NVIDIA GeForce 8400 vs ATI Radeon HD 3870 AGP

VS

NVIDIA GeForce 8400

ATI Radeon HD 3870 AGP

We compared two Desktop platform GPUs: 256MB VRAM GeForce 8400 and 512MB VRAM Radeon HD 3870 AGP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 8400 's Advantages

Lower TDP (25W vs 106W)

ATI Radeon HD 3870 AGP 's Advantages

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (72.06GB/s vs 8.000GB/s)

312 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8400

0.021 TFLOPS

Radeon HD 3870 AGP +2266%

0.497 TFLOPS

GeForce 8400

VS

Radeon HD 3870 AGP

Graphics Card

Dec 2007

Release Date

Unknown

GeForce 8

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

AGP 8x

Clock Speeds

-

500 MHz

Memory Clock

1126 MHz

Memory

256MB

Memory Size

512MB

DDR2

Memory Type

GDDR4

64bit

Memory Bus

256bit

8.000GB/s

Bandwidth

72.06GB/s

Render Config

-

Compute Units

4

1

SM Count

-

8

Shading Units

320

4

TMUs

16

4

ROPs

16

-

16 KB

L2 Cache

256 KB

-

Theoretical Performance

2.160 GPixel/s

Pixel Rate

12.43 GPixel/s

2.160 GTexel/s

Texture Rate

12.43 GTexel/s

-

20.80 GFLOPS

FP32 (float)

497.3 GFLOPS

-

FP64 (double)

99.46 GFLOPS

Board Design

25W

TDP

106W

200 W

Suggested PSU

300 W

1x DVI 1x VGA 1x S-Video

Outputs

2x DVI 1x S-Video

None

Power Connectors

1x 8-pin

Graphics Processor

G98

GPU Name

RV670

-

GPU Variant

RV670 XT (215-0708005)

Tesla

Architecture

TeraScale

TSMC

Foundry

TSMC

65 nm

Process Size

55 nm

0.21 billion

Transistors

0.666 billion

86 mm²

Die Size

192 mm²

Graphics Features

11.1 (10_0)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3 (full) 4.0 (partial)

1.1

OpenCL

N/A

Vulkan

N/A

1.1

CUDA

-

4.0

Shader Model

4.1

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