NVIDIA GeForce 8400 vs AMD Radeon HD 6490

VS

NVIDIA GeForce 8400

AMD Radeon HD 6490

We compared two Desktop platform GPUs: 256MB VRAM GeForce 8400 and 1024MB VRAM Radeon HD 6490 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 39W)

AMD Radeon HD 6490 's Advantages

Released 3 years and 7 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (16.00GB/s vs 8.000GB/s)

312 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8400

0.021 TFLOPS

Radeon HD 6490 +1576%

0.352 TFLOPS

GeForce 8400

VS

Radeon HD 6490

Graphics Card

Dec 2007

Release Date

Jul 2011

GeForce 8

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

500 MHz

Memory Clock

500 MHz

Memory

256MB

Memory Size

1024MB

DDR2

Memory Type

DDR2

64bit

Memory Bus

128bit

8.000GB/s

Bandwidth

16.00GB/s

Render Config

-

Compute Units

4

1

SM Count

-

8

Shading Units

320

4

TMUs

16

4

ROPs

8

-

L1 Cache

8 KB (per CU)

16 KB

L2 Cache

256 KB

-

Theoretical Performance

2.160 GPixel/s

Pixel Rate

4.400 GPixel/s

2.160 GTexel/s

Texture Rate

8.800 GTexel/s

-

20.80 GFLOPS

FP32 (float)

352.0 GFLOPS

-

Board Design

25W

TDP

39W

200 W

Suggested PSU

200 W

1x DVI 1x VGA 1x S-Video

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

None

Power Connectors

None

Graphics Processor

G98

GPU Name

Redwood

-

GPU Variant

Redwood LE

Tesla

Architecture

TeraScale 2

TSMC

Foundry

TSMC

65 nm

Process Size

40 nm

0.21 billion

Transistors

0.627 billion

86 mm²

Die Size

104 mm²

Graphics Features

11.1 (10_0)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

1.1

CUDA

-

4.0

Shader Model

5.0

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