AMD Radeon HD 6770 vs ATI Radeon HD 4670 X2

VS

AMD Radeon HD 6770

ATI Radeon HD 4670 X2

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6770 and 512MB VRAM Radeon HD 4670 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6770 's Advantages

Released 2 years and 4 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (76.80GB/s vs 22.40GB/s)

480 additional rendering cores

Lower TDP (108W vs 118W)

Score

Benchmark

FP32 (float)

Radeon HD 6770 +183%

1.36 TFLOPS

Radeon HD 4670 X2

0.48 TFLOPS

Radeon HD 6770

VS

Radeon HD 4670 X2

Graphics Card

Jan 2011

Release Date

Sep 2008

Northern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

700 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

128bit

76.80GB/s

Bandwidth

22.40GB/s

Render Config

10

Compute Units

4

-

800

Shading Units

320

40

TMUs

32

16

ROPs

8

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

13.60 GPixel/s

Pixel Rate

6.000 GPixel/s

34.00 GTexel/s

Texture Rate

24.00 GTexel/s

-

1360 GFLOPS

FP32 (float)

480.0 GFLOPS

-

Board Design

108W

TDP

118W

300 W

Suggested PSU

300 W

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

Outputs

4x DVI

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Juniper

GPU Name

RV730

Juniper XT (215-0754013)

GPU Variant

RV730 XT (215-0719047)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.04 billion

Transistors

0.514 billion

166 mm²

Die Size

146 mm²

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

-

5.0

Shader Model

4.1

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