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Differences What are the advantages of each

Front view of Intel Core i7 3770K

Reasons to consider the
Intel Core i7 3770K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher clock speed 3.5 GHz vs 3.2 GHz Around 10% higher clock speed
Significantly better PassMark (Single core) score 2,084 vs 1,311 Around 60% better PassMark (Single core) score
Significantly better overclocked clock speed (Air) 4.69 GHz vs 3.8 GHz Around 25% better overclocked clock speed (Air)
Better performance per watt 4.55 pt/W vs 2.08 pt/W Around 2.2x better performance per watt
Better PassMark score 9,544 vs 7,813 More than 20% better PassMark score
Significantly better overclocked clock speed (Water) 4.8 GHz vs 3.8 GHz More than 25% better overclocked clock speed (Water)
Front view of AMD Opteron 6328

Reasons to consider the
AMD Opteron 6328

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Much more l2 cache 8 MB vs 1 MB 8x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports more CPUs in SMP configuration 4 vs 1 3 supports more CPUs in SMP configuration
More l3 cache 16 MB vs 8 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Significantly lower typical power consumption 93.44W vs 114.97W Around 20% lower typical power consumption
More cores 8 vs 4 Twice as many cores; run more applications at once
Much lower annual home energy cost 27.7 $/year vs 42.19 $/year Around 35% lower annual home energy cost
Higher Maximum operating temperature 71.7 °C vs 67.4 °C More than 5% higher Maximum operating temperature
Newer Nov, 2012 vs Apr, 2012 Release date 6 months later
Lower annual commercial energy cost 100.74 $/year vs 112.39 $/year More than 10% lower annual commercial energy cost

Benchmarks Real world tests of Core i7 3770K vs Opteron 6328

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i7 3770K
13,098
Opteron 6328
19,224

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 3770K
2,620,000 MB/s
Opteron 6328
2,280 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 3770K  vs
Opteron 6328 
Clock speed 3.5 GHz 3.2 GHz
Turbo clock speed 3.9 GHz 3.8 GHz
Cores Quad core Octa core
Socket type
LGA 1155
G34
Is unlocked Yes No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
SSE4
XOP
AVX
SSE3
SSE
ABM
BMI1
CLMUL
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
TBM
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 77W 115W
Annual home energy cost 42.19 $/year 27.7 $/year
Annual commercial energy cost 112.39 $/year 100.74 $/year
Performance per watt 4.55 pt/W 2.08 pt/W
Typical power consumption 114.97W 93.44W

bus

Architecture DMI HyperTransport 3.0
Transfer rate 5,000 MT/s 6,400 MT/s

details

Core i7 3770K  vs
Opteron 6328 
Threads 8 8
L2 cache 1 MB 8 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 8 MB 16 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 1 4
Clock multiplier 35 19
Operating temperature Unknown - 67.4°C Unknown - 71.7°C

overclocking

Overclocked clock speed 4.69 GHz 3.8 GHz
Overclocked clock speed (Water) 4.8 GHz 3.8 GHz
Overclocked clock speed (Air) 4.69 GHz 3.8 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics 4000 N/A
Latest DirectX 11.x N/A
Number of displays supported 3 N/A
GPU clock speed 650 MHz N/A
Turbo clock speed 1,150 MHz N/A
3DMark06 5,339.9 N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3
Channels Dual Channel Quad Channel
Supports ECC No Yes
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Intel Core i7 3770K
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AMD Opteron 6328
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