NVIDIA GeForce 8400 GS Rev. 3 vs AMD Radeon HD 7870 GHz Edition

VS

NVIDIA GeForce 8400 GS Rev. 3 AMD Radeon HD 7870 GHz Edition

We compared two Desktop platform GPUs: 512MB VRAM GeForce 8400 GS Rev. 3 and 2GB VRAM Radeon HD 7870 GHz Edition 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 175W)

AMD Radeon HD 7870 GHz Edition 's Advantages

Released 1 years and 8 months late

Larger VRAM bandwidth (153.6GB/s vs 6.400GB/s)

1272 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8400 GS Rev. 3

0.02 TFLOPS

Radeon HD 7870 GHz Edition +12700%

2.56 TFLOPS

GeForce 8400 GS Rev. 3

VS

Radeon HD 7870 GHz Edition

Graphics Card

Jul 2010

Release Date

Mar 2012

GeForce 8

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

400 MHz

Memory Clock

1200 MHz

Memory

512MB

Memory Size

2GB

DDR2

Memory Type

GDDR5

64bit

Memory Bus

256bit

6.400GB/s

Bandwidth

153.6GB/s

Render Config

1

SM Count

-

Compute Units

20

8

Shading Units

1280

4

TMUs

80

4

ROPs

32

-

Tensor Cores

-

RT Cores

-

L1 Cache

16 KB (per CU)

32 KB

L2 Cache

512 KB

Theoretical Performance

2.080 GPixel/s

Pixel Rate

32.00 GPixel/s

2.080 GTexel/s

Texture Rate

80.00 GTexel/s

-

FP16 (half)

-

19.68 GFLOPS

FP32 (float)

2.560 TFLOPS

-

FP64 (double)

160.0 GFLOPS

Graphics Processor

GT218

GPU Name

Pitcairn

8400GS-225-B1

GPU Variant

Pitcairn XT (215-0828047)

Tesla 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.26 billion

Transistors

2.8 billion

57 mm²

Die Size

212 mm²

Board Design

25W

TDP

175W

200 W

Suggested PSU

450 W

1x DVI 1x VGA 1x S-Video

Outputs

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

None

Power Connectors

2x 6-pin

Graphics Features

11.1 (10_1)

DirectX

12 (11_1)

3.3

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

CUDA

-

4.1

Shader Model

5.1

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