CPUBoss Review Our evaluation of 3770K vs 3280 among all CPUs

Performance

Benchmark performance using all cores
Core i7 3770K
7.4
Opteron 3280
5.5
FX 8350
6.2
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance
Core i7 3770K
8.5
Opteron 3280
6.3
FX 8350
7.6
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics
Core i7 3770K
7.2
Opteron 3280
0.0
FX 8350
0.0
Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing
Core i7 3770K
6.7
Opteron 3280
0.0
FX 8350
0.0
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?
Core i7 3770K
5.3
Opteron 3280
5.1
FX 8350
5.0
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?
Core i7 3770K
6.1
Opteron 3280
n.d.
FX 8350
5.6
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more
8.1

CPUBoss Score

Combination of all six facets
Core i7 3770K
8.1
Opteron 3280
5.2
FX 8350
5.4

Winner
Intel Core i7 3770K 

CPUBoss recommends the Intel Core i7 3770K  based on its performance and single-core performance.

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VS

Intel Core i7 3770K

Front view of Intel Core i7 3770K
Front view of AMD Opteron 3280

AMD Opteron 3280

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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
Significantly higher clock speed 3.5 GHz vs 2.4 GHz More than 45% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Higher turbo clock speed 3.9 GHz vs 3.4 GHz Around 15% higher turbo clock speed
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better PassMark (Single core) score 2,084 vs 875 Around 2.5x better PassMark (Single core) score
Much better overclocked clock speed (Air) 4.69 GHz vs 2.87 GHz Around 65% better overclocked clock speed (Air)
Significantly more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
Better PassMark score 9,544 vs 5,330 Around 80% better PassMark score
Much better overclocked clock speed (Water) 4.8 GHz vs 2.4 GHz More than 2x better overclocked clock speed (Water)
Higher Maximum operating temperature 67.4 °C vs 61.1 °C More than 10% higher Maximum operating temperature
Front view of AMD Opteron 3280

Reasons to consider the
AMD Opteron 3280

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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
Much lower typical power consumption 52.81W vs 114.97W 2.2x lower typical power consumption
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
More cores 8 vs 4 Twice as many cores; run more applications at once
Much better performance per watt 10.33 pt/W vs 4.55 pt/W More than 2.2x better performance per watt
Much lower annual home energy cost 15.66 $/year vs 42.19 $/year 2.7x lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 112.39 $/year Around 50% lower annual commercial energy cost

Benchmarks Real world tests of Core i7 3770K vs Opteron 3280

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i7 3770K
13,098
Opteron 3280
2,986

GeekBench 3 (Single core) Data courtesy Primate Labs

Core i7 3770K
3,304
Opteron 3280
900

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 3770K
2,620,000 MB/s
Opteron 3280
1,710,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i7 3770K
13,703
Opteron 3280
7,233

GeekBench

Core i7 3770K
17,972
Opteron 3280
7,233

PassMark Data courtesy Passmark

Core i7 3770K
9,544
Opteron 3280
5,330

PassMark (Single Core)

Core i7 3770K
2,084
Opteron 3280
875

Specifications Full list of technical specs

summary

 Core i7 3770K  vs
Opteron 3280 
Clock speed 3.5 GHz 2.4 GHz
Turbo clock speed 3.9 GHz 3.4 GHz
Cores Quad core Octa core
Socket type
LGA 1155
AM3+
Is unlocked Yes No

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

power consumption
TDP 77W 65W
Annual home energy cost 42.19 $/year 15.66 $/year
Annual commercial energy cost 112.39 $/year 56.94 $/year
Performance per watt 4.55 pt/W 10.33 pt/W
Typical power consumption 114.97W 52.81W

bus
Architecture DMI HyperTransport 3.0

details

 Core i7 3770K  vs
Opteron 3280 
Threads 8 8
L2 cache 1 MB 8 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 1 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 1 1
Clock multiplier 35 12
Operating temperature Unknown - 67.4°C Unknown - 61.1°C

overclocking
Overclocked clock speed 4.69 GHz 2.87 GHz
Overclocked clock speed (Water) 4.8 GHz 2.4 GHz
Overclocked clock speed (Air) 4.69 GHz 2.87 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
Intel Core i7 3770K
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AMD Opteron 3280
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