• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

Can't use both cores of my cpu


New Member
May 16, 2021
1 (0.03/day)
I have been trying to use both the cores on my A4-9120e and it doesn't work, does anyone know how do i use both cores?


Vanguard Beta Tester
Nov 26, 2004
7,013 (1.16/day)
Canuck in Norway
System Name Hellbox 4.0(same case new guts)
Processor Ryzen 5 5600X
Motherboard Gigabyte Aorus X570 Pro
Cooling TT Kandalf L.C.S.(Water/Air)EK Velocity CPU Block/Noctua
Memory 2x8GB Corsair Vengeance RGB Pro 3800CL18
Video Card(s) Sapphire 5700XT Nitro+
Storage 970 Evo Plus 500GB WD Caviar Black SATA 3 1TB x2 RAID1 2xSamsung 850 Evo 500GB RAID 0 1TB WD Blue
Display(s) Samsung CGH70 27” 1440 144hz Freesync 2 HDR
Case TT Kandalf L.C.S.
Audio Device(s) Soundblaster ZX/Logitech Z906 5.1
Power Supply Seasonic X-1050W 80+ Gold
Mouse G502 Proteus Spectrum
Keyboard G19s
Software Win 10 Pro x64
Just giving a CPU model and no other information on the rest of your hardware makes giving any type of advice/answer impossible. Go to your profile page and fill out your system specs at least if you expect to get any help.
  • Like
Reactions: 64K
Feb 20, 2020
1,931 (3.96/day)
System Name Ghetto Rigs x299 & z490 & Q9550 Old timer
Processor 9940x with optimus sigV2 & 10900k with optimus foundation & Q9550 with EK Evo
Motherboard X299 Rampage VI Apex & z490 Maximus XII Apex & Acer WG43M
Cooling D5 combo/280 GTX/ VRM water block copper/280 GTX/ D5 Top/Optimus sigV2/TitanXp/Mora 360x2
Memory Trident-Z 3600C16 4x8gb & Trident-Z 3600c16 2x8gb & 4x2gb crucial
Video Card(s) Titan Xp & 1080ti ftw3 & evga 980ti gaming
Storage 970 evo plus 500gb & 970 evo 500gb many 2.5" ssd's and WD BLK hdd's
Display(s) 1-AOC G2460PG 24"G-Sync 144Hz/ 2nd 1-ASUS VG248QE 24"/ 3rd LG 43" series
Case D450 second floor for 2nd rad x2/ Cherry Entertainment center/ 2 Test benches
Audio Device(s) Built in Realtek x2 with Insignia 2.0 sound bars & 1-LG sound bar
Power Supply evga 1200P2 & 1000P2 with APC AX1500 & 850P2 with CyberPower-GX1325U
Mouse Redragon Perdition x3
Keyboard G910 & G710+x2
Software Win-7 pro x3 and Linux Cinnamon 20.1x2 & win-10 pro x3
Performance power plan usually works but seeing it's only a dual core just opening a browser would kick both on :)
Oct 26, 2016
1,146 (0.67/day)
System Name KING-XEON
Processor Xeon 2697 V2(12c/24t) (OC-3,45Ghz-ALL*CORES----TURBO BOOSTING 4,03Ghz)
Motherboard Sabertooth X79
Cooling Xigmatek LOKI SD963 double-Fan
Memory 34Gb DDR3 Kingston Hyper Blue 1540Mhz Active clocks(9-9-9-30-160-2T)
Video Card(s) 1)R9 Fury Sapphire Nitro 4gbHBM/1080Mhz***2)MATROX P690
Storage 2 x ssd-Kingston 240Gb A400 in RAID 0+ HDD 500Gb +Samsung 128gb
Display(s) BenQ 28"EL2870U(4K-HDR)/ Acer 24"(1080P)/ 2x Eizo 19"
Case Lian Lee
Audio Device(s) Realtek/Creative T20 Speakers
Power Supply F S P Hyper S 700W
Mouse Asus TUF-GAMING M3
Keyboard Func FUNC-KB-460/Mechanical Keyboard
Software Win 10
Benchmark Scores Fire Strike=14610,Cinebench R15=1789,Cinebench R20=3756.Passmark=20073,Geekbench4=32885 multi
I have been trying to use both the cores on my A4-9120e and it doesn't work, does anyone know how do i use both cores?
How do you know that your CPU is not using both cores?Did you try to do certain benchmarks/test to compare your results against same CPU?
Jul 25, 2006
8,655 (1.59/day)
Nebraska, USA
System Name Brightworks Systems BWS-6 E-IV
Processor Intel Core i5-6600 @ 3.9GHz
Motherboard Gigabyte GA-Z170-HD3 Rev 1.0
Cooling Quality case, 2 x Fractal Design 140mm fans, stock CPU HSF
Memory 16GB (2 x 8GB) DDR4 3000 Corsair Vengeance
Video Card(s) EVGA GEForce GTX 1050Ti 4Gb GDDR5
Storage Samsung 850 Pro 256GB SSD, Samsung 860 Evo 500GB SSD
Display(s) Samsung S24E650BW LED x 2
Case Fractal Design Define R4
Power Supply EVGA Supernova 550W G2 Gold
Mouse Microsoft Wireless 5000
Keyboard Microsoft Wireless Comfort 5050
Software W10 Pro 64-bit
Unless you dinked with the defaults, your system will use all cores as they are needed - if supported by the program(s) you are running. Windows, the OS, supports multiple cores - when it needs to.

If you want to optimize use of your CPU, leave the default settings alone! Your OS, the motherboard, and the CPU itself know what they are doing.

Now if you are trying to improve the performance of your computer, I refer you back to INSTG8R's post #2.