NVIDIA GeForce 8400 GS Rev. 3 vs AMD Radeon HD 6790

VS

NVIDIA GeForce 8400 GS Rev. 3

AMD Radeon HD 6790

We compared two Desktop platform GPUs: 512MB VRAM GeForce 8400 GS Rev. 3 and 1024MB VRAM Radeon HD 6790 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 8400 GS Rev. 3 's Advantages

Lower TDP (25W vs 150W)

AMD Radeon HD 6790 's Advantages

Released 9 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (134.4GB/s vs 6.400GB/s)

792 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8400 GS Rev. 3

0.02 TFLOPS

Radeon HD 6790 +6620%

1.344 TFLOPS

GeForce 8400 GS Rev. 3

VS

Radeon HD 6790

Graphics Card

Jul 2010

Release Date

Apr 2011

GeForce 8

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

400 MHz

Memory Clock

1050 MHz

Memory

512MB

Memory Size

1024MB

DDR2

Memory Type

GDDR5

64bit

Memory Bus

256bit

6.400GB/s

Bandwidth

134.4GB/s

Render Config

-

Compute Units

10

1

SM Count

-

8

Shading Units

800

4

TMUs

40

4

ROPs

16

-

L1 Cache

8 KB (per CU)

32 KB

L2 Cache

512 KB

-

Theoretical Performance

2.080 GPixel/s

Pixel Rate

13.44 GPixel/s

2.080 GTexel/s

Texture Rate

33.60 GTexel/s

-

19.68 GFLOPS

FP32 (float)

1344 GFLOPS

-

Board Design

25W

TDP

150W

200 W

Suggested PSU

450 W

1x DVI 1x VGA 1x S-Video

Outputs

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

None

Power Connectors

2x 6-pin

Graphics Processor

GT218

GPU Name

Barts

8400GS-225-B1

GPU Variant

Barts LE (215-0798002)

Tesla 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.26 billion

Transistors

1.7 billion

57 mm²

Die Size

255 mm²

Graphics Features

11.1 (10_1)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

1.2

CUDA

-

4.1

Shader Model

5.0

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