Intel Xeon L5609 

Released March, 2010
  • 1.86 GHz
  • Quad core

Features Key features of the Intel Xeon L5609

clock speed

Xeon L5609
1.86 GHz
Xeon E5645
2.4 GHz

turbo clock speed

Xeon L5609
1.86 GHz
Xeon E5645
2.67 GHz

L2 cache

Xeon L5609
1 MB
Xeon E5645
2 MB

L3 cache

Xeon L5609
12 MB
Xeon E5645
12 MB

overclocked clock speed (air)

Xeon L5609
2.83 GHz
Xeon E5645
3.57 GHz
Core2 Quad Q6600
3.52 GHz

overclocked clock speed (water)

Xeon L5609
1.87 GHz
Core2 Quad Q6600
3.75 GHz
Xeon E5645
2.4 GHz

Specifications Full list of technical specs


Clock speed 1.86 GHz
Turbo clock speed 1.86 GHz
Cores Quad core
Socket type LGA 1366


Has a NX bit Yes
Supports trusted computing Yes
Has virtualization support Yes
Instruction set extensions
  1. MMX
  2. AES
  3. SSE
  4. SSE2
  5. SSE4.1
  6. SSE3
  7. Supplemental SSE3
  8. SSE4.2
  9. SSE4
Supports dynamic frequency scaling Yes

power consumption

Annual home energy cost 9.64 $/year
Annual commercial energy cost 35.04 $/year
Typical power consumption 32.5W

memory controller

Memory controller Built-in
Memory type
  1. DDR3-1066
  2. DDR3-800
  3. DDR3
Channels Triple Channel
Supports ECC Yes
Maximum bandwidth 25,599.99 MB/s
Maximum memory size 294,912 MB


Architecture x86-64
Threads 4 threads
L2 cache 1 MB
L2 cache per core 0.25 MB/core
L3 cache 12 MB
L3 cache per core 3 MB/core
Manufacture process 32 nm
Max CPUs 2
Clock multiplier 14
Voltage range 0.75 - 1.35V
Operating temperature Unknown - 63.1°C


Overclocked clock speed 2.83 GHz
Overclocked clock speed (Water) 1.87 GHz
Overclocked clock speed (Air) 2.83 GHz

integrated graphics

GPU None


Architecture QPI
Data rate 38,400 MB/s
Transfer rate 4,800 MT/s
Clock speed 2,400 MHz
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