Sandy Bridge-E
Produced Q4 2011
Designed by Intel Corporation
Max. CPU clock rate 3.2 GHz to 3.6 GHz
Min. feature size 32 nanometer
Instruction set x86, x86-64, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AES-NI, AVX
Microarchitecture Sandy Bridge
CPUID code 0206Dxh
Product code 80619, 80620, 80621, 80622
Cores 8 (physical), 16 (logical)
L2 cache 8 × 256 kB
L3 cache 20 MB
Application UP/DP Server, Workstation
Brand name(s)
  • Core i7-38xx/39xx
  • Xeon E5-16xx/24xx/26xx/46xx

Sandy Bridge-E[1] is the codename of an eight-core Intel processor based on the Sandy Bridge microarchitecture. It follows the six-core Gulftown/Westmere-EP processor that used the older LGA 1366 package, which is replaced with LGA 2011 starting with Sandy Bridge-EP. The CPUID extended model number is 45 (2Dh) and four product codes are used, 80619 for the UP Core i7 models and the higher numbers for the various Xeon E5 DP server models. Two versions of the die exist, with four or eight cores, respectively. Out of those, some cores may be disabled, which is used for products that are sold with two or six cores visible to the user.

There are three packages: The original Sandy Bridge-E that allows only a single CPU in the system using an LGA 2011 package for the Core i7-38xx and Xeon E5-16xx models, the Sandy Bridge-EP in the Xeon E5-26xx allowing dual CPUs with the same socket and the Sandy Bridge-EN Xeon E5-24xx that also allows dual CPUs but uses the LGA 1356 package. Later Sandy Bridge-EP will allow up to four CPUs per system.


Code Name Brand Name (list) Cores L3 Cache Socket TDP I/O Bus
Sandy Bridge-E Core i7-38xx 4 10 MB 1×LGA 2011 130 W DMI
Core i7-39xx 6 12–15 MB 1×LGA 2011 130–150 W DMI
Xeon E5-16xx 4–6 10–15 MB 1×LGA 2011 130 W DMI
Sandy Bridge-EN Xeon E5-14xx 4–6 10–15 MB 1×LGA 1356 60–80 W DMI+QPI
Xeon E5-24xx[2] 4–8 10–20 MB 2×LGA 1356 80–95 W DMI+QPI
Pentium 14xx 2 5 MB 1×LGA 1356 40–80 W DMI+QPI
Sandy Bridge-EP Xeon E5-26xx 2–8 5–20 MB 2×LGA 2011 80–150 W DMI+2×QPI
Xeon E5-26xxL 6–8 15–20 MB 2×LGA 2011 60–70 W DMI+2×QPI
Xeon E5-46xx[3] 4–8 10–20 MB 4×LGA 2011 60–130 W DMI+2×QPI


  1. ^ "Products Formerly Sandy Bridge-E". 
  2. ^ "Specifications of Xeon E5-2400 series CPUs". 
  3. ^ "Intel Xeon E5 CPUs_ surfaced on Intel website". 

Further reading

  • Sandy Bridge for Servers