radeon 550X 640SP

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 Mac Edition and 4GB VRAM Radeon 550X 640SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 Mac Edition 's Advantages

Larger VRAM bandwidth (108.8GB/s vs 48.00GB/s)

160 additional rendering cores

AMD Radeon 550X 640SP 's Advantages

Released 9 years and 3 months late

Boost Clock1071MHz

More VRAM (4GB vs 512GB)

Lower TDP (50W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 Mac Edition

1.2 TFLOPS

Radeon 550X 640SP +14%

1.371 TFLOPS

Radeon HD 4870 Mac Edition

VS

Radeon 550X 640SP

Graphics Card

Jan 2009

Release Date

Apr 2018

Radeon R700

Generation

Polaris

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1019 MHz

-

Boost Clock

1071 MHz

850 MHz

Memory Clock

1500 MHz

Memory

512MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

108.8GB/s

Bandwidth

48.00GB/s

Render Config

10

Compute Units

10

-

800

Shading Units

640

40

TMUs

40

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

17.14 GPixel/s

30.00 GTexel/s

Texture Rate

42.84 GTexel/s

-

FP16 (half)

1371 GFLOPS

1200 GFLOPS

FP32 (float)

1371 GFLOPS

240.0 GFLOPS

FP64 (double)

85.68 GFLOPS

Board Design

150W

TDP

50W

450 W

Suggested PSU

250 W

1x DVI 1x mini-DisplayPort 1.0

Outputs

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

2x 6-pin

Power Connectors

None

Graphics Processor

RV770

GPU Name

Lexa

RV770 XT Mac (215-0669080)

GPU Variant

Lexa PRO (215-0904018)

TeraScale

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

55 nm

Process Size

14 nm

0.956 billion

Transistors

2.2 billion

256 mm²

Die Size

103 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (12_0)

3.3

OpenGL

4.6

1.1

OpenCL

2.1

N/A

Vulkan

1.2

-

4.1

Shader Model

6.4

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