VIA Unveils Isaiah x86 Processor Architecture
VIA Technologies today announced details of the VIA Isaiah Architecture, a new x86 processor architecture that will deliver significant boosts to the functionality and performance of desktop, mobile and ultra mobile PCs while minimizing power requirements, saving on battery life and enabling ultra compact system designs.
Designed from the ground up by the company's US-based processor design subsidiary, Centaur Technology Inc., the VIA Isaiah Architecture combines all the latest advances in x86 processor technology, including a 64-bit superscalar speculative out-of-order microarchitecture, high-performance multimedia computation, and a new virtual machine architecture. The first generation of Isaiah-based products will be pin-compatible with the VIA C7 processor family, enabling a smooth transition for system builders and providing them with an easy upgrade path for current designs.
The first processors implementing the VIA Isaiah Architecture will use proven 65 nanometer technology for greater power efficiency, which, combined with new enhanced power and thermal management capabilities, will ensure the best performance per watt on the market and help drive the rapidly emerging categories of green, silent and small form factor desktop PCs and home media centers, and ultra thin and light notebooks and mini-notes.
The VIA Isaiah Architecture has been specifically designed for small form factor mobile devices such as Mini-Notebooks and Ultra Mobile Devices. Its key highlights include the following:
- 64-bit Superscalar Speculative Out-Of-Order MicroArchitecture.
The VIA Isaiah Architecture comprises a host of advanced architectural features, including a superscalar and out of order architecture, macro-fusion and micro-fusion functionality, and sophisticated branch prediction, that significantly improve processor efficiency and performance. In addition, it also features a full and unrestricted 64-bit instruction set with plenty of headroom to support 64-bit operating systems and applications as they become available, and a new virtual machine architecture for running systems more securely and efficiently in virtual environments.
- High-Performance Computation and Media Processing.
As well as support for clock speeds of up to 2GHz in initial products and a high-speed, low power Front Side Bus scalable from 800MHz up to 1333MHz, the VIA Isaiah Architecture also has a highly-efficient cache subsystem with two 64KB L1 caches and 1MB exclusive L2 cache with 16-way associativity for more effective memory optimization.
For further enhanced multimedia performance, the VIA Isaiah Architecture also integrates the world’s fastest x86 processor Floating Point Unit (FPU) with the ability to execute four floating point adds and four multiplies per clock and also featuring a new algorithm that minimizes latency. Support for new SSE instructions and a 128-bit wide integer data path further boost multimedia performance.
- Advanced Power and Thermal Management.
To minimize energy consumption and reduce heat, the VIA Isaiah Architecture utilizes new low power circuit techniques and in addition to aggressive management of active power includes support for the new "C6" power state, in which power is turned off to the caches.
Extensive Adaptive PowerSaver Technology features further reduce power consumption and improve thermal management, including the unique TwinTurbo dual-PLL implementation, which acts like automatic transmission in permitting smooth transitions between activity states within one clock cycle, ensuring always-on service and minimize latency, as well as new mechanisms for managing the die temperature.
- Scalable Upgrade to VIA C7 Processor.
The VIA Isaiah Architecture is pin-to-pin compatible with the current VIA C7 processor family, enabling OEMs and motherboard makers to transition to the new architecture smoothly, and to fulfill a wider range of market segments with a single board or system design.
- VIA PadLock Hardware Security Features.
To enhance the confidentiality, integrity, and authenticity of electronic data, the VIA Isaiah Architecture incorporates industry-leading on-die hardware cryptographic acceleration features within the VIA PadLock Security Engine, including the world's best random number generator (RNG), an AES Encryption Engine, SHA-1 and SHA-256 hashing for secure message digests for data integrity, and a new specialized "secure execution mode" that includes features such as a secure on-chip memory area and encrypted instruction fetching.
Processors implementing the VIA Isaiah Architecture are expected to start shipping in the first half of 2008 and will be manufactured using an advanced, low-power 65 nanometer process.
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