CPUBoss Review Our evaluation of L5408 vs Q6600 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

Intel Xeon L5408

CPUBoss Winner
Front view of Intel Xeon L5408

Differences What are the advantages of each

Front view of Intel Xeon L5408

Reasons to consider the
Intel Xeon L5408

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Much more l2 cache 12 MB vs 8 MB 50% more l2 cache; more data can be stored in the l2 cache for quick access later
Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much lower typical power consumption 32.5W vs 85.31W 2.6x lower typical power consumption
Much more l2 cache per core 3 MB/core vs 2 MB/core 50% more l2 cache per core
Much better geekbench 3 AES single core score 105,400 MB/s vs 102,800 MB/s Around 5% better geekbench 3 AES single core score
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Better geekbench 3 Multi-Core score 6,095 vs 4,490 More than 35% better geekbench 3 Multi-Core score
Better performance per watt 3.41 pt/W vs 1.19 pt/W More than 2.8x better performance per watt
Higher Maximum operating temperature 72 °C vs 62.2 °C More than 15% higher Maximum operating temperature
Much lower annual home energy cost 9.64 $/year vs 25.29 $/year 2.6x lower annual home energy cost
Much lower annual commercial energy cost 35.04 $/year vs 91.98 $/year 2.6x lower annual commercial energy cost
Newer Feb, 2008 vs Jan, 2007 Release date over 1 years later
Better overclocked clock speed (Water) 4.12 GHz vs 3.6 GHz Around 15% better overclocked clock speed (Water)
Front view of Intel Core2 Quad Q6600

Reasons to consider the
Intel Core2 Quad Q6600

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Higher clock speed 2.4 GHz vs 2.13 GHz Around 15% higher clock speed
Slightly better overclocked clock speed (Air) 3.52 GHz vs 3.34 GHz More than 5% better overclocked clock speed (Air)

Benchmarks Real world tests of Xeon L5408 vs Core2 Quad Q6600

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 L5408
105,400 MB/s
Core2 Quad Q6600
102,800 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon L5408  vs
Core2 Quad Q6600 
Clock speed 2.13 GHz 2.4 GHz
Cores Quad core Quad core
Socket type
LGA 771
LGA 775

features

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

power consumption

TDP 40W 105W
Annual home energy cost 9.64 $/year 25.29 $/year
Annual commercial energy cost 35.04 $/year 91.98 $/year
Performance per watt 3.41 pt/W 1.19 pt/W
Typical power consumption 32.5W 85.31W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 1,066 MHz 1,066 MHz

details

Xeon L5408  vs
Core2 Quad Q6600 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 12 MB 8 MB
L2 cache per core 3 MB/core 2 MB/core
Manufacture process 45 nm 65 nm
Transistor count 820,000,000 582,000,000
Max CPUs 2 1
Clock multiplier 8 9
Voltage range 0.85 - 1.35V 0.85 - 1.5V
Operating temperature Unknown - 72°C Unknown - 62.2°C

overclocking

Overclocked clock speed 3.34 GHz 3.52 GHz
Overclocked clock speed (Water) 4.12 GHz 3.6 GHz
Overclocked clock speed (Air) 3.34 GHz 3.52 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
Intel Xeon L5408
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Intel Core2 Quad Q6600
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