Intel Core 2 Quad Q8400s vs Intel Core i5-6685R

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CPU comparison with benchmarks

-VS-

CPU lineage

Intel Core 2 Quad Q8400s or Intel Core 2 Quad Q8400s – 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 2 Quad Q8400s features 4 processor cores and has the capability to manage 4 threads concurrently.
It was released in Q2/2009 and belongs to the 2 generation of the Intel Core2 Quad series.
To use the Intel Core 2 Quad Q8400s, you'll need a motherboard with a LGA 775 socket.
The Intel Core i5-6685R features 4 processor cores and has the capability to manage 4 threads concurrently.
It was released in Q2/2016 and belongs to the 6 generation of the Intel Core i5 series.
To use the Intel Core i5-6685R, you'll need a motherboard with a BGA 1440 socket.
Desktop / Server Segment Desktop / Server
Intel Core 2 Quad Q8000/Q9000 Group Intel Core i 6000
Intel Core2 Quad Family Intel Core i5
2 Generation 6
Intel Core 2 Quad Q8400s Name Intel Core i5-6685R
 
 

CPU Cores and Base Frequency

The Intel Core 2 Quad Q8400s has 4 CPU cores and can calculate 4 threads in parallel.
The clock frequency of the Intel Core 2 Quad Q8400s is 2.66 GHz
The Intel Core i5-6685R has 4 CPU cores and can calculate 4 threads in parallel.
The clock frequency of the Intel Core i5-6685R is 3.2 GHz
and turbo frequency for one core is 3.8 GHz.
4x Cores 4x
normal Core architecture normal
No Hyperthreading No
4 Threads 4
None None 3.8 GHz
No Overclocking No
2.66 GHz Frequency 3.2 GHz
4 CPU Cores 4
None None 3.4 GHz
 
 

Internal Graphics

The Intel Core 2 Quad Q8400s does not have integrated graphics.
The Intel Core i5-6685R has integrated graphics, called iGPU for short.
Specifically, the Intel Core i5-6685R uses the Intel Iris Pro Graphics 580, which has 576 texture shaders
and 72 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
-- Direct X 12.0
0 bytes Max. GPU Memory 32.0 GB
-- Execution units 72
-- Generation 9
-- GPU (Turbo) 1.15 GHz
-- Release date Q3/2015
GPU name Intel Iris Pro Graphics 580
-- Shaders 576
-- Max. displays --
-- Technology 14 nm
-- GPU frequency 0.35 GHz
 
 

Artificial Intelligence and Machine Learning

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

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

Memory & PCIe

The processor supports a maximum memory capacity of 64.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 34.1 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
No ECC No
16.0 GB Max. Memory 64.0 GB
2 Memory channels 2
No AES-NI Yes
DDR3-1066, DDR2-800 Memory type DDR4-2133
pci PCIe pci
-- Bandwidth 34.1 GB/s
 
 

Thermal Management

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

Technical details

The Intel Core 2 Quad Q8400s is manufactured using a 45 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The Intel Core i5-6685R is manufactured using a 14 nm process.
In total, this processor boasts a generous 6.0 MB cache.
-- Part Number --
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
4.0 MB L2-Cache 0 bytes
Monolithic Chip design Monolithic
-- Release price --
Windows 10, Linux Operating systems Windows 10, Linux
VT-x, VT-d Virtualization VT-x, VT-x EPT, VT-d
0 bytes L3-Cache 6.0 MB
Q2/2009 Release date Q2/2016
Technical data sheet Documents Technical data sheet
LGA 775 Socket BGA 1440
Yorkfield (Penryn) Architecture Skylake S
45 nm Technology 14 nm
SSE3, SSE4.1, MMX, SSE2 ISA extensions SSE4.1, SSE4.2, AVX2