CPUBoss Review Our evaluation of L5640 vs 6168 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 L5640 

CPUBoss recommends the Intel Xeon L5640  based on its cost to run.

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VS

Differences What are the advantages of each

Front view of Intel Xeon L5640

Reasons to consider the
Intel Xeon L5640

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Much higher clock speed 2.26 GHz vs 1.9 GHz Around 20% higher clock speed
Much better performance per watt 10.46 pt/W vs 1.23 pt/W More than 8.5x better performance per watt
Much better overclocked clock speed (Air) 3.9 GHz vs 2.52 GHz More than 55% better overclocked clock speed (Air)
Much lower typical power consumption 48.75W vs 93.44W Around 50% lower typical power consumption
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
Much lower annual commercial energy cost 52.56 $/year vs 100.74 $/year Around 50% lower annual commercial energy cost
Much lower annual home energy cost 14.45 $/year vs 27.7 $/year Around 50% lower annual home energy cost
Much better overclocked clock speed (Water) 2.27 GHz vs 1.9 GHz Around 20% better overclocked clock speed (Water)
Front view of AMD Opteron 6168

Reasons to consider the
AMD Opteron 6168

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Much more l2 cache 6 MB vs 2 MB 3x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly more l2 cache per core 0.5 MB/core vs 0.33 MB/core More than 50% more l2 cache per core
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration

Benchmarks Real world tests of Xeon L5640 vs Opteron 6168

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon L5640
16,852
Opteron 6168
7,596

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon L5640
1,250,000 MB/s
Opteron 6168
75,500 MB/s

Specifications Full list of technical specs

summary

Xeon L5640  vs
Opteron 6168 
Clock speed 2.26 GHz 1.9 GHz
Cores Hexa core Duodeca core
Socket type
LGA 1366
G34

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3
AES

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

details

Xeon L5640  vs
Opteron 6168 
Threads 12 12
L2 cache 2 MB 6 MB
L2 cache per core 0.33 MB/core 0.5 MB/core
L3 cache 12 MB 12 MB
L3 cache per core 2 MB/core 1 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 2 4
Clock multiplier 17 9
Voltage range 0.75 - 1.35V 1.19 - UnknownV
Operating temperature Unknown - 69.4°C Unknown - 55°C

overclocking

Overclocked clock speed 3.9 GHz 2.52 GHz
Overclocked clock speed (Water) 2.27 GHz 1.9 GHz
Overclocked clock speed (Air) 3.9 GHz 2.52 GHz

power consumption

TDP 60W 115W
Annual home energy cost 14.45 $/year 27.7 $/year
Annual commercial energy cost 52.56 $/year 100.74 $/year
Performance per watt 10.46 pt/W 1.23 pt/W
Typical power consumption 48.75W 93.44W

bus

Architecture QPI HyperTransport 3.0
Clock speed 2,930 MHz 3,200 MHz
Intel Xeon L5640
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AMD Opteron 6168
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