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Intel Core i7-3820 vs i7-870

Mini Review

Intel Core i7-3820 advantages

  • Operating frequency of this microprocessor is higher than the frequency of the Intel Core i7-870 processor.
  • The CPU supports AES extension to the instruction set, used to accelerate AES encryption and decryption. The technology is valuable if you need to protect your disk or network data.
  • The microprocessor has AVX instructions enabled. Although these extensions are not broadly used in applications yet, their support should improve in future apps.

Intel Core i7-870 advantages

  • The processor is 27% more energy efficient.

i7-3820 vs i7-870 specifications comparison

The charts below show the difference between Core i7-870 and Intel i7-3820 most important characteristics. These features, along with an IPC (instructions per cycle) number, determine how well a CPU performs. The "Number of cores / threads" graph shows the number of cores (darker area). Lighter area on the graph corresponds to the number of additional threads, offered by Hyper-Threading technology. The "Operating frequency" chart uses dark color to represent base frequency, whereas lighter area is for extra 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. While the L3 cache cache is usually larger than the On-chip L2 cache, it is always slower.

The number of cores / threads
9
7.2
5.4
3.6
1.8
0
 
 
8
 
8
 
 
Higher is better
Operating frequency
5
4
3
2
1
0
 
 
3.8GHz
 
3.6GHz
 
 
Higher is better
On-chip L2 + L3 cache
20
16
12
8
4
0
 
 
11MB
 
9MB
 
 
Higher is better
Thermal Design Power
200
160
120
80
40
0
 
 
130W
 
95W
 
 
Lower is better

  - Intel Core i7-3820       - Intel Core i7-870

Detailed side by side comparison of i7-3820 vs Intel Core i7-870 specs can be found in the "Specifications" tab.


Pros and Cons summary

Core i7-3820 Core i7-870
General recommendations:
Clocked higher,
Features AVX instructions
  General recommendations:
Lower power

Drawbacks:

Requires somewhat more power
 

Drawbacks:

Operating frequency is lower,
Does not support some instructions,
The socket is obsolete

Similar processors

Core i7-3820 Core i7-870
 

Similar microprocessors use the same socket and architecture as Intel Core i7-3820 and Intel i7-870, however their performance and other characteristics are slightly different.


Where to buy


Both processors are obsolete. For this reason the best place to find them is eBay. They may also be available from third party vendors at Amazon.
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More comparisons

Compare Intel Core i7-3820 with...

Other Core i7 CPU:

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Compare Intel Core i7-870 with...

Other Core i7 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
  Sandy Bridge
  Pentium 4 800FSB
  AMD 3.3GHz 8MB

Specifications

Please visit Intel Core i7-3820 and Intel Core i7-870 pages for more detailed specifications of both microprocessors.

 Intel Core i7-3820Intel Core i7-870
Market segmentDesktop
ManufacturerIntel
FamilyCore i7
Basic details
Model numberi7-3820i7-870
CPU part numberCM8061901049606BV80605001905AI
Box part numberBX80619I73820BX80605I7870
BXC80605I7870
Introduction dateFebruary 12, 2012September 8, 2009
Current official price$294 (as of May 2014) 
 
CPU features
Core nameSandy Bridge-ELynnfield
MicroarchitectureSandy BridgeNehalem
Technology (micron)0.0320.045
Data width (bits)64
SocketSocket 2011Socket 1156
Frequency (MHz)36002933
Turbo Frequency (MHz)38003600 / 3467 / 3200 / 3200
Clock Multiplier3622
L1 cache128 KB (code) / 128 KB (data)
L2 cache (KB)1024
L3 cache (KB)102408192
Max temperature (°C)66.872.7
TDP (Watt)13095
Max power dissipation (Watt) 189.78
Core voltage (V)0.6 - 1.350.65 - 1.4
Cores4
Threads8
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+
Trusted Execution-+
Turbo Core / Turbo Boost+
Virtualization+
Virus Protection / Execute Disable bit+
 
Integrated Graphics
GPU TypeNone
 
Integrated Memory Controller(s)
The number of controllers1
Memory channels42
Supported memoryDDR3-1066, DDR3-1333, DDR3-1600DDR3-1066, DDR3-1333
Maximum memory bandwidth (GB/s)51.221.3
Notes:

Rows with different specifications or features are highlighted.

For detailed specifications of "Intel Core i7-3820" or "Intel Core i7-870" parts please click on the links in the table header.

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