AMD Radeon HD 6770 vs ATI Radeon HD 4770

VS

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6770 and 512MB VRAM Radeon HD 4770 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6770 's Advantages

Released 1 years and 9 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (76.80GB/s vs 51.20GB/s)

160 additional rendering cores

ATI Radeon HD 4770 's Advantages

Lower TDP (80W vs 108W)

Score

Benchmark

FP32 (float)

Radeon HD 6770 +41%

1.36 TFLOPS

Radeon HD 4770

0.96 TFLOPS

Radeon HD 6770

VS

Radeon HD 4770

Graphics Card

Jan 2011

Release Date

Apr 2009

Northern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1200 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

76.80GB/s

Bandwidth

51.20GB/s

Render Config

-

SM Count

-

10

Compute Units

8

800

Shading Units

640

40

TMUs

32

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

Theoretical Performance

13.60 GPixel/s

Pixel Rate

12.00 GPixel/s

34.00 GTexel/s

Texture Rate

24.00 GTexel/s

-

FP16 (half)

-

1360 GFLOPS

FP32 (float)

960.0 GFLOPS

-

FP64 (double)

192.0 GFLOPS

Graphics Processor

Juniper

GPU Name

RV740

Juniper XT (215-0754013)

GPU Variant

RV740 XT (215-0727019)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.04 billion

Transistors

0.826 billion

166 mm²

Die Size

137 mm²

Board Design

108W

TDP

80W

300 W

Suggested PSU

250 W

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

-

5.0

Shader Model

4.1

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