AMD Radeon HD 7950 vs ATI Radeon HD 4550

VS

AMD Radeon HD 7950

ATI Radeon HD 4550

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 and 256MB VRAM Radeon HD 4550 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7950 's Advantages

Released 3 years and 4 months late

More VRAM (3GB vs 256GB)

Larger VRAM bandwidth (240.0GB/s vs 10.48GB/s)

1712 additional rendering cores

ATI Radeon HD 4550 's Advantages

Lower TDP (25W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 7950 +2886%

2.867 TFLOPS

Radeon HD 4550

0.096 TFLOPS

Radeon HD 7950

VS

Radeon HD 4550

Graphics Card

Jan 2012

Release Date

Sep 2008

Southern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

655 MHz

Memory

3GB

Memory Size

256MB

GDDR5

Memory Type

DDR2

384bit

Memory Bus

64bit

240.0GB/s

Bandwidth

10.48GB/s

Render Config

28

Compute Units

1

-

1792

Shading Units

80

112

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

64 KB

-

Theoretical Performance

25.60 GPixel/s

Pixel Rate

2.400 GPixel/s

89.60 GTexel/s

Texture Rate

4.800 GTexel/s

-

2.867 TFLOPS

FP32 (float)

96.00 GFLOPS

716.8 GFLOPS

FP64 (double)

-

Board Design

200W

TDP

25W

550 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x DisplayPort 1.0

2x 6-pin

Power Connectors

None

Graphics Processor

Tahiti

GPU Name

RV710

Tahiti PRO (215-0821056)

GPU Variant

RV710 (215-0725016)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

4.313 billion

Transistors

0.242 billion

352 mm²

Die Size

73 mm²

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

5.1

Shader Model

4.1

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