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!
VS
Front view of Intel Xeon E5-2620

Intel Xeon E5-2620

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 overclocked clock speed (Air) 3.39 GHz vs 2.28 GHz Around 50% better overclocked clock speed (Air)
Higher turbo clock speed 2.67 GHz vs 2.5 GHz More than 5% higher turbo clock speed
Lower typical power consumption 65W vs 77.19W More than 15% lower typical power consumption
Much better overclocked clock speed (Water) 2.4 GHz vs 2 GHz Around 20% better overclocked clock speed (Water)
Lower annual commercial energy cost 70.08 $/year vs 83.22 $/year More than 15% lower annual commercial energy cost
Lower annual home energy cost 19.27 $/year vs 22.89 $/year More than 15% lower annual home energy cost
Front view of Intel Xeon E5-2620

Reasons to consider the
Intel Xeon E5-2620

Report a correction
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
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

Benchmarks Real world tests of Xeon E5645 vs E5-2620

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5645
20,172
Xeon E5-2620
10,510

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E5645
1,968
Xeon E5-2620
1,736

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5645
1,340,000 MB/s
Xeon E5-2620
1,315,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E5645
11,304
Xeon E5-2620
12,059

GeekBench (64-bit) Data courtesy Primate Labs

Xeon E5645
11,929
Xeon E5-2620
13,391

GeekBench

Xeon E5645
11,929
Xeon E5-2620
13,391

PassMark Data courtesy Passmark

Xeon E5645
6,545
Xeon E5-2620
7,957

PassMark (Single Core)

Xeon E5645
1,083
Xeon E5-2620
1,231

Specifications Full list of technical specs

summary

Xeon E5645  vs
E5-2620 
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

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 80W 95W
Annual home energy cost 19.27 $/year 22.89 $/year
Annual commercial energy cost 70.08 $/year 83.22 $/year
Performance per watt 8.49 pt/W 6.57 pt/W
Typical power consumption 65W 77.19W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3
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

details

Xeon E5645  vs
E5-2620 
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 - 77.4°C

overclocking

Overclock popularity 3 4
Overclocked clock speed 3.39 GHz 2.28 GHz
Overclocked clock speed (Water) 2.4 GHz 2 GHz
Overclocked clock speed (Air) 3.39 GHz 2.28 GHz

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

bus

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
Intel Xeon E5645
Report a correction
Intel Xeon E5-2620
Report a correction

Comments

comments powered by Disqus