Radeon RX 480 vs Radeon HD 6870 X2

Radeon RX 480
Memory: 8192Mb GDDR5DESKTOP
Release date: 29 Jun 2016
Radeon RX 480
Radeon HD 6870 X2
Memory: 1024Mb GDDR5DESKTOP
Release date: 8 Jul 2011
Radeon HD 6870 X2


Reasons to consider Radeon RX 480

150 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 6870 X2 .
This is a much newer product, it might have better long term support.
Higher theoretical gaming performance, based on specifications.
Supports Direct3D 12 Async Compute.
Supports FreeSync.
Supports ReLive (allows game streaming/recording with minimum performance penalty).
Supports TrueAudio.

Reasons to consider Radeon HD 6870 X2

Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications.

Radeon RX 480

HWBench recommends Radeon RX 480

Based on theoretical specifications.


Core Configuration

Radeon RX 480Radeon HD 6870 X2
GPU NameEllesmere (Ellesmere XT)vsBarts (Barts XT)
Fab Process14 nmvs40 nm
Die Size232 mm²vs255 mm²
Transistors5,700 millionvs1,700 million
Compute Units36vs14
Core clock1120 MHzvs900 MHz

Memory Configuration

Radeon RX 480Radeon HD 6870 X2
Memory TypeGDDR5vsGDDR5
Bus Width256 bitvs256 bit x2
Memory Speed2000 MHz
8000 MHz effective
vs1050 MHz
4200 MHz effective
Memory Size8192 Mbvs1024 Mb

Additional details

Radeon RX 480Radeon HD 6870 X2
TDP150 wattsvs300 watts
Release Date29 Jun 2016vs8 Jul 2011

Raw Performance comparison

Pixel Rate

  • Radeon RX 480
    40.50 GP/s
  • Radeon HD 6870 X2
    57.60 GP/s

GigaPixels - higher is better

Texel Rate

  • Radeon RX 480
    182.30 GT/s
  • Radeon HD 6870 X2
    100.80 GT/s

GigaTexels - higher is better

Memory bandwidth

  • Radeon RX 480
    256.00 GB/s
  • Radeon HD 6870 X2
    268.00 GB/s

GB/s - higher is better

Single precision performance

  • Radeon RX 480
    5834.00 GFLOPs
  • Radeon HD 6870 X2
    4032.00 GFLOPs

GFLOPs - higher is better