AMD Radeon HD 6870 1600SP Edition vs NVIDIA GeForce 8400 GS

VS

AMD Radeon HD 6870 1600SP Edition NVIDIA GeForce 8400 GS

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 1600SP Edition and 256MB VRAM GeForce 8400 GS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 1600SP Edition 's Advantages

Released 5 years and 9 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (134.4GB/s vs 6.400GB/s)

1584 additional rendering cores

NVIDIA GeForce 8400 GS 's Advantages

Lower TDP (40W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 1600SP Edition +9279%

2.72 TFLOPS

GeForce 8400 GS

0.029 TFLOPS

Radeon HD 6870 1600SP Edition

VS

GeForce 8400 GS

Graphics Card

Jan 2013

Release Date

Apr 2007

Northern Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1050 MHz

Memory Clock

400 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

64bit

134.4GB/s

Bandwidth

6.400GB/s

Render Config

-

SM Count

2

20

Compute Units

-

1600

Shading Units

16

80

TMUs

8

32

ROPs

4

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

16 KB

Theoretical Performance

27.20 GPixel/s

Pixel Rate

1.836 GPixel/s

68.00 GTexel/s

Texture Rate

3.672 GTexel/s

-

FP16 (half)

-

2.720 TFLOPS

FP32 (float)

29.38 GFLOPS

544.0 GFLOPS

FP64 (double)

-

Graphics Processor

Cypress

GPU Name

G86

Cypress XT (215-0735033)

GPU Variant

G86-213-A2

TeraScale 2

Architecture

Tesla

TSMC

Foundry

TSMC

40 nm

Process Size

80 nm

2.154 billion

Transistors

0.21 billion

334 mm²

Die Size

127 mm²

Board Design

175W

TDP

40W

450 W

Suggested PSU

200 W

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

Outputs

1x DVI 1x VGA 1x S-Video

2x 6-pin

Power Connectors

None

Graphics Features

11.2 (11_0)

DirectX

11.1 (10_0)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.1

5.0

Shader Model

4.0

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