ATI Radeon HD 5550 vs AMD Radeon HD 7870 XT

VS

ATI Radeon HD 5550

AMD Radeon HD 7870 XT

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 5550 and 2GB VRAM Radeon HD 7870 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 5550 's Advantages

Lower TDP (39W vs 185W)

AMD Radeon HD 7870 XT 's Advantages

Released 2 years and 9 months late

Boost Clock975MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (192.0GB/s vs 51.20GB/s)

1216 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 5550

0.352 TFLOPS

Radeon HD 7870 XT +750%

2.995 TFLOPS

Radeon HD 5550

VS

Radeon HD 7870 XT

Graphics Card

Feb 2010

Release Date

Nov 2012

Evergreen

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

975 MHz

800 MHz

Memory Clock

1500 MHz

Memory

512MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

51.20GB/s

Bandwidth

192.0GB/s

Render Config

4

Compute Units

24

-

320

Shading Units

1536

16

TMUs

96

8

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

4.400 GPixel/s

Pixel Rate

31.20 GPixel/s

8.800 GTexel/s

Texture Rate

93.60 GTexel/s

-

352.0 GFLOPS

FP32 (float)

2.995 TFLOPS

-

FP64 (double)

748.8 GFLOPS

Board Design

39W

TDP

185W

200 W

Suggested PSU

450 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

None

Power Connectors

2x 6-pin

Graphics Processor

Redwood

GPU Name

Tahiti

Redwood PRO2

GPU Variant

Tahiti LE (215-0821122)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.627 billion

Transistors

4.313 billion

104 mm²

Die Size

352 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

5.0

Shader Model

5.1

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