ATI Radeon HD 3870 Mac Edition vs NVIDIA GeForce 8400 GS Rev. 2

VS

ATI Radeon HD 3870 Mac Edition

NVIDIA GeForce 8400 GS Rev. 2

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 512MB VRAM GeForce 8400 GS Rev. 2 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

Released 6 months late

Larger VRAM bandwidth (72.06GB/s vs 6.400GB/s)

312 additional rendering cores

NVIDIA GeForce 8400 GS Rev. 2 's Advantages

Lower TDP (25W vs 106W)

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition +2159%

0.497 TFLOPS

GeForce 8400 GS Rev. 2

0.022 TFLOPS

Radeon HD 3870 Mac Edition

VS

GeForce 8400 GS Rev. 2

Graphics Card

Jun 2008

Release Date

Dec 2007

Radeon R600

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1126 MHz

Memory Clock

400 MHz

Memory

512MB

Memory Size

512MB

GDDR4

Memory Type

DDR2

256bit

Memory Bus

64bit

72.06GB/s

Bandwidth

6.400GB/s

Render Config

4

Compute Units

-

SM Count

1

320

Shading Units

8

16

TMUs

4

16

ROPs

4

-

256 KB

L2 Cache

16 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

2.268 GPixel/s

12.43 GTexel/s

Texture Rate

2.268 GTexel/s

-

497.3 GFLOPS

FP32 (float)

22.40 GFLOPS

99.46 GFLOPS

FP64 (double)

-

Board Design

106W

TDP

25W

300 W

Suggested PSU

200 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

G98

RV670 XT (215-0708005)

GPU Variant

-

TeraScale

Architecture

Tesla

TSMC

Foundry

TSMC

55 nm

Process Size

65 nm

0.666 billion

Transistors

0.21 billion

192 mm²

Die Size

86 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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