CPUBoss Review Our evaluation of E5645 vs E5530 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

5.3

CPUBoss Score

Combination of all six facets

Winner
Intel Xeon E5645 

CPUBoss recommends the Intel Xeon E5645  based on its performance and value.

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VS

Differences What are the advantages of each

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 4,605 More than 40% 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 1.97 pt/W More than 4.2x better performance per watt
Much better performance per dollar 1.2 pt/$ vs 0.28 pt/$ Around 4.2x better performance per dollar
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
More threads 12 vs 8 4 more threads
Supports more RAM 294,912 MB vs 147,456 MB Supports 2x more RAM
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
Newer Mar, 2010 vs Mar, 2009 Release date 11 months later
Front view of Intel Xeon E5530

Reasons to consider the
Intel Xeon E5530

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Much better overclocked clock speed (Water) 4.38 GHz vs 2.4 GHz More than 80% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon E5645 vs E5530

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5645
20,172
Xeon E5530
5,726

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E5645
1,968
Xeon E5530
1,700

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5645
1,340,000 MB/s
Xeon E5530
110,200 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E5645
11,304
Xeon E5530
7,118

GeekBench

Xeon E5645
11,929
Xeon E5530
7,118

PassMark Data courtesy Passmark

Xeon E5645
6,545
Xeon E5530
4,605

PassMark (Single Core)

Xeon E5645
1,083
Xeon E5530
1,086

Specifications Full list of technical specs

summary

Xeon E5645  vs
E5530 
Clock speed 2.4 GHz 2.4 GHz
Turbo clock speed 2.67 GHz 2.66 GHz
Cores Hexa core Quad core
Socket type
LGA 1366

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
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 80W 80W
Annual home energy cost 19.27 $/year 19.27 $/year
Annual commercial energy cost 70.08 $/year 70.08 $/year
Performance per watt 8.49 pt/W 1.97 pt/W
Typical power consumption 65W 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 31,999.98 MB/s 25,599.99 MB/s
Maximum memory size 294,912 MB 147,456 MB

details

Xeon E5645  vs
E5530 
Architecture x86-64 x86-64
Threads 12 8
L2 cache 2 MB 1 MB
L2 cache per core 0.33 MB/core 0.25 MB/core
L3 cache 12 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 2 2
Clock multiplier 18 18
Voltage range 0.75 - 1.35V 0.75 - 1.35V
Operating temperature Unknown - 76.2°C Unknown - 76°C

overclocking

Overclocked clock speed 3.39 GHz 3.39 GHz
Overclocked clock speed (Water) 2.4 GHz 4.38 GHz
Overclocked clock speed (Air) 3.39 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 2 2
Data rate 46,928 MB/s 46,928 MB/s
Transfer rate 5,860 MT/s 5,860 MT/s
Clock speed 2,930 MHz 2,930 MHz
Intel Xeon E5645
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Intel Xeon E5530
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