Helio X20 vs Snapdragon 820 comparison shows why the deca-core chip guns for the midrange
posted by Daniel P. / May 15, 2015, 2:39 AM
tri-cluster architecture - they bundled together two powerful Cortex-A72 units, clocked at 2.5 GHz, then four lowly Cortex-A53 pieces, running at 2 GHz maximums, then a quad pack of Cortex-A53s again, which had been clocked the lowest, at mere 1.4 GHz, for the unassuming tasks. Don't be fooled, though, the ten-core chipset is actually aimed at the upper midrange phones of the future, says MediaTek, as is suggested by the inclusion of only a pair of powerful Cortex-A72s, too.MediaTek achieved this deca-core status with the so-called
Looking at the direct comparison with Snapdragon 820 in the table below, it becomes clear why. The 820 sports four custom Kryo cores that are at least as powerful as ARM's standard Cortex-A72 architecture, and also features DDR4 RAM tech support, while the Helio X20 maxes out at DDR3. Snapdragon 820 also has a custom GPU that supports screens with higher resolution than the X20, as well as 4K video encoding at double the framerate of MediaTek's deca-core champ. Last but not least, Helio X20 is built with the 20nm process, against 14nm for Snapdragon 820, and Qualcomm has bundled its upcoming juggernaut with LTE Cat. 10 modem, while the X20 sports a Cat. 6 radio only.
it's competing with the 620. That was clear from the start. It can't even compete with the 7420, let alone 2016 chips.
posted on May 15, 2015, 3:00 AM 9
Posts: 167; Member since: Aug 25, 2014
The GPU will kill the one in the 7420, not too sure about the cpu performance. I am sure that whatever is packed into the Galaxy Note 5 will outperform everything. I am tired of Exynos and their inability to release sources to developers. The M9 sucks so bad that I had to pick the S6 but this lack of dev support is scary
posted on May 15, 2015, 9:29 AM 3
Posts: 130; Member since: Oct 28, 2014
Snapdragon 820 is going to ne a Beast, Qualcomm did mess things up in early 2015 but don't overestimate the Lion who is getting picked on.
posted on May 15, 2015, 3:25 AM 7
Posts: 167; Member since: Feb 22, 2013
posted on May 15, 2015, 4:44 AM 5
Posts: 175; Member since: May 15, 2012
are you sure SD820 is quad not octacore?
posted on May 15, 2015, 3:46 AM 0
Posts: 847; Member since: Oct 15, 2014
Dual cluster quad core Kryo doesn't make sense. If it can be clocked async like Kraits, it shouln't be implemented in clusters and even then clusters' clock speed differences is marginal.
posted on May 15, 2015, 5:21 AM 4
Posts: 48; Member since: Apr 02, 2015
Unless Kyro is a modified Cortex design instead of full custom core.
posted on May 15, 2015, 5:41 AM 0
Posts: 5552; Member since: Feb 10, 2013
IF Kyro is only a sightly modified Cortex design, it would be based on the A72s The A72s should be able to be clocked asynchronously, like the A57s, A15s and A7s (if I remember correctly) I suspect Qualcomm's 820 will be a quadcore with 4 Kryo cores, no more big.LITTLE from Qualcomm for now
posted on May 15, 2015, 6:34 AM 0
Posts: 952; Member since: Nov 22, 2014
Krait cores were only modified Cortex cores, yet they were brilliant. I think it's clear Quialcomm is ditching ARM's big.LITTLE architecture, they're switching to their own Zeroth platform. It doesn't mean that SD820 is going to have 4 cores, I wouldn't be suprised if it was octa-core.
posted on May 15, 2015, 7:08 AM 0
Posts: 48; Member since: Apr 02, 2015
I agree. big.LITTLE is quite stupid. It is needed only because Cortex A57 are made from mobiles to servers. Qualcomm on the other hand build Kyro only for mobiles so it's much more efficient in that scenario.
posted on May 15, 2015, 11:55 AM 1
Posts: 2135; Member since: Oct 18, 2011
S820 won't have dual cluster design...Qualcomm's CPU design are capable of async clock so no need to two clusters. Each core can be clocked separately based on load. While in ARM's design all active cores in cluster run at same clock.
posted on May 15, 2015, 8:09 AM 1
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