AMD Radeon HD 7770 GHz Edition vs ATI Radeon HD 4850

VS

AMD Radeon HD 7770 GHz Edition

ATI Radeon HD 4850

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7770 GHz Edition and 512MB VRAM Radeon HD 4850 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 3 years and 8 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (72.00GB/s vs 63.55GB/s)

Lower TDP (80W vs 110W)

ATI Radeon HD 4850 's Advantages

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7770 GHz Edition +28%

1.28 TFLOPS

Radeon HD 4850

1 TFLOPS

Radeon HD 7770 GHz Edition

VS

Radeon HD 4850

Graphics Card

Feb 2012

Release Date

Jun 2008

Southern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1125 MHz

Memory Clock

993 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

256bit

72.00GB/s

Bandwidth

63.55GB/s

Render Config

10

Compute Units

10

-

640

Shading Units

800

40

TMUs

40

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

16.00 GPixel/s

Pixel Rate

10.00 GPixel/s

40.00 GTexel/s

Texture Rate

25.00 GTexel/s

-

1280 GFLOPS

FP32 (float)

1000 GFLOPS

80.00 GFLOPS

FP64 (double)

200.0 GFLOPS

Board Design

80W

TDP

110W

250 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin

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

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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