Intel Core i7-3820 vs Intel Core i5-661

Comparative analysis of Intel Core i7-3820 and Intel Core i5-661 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization, Graphics, Graphics interfaces. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, 3DMark Fire Strike - Physics Score, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s).

 

Differences

Reasons to consider the Intel Core i7-3820

  • CPU is newer: launch date 2 year(s) 0 month(s) later
  • 2 more cores, run more applications at once: 4 vs 2
  • 4 more threads: 8 vs 4
  • Around 6% higher clock speed: 3.80 GHz vs 3.60 GHz
  • 2x more L1 cache, more data can be stored in the L1 cache for quick access later
  • 2x more L2 cache, more data can be stored in the L2 cache for quick access later
  • 2.5x more L3 cache, more data can be stored in the L3 cache for quick access later
  • 3.9x more maximum memory size: 64.23 GB vs 16.38 GB
  • Around 21% better performance in PassMark - Single thread mark: 1745 vs 1448
  • 2.3x better performance in PassMark - CPU mark: 5767 vs 2470
  • Around 46% better performance in Geekbench 4 - Single Core: 756 vs 518
  • 2.6x better performance in Geekbench 4 - Multi-Core: 3163 vs 1214
Specifications (specs)
Launch date February 2012 vs January 2010
Number of cores 4 vs 2
Number of threads 8 vs 4
Maximum frequency 3.80 GHz vs 3.60 GHz
L1 cache 64 KB (per core) vs 64 KB (per core)
L2 cache 256 KB (per core) vs 256 KB (per core)
L3 cache 10240 KB (shared) vs 4096 KB (shared)
Maximum memory size 64.23 GB vs 16.38 GB
Benchmarks
PassMark - Single thread mark 1745 vs 1448
PassMark - CPU mark 5767 vs 2470
Geekbench 4 - Single Core 756 vs 518
Geekbench 4 - Multi-Core 3163 vs 1214

Reasons to consider the Intel Core i5-661

  • Around 4% higher maximum core temperature: 69.8°C vs 66.8°C
  • Around 49% lower typical power consumption: 87 Watt vs 130 Watt
Maximum core temperature 69.8°C vs 66.8°C
Thermal Design Power (TDP) 87 Watt vs 130 Watt

Compare benchmarks

CPU 1: Intel Core i7-3820
CPU 2: Intel Core i5-661

PassMark - Single thread mark
CPU 1
CPU 2
1745
1448
PassMark - CPU mark
CPU 1
CPU 2
5767
2470
Geekbench 4 - Single Core
CPU 1
CPU 2
756
518
Geekbench 4 - Multi-Core
CPU 1
CPU 2
3163
1214
Name Intel Core i7-3820 Intel Core i5-661
PassMark - Single thread mark 1745 1448
PassMark - CPU mark 5767 2470
Geekbench 4 - Single Core 756 518
Geekbench 4 - Multi-Core 3163 1214
3DMark Fire Strike - Physics Score 3318
CompuBench 1.5 Desktop - Face Detection (mPixels/s) 4.665
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) 84.218
CompuBench 1.5 Desktop - T-Rex (Frames/s) 0.606
CompuBench 1.5 Desktop - Video Composition (Frames/s) 2.267
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) 5.758

Compare specifications (specs)

Intel Core i7-3820 Intel Core i5-661

Essentials

Architecture codename Sandy Bridge E Clarkdale
Launch date February 2012 January 2010
Launch price (MSRP) $400 $252
Place in performance rating 2232 2243
Price now $199.99 $99.99
Processor Number i7-3820 i5-661
Series Intel® Core™ X-series Processors Legacy Intel® Core™ Processors
Status Discontinued Discontinued
Value for money (0-100) 13.26 9.35
Vertical segment Desktop Desktop

Performance

64 bit support
Base frequency 3.60 GHz 3.33 GHz
Bus Speed 5 GT/s DMI2 2.5 GT/s DMI
Die size 294 mm 81 mm2
L1 cache 64 KB (per core) 64 KB (per core)
L2 cache 256 KB (per core) 256 KB (per core)
L3 cache 10240 KB (shared) 4096 KB (shared)
Manufacturing process technology 32 nm 32 nm
Maximum case temperature (TCase) 67 °C
Maximum core temperature 66.8°C 69.8°C
Maximum frequency 3.80 GHz 3.60 GHz
Number of cores 4 2
Number of threads 8 4
Transistor count 1270 million 382 million
VID voltage range 0.600V – 1.350V 0.6500V-1.4000V

Memory

Max memory channels 4 2
Maximum memory bandwidth 51.2 GB/s 21 GB/s
Maximum memory size 64.23 GB 16.38 GB
Supported memory types DDR3 1066/1333/1600 DDR3 1066/1333

Compatibility

Low Halogen Options Available
Max number of CPUs in a configuration 1 1
Package Size 52.5mm x 45.0mm 37.5mm x 37.5mm
Sockets supported FCLGA2011 FCLGA1156
Thermal Design Power (TDP) 130 Watt 87 Watt

Peripherals

Max number of PCIe lanes 40 16
PCI Express revision 2.0 2.0
PCIe configurations 1x16, 2x8

Security & Reliability

Execute Disable Bit (EDB)
Intel® Identity Protection technology
Intel® Trusted Execution technology (TXT)

Advanced Technologies

Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions Intel® SSE4.2, Intel® AVX Intel® SSE4.2
Intel 64
Intel® Advanced Vector Extensions (AVX)
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Smart Response technology
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Thermal Monitoring
Flexible Display interface (FDI)
Physical Address Extensions (PAE) 36-bit

Virtualization

Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)

Graphics

Graphics base frequency 900 MHz
Intel® Clear Video HD technology
Intel® Flexible Display Interface (Intel® FDI)
Processor graphics Intel HD Graphics

Graphics interfaces

Number of displays supported 2