AMD Radeon Sky 900 vs NVIDIA GeForce 8400 GS

VS

AMD Radeon Sky 900

NVIDIA GeForce 8400 GS

We compared two Desktop platform GPUs: 3GB VRAM Radeon Sky 900 and 256MB VRAM GeForce 8400 GS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Sky 900 's Advantages

Released 5 years and 11 months late

Boost Clock950MHz

More VRAM (3GB vs 256GB)

Larger VRAM bandwidth (240.0GB/s vs 6.400GB/s)

1776 additional rendering cores

NVIDIA GeForce 8400 GS 's Advantages

Lower TDP (40W vs 300W)

Score

Benchmark

FP32 (float)

Radeon Sky 900 +11641%

3.405 TFLOPS

GeForce 8400 GS

0.029 TFLOPS

Radeon Sky 900

VS

GeForce 8400 GS

Graphics Card

Mar 2013

Release Date

Apr 2007

Radeon Sky

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

825 MHz

Base Clock

-

950 MHz

Boost Clock

-

1250 MHz

Memory Clock

400 MHz

Memory

3GB

Memory Size

256MB

GDDR5

Memory Type

DDR2

384bit

Memory Bus

64bit

240.0GB/s

Bandwidth

6.400GB/s

Render Config

28

Compute Units

-

SM Count

2

1792

Shading Units

16

112

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

16 KB

-

Theoretical Performance

30.40 GPixel/s

Pixel Rate

1.836 GPixel/s

106.4 GTexel/s

Texture Rate

3.672 GTexel/s

-

3.405 TFLOPS

FP32 (float)

29.38 GFLOPS

851.2 GFLOPS

FP64 (double)

-

Board Design

300W

TDP

40W

700 W

Suggested PSU

200 W

1x DVI 1x mini-DisplayPort 1.2

Outputs

1x DVI 1x VGA 1x S-Video

2x 8-pin

Power Connectors

None

Graphics Processor

Tahiti

GPU Name

G86

Orthrus

GPU Variant

G86-213-A2

GCN 1.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

4.313 billion

Transistors

0.21 billion

352 mm²

Die Size

127 mm²

Graphics Features

12 (11_1)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

1.1

5.1

Shader Model

4.0

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