Zenfone 3 Deluxe Snapdragon Comparison – 820 vs. 821 – How much better is the Snapdragon 821 model?

There are three different Zenfone 3 Deluxe models that you need to be aware of.

First, markets are now seeing a smaller, less robust, and less expensive Zenfone 3 Deluxe model (ZS550KL). We have already created an article which is a ZS570KL vs ZS550KL comparison here.

Next, you have 2 different top end Zenfone 3 Deluxe (ZS570KL) models. One is called the “Special Edition” (in most markets) and it features the fastest ARM processor on the planet, the Qualcomm Snapdragon 821 @ 2.34GHz. The main Zenfone 3 Deluxe model with the Snapdragon 820 @ 2.15GHz is no slouch either. Both of these phones are powerhouses in their own right.

The question you may be asking is, how much better is the ZS570KL Special Edition with the 256GB storage and Snapdragon 821 processor. How much faster  in benchmark comparisons? We hope to give you the answers you seek.

Not to complicate matters, but other variants of the Z570KL exist out there. The comparison below is with both phones having 6GB RAM. Do not confuse these benchmarks with the 32GB Storage/4GB RAM Zenfone 3 Deluxe variant found in certain markets.

In this article, thanks to some benchmark data from Sogi.com.tw, we can simplify their findings and give you the basic facts. Please keep in mind that some aspects may be lost in translation! We did our best here to present the data and hopefully it’s going to provide helpful information. We will correct information immediately upon discovery of inaccuracies.

How much better is the Zenfone 3 Deluxe Special Edition with Snapdragon 821?


  • 12% faster clock speed

Storage (256GB vs. 64GB)

  • 4X larger capacity


  • 5% faster


  • 19% higher overall benchmark score
    • 3D – 12% higher rating
    • UX (user experience) – 20% higher rating
    • CPU – 34% higher rating
    • RAM – 12% higher rating


  • Single-Core Score – 24% higher score
  • Multi-Core Score – 9% higher score


  • 5% increase

Vellamo v3.2.3

  • Multi-Core CPU – 3% higher score
  • Single Core CPU – 25% higher score
  • WebView – 15% higher score
  • Browser – 27% higher score


  • It’s so close we’re calling this a tie

Basemark X v1.1

  • Result 1 – less than 1% higher rating
  • Result 2 – 5% higher rating

Basemark OS II

  • System – 5% lower rating
  • Memory – 7% higher rating
  • Graphics – 2% lower rating
  • Web – less than 1% higher rating
  • Overall – less than 1% higher rating

3DMark v1.5.3285

  • Result 1 – 3% higher rating
  • Result 2 – 7% higher rating

How much more expensive is the Zenfone 3 Deluxe Special Edition?

We cannot do this comparison without adding in the price difference. This will be fairly accurate, although prices will be slightly different from market to market. We have found a general price difference which we have listed here. So ask yourself whether the extra storage and higher benchmark results make the higher price worthwhile to you.

The Zenfone 3 Deluxe Special Edition is around 19% (Europe) to 26% to 39% more expensive than the S820 model. We apologize for such a drastically different range of price differences, but it’s still a bit early for a more accurate price range. We can say it’s really going to vary from market to market.