CPUBoss Review Our evaluation of L5638 vs 930 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 L5638

Reasons to consider the
Intel Xeon L5638

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Significantly 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 newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much lower typical power consumption 48.75W vs 105.63W 2.2x lower typical power consumption
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
Much better performance per watt 8.43 pt/W vs 1.45 pt/W More than 5.8x better performance per watt
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
Significantly higher Maximum operating temperature 85 °C vs 67.9 °C More than 25% higher Maximum operating temperature
More cores 6 vs 4 2 more cores; run more applications at once
Significantly better performance per dollar 0.88 pt/$ vs 0.62 pt/$ Around 45% better performance per dollar
More threads 12 vs 8 4 more threads
Much lower annual home energy cost 14.45 $/year vs 31.32 $/year 2.2x lower annual home energy cost
Much lower annual commercial energy cost 52.56 $/year vs 113.88 $/year 2.2x lower annual commercial energy cost
More l2 cache per core 0.33 MB/core vs 0.25 MB/core Around 35% more l2 cache per core
Front view of Intel Core i7 930

Reasons to consider the
Intel Core i7 930

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Significantly higher clock speed 2.8 GHz vs 2 GHz Around 40% higher clock speed
Higher turbo clock speed 3.06 GHz vs 2.4 GHz Around 30% higher turbo clock speed
Much better overclocked clock speed (Air) 4.21 GHz vs 2 GHz More than 2x better overclocked clock speed (Air)
Better geekbench 3 single core score 2,016 vs 1,355 Around 50% better geekbench 3 single core score
Much better overclocked clock speed (Water) 4.62 GHz vs 3.03 GHz Around 55% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon L5638 vs Core i7 930

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon L5638
15,681
Core i7 930
7,828

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon L5638
1,355
Core i7 930
2,016

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon L5638
965,300 MB/s
Core i7 930
126,500 MB/s

PassMark Data courtesy Passmark

Xeon L5638
5,556
Core i7 930
5,176

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon L5638  vs
Core i7 930 
Clock speed 2 GHz 2.8 GHz
Turbo clock speed 2.4 GHz 3.06 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 60W 130W
Annual home energy cost 14.45 $/year 31.32 $/year
Annual commercial energy cost 52.56 $/year 113.88 $/year
Performance per watt 8.43 pt/W 1.45 pt/W
Typical power consumption 48.75W 105.63W

details

Xeon L5638  vs
Core i7 930 
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 1
Voltage range 1 - 1.5V 0.8 - 1.38V
Operating temperature Unknown - 85°C Unknown - 67.9°C

overclocking

Overclocked clock speed 2 GHz 4.21 GHz
Overclocked clock speed (Water) 3.03 GHz 4.62 GHz
Overclocked clock speed (Air) 2 GHz 4.21 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 1
Data rate 46,928 MB/s 19,200 MB/s
Transfer rate 5,860 MT/s 4,800 MT/s
Clock speed 2,930 MHz 2,400 MHz
Intel Xeon L5638
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Intel Core i7 930
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