AMD Radeon HD 7770 GHz Edition vs ATI Radeon HD 4855

VS

AMD Radeon HD 7770 GHz Edition ATI Radeon HD 4855

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7770 GHz Edition and 512MB VRAM Radeon HD 4855 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 2 years and 1 months late

More VRAM (1024GB vs 512GB)

Lower TDP (80W vs 110W)

ATI Radeon HD 4855 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 72.00GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 7770 GHz Edition +73%

1.28 TFLOPS

Radeon HD 4855

0.736 TFLOPS

Radeon HD 7770 GHz Edition

VS

Radeon HD 4855

Graphics Card

Feb 2012

Release Date

Jan 2010

Southern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1125 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

72.00GB/s

Bandwidth

115.2GB/s

Render Config

-

SM Count

-

10

Compute Units

8

640

Shading Units

640

40

TMUs

32

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

16.00 GPixel/s

Pixel Rate

9.200 GPixel/s

40.00 GTexel/s

Texture Rate

18.40 GTexel/s

-

FP16 (half)

-

1280 GFLOPS

FP32 (float)

736.0 GFLOPS

80.00 GFLOPS

FP64 (double)

147.2 GFLOPS

Graphics Processor

Cape Verde

GPU Name

RV770

Cape Verde XT

GPU Variant

RV770 PRO (215-0669065)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

1.5 billion

Transistors

0.956 billion

123 mm²

Die Size

256 mm²

Board Design

80W

TDP

110W

250 W

Suggested PSU

300 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin

Power Connectors

1x 6-pin

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

-

CUDA

-

5.1

Shader Model

4.1

Related GPU Comparisons

1

AMD Radeon HD 7770 GHz Edition vs NVIDIA GeForce GTX 750 Ti

2

NVIDIA GeForce GTX 1070 vs AMD Radeon HD 7770 GHz Edition

3

NVIDIA GeForce GT 630 Rev. 2 PCIe x8 vs AMD Radeon HD 7770 GHz Edition

4

AMD Radeon HD 7770 GHz Edition vs AMD FirePro W4100

5

AMD FirePro S9000 vs AMD Radeon HD 7770 GHz Edition

6

AMD Radeon HD 7770 GHz Edition vs NVIDIA GeForce GTX 1080 11Gbps

7

NVIDIA GeForce RTX 3070 Ti 8 GB GA102 vs AMD Radeon HD 7770 GHz Edition

8

AMD Radeon HD 7770 GHz Edition vs ATI FirePro V7800

9

AMD Radeon HD 7770 GHz Edition vs NVIDIA A2

10

AMD Radeon HD 7770 GHz Edition vs ATI FirePro 2450 Multi View

Related News

1

AMD Ryzen 9000X3D Series to Feature Fully Unlocked Overclocking; DDR5-6400: The 'Sweet Spot' for Zen 5 Memory Speeds

2

Intel Z890 Motherboard Specs Leaked: Farewell to DDR4 Memory

3

AMD Ryzen 9000 Series Now Available for Pre-order in Europe: 9950X Priced at €660, Shipping by August 2

4

AMD's Latest Breakthrough Technology Could Change the Game in the Future

5

Researchers Utilize NVIDIA Omniverse Platform to Analyze and Improve 3D Stacked Chip Designs

6

TSMC to Receive Over 60 EUV Lithography Machines Over the Next Two Years, Investing More Than $12.3 Billion

7

Samsung's Own 3nm Yield is Disheartening: Galaxy S25 May Introduce MediaTek for the First Time

8

AMD Ryzen 9000 DDR5 Memory Frequency Soars: Reaches 8000MHz with All Four Slots Occupied

9

Snapdragon 8 Gen 4 to Feature Frame Interpolation for GPU: A Game-Changing Experience

10

Intel Adds 5 New Device IDs to Latest Linux Xe Kernel in Preparation for Battlemage