Intel Core i5-661 vs Intel Core2 Duo E8500

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CPU comparison with benchmarks

-VS-

CPU lineage

Intel Core i5-661 or Intel Core i5-661 – 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 i5-661 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 i5-661, you'll need a motherboard with a LGA 1156 socket.
The Intel Core2 Duo E8500 features 2 processor cores and has the capability to manage 2 threads concurrently.
It was released in Q1/2008 and belongs to the 2 generation of the Intel Core2 Duo series.
To use the Intel Core2 Duo E8500, you'll need a motherboard with a LGA 775 socket.
Intel Core i5 Family Intel Core2 Duo
Desktop / Server Segment Desktop / Server
Intel Core i5-661 Name Intel Core2 Duo E8500
Intel Core i5 600 Group Intel Core 2 Duo E7000/E8000
1 Generation 2
 
 

CPU Cores and Base Frequency

The Intel Core i5-661 has 2 CPU cores and can calculate 4 threads in parallel.
The clock frequency of the Intel Core i5-661 is 3.33 GHz
and turbo frequency for one core is 3.6 GHz.
The Intel Core2 Duo E8500 has 2 CPU cores and can calculate 2 threads in parallel.
The clock frequency of the Intel Core2 Duo E8500 is 3.16 GHz
2x Cores 2x
3.33 GHz Frequency 3.16 GHz
2 CPU Cores 2
normal Core architecture normal
Yes Hyperthreading No
No Overclocking Yes
4 Threads 2
3.6 GHz Turbo Frequency (1 core) None
 
 

Internal Graphics

The Intel Core i5-661 has integrated graphics, called iGPU for short.
Specifically, the Intel Core i5-661 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.
The Intel Core2 Duo E8500 does not have integrated graphics.
0.9 GHz GPU (Turbo) --
Q1/2010 Release date --
12 Execution units --
10.1 Direct X --
-- Max. displays --
24 Shaders --
Intel HD Graphics (Westmere) GPU name
0.5 GHz GPU frequency --
2.0 GB Max. GPU Memory 0 bytes
5 Generation --
32 nm Technology --
 
 

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.
No VP8 --
No VP9 --
Decode AVC --
Decode h264 --
No JPEG --
No VC-1 --
No AV1 --
No h265 / HEVC (8 bit) --
No h265 / HEVC (10 bit) --
 
 

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 21.0 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
Yes AES-NI No
16.0 GB Max. Memory 16.0 GB
21.0 GB/s Bandwidth --
DDR3-1066, DDR3-1333 Memory type DDR3-1333, DDR2-1066
pci PCIe pci
2 Memory channels 2
No ECC No
 
 

Thermal Management

The processor has a thermal design power (TDP) of 73 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 65 W watts.
73 W TDP (PL1 / PBP) 65 W
-- Tjunction max --
 
 

Technical details

The Intel Core i5-661 is manufactured using a 32 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
In total, this processor boasts a generous 4.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The Intel Core2 Duo E8500 is manufactured using a 45 nm process.
Technical data sheet Documents Technical data sheet
Q1/2010 Release date Q1/2008
LGA 1156 Socket LGA 775
512.0 KB L2-Cache 6.0 MB
4.0 MB L3-Cache 0 bytes
Windows 10, Linux Operating systems Windows 10, Linux
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- Part Number --
Clarkdale Architecture Wolfdale (Penryn)
VT-x, VT-x EPT, VT-d Virtualization VT-x
177 $ Release price --
SSE4.1, SSE4.2 ISA extensions SSE3, MMX, SSE, SSE2, SSE 4.1
Monolithic Chip design Monolithic
32 nm Technology 45 nm