Intel Announces Atom™ - Silverthorne Launched
Intel's Smallest Processor Built Using World's Smallest Transistors Designed for New Internet Devices, Low-Cost PCs
Intel's new Atom processors are said to be fully code compatible with Intel's Core 2 Duo architecture but regardless, will have the ability scale down to an almost unnaturally miserly 30mW during idle conditions. At this point in time, the only solid challenger for Intel's new Atom processor is the VIA Isaiah chip. With Isaiah's 's 65nm fab process, 2GHz clock speed and full 1MB L2 cache, performance is no doubt going to give Atom a run for its money but the jury is still out on the chip's power consumption profile.
Isaiah is said to consume within range of the current VIA C7 CPU at around 7.5 watts. If this is the case, Intel's Silverthorne and Diamondville-based Atom designs will likely be sipping the corporate kool-aide a bit longer than Isaiah, possibly with over 2X the battery life. Though we'd caution that obviously, processing throughput of each architecture will of course weigh heavily on these metrics as well.
Atom Block Diagram
More here in Intel's ISSCC White Paper
Atom is an in-order processor capable of issuing 2 instructions per clock cycle and supports two threads. The processor also has 32K I-cache and 24KB D-cache (instruction and data L1 cache) and has independent floating point and integer execution units. In contrast, VIA's Isaiah is a three issue out of order architecture with 64K combined L1 cache. Again, we'll have to see how the architectures play out but without question Intel seems to have a power consumption edge, while VIA notably may have a few architectural advantages.
In 2008 the market is ripe for what Intel calls "nettops" or a new breed of internet-centric devices designed for ultra-portability and connectivity. The personal computing race is definitely heating up and it's seemingly getting more and more "personal" every day.