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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
Much better turbo clock speed 1,150 MHz vs 1,050 MHz Around 10% better turbo clock speed
More cores 4 vs 2 Twice as many cores; run more applications at once
Much better overclocked clock speed (Air) 4.69 GHz vs 3.57 GHz More than 30% better overclocked clock speed (Air)
Higher clock speed 3.5 GHz vs 3.4 GHz Around 5% higher clock speed
Much better overclocked clock speed (Water) 4.8 GHz vs 3.56 GHz Around 35% better overclocked clock speed (Water)
Higher Maximum operating temperature 67.4 °C vs 65.3 °C Around 5% higher Maximum operating temperature
Front view of Intel Core i3 3245

Reasons to consider the
Intel Core i3 3245

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Much lower typical power consumption 44.69W vs 114.97W 2.6x lower typical power consumption
Much more l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Much lower annual home energy cost 13.25 $/year vs 42.19 $/year 3.2x lower annual home energy cost
Much lower annual commercial energy cost 48.18 $/year vs 112.39 $/year 2.3x lower annual commercial energy cost
Newer Apr, 2013 vs Apr, 2012 Release date 11 months later

Benchmarks Real world tests of Core i7 3770K vs i3 3245

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i7 3770K
10.47 mHash/s
Core i3 3245
6.64 mHash/s

CompuBench 1.5 (Face detection)

Core i7 3770K
8.61 mPixels/s
Core i3 3245
2.94 mPixels/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i7 3770K
1.67 fps
Core i3 3245
-1 fps

PCMark 8 Home 3.0 Accelerated Data courtesy FutureMark

Cloud Gate Data courtesy FutureMark

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

Core i7 3770K
2,620,000 MB/s
Core i3 3245
175,050 MB/s

Specifications Full list of technical specs

summary

Core i7 3770K  vs
i3 3245 
Clock speed 3.5 GHz 3.4 GHz
Cores Quad core Dual core
Is unlocked Yes No

features

Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 77W 55W
Annual home energy cost 42.19 $/year 13.25 $/year
Annual commercial energy cost 112.39 $/year 48.18 $/year
Performance per watt 4.55 pt/W 2.74 pt/W
Typical power consumption 114.97W 44.69W

bus

Architecture DMI DMI
Number of links 1 1
Transfer rate 5,000 MT/s 5,000 MT/s

details

Core i7 3770K  vs
i3 3245 
Architecture x86-64 x86-64
Threads 8 4
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 8 MB 3 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 1 1
Operating temperature Unknown - 67.4°C Unknown - 65.3°C

overclocking

Overclocked clock speed 4.69 GHz 3.57 GHz
Overclocked clock speed (Water) 4.8 GHz 3.56 GHz
Overclocked clock speed (Air) 4.69 GHz 3.57 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 4000 Intel® HD Graphics 4000
Number of displays supported 3 3
GPU clock speed 650 MHz 650 MHz
Turbo clock speed 1,150 MHz 1,050 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Core i7 3770K
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Intel Core i3 3245
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