Cast your vote Do you agree or disagree with CPUBoss?

Thanks for adding your opinion. Follow us on Facebook to stay up to date with the latest news!
Front view of Intel Xeon E5-2630L

Intel Xeon E5-2630L

CPUBoss Winner

Differences What are the advantages of each

Front view of Intel Xeon E5645

Reasons to consider the
Intel Xeon E5645

Report a correction
Much higher clock speed 2.4 GHz vs 2 GHz Around 20% higher clock speed
Much better performance per dollar 1.2 pt/$ vs 0.97 pt/$ Around 25% better performance per dollar
Higher turbo clock speed 2.67 GHz vs 2.5 GHz More than 5% higher turbo clock speed
Front view of Intel Xeon E5-2630L

Reasons to consider the
Intel Xeon E5-2630L

Report a correction
Much better PassMark (Single core) score 1,596 vs 1,083 More than 45% better PassMark (Single core) score
Significantly more l3 cache 15 MB vs 12 MB 25% more l3 cache; more data can be stored in the l3 cache for quick access later
Supports more RAM 393,216 MB vs 294,912 MB Supports around 35% more RAM
Lower typical power consumption 48.75W vs 65W 25% lower typical power consumption
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Newer Mar, 2012 vs Mar, 2010 Release date over 2 years later
Lower annual commercial energy cost 52.56 $/year vs 70.08 $/year Around 25% lower annual commercial energy cost
Lower annual home energy cost 14.45 $/year vs 19.27 $/year Around 25% lower annual home energy cost

Benchmarks Real world tests of Xeon E5645 vs E5-2630L

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5645

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5645
1,340,000 MB/s
Xeon E5-2630L
1,400,000 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs


Xeon E5645  vs
Clock speed 2.4 GHz 2 GHz
Turbo clock speed 2.67 GHz 2.5 GHz
Cores Hexa core Hexa core
Socket type
LGA 1366
LGA 2011


Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 80W 60W
Annual home energy cost 19.27 $/year 14.45 $/year
Annual commercial energy cost 70.08 $/year 52.56 $/year
Performance per watt 8.49 pt/W 10.72 pt/W
Typical power consumption 65W 48.75W


Architecture QPI QPI
Number of links 2 2
Data rate 46,928 MB/s 57,600 MB/s
Transfer rate 5,860 MT/s 7,200 MT/s
Clock speed 2,930 MHz 3,600 MHz


Xeon E5645  vs
Architecture x86-64 x86-64
Threads 12 12
L2 cache 2 MB 2 MB
L2 cache per core 0.33 MB/core 0.33 MB/core
L3 cache 12 MB 15 MB
L3 cache per core 2 MB/core 2.5 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 2
Clock multiplier 18 25
Voltage range 0.75 - 1.35V 0.6 - 1.35V
Operating temperature Unknown - 76.2°C Unknown - 69.8°C

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A

memory controller

Memory controller Built-in Built-in
Memory type
Channels Triple Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 31,999.98 MB/s 42,666.64 MB/s
Maximum memory size 294,912 MB 393,216 MB
Intel Xeon E5645
Report a correction
Intel Xeon E5-2630L
Report a correction


comments powered by Disqus