NVIDIA GeForce 8400 GS PCI Rev. 2 vs AMD Radeon HD 7870 GHz Edition

VS

NVIDIA GeForce 8400 GS PCI Rev. 2 AMD Radeon HD 7870 GHz Edition

We compared two Desktop platform GPUs: 512MB VRAM GeForce 8400 GS PCI Rev. 2 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 PCI Rev. 2 's Advantages

Lower TDP (40W vs 175W)

AMD Radeon HD 7870 GHz Edition 's Advantages

Released 4 years and 11 months late

Larger VRAM bandwidth (153.6GB/s vs 8.000GB/s)

1264 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8400 GS PCI Rev. 2

0.039 TFLOPS

Radeon HD 7870 GHz Edition +6464%

2.56 TFLOPS

GeForce 8400 GS PCI Rev. 2

VS

Radeon HD 7870 GHz Edition

Graphics Card

Apr 2007

Release Date

Mar 2012

GeForce 8

Generation

Southern Islands

Desktop

Type

Desktop

PCI

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

500 MHz

Memory Clock

1200 MHz

Memory

512MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

256bit

8.000GB/s

Bandwidth

153.6GB/s

Render Config

2

SM Count

-

Compute Units

20

16

Shading Units

1280

8

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

4.160 GTexel/s

Texture Rate

80.00 GTexel/s

-

FP16 (half)

-

39.36 GFLOPS

FP32 (float)

2.560 TFLOPS

-

FP64 (double)

160.0 GFLOPS

Graphics Processor

GT218

GPU Name

Pitcairn

-

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

40W

TDP

175W

200 W

Suggested PSU

450 W

1x DVI 1x HDMI 1x VGA

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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