31-01-2013, 12:58 PM
COMPARISON BETWEEN ATOM PROCESSOR & INTEL ATOM PROCESSOR
1COMPARISON BETWEEN ATOM.doc (Size: 33 KB / Downloads: 36)
INTRODUCTION
The Cortex A9 core has an approximate raw performance of 2.5 DMIPS/MHz. It can run at 2Ghz when produced on the 28nm GlobalFoundries process. This is 5000 DMIPS/core with an expected 10000 DMIPS for a dual core setup (MP CORE version).
Since it is more likely that the first A9 will be manufactured with a 40nm process, when we calculate with a 1.5 Ghz top frequency which would yield about 7500 DMIPS.
Performance wise, the new Atom N450 is only marginally better that the earlier Atom chips (5-10%) and several discussions report that the older Atoms get 2.5 DMIPS/Mhz, a 1.6 Ghz Atom yields about 4000 DMIPS. Pine View Atoms for netbooks (N450 descendants) are not planned to be made dual-core in the near future so we calculate with only one core.
All recent ARM chips include hardware decoders for H264 video while the N450/NM10 has no such capability. This means either choppy HD video from Youtube or an external H264 decoder chip (like the Broadcomm one or an Nvidia Ion like extension). Certain Cortex A9 SOCs promise multiple 1080p stream decoding in parallel (like the Tegra 2) without loading the general purpose ARM core. Moreover, in the case of the N450, the maximum output on hdmi is restricted to 1366×768 (1440×1050 for the analog vga out). So you can forget about viewing HD videos with your Atom netbook even if you have an external, HD monitor or TV.