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Title: Gulftown  
Author: World Heritage Encyclopedia
Language: English
Subject: Intel Tick-Tock, Bloomfield (microprocessor), List of Intel microprocessors, Intel 80376, Intel 80387SX
Publisher: World Heritage Encyclopedia


Produced 1H 2010
Designed by Intel Corporation
Max. CPU clock rate 3.2 GHz to 3.46 GHz
Min. feature size 32 nanometer
Instruction set x86, x86-64, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AES-NI
Microarchitecture Westmere
CPUID code 0206Cx
Product code 80613, 80614
Cores 6 (physical), 12 (logical)
L2 cache 6 × 256 KB
L3 cache 12 MB
Application UP/DP Server, Workstation
  • LGA-1366
Brand name(s)
  • Core i7-970, 980, 980X, 990X
  • Xeon 3600s, 5600s

Gulftown[1] or Westmere-EP[2] is the codename of a six-core hyperthreaded Intel processor able to run up to 12 threads in parallel. It is based on Westmere microarchitecture, the 32 nm shrink of Nehalem.[3] Originally rumored to be called the Intel Core i9, it is sold as an Intel Core i7.[4] The first release was the Core i7 980X in the first quarter of 2010,[5][6][7] along with its server counterpart, the Xeon 3600 and the dual-socket Xeon 5600 (Westmere-EP) series using identical chips.

First figures indicate that at equivalent clock rates, depending on the software, it has up to 50% higher performance than the identically clocked quad-core Bloomfield Core i7-975. However, consumer software that utilizes six real cores is still quite rare as of 2011, and not every multithreaded program is able to take advantage of this many cores. Despite having 50% more transistors, the CPU strongly benefits from the 32-nm process, drawing the same or even less power (depending on the operating system) than its Bloomfield predecessors with merely four cores. The thermal design power (TDP) of all planned models is stated to be 130 watts.

Westmere-EP is the first six-core dual-socket processor from Intel, following the quad-core Bloomfield and Gainestown (a.k.a. Nehalem-EP) processors using the same LGA 1366 package, while the earlier Dunnington six-core processor is a Socket 604 based multi-socket processor. The CPUID extended model number is 44 (2Ch) and two product codes are used, 80613 for the UP desktop/server models and 80614 for the Xeon 5600-series DP server models. In some models, only four of the six cores are enabled.


Brand Name (list) Cores L3 Cache Socket TDP I/O Bus
Core i7-9xx 6 12 MB LGA 1366 130 W QuickPath
Core i7-9xxX[8][9]
Xeon 36xx
Xeon 56xx 4-6 40-130 W


  1. ^ "Products Formerly Gulftown". Intel. 
  2. ^ "Products Formerly Westemere-EP". Intel. 
  3. ^ Jon Worrel (2009-07-23). "Core i9 is the new 32nm Gulftown moniker". Fudzilla. Retrieved 2010-09-24. 
  4. ^ Samendk (2009-12-03). "Новости о процессорах Intel Core 2 Duo E8700 и Core i7 980X" [News about Intel Core 2 Duo E8700 and Core i7 980X] (in Russian). OCClub. Retrieved 2010-03-26. 
  5. ^ "Gulftown i7 980X specs". Retrieved 2010-03-26. 
  6. ^ "Intel roadmap for desktop CPU in 2010". Retrieved 2010-03-26. 
  7. ^ Florian Vieru (2009-12-14). "Gulftown sera le Core i7-980X, Core i7-930 pour bientôt!" [Gulftown will be the Core i7-980X, Core i7-930 coming soon!] (in French). Retrieved 2010-03-26. Our Chinese colleagues at PConline have put their hands on slides showing the Core i7-980X, better known by its codename Gulftown 
  8. ^ Hilbert Hagedoorn (2009-12-15). "Intel Core i7 980X hexacore pricing revealed". The Guru of 3D. Retrieved 2010-03-26. 
  9. ^ Anton Shilov (2010-02-09). "Intel to Launch Three Six-Core "Gulftown" Processors for Desktops". X-bit labs. Retrieved 2010-03-26. 
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