NVIDIA GeForce GTX 490 vs NVIDIA GeForce 8400 GS

VS

NVIDIA GeForce GTX 490

NVIDIA GeForce 8400 GS

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 490 and 256MB VRAM GeForce 8400 GS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 490 's Advantages

More VRAM (1536GB vs 256GB)

Larger VRAM bandwidth (164.0GB/s vs 6.400GB/s)

464 additional rendering cores

NVIDIA GeForce 8400 GS 's Advantages

Lower TDP (40W vs 365W)

Score

Benchmark

FP32 (float)

GeForce GTX 490 +3920%

1.166 TFLOPS

GeForce 8400 GS

0.029 TFLOPS

GeForce GTX 490

VS

GeForce 8400 GS

Graphics Card

Unknown

Release Date

Apr 2007

GeForce 400

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

854 MHz

Memory Clock

400 MHz

Memory

1536MB

Memory Size

256MB

GDDR5

Memory Type

DDR2

384bit

Memory Bus

64bit

164.0GB/s

Bandwidth

6.400GB/s

Render Config

-

15

SM Count

2

480

Shading Units

16

60

TMUs

8

48

ROPs

4

-

64 KB (per SM)

L1 Cache

-

768 KB

L2 Cache

16 KB

-

Theoretical Performance

18.24 GPixel/s

Pixel Rate

1.836 GPixel/s

36.48 GTexel/s

Texture Rate

3.672 GTexel/s

-

1166 GFLOPS

FP32 (float)

29.38 GFLOPS

145.8 GFLOPS

FP64 (double)

-

Board Design

365W

TDP

40W

750 W

Suggested PSU

200 W

3x DVI 1x mini-DisplayPort

Outputs

1x DVI 1x VGA 1x S-Video

2x 8-pin

Power Connectors

None

Graphics Processor

GF100

GPU Name

G86

GF100-375-A3

GPU Variant

G86-213-A2

Fermi

Architecture

Tesla

TSMC

Foundry

TSMC

40 nm

Process Size

80 nm

3.1 billion

Transistors

0.21 billion

529 mm²

Die Size

127 mm²

Graphics Features

12 (11_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

2.0

CUDA

1.1

5.1

Shader Model

4.0

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