Intel Core i7-2700K vs Intel Core i5-661

Comparative analysis of Intel Core i7-2700K and Intel Core i5-661 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Graphics interfaces, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. 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 i7-2700K

  • CPU is newer: launch date 1 year(s) 8 month(s) later
  • Processor is unlocked, an unlocked multiplier allows for easier overclocking
  • 2 more cores, run more applications at once: 4 vs 2
  • 4 more threads: 8 vs 4
  • Around 8% higher clock speed: 3.90 GHz vs 3.60 GHz
  • Around 4% higher maximum core temperature: 72.6°C vs 69.8°C
  • 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
  • 2x more L3 cache, more data can be stored in the L3 cache for quick access later
  • Around 95% higher maximum memory size: 32 GB vs 16.38 GB
  • Around 26% better performance in PassMark - Single thread mark: 1825 vs 1448
  • 2.3x better performance in PassMark - CPU mark: 5748 vs 2470
  • Around 63% better performance in Geekbench 4 - Single Core: 846 vs 518
  • 2.7x better performance in Geekbench 4 - Multi-Core: 3277 vs 1214
Specifications (specs)
Launch date October 2011 vs January 2010
Unlocked Unlocked vs Locked
Number of cores 4 vs 2
Number of threads 8 vs 4
Maximum frequency 3.90 GHz vs 3.60 GHz
Maximum core temperature 72.6°C vs 69.8°C
L1 cache 64 KB (per core) vs 64 KB (per core)
L2 cache 256 KB (per core) vs 256 KB (per core)
L3 cache 8192 KB (shared) vs 4096 KB (shared)
Maximum memory size 32 GB vs 16.38 GB
Benchmarks
PassMark - Single thread mark 1825 vs 1448
PassMark - CPU mark 5748 vs 2470
Geekbench 4 - Single Core 846 vs 518
Geekbench 4 - Multi-Core 3277 vs 1214

Reasons to consider the Intel Core i5-661

  • Around 9% lower typical power consumption: 87 Watt vs 95 Watt
Thermal Design Power (TDP) 87 Watt vs 95 Watt

Compare benchmarks

CPU 1: Intel Core i7-2700K
CPU 2: Intel Core i5-661

PassMark - Single thread mark
CPU 1
CPU 2
1825
1448
PassMark - CPU mark
CPU 1
CPU 2
5748
2470
Geekbench 4 - Single Core
CPU 1
CPU 2
846
518
Geekbench 4 - Multi-Core
CPU 1
CPU 2
3277
1214
Name Intel Core i7-2700K Intel Core i5-661
PassMark - Single thread mark 1825 1448
PassMark - CPU mark 5748 2470
Geekbench 4 - Single Core 846 518
Geekbench 4 - Multi-Core 3277 1214
3DMark Fire Strike - Physics Score 3461
CompuBench 1.5 Desktop - Face Detection (mPixels/s) 4.472
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) 66.305
CompuBench 1.5 Desktop - T-Rex (Frames/s) 0.557
CompuBench 1.5 Desktop - Video Composition (Frames/s) 1.632
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) 4.935

Compare specifications (specs)

Intel Core i7-2700K Intel Core i5-661

Essentials

Architecture codename Sandy Bridge Clarkdale
Launch date October 2011 January 2010
Launch price (MSRP) $514 $252
Place in performance rating 2242 2243
Price now $288.99 $99.99
Processor Number i7-2700K i5-661
Series Legacy Intel® Core™ Processors Legacy Intel® Core™ Processors
Status Discontinued Discontinued
Value for money (0-100) 8.88 9.35
Vertical segment Desktop Desktop

Performance

64 bit support
Base frequency 3.50 GHz 3.33 GHz
Bus Speed 5 GT/s DMI 2.5 GT/s DMI
Die size 216 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 8192 KB (shared) 4096 KB (shared)
Manufacturing process technology 32 nm 32 nm
Maximum core temperature 72.6°C 69.8°C
Maximum frequency 3.90 GHz 3.60 GHz
Number of cores 4 2
Number of threads 8 4
Transistor count 1160 million 382 million
Unlocked
VID voltage range 0.6500V-1.4000V

Memory

Max memory channels 2 2
Maximum memory bandwidth 21 GB/s 21 GB/s
Maximum memory size 32 GB 16.38 GB
Supported memory types DDR3 1066/1333 DDR3 1066/1333

Graphics

Device ID 0x112
Graphics base frequency 850 MHz 900 MHz
Graphics max dynamic frequency 1.35 GHz
Graphics max frequency 1.35 GHz
Intel® Clear Video HD technology
Intel® Flexible Display Interface (Intel® FDI)
Intel® InTru™ 3D technology
Intel® Quick Sync Video
Processor graphics Intel® HD Graphics 3000 Intel HD Graphics

Graphics interfaces

Number of displays supported 2 2
Wireless Display (WiDi) support

Compatibility

Low Halogen Options Available
Max number of CPUs in a configuration 1 1
Package Size 37.5mm x 37.5mm 37.5mm x 37.5mm
Sockets supported LGA1155 FCLGA1156
Thermal Design Power (TDP) 95 Watt 87 Watt

Peripherals

Max number of PCIe lanes 16 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
Flexible Display interface (FDI)
Idle States
Instruction set extensions Intel® SSE4.1, Intel® SSE4.2, Intel® AVX Intel® SSE4.2
Intel 64
Intel® Advanced Vector Extensions (AVX)
Intel® AES New Instructions
Intel® Fast Memory Access
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Thermal Monitoring
Intel® Demand Based Switching
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)