Overclock.net › Forums › Intel › Intel CPUs › Can different cores run at different clock speeds?
New Posts  All Forums:Forum Nav:

Can different cores run at different clock speeds?

post #1 of 7
Thread Starter 
Or is HWMonitor simply not refreshing properly?

The Ancient
(14 items)
 
  
Reply
The Ancient
(14 items)
 
  
Reply
post #2 of 7
Yes they can. Each core of an Intel CPU can have a different clock speed set in either bios or through speedstep
Streamer/Gamer
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-5820K Asus X99-A Sapphire R9-290 Crucial Ballistics Sport 16gb 2400mhz 
Hard DriveHard DriveCoolingOS
OCZ Agility 3 60gb Seagate 1TB Corsair H100  Windows 10 64-bit 
MonitorKeyboardPowerCase
3x 22" 1080 monitors Logitech G510 Corsair HX620 Nzxt Switch 810 
MouseMouse PadAudio
Logitech G402 Steel series QCK cloth Logitech G930 headset 
  hide details  
Reply
Streamer/Gamer
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-5820K Asus X99-A Sapphire R9-290 Crucial Ballistics Sport 16gb 2400mhz 
Hard DriveHard DriveCoolingOS
OCZ Agility 3 60gb Seagate 1TB Corsair H100  Windows 10 64-bit 
MonitorKeyboardPowerCase
3x 22" 1080 monitors Logitech G510 Corsair HX620 Nzxt Switch 810 
MouseMouse PadAudio
Logitech G402 Steel series QCK cloth Logitech G930 headset 
  hide details  
Reply
post #3 of 7
Looks like Intel turbo boost is doing its work.
Gaming Computer
(19 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Quad Q6600 Asustek P5Q-PRO Nvidia 9800 GTX+ Kingston DDR2 8gb 
Hard DriveOptical DriveCoolingOS
Western Digital 1 TB Pioneer Noctua NH-U9B Windows 7 Ultimate 64-bit 
MonitorKeyboardPowerCase
Dell Monitor Logitech G110 Antec 750W Thermaltake Aluminium Old Case 
MouseMouse PadAudio
Logitech G500 Gaming Mouse Generic Mousepad Soundblaster 5.1 VX 
  hide details  
Reply
Gaming Computer
(19 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Quad Q6600 Asustek P5Q-PRO Nvidia 9800 GTX+ Kingston DDR2 8gb 
Hard DriveOptical DriveCoolingOS
Western Digital 1 TB Pioneer Noctua NH-U9B Windows 7 Ultimate 64-bit 
MonitorKeyboardPowerCase
Dell Monitor Logitech G110 Antec 750W Thermaltake Aluminium Old Case 
MouseMouse PadAudio
Logitech G500 Gaming Mouse Generic Mousepad Soundblaster 5.1 VX 
  hide details  
Reply
post #4 of 7
Intel (and you through the BIOS) can assign different clock speeds for when 1 core is active, when 2 cores are active, etc. thumb.gif

NOTE: This does not mean that you can set a speed for core #1, core #2, etc.
post #5 of 7
No they cannot. A core is either active or idle. All cores that are active at the same time run at the same frequency.

What you are seeing is just an artifact of either timing or an averaging.

Four a 4 core processor, when you setup turbo multipliers in the BIOS for 1 2 3 or 4 cores, you are specifying what frequency 1 active core will run at if the other 3 are idle, and what frequency two active cores will run at if the other two are idles & etc. All the active cores run at the same multiplier.

Also, EIST will allow the frequency and voltage to vary depending on load. In this case, again, all cores that are active run at the same frequency.

.
Edited by GeneO - 1/31/16 at 7:03pm
post #6 of 7
Quote:
Originally Posted by GeneO View Post

No they cannot. A core is either active or idle. All cores that are active at the same time run at the same frequency.

What you are seeing is just an artifact of either timing or an averaging.

Four a 4 core processor, when you setup turbo multipliers in the BIOS for 1 2 3 or 4 cores, you are specifying what frequency 1 active core will run at if the other 3 are idle, and what frequency two active cores will run at if the other two are idles & etc. All the active cores run at the same multiplier.

Also, EIST will allow the frequency and voltage to vary depending on load. In this case, again, all cores that are active run at the same frequency.

.

What is going on in the screenshot is that 2 cores are inactive (and therefore registering as 1600), and the other 2 being active and running at 4301.
post #7 of 7
Yes, you are right. They must not be in the lowest possible EIST state due to power settings or I'd think they would be at 800 MHz with 8 being the lowest possible multiplier.
Edited by GeneO - 1/31/16 at 8:40pm
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › Can different cores run at different clock speeds?