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

VS

NVIDIA GeForce 8400 GS PCI AMD Radeon HD 7870 GHz Edition

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

Lower TDP (25W vs 175W)

AMD Radeon HD 7870 GHz Edition 's Advantages

Released 4 years and 3 months late

Larger VRAM bandwidth (153.6GB/s vs 5.328GB/s)

1272 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8400 GS PCI

0.022 TFLOPS

Radeon HD 7870 GHz Edition +11536%

2.56 TFLOPS

GeForce 8400 GS PCI

VS

Radeon HD 7870 GHz Edition

Graphics Card

Dec 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

-

333 MHz

Memory Clock

1200 MHz

Memory

512MB

Memory Size

2GB

DDR2

Memory Type

GDDR5

64bit

Memory Bus

256bit

5.328GB/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)

16 KB

L2 Cache

512 KB

Theoretical Performance

2.268 GPixel/s

Pixel Rate

32.00 GPixel/s

2.268 GTexel/s

Texture Rate

80.00 GTexel/s

-

FP16 (half)

-

22.40 GFLOPS

FP32 (float)

2.560 TFLOPS

-

FP64 (double)

160.0 GFLOPS

Graphics Processor

G98

GPU Name

Pitcairn

G98-400-U2

GPU Variant

Pitcairn XT (215-0828047)

Tesla

Architecture

GCN 1.0

TSMC

Foundry

TSMC

65 nm

Process Size

28 nm

0.21 billion

Transistors

2.8 billion

86 mm²

Die Size

212 mm²

Board Design

25W

TDP

175W

200 W

Suggested PSU

450 W

1x S-Video 1x DMS-59

Outputs

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

None

Power Connectors

2x 6-pin

Graphics Features

11.1 (10_0)

DirectX

12 (11_1)

3.3

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

1.1

CUDA

-

4.0

Shader Model

5.1

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