AMD Radeon HD 7770 GHz Edition vs ATI Radeon HD 3850 X3

VS

AMD Radeon HD 7770 GHz Edition

ATI Radeon HD 3850 X3

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7770 GHz Edition and 512MB VRAM Radeon HD 3850 X3 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

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (72.00GB/s vs 54.40GB/s)

320 additional rendering cores

Lower TDP (80W vs 145W)

Score

Benchmark

FP32 (float)

Radeon HD 7770 GHz Edition +199%

1.28 TFLOPS

Radeon HD 3850 X3

0.428 TFLOPS

Radeon HD 7770 GHz Edition

VS

Radeon HD 3850 X3

Graphics Card

Feb 2012

Release Date

Unknown

Southern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1125 MHz

Memory Clock

850 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

256bit

72.00GB/s

Bandwidth

54.40GB/s

Render Config

10

Compute Units

4

-

640

Shading Units

320

40

TMUs

16

ROPs

16

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

256 KB

-

Theoretical Performance

16.00 GPixel/s

Pixel Rate

10.70 GPixel/s

40.00 GTexel/s

Texture Rate

10.70 GTexel/s

-

1280 GFLOPS

FP32 (float)

428.2 GFLOPS

80.00 GFLOPS

FP64 (double)

-

Board Design

80W

TDP

145W

250 W

Suggested PSU

300 W

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

Outputs

4x DVI

1x 6-pin

Power Connectors

1x 8-pin

Graphics Processor

Cape Verde

GPU Name

RV670

Cape Verde XT

GPU Variant

RV670 PRO (215-0708003)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

1.5 billion

Transistors

0.666 billion

123 mm²

Die Size

192 mm²

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.1

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