Nehalem-based Xeon

3400-series "Lynnfield" Main article: Lynnfield (microprocessor)

Xeon 3400-series processors based on Lynnfield fill the gap between the previous 3300-series "Yorkfield" processors and the newer 3500-series "Bloomfield". Like Bloomfield, they are quad-core single-package processors based on the Nehalem microarchitecture, but were introduced almost a year later, in September 2009. The same processors are marketed for mid-range to high-end desktops systems as Core i5 and Core i7. They have two integrated memory channels as well as PCI Express and Direct Media Interface (DMI) links, but no QuickPath Interconnect (QPI) interface.

3400-series "Clarkdale" Main article: Clarkdale (microprocessor)

At low end of the 3400-series is not a Lynnfield but a Clarkdale processor, which is also used in the Core i3-500 and Core i5-600 processors as well as the Celeron G1000 and G6000 Pentium series. A single model was released in March 2010, the Xeon L3406. Compared to all other Clarkdale-based products, this one does not support integrated graphics, but has a much lower thermal design power of just 30 W. Compared to the Lynnfield-based Xeon 3400 models, it only offers two cores.

3500-series "Bloomfield" Main article: Bloomfield (microprocessor)

Bloomfield is the codename for the successor to the Xeon Core microarchitecture, is based on the Nehalem microarchitecture and uses the same 45 nm manufacturing methods as Intel's Penryn. The first processor released with the Nehalem architecture is the desktop Intel Core i7, which was released in November 2008. This is the server version for single CPU systems. This is a single-socket Intel Xeon processor. The performance improvements over previous Xeon processors are based mainly on:

Integrated memory controller supporting three memory channels of DDR3 UDIMM (Unbuffered) or RDIMM (Registered) A new point-to-point processor interconnect QuickPath, replacing the legacy front side bus Simultaneous multithreading by multiple cores and hyper-threading (2× per core). model Speed (GHz) L3 Cache (MB) QPI speed (GT/s) DDR3 Clock (MHz) TDP (W) Cores Threads Turbo-Boost W3503 2.40 4 4.8 1066 130 2 2 No W3505 2.53 4 4.8 1066 130 2 2 No W3520 2.66 8 4.8 1066 130 4 8 Yes W3530 2.80 8 4.8 1066 130 4 8 Yes W3540 2.93 8 4.8 1066 130 4 8 Yes W3550 3.06 8 4.8 1066 130 4 8 Yes W3565 3.20 8 4.8 1066 130 4 8 Yes W3570 3.2 8 6.4 1333 130 4 8 Yes W3580 3.33 8 6.4 1333 130 4 8 Yes 5500-series "Gainestown" Gainestown Produced From 2008 to present Max. CPU clock rate 1866 MHz to 3333 MHz Min. feature size 45 nm Instruction set x86 Microarchitecture Nehalem CPUID code 106Ax Product code 80602 Cores 4 L2 cache 4×256 kB L3 cache 8 MB Application DP Server Package(s) LGA 1366 Brand name(s) Xeon 55xx

Gainestown or Nehalem-EP, the successor to the Xeon Core microarchitecture, is based on the Nehalem microarchitecture and uses the same 45 nm manufacturing methods as Intel's Penryn. The first processor released with the Nehalem microarchitecture is the desktop Intel Core i7, which was released in November 2008. Server processors of the Xeon 55xx range were first supplied to testers in December 2008.

The performance improvements over previous Xeon processors are based mainly on:

Integrated memory controller supporting three memory channels of DDR3 SDRAM. A new point-to-point processor interconnect QuickPath, replacing the legacy front side bus. Gainestown has two QuickPath interfaces. Hyper-threading (2× per core, starting from 5518), that was already present in pre-Core Duo processors. Model Speed (GHz) L3 Cache (MB) QPI speed (GT/s) DDR3 Clock (MHz) TDP (W) Cores Threads Turbo-Boost E5502 1.87 4 4.8 800 80 2 2 No E5503 2.00 4 4.8 800 80 2 2 No E5504 2.00 4 4.8 800 80 4 4 No E5506 2.13 4 4.8 800 80 4 4 No L5506 2.13 4 4.8 800 60 4 4 No E5507 2.26 4 4.8 800 80 4 4 No L5518 2.13 8 5.86 1066 60 4 8 Yes E5520 2.26 8 5.86 1066 80 4 8 Yes L5520 2.26 8 5.86 1066 60 4 8 Yes E5530 2.40 8 5.86 1066 80 4 8 Yes L5530 2.40 8 5.86 1066 60 4 8 Yes E5540 2.53 8 5.86 1066 80 4 8 Yes X5550 2.66 8 6.4 1333 95 4 8 Yes X5560 2.80 8 6.4 1333 95 4 8 Yes X5570 2.93 8 6.4 1333 95 4 8 Yes W5580 3.20 8 6.4 1333 130 4 8 Yes W5590 3.33 8 6.4 1333 130 4 8 Yes C3500/C5500-series "Jasper Forest" Jasper Forest Produced From 2010 to present Max. CPU clock rate 1733 MHz to 2400 MHz Min. feature size 45 nm Instruction set x86 Microarchitecture Nehalem CPUID code 106Ex Product code 80612 Cores 4 L2 cache 4×256 kB L3 cache 8 MB Application UP/DP Server Package(s) LGA 1366 Brand name(s) Xeon C35xx (UP) Xeon C55xx (DP) Celeron P1xxx (UP)

Jasper Forest is a Nehalem-based embedded processor with PCI Express connections on-die, core counts from 1 to 4 cores and power envelopes from 23 to 85 watts.

The uni-processor version without QPI comes as LC35xx and EC35xx, while the dual-processor version is sold as LC55xx and EC55xx and uses QPI for communication between the processors. Both versions use a DMI link to communicate with the 3420 that is also used in the 3400-series Lynfield Xeon processors, but use an LGA 1366 package that is otherwise used for processors with QPI but no DMI or PCI Express links. The CPUID code of both Lynnfield and Jasper forest is 106Ex, i.e. family 6, model 30.

The Celeron P1053 belongs into the same family as the LC35xx series, but lacks some RAS features that are present in the Xeon version.

3600/5600-series "Gulftown" & "Westmere-EP" Main article: Gulftown (microprocessor)

Gulftown or Westmere-EP, a six-core 32 nm Westmere-based processor, is the basis for the Xeon 36xx and 56xx series and the Core i7-980X. It launched in the first quarter of 2010. The 36xx-series follows the 35xx-series Bloomfield uni-processor model while the 56xx-series follows the 55xx-series Gainestown dual-processor model and both are socket compatible to their predecessors.

Model Speed (GHz) L3 Cache (MB) QPI speed (GT/s) DDR3 Clock (MHz) TDP (W) Cores Threads Turbo-Boost W3670 3.20 12 4.8 1066 130 6 12 Y W3680 3.33 12 6.4 1333 130 6 12 Y W3690 3.46 12 6.4 1333 130 6 12 Y E5603 1.60 4 4.8 800 80 4 4 N E5606 2.13 8 4.8 800 80 4 4 N E5607 2.26 8 4.8 1066 80 4 4 N L5609 1.86 12 4.8 1066 40 4 4 N L5618 1.86 12 5.86 1066 40 4 8 Y E5620 2.40 12 5.86 1066 80 4 8 Y L5630 2.13 12 5.86 1066 40 4 8 Y E5630 2.53 12 5.86 1066 80 4 8 Y L5638 2.00 12 5.86 1333 60 6 12 Y L5639 2.13 12 5.86 1333 60 6 12 Y L5640 2.26 12 5.86 1333 60 6 12 Y E5640 2.66 12 5.86 1066 80 4 8 Y L5645 2.40 12 5.86 1333 60 6 12 Y E5645 2.40 12 5.86 1333 80 6 12 Y E5649 2.53 12 5.86 1333 80 6 12 Y X5650 2.66 12 6.4 1333 95 6 12 Y X5660 2.80 12 6.4 1333 95 6 12 Y X5667 3.06 12 6.4 1333 95 4 8 Y X5670 2.93 12 6.4 1333 95 6 12 Y X5672 3.20 12 6.4 1333 95 4 8 Y X5675 3.06 12 6.4 1333 95 6 12 Y X5677 3.46 12 6.4 1333 130 4 8 Y X5679 3.20 12 6.4 1066 115 6 12 Y X5680 3.33 12 6.4 1333 130 6 12 Y X5687 3.60 12 6.4 1333 130 4 8 Y X5690 3.46 12 6.4 1333 130 6 12 Y X5698 4.40 12 6.4 1066 130 2 4 Y 6500/7500-series "Beckton" Beckton Produced From 2010 to present Max. CPU clock rate 1733 MHz to 2667 MHz Min. feature size 45 nm Instruction set x86 Microarchitecture Nehalem CPUID code 206Ex Product code 80604 Cores 8 L2 cache 8 × 256 kB L3 cache 24 MB Application DP/MP Server Package(s) LGA 1567 Brand name(s) Xeon 65xx (DP) Xeon 75xx (MP)

Beckton or Nehalem-EX (EXpandable server market) is a Nehalem-based processor with up to eight cores and uses buffering inside the chipset to support up to 16 standard DDR3 DIMMS per CPU socket without requiring the use of FB-DIMMS. Unlike all previous Xeon MP processors, Nehalem-EX uses the new LGA 1567 package, replacing the Socket 604 used in the previous models, up to Xeon 7400 "Dunnington". The 75xx models have four QuickPath interfaces, so it can be used in up-to eight-socket configurations, while the 65xx models are only for up to two sockets. Designed by the Digital Enterprise Group (DEG) Santa Clara and Hudson Design Teams, Beckton is manufactured on the P1266 (45 nm) technology. Its launch in March 2010 coincided with that of its direct competitor, AMD's Opteron 6xxx "Magny-Cours".

Most models limit the number of cores and QPI links as well as the L3 Cache size in order to get a broader range of products out of the single chip design.

Model Speed (GHz) L3 Cache (MB) QPI speed (GT/s) DDR3 Clock (MHz) TDP (W) Cores Threads Turbo-Boost E6510 1.73 12 2×4.8 800 105 4 8 E6540 2.00 18 2×6.4 1066 105 6 12 X6550 2.00 18 2×6.4 1066 130 8 16 E7520 1.86 18 3×4.8 800 95 4 8 E7530 1.86 12 3×5.8 1066 105 6 12 E7540 2.00 18 4×6.4 1066 105 6 12 X7542 2.66 18 4×5.8 1066 130 6 6 0/1/1/1 L7545 1.86 18 4×5.8 1066 95 6 12 0/1/3/5 X7550 2.00 18 4×6.4 1066 130 8 16 L7555 1.86 24 4×5.8 1066 95 8 16 1/2/4/5 X7560 2.26 24 4×6.4 1066 130 8 16 E7-x8xx-series "Westmere-EX"

Westmere-EX is the follow-on to Beckton/Nehalem-EX and the first Intel Chip to have ten CPU cores. The microarchitecture is the same as in the six-core Gulftown/Westmere-EP processor, but it uses the LGA 1567 package like Beckton to support up to eight sockets.

Starting with Westmere-EX, the naming scheme has changed once again, with "E7-xxxx" now signifying the high-end line of Xeon processors using a package that supports larger than two-CPU configurations, formerly the 7xxx series. Similarly, the 3xxx uniprocessor and 5xxx dual-processor series turned into E3-xxxx and E5-xxxx, respectively, for later processors.