Intel Core i7-980X vs i7-3820

Mini Review

Intel Core i7-980X advantages

  • More CPU cores on the Core i7-980X help to process many simultaneous programs or threads.
  • The Intel i7-980X has clock multiplier unlocked. As a result, the microprocessor can be effortlessly overclocked on most motherboards to achieve greater performance.

Intel Core i7-3820 advantages

  • The i7-3820 has higher operating frequency than the i7-980X.
  • The Core i7-3820 features AVX instructions, that were introduced in the recent past. These extensions are not broadly supported by applications yet, however this should improve in future programs.
  • Intel actively supports Socket 2011, used by the Intel i7-3820, and is going to release new products for the socket in the future.

i7-980X vs i7-3820 specifications comparison

The graphs below compare the most important characteristics of the Core i7-3820 and Intel i7-980X microprocessors. These features, as well as an IPC (instructions per cycle) number, determine how well a processor performs. The "Number of cores / threads" graph shows the number of cores (darker area). Lighter area on the graph corresponds to the number of extra threads, provided by Hyper-Threading technology. The "Operating frequency" chart uses dark color to represent base frequency, while lighter area is for additional frequency, provided by Turbo feature. Darker area on the "On-chip cache" graph is for the On-chip L2 cache. Lighter area is for the L3 cache cache. Although the L3 cache cache is usually larger than the On-chip L2 cache, it is always slower.

The number of cores / threads
20
16
12
8
4
0
 
 
12
 
8
 
 
Higher is better
Operating frequency
5
4
3
2
1
0
 
 
3.6GHz
 
3.9GHz
 
 
Higher is better
On-chip L2 + L3 cache
20
16
12
8
4
0
 
 
13.5MB
 
11MB
 
 
Higher is better
Thermal Design Power
200
160
120
80
40
0
 
 
130W
 
130W
 
 
Lower is better

  - Intel Core i7-980X       - Intel Core i7-3820

Detailed side by side comparison of i7-980X vs i7-3820 specs can be found in the "Specifications" tab.


Pros and Cons summary

Core i7-980X Core i7-3820
General recommendations:
Comes with more CPU cores,
Executes more threads at once,
Allows easy overclocking
  General recommendations:
Clocked higher,
Features AVX instructions,
New CPUs are planned for the socket

Drawbacks:

Operating frequency is lower,
Does not support some instructions,
Obsolete socket
 

Drawbacks:

Has fewer CPU cores,
Cannot execute as many threads at once

Similar processors

Core i7-980X Core i7-3820
 

Similar processors use the same core and fit the same socket as Core i7-980X and Intel i7-3820.


Where to buy


Both CPUs are obsolete. If you want to buy one of them, the best place to look are online auction sites, like eBay. Third party vendors at Amazon may also carry them.
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More comparisons

Compare Intel Core i7-980X with...

Other Core i7 CPU:

Any CPU:


Compare Intel Core i7-3820 with...

Other Core i7 Extreme Edition CPU:

Any CPU:


Note: To see differences with any CPU, type in any combination of the following into the "Any CPU" field: manufacturer name, full or partial family name, model number, part number, core name, socket name, operating frequency, bus speed (must have FSB suffix), and the last level cache. Here are some valid searches:

  i5-3570K
  Intel Celeron 2 GHz
  Nehalem
  Pentium 4 800FSB
  AMD 3.3GHz 8MB

Specifications

Please visit Intel Core i7-980X and Intel Core i7-3820 pages for more complete specifications of both microprocessors.

 Intel Core i7-980XIntel Core i7-3820
Market segmentDesktop
ManufacturerIntel
FamilyCore i7 Extreme EditionCore i7
Basic details
Model numberi7-980Xi7-3820
CPU part numberAT80613003543AECM8061901049606
Box part numberBX80613I7980XBX80619I73820
Introduction dateMarch 16, 2010February 12, 2012
Current official price $294 (as of Jan 2014)
 
CPU features
Core nameGulftownSandy Bridge-E
Platform name2010 HEDT 
MicroarchitectureNehalemSandy Bridge
Technology (micron)0.032
Data width (bits)64
SocketSocket 1366Socket 2011
Frequency (MHz)33333600
Turbo Frequency (MHz)3600 / 3600 / 3467 / 3467 / 3467 / 34673900
Bus speed (MHz)3200 (HT/QPI) 
Clock Multiplier2536
L1 cache192 KB (code) / 192 KB (data)128 KB (code) / 128 KB (data)
L2 cache (KB)15361024
L3 cache (KB)1228810240
Max temperature (°C)67.966.8
TDP (Watt)130
Core voltage (V)0.8 - 1.3750.6 - 1.35
Cores64
Threads128
Multiprocessing1
 
Instruction set extensions
AES / Advanced Encryption Standard+
AMD64 / EM64T 64-bit technology+
AVX / Advanced Vector Extensions-+
MMX+
SSE+
SSE2+
SSE3+
SSE4.1+
SSE4.2+
SSSE3 / Supplemental SSE3+
 
Supported technologies
Hyper-Threading+
PowerNow! / Enhanced SpeedStep+
Turbo Core / Turbo Boost+
Unlocked multiplier+-
Virtualization+
Virus Protection / Execute Disable bit+
 
Integrated Graphics
GPU TypeNone
 
Integrated Memory Controller(s)
The number of controllers1
Memory channels34
Supported memoryDDR3-1066DDR3-1066, DDR3-1333, DDR3-1600
Notes:

Rows with different specifications or features are highlighted.

For detailed specifications of "Intel Core i7-980X" or "Intel Core i7-3820" parts please click on the links in the table header.

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