Ivy Bridge processors are backwards compatible with the Sandy Bridge platform, but such systems might require a firmware update (vendor specific).[1] In 2011, Intel released the 7-series Panther Point chipsets with integrated USB 3.0 to complement Ivy Bridge.
Volume production of Ivy Bridge chips began in the third quarter of 2011. Quad-core and dual-core-mobile models launched on April 29, 2012 and May 31, 2012 respectively. Core i3 desktop processors, as well as the first 22 nm Pentium, were announced and available the first week of September, 2012.
Overview
The Ivy Bridge CPU microarchitecture is a shrink from Sandy Bridge and remains largely unchanged.
Notable improvements include:
1.22 nm Tri-gate transistor ("3-D") technology (up to 50% less power consumption at the same performance level as 2-D planar transistors).
2.A new random number generator and the RdRand instruction, codenamed Bull Mountain
Ivy Bridge features and performance
The mobile and desktop Ivy Bridge chips also include significant changes over Sandy Bridge:
1.F16C (16-bit Floating-point conversion instructions).
2.RdRand instruction (Intel Secure Key).
3.PCI Express 3.0 support (not on Core i3 and ULV processors).[11]
4.Max CPU multiplier of 63 (57 for Sandy Bridge).[12]
5.RAM support up to 2800 MT/s in 200 MHz increments.[12]
6.The built-in GPU has 6 or 16 execution units (EUs), compared to Sandy Bridge's 6 or 12.
7.Intel HD Graphics with DirectX 11, OpenGL 3.1, and OpenCL 1.1 support.[14] OpenGL 4.0 is supported with 9.18.10.3071 WHQL drivers[15] and later drivers.
8.DDR3L and Configurable TDP (cTDP) for mobile processors.
9.Multiple 4K video playback.
10.Intel Quick Sync Video version 2.
11.Up to three displays are supported (with some limitations: with chipset of 7-series and using two of them with DisplayPort or eDP).[17]
12.A 14- to 19-stage instruction pipeline, depending on the micro-operation cache hit or miss
Benchmark comparisons
*3% to 5% increase in CPU performance when compared clock for clock.
*25% to 68% increase in integrated GPU performance.
| Models and Steppings |
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| The Ivy Bridge-E family is made in three different versions, by number of cores, and for three market segments: the basic Ivy Bridge-E is a single-socket processor sold as Core i7-49xx and is only available in the six-core S1 stepping, with some versions limited to four active cores. Ivy Bridge-EN (Xeon E5-14xx v2 and Xeon E5-24xx v2) is the model for single- and dual-socket servers using LGA 1356 with up to 10 cores, while Ivy Bridge-EP (nd Xeon E5-16xx v2, Xeon E5-26xx v2 and Xeon E5-46xx v2) scales up to four LGA 2011 sockets and up to 12 cores per chip and Ivybridge-EX will have up to 15 cores and scale to 8 sockets. |
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| Server Processors |
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Additional high-end server processors based on the Ivy Bridge architecture, code named Ivytown, were announced September 10, 2013 at the Intel Developer Forum, after the usual one year interval between consumer and server product releases.[39][40][41] The Ivy Bridge-EP processor line announced in September 2013 has up to 12 cores and 30 MB third level cache, with rumors of Ivy Bridge-EX up to 15 cores and an increased third level cache of up to 37.5 MB,[42][43] although an early leaked lineup of Ivy Bridge-E included processors with a maximum of 6 cores.[44] Both Core-i7 and Xeon versions are produced: the Xeon versions marketed as Xeon E5-2600 V2 act as drop-in replacements for the existing Sandy Bridge-EN and Sandy Bridge-EP based Xeon E5, and Core-i7 versions designated i7-4820K, i7-4930K, i7-4960X were released on September 10, 2013 remained compatible with X79 and LGA2011 hardware.
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