ATI Radeon HD 4770 vs ATI Radeon HD 4550

VS

ATI Radeon HD 4770

ATI Radeon HD 4550

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4770 and 256MB VRAM Radeon HD 4550 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4770 's Advantages

Released 7 months late

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (51.20GB/s vs 10.48GB/s)

560 additional rendering cores

ATI Radeon HD 4550 's Advantages

Lower TDP (25W vs 80W)

Score

Benchmark

FP32 (float)

Radeon HD 4770 +900%

0.96 TFLOPS

Radeon HD 4550

0.096 TFLOPS

Radeon HD 4770

VS

Radeon HD 4550

Graphics Card

Apr 2009

Release Date

Sep 2008

Radeon R700

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

655 MHz

Memory

512MB

Memory Size

256MB

GDDR5

Memory Type

DDR2

128bit

Memory Bus

64bit

51.20GB/s

Bandwidth

10.48GB/s

Render Config

8

Compute Units

1

-

640

Shading Units

80

32

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

64 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

2.400 GPixel/s

24.00 GTexel/s

Texture Rate

4.800 GTexel/s

-

960.0 GFLOPS

FP32 (float)

96.00 GFLOPS

192.0 GFLOPS

FP64 (double)

-

Board Design

80W

TDP

25W

250 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

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

1x 6-pin

Power Connectors

None

Graphics Processor

RV740

GPU Name

RV710

RV740 XT (215-0727019)

GPU Variant

RV710 (215-0725016)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

0.826 billion

Transistors

0.242 billion

137 mm²

Die Size

73 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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