ATI Radeon HD 5550 vs ATI Radeon HD 4870 Mac Edition

VS

ATI Radeon HD 5550

ATI Radeon HD 4870 Mac Edition

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 5550 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

ATI Radeon HD 5550 's Advantages

Released 1 years and 1 months late

Lower TDP (39W vs 150W)

ATI Radeon HD 4870 Mac Edition 's Advantages

Larger VRAM bandwidth (108.8GB/s vs 51.20GB/s)

480 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 5550

0.352 TFLOPS

Radeon HD 4870 Mac Edition +240%

1.2 TFLOPS

Radeon HD 5550

VS

Radeon HD 4870 Mac Edition

Graphics Card

Feb 2010

Release Date

Jan 2009

Evergreen

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

850 MHz

Memory

512MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

51.20GB/s

Bandwidth

108.8GB/s

Render Config

4

Compute Units

10

-

320

Shading Units

800

16

TMUs

40

8

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

4.400 GPixel/s

Pixel Rate

12.00 GPixel/s

8.800 GTexel/s

Texture Rate

30.00 GTexel/s

-

352.0 GFLOPS

FP32 (float)

1200 GFLOPS

-

FP64 (double)

240.0 GFLOPS

Board Design

39W

TDP

150W

200 W

Suggested PSU

450 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

1x DVI 1x mini-DisplayPort 1.0

None

Power Connectors

2x 6-pin

Graphics Processor

Redwood

GPU Name

RV770

Redwood PRO2

GPU Variant

RV770 XT Mac (215-0669080)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

0.627 billion

Transistors

0.956 billion

104 mm²

Die Size

256 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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