AMD Radeon HD 8870 OEM vs NVIDIA GeForce 8400 GS Rev. 3

VS

AMD Radeon HD 8870 OEM

NVIDIA GeForce 8400 GS Rev. 3

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 8870 OEM and 512MB VRAM GeForce 8400 GS Rev. 3 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8870 OEM 's Advantages

Released 2 years and 6 months late

More VRAM (2GB vs 512GB)

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

1272 additional rendering cores

NVIDIA GeForce 8400 GS Rev. 3 's Advantages

Lower TDP (25W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 8870 OEM +12700%

2.56 TFLOPS

GeForce 8400 GS Rev. 3

0.02 TFLOPS

Radeon HD 8870 OEM

VS

GeForce 8400 GS Rev. 3

Graphics Card

Jan 2013

Release Date

Jul 2010

Sea Islands

Generation

GeForce 8

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

DDR2

256bit

Memory Bus

64bit

153.6GB/s

Bandwidth

6.400GB/s

Render Config

20

Compute Units

-

SM Count

1

1280

Shading Units

8

80

TMUs

4

32

ROPs

4

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

32 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

2.080 GPixel/s

80.00 GTexel/s

Texture Rate

2.080 GTexel/s

-

2.560 TFLOPS

FP32 (float)

19.68 GFLOPS

160.0 GFLOPS

FP64 (double)

-

Board Design

175W

TDP

25W

450 W

Suggested PSU

200 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

GT218

Pitcairn XT (215-0828047)

GPU Variant

8400GS-225-B1

GCN 1.0

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

0.26 billion

212 mm²

Die Size

57 mm²

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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