ATI Radeon HD 3870 AGP vs NVIDIA GeForce 8400 GS

VS

ATI Radeon HD 3870 AGP NVIDIA GeForce 8400 GS

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

Main Differences

ATI Radeon HD 3870 AGP 's Advantages

More VRAM (512GB vs 256GB)

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

304 additional rendering cores

NVIDIA GeForce 8400 GS 's Advantages

Lower TDP (40W vs 106W)

Score

Benchmark

FP32 (float)

Radeon HD 3870 AGP +1613%

0.497 TFLOPS

GeForce 8400 GS

0.029 TFLOPS

Radeon HD 3870 AGP

VS

GeForce 8400 GS

Graphics Card

Unknown

Release Date

Apr 2007

Radeon R600

Generation

GeForce 8

Desktop

Type

Desktop

AGP 8x

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1126 MHz

Memory Clock

400 MHz

Memory

512MB

Memory Size

256MB

GDDR4

Memory Type

DDR2

256bit

Memory Bus

64bit

72.06GB/s

Bandwidth

6.400GB/s

Render Config

-

SM Count

2

4

Compute Units

-

320

Shading Units

16

TMUs

8

16

ROPs

4

-

Tensor Cores

-

RT Cores

-

L1 Cache

-

256 KB

L2 Cache

16 KB

Theoretical Performance

12.43 GPixel/s

Pixel Rate

1.836 GPixel/s

12.43 GTexel/s

Texture Rate

3.672 GTexel/s

-

FP16 (half)

-

497.3 GFLOPS

FP32 (float)

29.38 GFLOPS

99.46 GFLOPS

FP64 (double)

-

Graphics Processor

RV670

GPU Name

G86

RV670 XT (215-0708005)

GPU Variant

G86-213-A2

TeraScale

Architecture

Tesla

TSMC

Foundry

TSMC

55 nm

Process Size

80 nm

0.666 billion

Transistors

0.21 billion

192 mm²

Die Size

127 mm²

Board Design

106W

TDP

40W

300 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x VGA 1x S-Video

1x 8-pin

Power Connectors

None

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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