AMD Radeon HD 7970 GHz Edition vs NVIDIA GeForce 9400 GT PCI

VS

AMD Radeon HD 7970 GHz Edition

NVIDIA GeForce 9400 GT PCI

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 GHz Edition and 256MB VRAM GeForce 9400 GT PCI to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970 GHz Edition 's Advantages

Released 3 years and 10 months late

Boost Clock1050MHz

More VRAM (3GB vs 256GB)

Larger VRAM bandwidth (288.0GB/s vs 12.80GB/s)

2032 additional rendering cores

NVIDIA GeForce 9400 GT PCI 's Advantages

Lower TDP (50W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 7970 GHz Edition +9457%

4.301 TFLOPS

GeForce 9400 GT PCI

0.045 TFLOPS

Radeon HD 7970 GHz Edition

VS

GeForce 9400 GT PCI

Graphics Card

Jun 2012

Release Date

Aug 2008

Southern Islands

Generation

GeForce 9

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCI

Clock Speeds

1000 MHz

Base Clock

-

1050 MHz

Boost Clock

-

1500 MHz

Memory Clock

400 MHz

Memory

3GB

Memory Size

256MB

GDDR5

Memory Type

DDR2

384bit

Memory Bus

128bit

288.0GB/s

Bandwidth

12.80GB/s

Render Config

32

Compute Units

-

SM Count

2

2048

Shading Units

16

128

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

32 KB

-

Theoretical Performance

33.60 GPixel/s

Pixel Rate

2.200 GPixel/s

134.4 GTexel/s

Texture Rate

4.400 GTexel/s

-

4.301 TFLOPS

FP32 (float)

44.80 GFLOPS

1075 GFLOPS

FP64 (double)

-

Board Design

300W

TDP

50W

700 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x VGA 1x S-Video

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

Tahiti

GPU Name

G96C

Tahiti XT2 (215-0821065)

GPU Variant

-

GCN 1.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

4.313 billion

Transistors

0.314 billion

352 mm²

Die Size

121 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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