Core i7 820Q vs Core i7 640M
1st gen Core i7 CPU comparison


Core i7 820Q: 

	Processor: Intel Core i7 820Q @ 1.73GHz (4 Cores / 8 Threads), Motherboard: Dell 041WH1 (A16 BIOS), Chipset: Intel Core DMI, Memory: 8GB, Disk: T-FORCE 256GB, Graphics: NVIDIA Quadro FX 1800M 1GB, Audio: IDT 92HD81B1C5, Network: Intel 82577LM + Intel Centrino Ultimate-N 6300

	OS: Fedora Linux 37, Kernel: 6.1.14-200.fc37.x86_64 (x86_64), Desktop: GNOME Shell 43.3, Display Server: X Server, Compiler: GCC 12.2.1 20221121, File-System: ext4, Screen Resolution: 1920x1080

Core i7 640M: 

	Processor: Intel Core i7 640M @ 2.80GHz (2 Cores / 4 Threads), Motherboard: Dell 041WH1 (A16 BIOS), Chipset: Intel Core DRAM, Memory: 8GB, Disk: T-FORCE 256GB, Graphics: NVIDIA Quadro FX 1800M 1GB, Audio: IDT 92HD81B1C5, Network: Intel 82577LM + Intel Centrino Ultimate-N 6300

	OS: Fedora Linux 37, Kernel: 6.2.12-200.fc37.x86_64 (x86_64), Desktop: GNOME Shell 43.4, Display Server: X Server, Compiler: GCC 12.2.1 20221121, File-System: ext4, Screen Resolution: 1920x1080


7-Zip Compression 22.01
Test: Compression Rating
MIPS > Higher Is Better
Core i7 820Q . 12782 |=========================================================
Core i7 640M . 9230  |=========================================


7-Zip Compression 22.01
Test: Decompression Rating
MIPS > Higher Is Better
Core i7 820Q . 10928 |=========================================================
Core i7 640M . 8659  |=============================================


FFmpeg 6.0
Encoder: libx264 - Scenario: Live
Seconds < Lower Is Better


FFmpeg 6.0
Encoder: libx265 - Scenario: Live
Seconds < Lower Is Better


FFmpeg 6.0
Encoder: libx264 - Scenario: Platform
Seconds < Lower Is Better


FFmpeg 6.0
Encoder: libx265 - Scenario: Platform
Seconds < Lower Is Better


FLAC Audio Encoding 1.4
WAV To FLAC
Seconds < Lower Is Better
Core i7 820Q . 53.78 |=========================================================
Core i7 640M . 47.43 |==================================================


LAME MP3 Encoding 3.100
WAV To MP3
Seconds < Lower Is Better
Core i7 820Q . 64.37 |=========================================================
Core i7 640M . 50.66 |=============================================


PyBench 2018-02-16
Total For Average Test Times
Milliseconds < Lower Is Better
Core i7 820Q . 2700 |==========================================================
Core i7 640M . 2000 |===========================================


RAR Compression 6.0.2
Linux Source Tree Archiving To RAR
Seconds < Lower Is Better
Core i7 820Q . 164.61 |========================================================
Core i7 640M . 137.06 |===============================================


Sample Pi Program

Seconds < Lower Is Better
Core i7 820Q . 18.66 |=========================================================
Core i7 640M . 16.10 |=================================================


Smallpt 1.0
Global Illumination Renderer; 128 Samples
Seconds < Lower Is Better
Core i7 820Q . 87.56  |=============================================
Core i7 640M . 108.21 |========================================================


Sudokut 0.4
Total Time
Seconds < Lower Is Better
Core i7 820Q . 27.38 |=========================================================
Core i7 640M . 23.29 |================================================


Sysbench 1.0.20
Test: RAM / Memory
MiB/sec > Higher Is Better
Core i7 820Q . 11147.96 |======================================================
Core i7 640M . 11131.98 |======================================================


Sysbench 1.0.20
Test: CPU
Events Per Second > Higher Is Better
Core i7 820Q . 3306.57 |=======================================================
Core i7 640M . 2540.16 |==========================================


Timed Apache Compilation 2.4.41
Time To Compile
Seconds < Lower Is Better
Core i7 820Q . 84.73 |=================================================
Core i7 640M . 98.49 |=========================================================


Timed MPlayer Compilation 1.5
Time To Compile
Seconds < Lower Is Better
Core i7 820Q . 262.87 |=========================================
Core i7 640M . 358.75 |========================================================