AMD Radeon HD 7970 GHz Edition vs NVIDIA GeForce 8400 GS PCI Rev. 2

VS

AMD Radeon HD 7970 GHz Edition NVIDIA GeForce 8400 GS PCI Rev. 2

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 GHz Edition and 512MB VRAM GeForce 8400 GS PCI Rev. 2 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 5 years and 2 months late

Boost Clock1050MHz

Larger VRAM bandwidth (288.0GB/s vs 8.000GB/s)

2032 additional rendering cores

NVIDIA GeForce 8400 GS PCI Rev. 2 's Advantages

Lower TDP (40W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 7970 GHz Edition +10928%

4.301 TFLOPS

GeForce 8400 GS PCI Rev. 2

0.039 TFLOPS

Radeon HD 7970 GHz Edition

VS

GeForce 8400 GS PCI Rev. 2

Graphics Card

Jun 2012

Release Date

Apr 2007

Southern Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCI

Clock Speeds

1000 MHz

Base Clock

-

1050 MHz

Boost Clock

-

1500 MHz

Memory Clock

500 MHz

Memory

3GB

Memory Size

512MB

GDDR5

Memory Type

DDR3

384bit

Memory Bus

64bit

288.0GB/s

Bandwidth

8.000GB/s

Render Config

-

SM Count

2

32

Compute Units

-

2048

Shading Units

16

128

TMUs

8

32

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

32 KB

Theoretical Performance

33.60 GPixel/s

Pixel Rate

2.080 GPixel/s

134.4 GTexel/s

Texture Rate

4.160 GTexel/s

-

FP16 (half)

-

4.301 TFLOPS

FP32 (float)

39.36 GFLOPS

1075 GFLOPS

FP64 (double)

-

Graphics Processor

Tahiti

GPU Name

GT218

Tahiti XT2 (215-0821065)

GPU Variant

-

GCN 1.0

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

0.26 billion

352 mm²

Die Size

57 mm²

Board Design

300W

TDP

40W

700 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1x VGA

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

11.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

1.2

5.1

Shader Model

4.1

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