ATI Radeon HD 3870 Mac Edition vs NVIDIA GeForce 9400 GT PCI

VS

ATI Radeon HD 3870 Mac Edition

NVIDIA GeForce 9400 GT PCI

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 256MB VRAM GeForce 9400 GT PCI to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 3870 Mac Edition 's Advantages

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (72.06GB/s vs 12.80GB/s)

304 additional rendering cores

NVIDIA GeForce 9400 GT PCI 's Advantages

Lower TDP (50W vs 106W)

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition +1004%

0.497 TFLOPS

GeForce 9400 GT PCI

0.045 TFLOPS

Radeon HD 3870 Mac Edition

VS

GeForce 9400 GT PCI

Graphics Card

Jun 2008

Release Date

Aug 2008

Radeon R600

Generation

GeForce 9

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCI

Clock Speeds

-

1126 MHz

Memory Clock

400 MHz

Memory

512MB

Memory Size

256MB

GDDR4

Memory Type

DDR2

256bit

Memory Bus

128bit

72.06GB/s

Bandwidth

12.80GB/s

Render Config

4

Compute Units

-

SM Count

2

320

Shading Units

16

TMUs

8

16

ROPs

4

-

256 KB

L2 Cache

32 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

2.200 GPixel/s

12.43 GTexel/s

Texture Rate

4.400 GTexel/s

-

497.3 GFLOPS

FP32 (float)

44.80 GFLOPS

99.46 GFLOPS

FP64 (double)

-

Board Design

106W

TDP

50W

300 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

1x DVI 1x VGA 1x S-Video

1x 6-pin

Power Connectors

None

Graphics Processor

RV670

GPU Name

G96C

RV670 XT (215-0708005)

GPU Variant

-

TeraScale

Architecture

Tesla

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.666 billion

Transistors

0.314 billion

192 mm²

Die Size

121 mm²

Graphics Features

10.1 (10_1)

DirectX

11.1 (10_0)

3.3 (full) 4.0 (partial)

OpenGL

3.3

N/A

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.1

4.1

Shader Model

4.0

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