Intel Core i7-870 vs Intel Core i5-655K

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CPU comparison with benchmarks

-VS-

CPU lineage

Intel Core i7-870 or Intel Core i7-870 – which processor offers superior performance? In this comparison, we examine disparities and assess which of these two CPUs outperforms the other. We delve into technical specifications and benchmark outcomes.
The Intel Core i7-870 features 4 processor cores and has the capability to manage 8 threads concurrently.
It was released in Q2/2010 and belongs to the 1 generation of the Intel Core i7 series.
To use the Intel Core i7-870, you'll need a motherboard with a LGA 1156 socket.
The Intel Core i5-655K features 2 processor cores and has the capability to manage 4 threads concurrently.
It was released in Q1/2010 and belongs to the 1 generation of the Intel Core i5 series.
To use the Intel Core i5-655K, you'll need a motherboard with a LGA 1156 socket.
Desktop / Server Segment Desktop / Server
Intel Core i7-870 Name Intel Core i5-655K
Intel Core i7 Family Intel Core i5
1 Generation 1
Intel Core i7 800 Group Intel Core i5 600
 
 

CPU Cores and Base Frequency

The Intel Core i7-870 has 4 CPU cores and can calculate 8 threads in parallel.
The clock frequency of the Intel Core i7-870 is 2.93 GHz
and turbo frequency for one core is 3.6 GHz.
The Intel Core i5-655K has 2 CPU cores and can calculate 4 threads in parallel.
The clock frequency of the Intel Core i5-655K is 3.2 GHz
and turbo frequency for one core is 3.46 GHz.
3.6 GHz Turbo Frequency (1 core) 3.46 GHz
No Overclocking Yes
normal Core architecture normal
2.93 GHz Frequency 3.2 GHz
8 Threads 4
Yes Hyperthreading Yes
4 CPU Cores 2
4x Cores 2x
 
 

Internal Graphics

The Intel Core i7-870 does not have integrated graphics.
The Intel Core i5-655K has integrated graphics, called iGPU for short.
Specifically, the Intel Core i5-655K uses the Intel HD Graphics (Westmere), which has 24 texture shaders
and 12 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
-- GPU frequency 0.5 GHz
-- Release date Q1/2010
-- Direct X 10.1
GPU name Intel HD Graphics (Westmere)
-- Technology 32 nm
-- Max. displays --
-- Shaders 24
0 bytes Max. GPU Memory 2.0 GB
-- Execution units 12
-- Generation 5
-- GPU (Turbo) 0.73 GHz
 
 

Artificial Intelligence and Machine Learning

-- AI specifications --
-- AI hardware --
 
 

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.
-- AVC Decode
-- VC-1 No
-- VP9 No
-- h265 / HEVC (10 bit) No
-- h264 Decode
-- VP8 No
-- h265 / HEVC (8 bit) No
-- JPEG No
-- AV1 No
 
 

Memory & PCIe

The processor supports a maximum memory capacity of 16.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 21.3 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
The processor supports a maximum memory capacity of 16.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 21.0 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
2 Memory channels 2
16.0 GB Max. Memory 16.0 GB
pci PCIe pci
No AES-NI Yes
No ECC No
21.3 GB/s Bandwidth 21.0 GB/s
DDR3-1333 Memory type DDR3-1066, DDR3-1333
 
 

Thermal Management

The processor has a thermal design power (TDP) of 95 W watts.
TDP indicates the cooling solution needed to effectively manage the processor's heat. It generally provides an approximate indication of the actual power consumption of the CPU itself.
The processor has a thermal design power (TDP) of 73 W watts.
-- Tjunction max --
95 W TDP (PL1 / PBP) 73 W
 
 

Technical details

The Intel Core i7-870 is manufactured using a 45 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
In total, this processor boasts a generous 8.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The Intel Core i5-655K is manufactured using a 32 nm process.
In total, this processor boasts a generous 4.0 MB cache.
Q2/2010 Release date Q1/2010
-- Part Number --
1.0 MB L2-Cache 512.0 KB
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
SSE4.1, SSE4.2 ISA extensions SSE4.1, SSE4.2
Monolithic Chip design Monolithic
Lynnfield Architecture Clarkdale
45 nm Technology 32 nm
LGA 1156 Socket LGA 1156
Windows 10, Linux Operating systems Windows 10, Linux
-- Release price 177 $
Technical data sheet Documents Technical data sheet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
8.0 MB L3-Cache 4.0 MB