AMD Radeon HD 6870 X2 vs ATI Radeon HD 4730 OEM

VS

AMD Radeon HD 6870 X2

ATI Radeon HD 4730 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 X2 and 1024MB VRAM Radeon HD 4730 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 X2 's Advantages

Released 2 years and 7 months late

Larger VRAM bandwidth (134.4GB/s vs 25.34GB/s)

800 additional rendering cores

ATI Radeon HD 4730 OEM 's Advantages

Lower TDP (110W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 X2 +371%

2.016 TFLOPS

Radeon HD 4730 OEM

0.428 TFLOPS

Radeon HD 6870 X2

VS

Radeon HD 4730 OEM

Graphics Card

Jul 2011

Release Date

Dec 2008

Northern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

396 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

25.34GB/s

Render Config

14

Compute Units

4

-

1120

Shading Units

320

56

TMUs

16

32

ROPs

16

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

256 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

10.70 GPixel/s

50.40 GTexel/s

Texture Rate

10.70 GTexel/s

-

2.016 TFLOPS

FP32 (float)

428.2 GFLOPS

-

FP64 (double)

85.63 GFLOPS

Board Design

300W

TDP

110W

700 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x S-Video

-

Graphics Processor

Barts

GPU Name

RV670

Barts XT (215-0798000)

GPU Variant

-

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.7 billion

Transistors

0.666 billion

255 mm²

Die Size

192 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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