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Differences What are the advantages of each

Front view of Intel Xeon E5 2609 v2

Reasons to consider the
Intel Xeon E5 2609 v2

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Supports more RAM 786,432 MB vs 32,768 MB Supports 24x more RAM
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Slightly more l3 cache 10 MB vs 8 MB 25% more l3 cache; more data can be stored in the l3 cache for quick access later
Better performance per watt 14.11 pt/W vs 11.42 pt/W Around 25% better performance per watt
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Lower typical power consumption 65W vs 71.5W Around 10% lower typical power consumption
Better performance per dollar 3.76 pt/$ vs 3.69 pt/$ Almost the same
Lower annual home energy cost 19.27 $/year vs 21.2 $/year Around 10% lower annual home energy cost
Lower annual commercial energy cost 70.08 $/year vs 77.09 $/year Around 10% lower annual commercial energy cost
Front view of Intel Core i7 4790K

Reasons to consider the
Intel Core i7 4790K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much higher turbo clock speed 4.4 GHz vs 2.5 GHz More than 75% higher turbo clock speed
Much higher clock speed 4 GHz vs 2.5 GHz 60% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much better geekbench 3 Multi-Core score 15,490 vs 7,602 More than 2x better geekbench 3 Multi-Core score
Much better geekbench 3 single core score 4,004 vs 2,141 More than 85% better geekbench 3 single core score
Much better overclocked clock speed (Air) 4.63 GHz vs 2.5 GHz More than 85% better overclocked clock speed (Air)
More threads 8 vs 4 Twice as many threads
Much better overclocked clock speed (Water) 4.8 GHz vs 2.5 GHz More than 90% better overclocked clock speed (Water)
Newer Apr, 2014 vs Jul, 2013 Release date 9 months later

Benchmarks Real world tests of Xeon E5 2609 v2 vs Core i7 4790K

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5 2609 v2
1,780,000 MB/s
Core i7 4790K
5,140,000 MB/s

Specifications Full list of technical specs

summary

Xeon E5 2609 v2  vs
Core i7 4790K 
Clock speed 2.5 GHz 4 GHz
Turbo clock speed 2.5 GHz 4.4 GHz
Cores Quad core Quad core
Is unlocked No Yes

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
F16C
MMX
SSE4
AVX
SSE3
EM64T
SSE
SSE4.1
FMA3
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 80W 88W
Annual home energy cost 19.27 $/year 21.2 $/year
Annual commercial energy cost 70.08 $/year 77.09 $/year
Performance per watt 14.11 pt/W 11.42 pt/W
Typical power consumption 65W 71.5W

bus

Architecture QPI DMI 2.0
Number of links 2 0
Transfer rate 6,400 MT/s 5,000 MT/s

details

Xeon E5 2609 v2  vs
Core i7 4790K 
Architecture x86-64 x86-64
Threads 4 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 10 MB 8 MB
L3 cache per core 2.5 MB/core 2 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 2 1
Operating temperature Unknown - 71°C Unknown - 74.04°C

overclocking

Overclocked clock speed 2.5 GHz 4.63 GHz
Overclocked clock speed (Water) 2.5 GHz 4.8 GHz
Overclocked clock speed (Air) 2.5 GHz 4.63 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics 4600
Number of displays supported N/A 3
GPU clock speed N/A 350 MHz
Turbo clock speed N/A 1,250 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3L-1600
DDR3-1333
DDR3
Channels Quad Channel Dual Channel
Supports ECC Yes No
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 786,432 MB 32,768 MB
Intel Xeon E5 2609 v2
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Intel Core i7 4790K
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