CPUBoss Review Our evaluation of 980X vs 3820

Performance

Benchmark performance using all cores

Cinebench R10 32-bit, PassMark, GeekBench (32-bit) and GeekBench (64-bit)

Single-core Performance

Individual core benchmark performance

Cinebench R10 32-bit (1-core) and PassMark (Single Core)

Overclocking

How much speed can you get out of the processor?

Unlocked, Maximum Overclocked Clock Speed (Air) and 2 more

Value

Are you paying a premium for performance?

Performance Per Dollar

No winner declared

Too close to call

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VS

Differences What are the advantages of each

Front view of Intel Core i7 980X

Reasons to consider the
Intel Core i7 980X

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More l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
More l3 cache 12 MB vs 10 MB 20% more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 12 vs 8 4 more threads
More cores 6 vs 4 2 more cores; run more applications at once
Slightly more l2 cache per core 0.33 MB/core vs 0.25 MB/core Around 35% more l2 cache per core
Better cinebench r10 32Bit score 27,056 vs 23,387 More than 15% better cinebench r10 32Bit score
Better overclocked clock speed (Water) 4.9 GHz vs 4.38 GHz More than 10% better overclocked clock speed (Water)
Front view of Intel Core i7 3820

Reasons to consider the
Intel Core i7 3820

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Higher turbo clock speed 3.8 GHz vs 3.6 GHz More than 5% higher turbo clock speed
Higher clock speed 3.6 GHz vs 3.33 GHz Around 10% higher clock speed
Supports more RAM 65,536 MB vs 24,576 MB Supports around 2.8x more RAM
Better PassMark (Single core) score 1,937 vs 1,444 Around 35% better PassMark (Single core) score
Significantly better performance per dollar 4.12 pt/$ vs 0.97 pt/$ Around 4.2x better performance per dollar
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Better 3DMark11 physics score 10,460 vs 8,800 Around 20% better 3DMark11 physics score
Newer Feb, 2012 vs Mar, 2010 Release date over 1 years later
Lower annual commercial energy cost 138.93 $/year vs 148.92 $/year More than 5% lower annual commercial energy cost

Benchmarks Real world tests of Core i7 980X vs 3820

GeekBench (32-bit) Data courtesy Primate Labs

Core i7 980X
14,533
Core i7 3820
12,550

3D Mark 11 (Physics)

Core i7 980X
8,800
Core i7 3820
10,460

Cinebench R10 32-Bit

Core i7 980X
27,056
Core i7 3820
23,387

Cinebench R10 32-Bit (Single Core)

sysmark 2007 (overall)

PassMark Data courtesy PassMark

Reviews Word on the street

Core i7 980X  vs 3820 

9.0
8.0
No wonder the Core i7 980X is a prince among processors.
Core i7 980X

Specifications Full list of technical specs

summary

Core i7 980X  vs
3820 
Clock speed 3.33 GHz 3.6 GHz
Turbo clock speed 3.6 GHz 3.8 GHz
Cores Hexa core Quad core
Socket type
LGA 1366
LGA 2011
Is unlocked Yes Yes

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 130W 130W
Annual home energy cost 50.68 $/year 49.49 $/year
Annual commercial energy cost 148.92 $/year 138.93 $/year
Performance per watt 5.23 pt/W 6.23 pt/W
Idle power consumption 79.5W 82.6W
Peak power consumption 170W 158.6W
Typical power consumption N/A 139.6W

bus

Architecture QPI DMI 2.0
Number of links 1 1
Transfer rate 6,400 MT/s 5,000 MT/s

details

Core i7 980X  vs
3820 
Architecture x86-64 x86-64
Threads 12 8
L2 cache 2 MB 1 MB
L2 cache per core 0.33 MB/core 0.25 MB/core
L3 cache 12 MB 10 MB
L3 cache per core 2 MB/core 2.5 MB/core
Manufacture process 32 nm 32 nm
Transistor count 1,170,000,000 1,270,000,000
Max CPUs 1 1
Clock multiplier 25 36
Voltage range 0.8 - 1.38V 0.6 - 1.35V
Operating temperature Unknown - 67.9°C Unknown - 66.8°C

overclocking

Overclock popularity 85 142
Overclocked clock speed 4.54 GHz 4.7 GHz
Overclocked clock speed (Water) 4.9 GHz 4.38 GHz
Overclocked clock speed (Air) 4.54 GHz 4.7 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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
Channels Triple Channel Quad Channel
Supports ECC No No
Maximum bandwidth 25,599.99 MB/s 51,200 MB/s
Maximum memory size 24,576 MB 65,536 MB
Intel Core i7 980X
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Intel Core i7 3820
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