AMD Radeon HD 6870 vs AMD Radeon RX 460 1024SP

VS

AMD Radeon HD 6870

AMD Radeon RX 460 1024SP

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 2GB VRAM Radeon RX 460 1024SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 's Advantages

Larger VRAM bandwidth (134.4GB/s vs 112.0GB/s)

96 additional rendering cores

AMD Radeon RX 460 1024SP 's Advantages

Released 6 years and 3 months late

Boost Clock1200MHz

More VRAM (2GB vs 1024GB)

Lower TDP (75W vs 151W)

Score

Benchmark

FP32 (float)

Radeon HD 6870

2.016 TFLOPS

Radeon RX 460 1024SP +21%

2.458 TFLOPS

Radeon HD 6870

VS

Radeon RX 460 1024SP

Graphics Card

Oct 2010

Release Date

Jan 2017

Northern Islands

Generation

Arctic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1090 MHz

-

Boost Clock

1200 MHz

1050 MHz

Memory Clock

1750 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

112.0GB/s

Render Config

14

Compute Units

16

-

1120

Shading Units

1024

56

TMUs

64

32

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

1024 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

19.20 GPixel/s

50.40 GTexel/s

Texture Rate

76.80 GTexel/s

-

FP16 (half)

2.458 TFLOPS

2.016 TFLOPS

FP32 (float)

2.458 TFLOPS

-

FP64 (double)

153.6 GFLOPS

Board Design

151W

TDP

75W

450 W

Suggested PSU

250 W

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

Outputs

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

2x 6-pin

Power Connectors

None

Graphics Processor

Barts

GPU Name

Baffin

Barts XT (215-0798000)

GPU Variant

Baffin XT

TeraScale 2

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

40 nm

Process Size

14 nm

1.7 billion

Transistors

3 billion

255 mm²

Die Size

123 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.2

-

5.0

Shader Model

6.4

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