Uncore
 | This article needs to be updated. (January 2017) |
"Uncore" is a term used by Intel to describe the functions of a microprocessor that are not in the core, but which must be closely connected to the core to achieve high performance.[1] It has been called "system agent" since the release of the Sandy Bridge microarchitecture.[2]
Details
Typical processor cores contains the components of the processor involved in executing instructions, including the
The Intel uncore design stems from its origin as the northbridge. The design of the Intel uncore reorganizes the functions critical to the core, making them physically closer to the core on-die, thereby reducing their access latency.
Specifically, the
Removal of serial bus controllers from the Intel uncore further enables increased performance by allowing the uncore clock (UCLK) to run at a base of 2.66 GHz, with overclocking limits in excess of 3.44 GHz.[6] This increased clock rate allows the core to access critical functions (such as the iMC) with significantly less latency, typically reducing core access times to DRAM by 10 ns or more.
References
- ^ "Ultrabook, SmartPhone, Laptop, Desktop, Server, & Embedded– Intel". Intel.com. Retrieved 2014-01-21.
- ^ Anand Lal Shimpi (September 14, 2010). "Intel's Sandy Bridge Architecture Exposed". AnandTech. Retrieved July 15, 2015.
- ^ "Thunderbolt™ Technology for Developers". Intel.com. 2014-01-13. Retrieved 2014-01-21.
- ^ "Nehalem: The Unwritten Chapters". AnandTech. Retrieved 2014-01-21.
- ^ "Intel(R) Xeon(R) Processor 7500 Series Uncore Programming Guide" (PDF). Retrieved 2014-01-30.
- ^ Yus, Carlos (2011-01-27). "HighPerformanceSystems: Intel Sandy Bridge out of specification 4.0, 4.4 and 4.6 GHz. Updated – HighPerformanceSystems". Highperformancesystems.blogspot.com. Retrieved 2014-01-21.