AMD Radeon HD 7870 GHz Edition vs NVIDIA GeForce 9400 GT Rev. 2

VS

AMD Radeon HD 7870 GHz Edition

NVIDIA GeForce 9400 GT Rev. 2

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition and 512MB VRAM GeForce 9400 GT Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 GHz Edition 's Advantages

Released 3 years and 7 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (153.6GB/s vs 12.80GB/s)

1264 additional rendering cores

NVIDIA GeForce 9400 GT Rev. 2 's Advantages

Lower TDP (50W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 GHz Edition +5588%

2.56 TFLOPS

GeForce 9400 GT Rev. 2

0.045 TFLOPS

Radeon HD 7870 GHz Edition

VS

GeForce 9400 GT Rev. 2

Graphics Card

Mar 2012

Release Date

Aug 2008

Southern Islands

Generation

GeForce 9

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

400 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

153.6GB/s

Bandwidth

12.80GB/s

Render Config

20

Compute Units

-

SM Count

2

1280

Shading Units

16

80

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

32 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

2.200 GPixel/s

80.00 GTexel/s

Texture Rate

4.400 GTexel/s

-

2.560 TFLOPS

FP32 (float)

44.80 GFLOPS

160.0 GFLOPS

FP64 (double)

-

Board Design

175W

TDP

50W

450 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x VGA 1x S-Video

2x 6-pin

Power Connectors

None

Graphics Processor

Pitcairn

GPU Name

G96C

Pitcairn XT (215-0828047)

GPU Variant

-

GCN 1.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.8 billion

Transistors

0.314 billion

212 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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