AMD Radeon HD 6870 vs NVIDIA GeForce GTX 1080

VS

AMD Radeon HD 6870

NVIDIA GeForce GTX 1080

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 8GB VRAM GeForce GTX 1080 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 's Advantages

Lower TDP (151W vs 180W)

NVIDIA GeForce GTX 1080 's Advantages

Released 5 years and 7 months late

Boost Clock1733MHz

More VRAM (8GB vs 1024GB)

Larger VRAM bandwidth (320.3GB/s vs 134.4GB/s)

1440 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6870

2.016 TFLOPS

GeForce GTX 1080 +340%

8.873 TFLOPS

Radeon HD 6870

VS

GeForce GTX 1080

Graphics Card

Oct 2010

Release Date

May 2016

Northern Islands

Generation

GeForce 10

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1607 MHz

-

Boost Clock

1733 MHz

1050 MHz

Memory Clock

1251 MHz

Memory

1024MB

Memory Size

8GB

GDDR5

Memory Type

GDDR5X

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

320.3GB/s

Render Config

14

Compute Units

-

SM Count

20

1120

Shading Units

2560

56

TMUs

160

32

ROPs

64

-

8 KB (per CU)

L1 Cache

48 KB (per SM)

512 KB

L2 Cache

2 MB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

110.9 GPixel/s

50.40 GTexel/s

Texture Rate

277.3 GTexel/s

-

FP16 (half)

138.6 GFLOPS

2.016 TFLOPS

FP32 (float)

8.873 TFLOPS

-

FP64 (double)

277.3 GFLOPS

Board Design

151W

TDP

180W

450 W

Suggested PSU

450 W

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

Outputs

1x DVI 1x HDMI 2.0 3x DisplayPort 1.4a

2x 6-pin

Power Connectors

1x 8-pin

Graphics Processor

Barts

GPU Name

GP104

Barts XT (215-0798000)

GPU Variant

GP104-400-A1

TeraScale 2

Architecture

Pascal

TSMC

Foundry

TSMC

40 nm

Process Size

16 nm

1.7 billion

Transistors

7.2 billion

255 mm²

Die Size

314 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_1)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.3

-

CUDA

6.1

5.0

Shader Model

6.4

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