AMD Radeon HD 6870 X2 vs NVIDIA GeForce GT 440 Mac Edition

VS

AMD Radeon HD 6870 X2

NVIDIA GeForce GT 440 Mac Edition

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 X2 and 1024MB VRAM GeForce GT 440 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 X2 's Advantages

Larger VRAM bandwidth (134.4GB/s vs 21.34GB/s)

1024 additional rendering cores

NVIDIA GeForce GT 440 Mac Edition 's Advantages

Lower TDP (65W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 X2 +548%

2.016 TFLOPS

GeForce GT 440 Mac Edition

0.311 TFLOPS

Radeon HD 6870 X2

VS

GeForce GT 440 Mac Edition

Graphics Card

Jul 2011

Release Date

Feb 2011

Northern Islands

Generation

GeForce 400

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

667 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

21.34GB/s

Render Config

14

Compute Units

-

SM Count

2

1120

Shading Units

96

56

TMUs

16

32

ROPs

4

-

8 KB (per CU)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

3.240 GPixel/s

50.40 GTexel/s

Texture Rate

12.96 GTexel/s

-

2.016 TFLOPS

FP32 (float)

311.0 GFLOPS

-

FP64 (double)

25.92 GFLOPS

Board Design

300W

TDP

65W

700 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

-

Power Connectors

None

Graphics Processor

Barts

GPU Name

GF108

Barts XT (215-0798000)

GPU Variant

GF108-400-A1

TeraScale 2

Architecture

Fermi

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.7 billion

Transistors

0.585 billion

255 mm²

Die Size

116 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

5.0

Shader Model

5.1

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