CPUBoss Review Our evaluation of W3565 vs E5645 among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

No winner declared

Too close to call

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VS

Differences What are the advantages of each

Front view of Intel Xeon W3565

Reasons to consider the
Intel Xeon W3565

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Much higher clock speed 3.2 GHz vs 2.4 GHz Around 35% higher clock speed
Much higher turbo clock speed 3.46 GHz vs 2.67 GHz Around 30% higher turbo clock speed
Much better PassMark (Single core) score 1,419 vs 1,083 More than 30% better PassMark (Single core) score
Much better overclocked clock speed (Air) 4.3 GHz vs 3.39 GHz More than 25% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.2 GHz vs 2.4 GHz Around 35% better overclocked clock speed (Water)
Front view of Intel Xeon E5645

Reasons to consider the
Intel Xeon E5645

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Much more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much better PassMark score 6,545 vs 5,957 Around 10% better PassMark score
Much more l3 cache 12 MB vs 8 MB 50% more l3 cache; more data can be stored in the l3 cache for quick access later
More cores 6 vs 4 2 more cores; run more applications at once
Much better performance per watt 8.49 pt/W vs 1.62 pt/W Around 5.2x better performance per watt
Much better performance per dollar 1.2 pt/$ vs 0.69 pt/$ Around 75% better performance per dollar
Supports more RAM 294,912 MB vs 24,576 MB Supports 12x more RAM
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much lower typical power consumption 65W vs 105.63W Around 40% lower typical power consumption
More threads 12 vs 8 4 more threads
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More l2 cache per core 0.33 MB/core vs 0.25 MB/core Around 35% more l2 cache per core
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Much lower annual commercial energy cost 70.08 $/year vs 113.88 $/year Around 40% lower annual commercial energy cost
Much lower annual home energy cost 19.27 $/year vs 31.32 $/year Around 40% lower annual home energy cost

Benchmarks Real world tests of Xeon W3565 vs E5645

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon W3565
8,544
Xeon E5645
20,172

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon W3565
2,222
Xeon E5645
1,968

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon W3565
139,100 MB/s
Xeon E5645
1,340,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon W3565
8,511
Xeon E5645
11,304

GeekBench (64-bit) Data courtesy Primate Labs

Xeon W3565
9,573
Xeon E5645
11,929

GeekBench

Xeon W3565
10,582
Xeon E5645
11,929

PassMark Data courtesy Passmark

Xeon W3565
5,957
Xeon E5645
6,545

PassMark (Single Core)

Xeon W3565
1,419
Xeon E5645
1,083

Specifications Full list of technical specs

summary

Xeon W3565  vs
E5645 
Clock speed 3.2 GHz 2.4 GHz
Turbo clock speed 3.46 GHz 2.67 GHz
Cores Quad core Hexa core
Socket type
LGA 1366

features

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

power consumption

TDP 130W 80W
Annual home energy cost 31.32 $/year 19.27 $/year
Annual commercial energy cost 113.88 $/year 70.08 $/year
Performance per watt 1.62 pt/W 8.49 pt/W
Typical power consumption 105.63W 65W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Triple Channel
Supports ECC Yes Yes
Maximum bandwidth 25,599.99 MB/s 31,999.98 MB/s
Maximum memory size 24,576 MB 294,912 MB

details

Xeon W3565  vs
E5645 
Architecture x86-64 x86-64
Threads 8 12
L2 cache 1 MB 2 MB
L2 cache per core 0.25 MB/core 0.33 MB/core
L3 cache 8 MB 12 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 1 2
Clock multiplier 24 18
Voltage range 0.8 - 1.23V 0.75 - 1.35V

overclocking

Overclock popularity 0 3
Overclocked clock speed 4.3 GHz 3.39 GHz
Overclocked clock speed (Water) 3.2 GHz 2.4 GHz
Overclocked clock speed (Air) 4.3 GHz 3.39 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 1 2
Data rate 19,200 MB/s 46,928 MB/s
Transfer rate 4,800 MT/s 5,860 MT/s
Clock speed 2,400 MHz 2,930 MHz
Intel Xeon W3565
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Intel Xeon E5645
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