AMD Radeon HD 7950 Boost vs NVIDIA GeForce 8400 SE

VS

AMD Radeon HD 7950 Boost

NVIDIA GeForce 8400 SE

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 Boost and 128MB VRAM GeForce 8400 SE to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7950 Boost 's Advantages

Released 3 years and 10 months late

Boost Clock925MHz

More VRAM (3GB vs 128GB)

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

1776 additional rendering cores

NVIDIA GeForce 8400 SE 's Advantages

Lower TDP (50W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 7950 Boost +11331%

3.315 TFLOPS

GeForce 8400 SE

0.029 TFLOPS

Radeon HD 7950 Boost

VS

GeForce 8400 SE

Graphics Card

Jun 2012

Release Date

Aug 2008

Southern Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

850 MHz

Base Clock

-

925 MHz

Boost Clock

-

1250 MHz

Memory Clock

400 MHz

Memory

3GB

Memory Size

128MB

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

29.60 GPixel/s

Pixel Rate

1.836 GPixel/s

103.6 GTexel/s

Texture Rate

3.672 GTexel/s

-

3.315 TFLOPS

FP32 (float)

29.38 GFLOPS

828.8 GFLOPS

FP64 (double)

-

Board Design

200W

TDP

50W

550 W

Suggested PSU

250 W

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

Outputs

1x DVI 1x VGA 1x S-Video

2x 6-pin

Power Connectors

None

Graphics Processor

Tahiti

GPU Name

G86S

Tahiti PRO2 (215-0821282)

GPU Variant

-

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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