Radeon RX Vega 64 vs Radeon HD 7870 XT

Radeon RX Vega 64
Memory: 8192Mb HBM2DESKTOP
Release date: 8 Aug 2017
Radeon RX Vega 64
Radeon HD 7870 XT
Memory: 2048Mb GDDR5DESKTOP
Release date: 19 Nov 2012
Radeon HD 7870 XT

Summary

Reasons to consider Radeon RX Vega 64

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
Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications

Reasons to consider Radeon HD 7870 XT

110 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon RX Vega 64 .
Supports Direct3D 12 Async Compute
Supports ReLive (allows game streaming/recording with minimum performance penalty)
Supports Mantle
Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications

Radeon RX Vega 64

HWBench recommends Radeon RX Vega 64

Based on theoretical specifications.


Specifications

Core Configuration

Radeon RX Vega 64Radeon HD 7870 XT
GPU NameVega 10 (Vega 10 XT)vsTahiti (Tahiti LE)
Fab Process14 nmvs28 nm
Die Size484 mm²vs352 mm²
Transistors12,500 millionvs4,313 million
Shaders4096vs1536
Compute Units64vs24
Core clock1250 MHzvs925 MHz
ROPs64vs32
TMUs256vs96

Memory Configuration

Radeon RX Vega 64Radeon HD 7870 XT
Memory TypeHBM2vsGDDR5
Bus Width2048 bitvs256 bit
Memory Speed945 MHz
1890 MHz effective
vs1500 MHz
6000 MHz effective
Memory Size8192 Mbvs2048 Mb

Additional details

Radeon RX Vega 64Radeon HD 7870 XT
TDP295 wattsvs185 watts
Release Date8 Aug 2017vs19 Nov 2012

Raw Performance comparison

Pixel Rate

  • Radeon RX Vega 64
    96.00 GP/s
  • Radeon HD 7870 XT
    29.60 GP/s

GigaPixels - higher is better

Texel Rate

  • Radeon RX Vega 64
    384.00 GT/s
  • Radeon HD 7870 XT
    88.80 GT/s

GigaTexels - higher is better

Memory bandwidth

  • Radeon RX Vega 64
    483.80 GB/s
  • Radeon HD 7870 XT
    192.00 GB/s

GB/s - higher is better

Single precision performance

  • Radeon RX Vega 64
    12288.00 GFLOPs
  • Radeon HD 7870 XT
    2842.00 GFLOPs

GFLOPs - higher is better