AMD Radeon HD 7770 GHz Edition vs ATI Radeon X1550

VS

AMD Radeon HD 7770 GHz Edition

ATI Radeon X1550

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7770 GHz Edition and 256MB VRAM Radeon X1550 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7770 GHz Edition 's Advantages

Released 5 years and 1 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (72.00GB/s vs 12.80GB/s)

640 additional rendering cores

ATI Radeon X1550 's Advantages

Lower TDP (27W vs 80W)

Score

Radeon HD 7770 GHz Edition

VS

Radeon X1550

Graphics Card

Feb 2012

Release Date

Jan 2007

Southern Islands

Generation

Radeon R500 PCIe

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1125 MHz

Memory Clock

400 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

DDR2

128bit

Memory Bus

128bit

72.00GB/s

Bandwidth

12.80GB/s

Render Config

10

Compute Units

-

640

Shading Units

-

40

TMUs

4

16

ROPs

4

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

-

Theoretical Performance

16.00 GPixel/s

Pixel Rate

2.200 GPixel/s

40.00 GTexel/s

Texture Rate

2.200 GTexel/s

-

1280 GFLOPS

FP32 (float)

-

80.00 GFLOPS

FP64 (double)

-

Board Design

80W

TDP

27W

250 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x VGA 1x S-Video

1x 6-pin

Power Connectors

None

Graphics Processor

Cape Verde

GPU Name

RV516

Cape Verde XT

GPU Variant

-

GCN 1.0

Architecture

R500

TSMC

Foundry

UMC

28 nm

Process Size

80 nm

1.5 billion

Transistors

0.107 billion

123 mm²

Die Size

100 mm²

Graphics Features

12 (11_1)

DirectX

9.0c (9_3)

4.6

OpenGL

2.1

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

3.0

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