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Core Active Down-clocking questions?

post #1 of 3
Thread Starter 
hey guys so i;ve already made a lot of threads and asked a lot of questions about overclocking my non 'k' i5 3570 so i wont really be asking about that much anymore ;p but this question is more because im interested in how it works. For reference my oc goal that i will probably not reach is 4.2 ghz. So everyone knows you can increase the core multiplier to to 42. With one, or maybe two i dont remember, cores running the cpu will run at 4.2 ghz but when all cores are active it 'downclocks' to 4.0 ghz. I actually had this cpu running at 4.2 for a little while by changing the bclk to 106, but thats in kind of a sketchy range so i just said screw it and changed it to stock. so my question is this, is the downclocking a physical thing hardwired into the cpu or can it be disabled in the bios somehow? or can i do anything to get it to run at 4.2 all cores enabled without changing the bclk at all, or at least not by much? Thanks!
 
Gateway Lappy
(8 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i5-3570@4.0ghz ASUS P8Z77-V LK  EVGA Geforce GTX 660ti2gb[bios mod]1202/1750 1.... Corsair Vengeance 8gb @ 21331.65v 
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DVD-Writer Windows 8.1 17.3" Active Matrix TFT Color LCD 6-cell Lithium Ion Battery 
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i7 3770K Quad-Core CPU Asus Sabertooth Z77 ATX Motherboard EVGA GeForce GTX 770 Dual Classified w/ ACX Cooler Corsair Vengeance 16 gig 1866mhz (Black) 
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EK-FC770 GPU Block Corsair SP120 Performance 120mm Fan Corsair AF140 Quiet-Series 140mm Fan Alphacool NexXxos UT60 Copper 360mm Radiator 
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Gateway Lappy
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CPUMotherboardGraphicsRAM
Intel Core i5-3570@4.0ghz ASUS P8Z77-V LK  EVGA Geforce GTX 660ti2gb[bios mod]1202/1750 1.... Corsair Vengeance 8gb @ 21331.65v 
Hard DriveHard DriveHard DriveCooling
Western Digital VelociRaptor150gb(boot drive) Seagate Momentus XT Hybrid 7200RPM 750GB(games/... Western Digital Caviar Black HDD 7200 RPM 1TB(r... Corsair H60 as intake at back in push configura... 
CoolingOSMonitorMonitor
x4 120mm Case Fans Windows 7 Professional Dell 24" LED HD (secondary screen) HP 2711x 27" HD (gaming screen) 
KeyboardPowerCaseMouse
SteelSeries 6GV2 Red Switch Edition Corsair HX Series HX750 750W INWIN Mana 137 w/ Modded Window  SteelSeries Sensei Raw Rubberized 
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Steelseries Qck Ultrasone Pro 550 S-Logic Asus Xonar DG Blue Snowflake USB Microphone 
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Logitech C615 1080p Webcam 
CPUGraphicsRAMHard Drive
AMD A6-5200 Quad-core AMD Radeon HD 8400 6gb DDR3L SDRAM 500GB HDD 
Optical DriveOSMonitorPower
DVD-Writer Windows 8.1 17.3" Active Matrix TFT Color LCD 6-cell Lithium Ion Battery 
CPUMotherboardGraphicsRAM
i7 3770K Quad-Core CPU Asus Sabertooth Z77 ATX Motherboard EVGA GeForce GTX 770 Dual Classified w/ ACX Cooler Corsair Vengeance 16 gig 1866mhz (Black) 
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XSPC Raystorm Acetal CPU Water Block EK-Multioption RES X2 - 150 Basic EK-CSQ Black Compression Fittings (x10) Primochill Elegant White Tubing (6meters) 
CoolingCoolingCoolingCooling
EK-FC770 GPU Block Corsair SP120 Performance 120mm Fan Corsair AF140 Quiet-Series 140mm Fan Alphacool NexXxos UT60 Copper 360mm Radiator 
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post #2 of 3
On your CPU, the maximum multiplier depends on how many cores are in the active state. AFAIK, this is hard wired into the hardware and there is no known software hack to get around this limitation.

All of the non-K and non-XM CPUs have a staggered maximum multiplier overclock limit based on how many cores are active. On most boards, increasing the BCLK beyond about 103 MHz is usually not a good idea for 24/7 use.
post #3 of 3
Thread Starter 
Quote:
Originally Posted by unclewebb View Post

On your CPU, the maximum multiplier depends on how many cores are in the active state. AFAIK, this is hard wired into the hardware and there is no known software hack to get around this limitation.

All of the non-K and non-XM CPUs have a staggered maximum multiplier overclock limit based on how many cores are active. On most boards, increasing the BCLK beyond about 103 MHz is usually not a good idea for 24/7 use.

ok thanks! thats what i was expecting. So do you think i can run a 103 bclk just fine no issues? That should get me to 4.1 ghz biggrin.gif Would that be worth it? I dont mean performance wise because obviously 4.0 to 4.1 is a negligible difference but i mean as will i notice 0 stability issues? My rig atm is totally stable overclocks. plus i would like to say my cpu is at 4.1 haha
 
Gateway Lappy
(8 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i5-3570@4.0ghz ASUS P8Z77-V LK  EVGA Geforce GTX 660ti2gb[bios mod]1202/1750 1.... Corsair Vengeance 8gb @ 21331.65v 
Hard DriveHard DriveHard DriveCooling
Western Digital VelociRaptor150gb(boot drive) Seagate Momentus XT Hybrid 7200RPM 750GB(games/... Western Digital Caviar Black HDD 7200 RPM 1TB(r... Corsair H60 as intake at back in push configura... 
CoolingOSMonitorMonitor
x4 120mm Case Fans Windows 7 Professional Dell 24" LED HD (secondary screen) HP 2711x 27" HD (gaming screen) 
KeyboardPowerCaseMouse
SteelSeries 6GV2 Red Switch Edition Corsair HX Series HX750 750W INWIN Mana 137 w/ Modded Window  SteelSeries Sensei Raw Rubberized 
Mouse PadAudioAudioOther
Steelseries Qck Ultrasone Pro 550 S-Logic Asus Xonar DG Blue Snowflake USB Microphone 
Other
Logitech C615 1080p Webcam 
CPUGraphicsRAMHard Drive
AMD A6-5200 Quad-core AMD Radeon HD 8400 6gb DDR3L SDRAM 500GB HDD 
Optical DriveOSMonitorPower
DVD-Writer Windows 8.1 17.3" Active Matrix TFT Color LCD 6-cell Lithium Ion Battery 
CPUMotherboardGraphicsRAM
i7 3770K Quad-Core CPU Asus Sabertooth Z77 ATX Motherboard EVGA GeForce GTX 770 Dual Classified w/ ACX Cooler Corsair Vengeance 16 gig 1866mhz (Black) 
Hard DriveHard DriveOptical DriveCooling
Samsung 840 Pro Series SSD 250GB SSD WD Caviar Black 2TB 7200RPM 64MB cache Asus DRW writer Corsair SP120 Performance Dual-Pack 120mm Fan 
CoolingCoolingCoolingCooling
XSPC Raystorm Acetal CPU Water Block EK-Multioption RES X2 - 150 Basic EK-CSQ Black Compression Fittings (x10) Primochill Elegant White Tubing (6meters) 
CoolingCoolingCoolingCooling
EK-FC770 GPU Block Corsair SP120 Performance 120mm Fan Corsair AF140 Quiet-Series 140mm Fan Alphacool NexXxos UT60 Copper 360mm Radiator 
CoolingPowerCaseOther
Swiftech MCP655-B Pump Corsair AX860i 860 Watt Modular PSU Corsair 760T Corsair Invidividually Sleeved 24-Pin (White) 
  hide details  
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Gateway Lappy
(8 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i5-3570@4.0ghz ASUS P8Z77-V LK  EVGA Geforce GTX 660ti2gb[bios mod]1202/1750 1.... Corsair Vengeance 8gb @ 21331.65v 
Hard DriveHard DriveHard DriveCooling
Western Digital VelociRaptor150gb(boot drive) Seagate Momentus XT Hybrid 7200RPM 750GB(games/... Western Digital Caviar Black HDD 7200 RPM 1TB(r... Corsair H60 as intake at back in push configura... 
CoolingOSMonitorMonitor
x4 120mm Case Fans Windows 7 Professional Dell 24" LED HD (secondary screen) HP 2711x 27" HD (gaming screen) 
KeyboardPowerCaseMouse
SteelSeries 6GV2 Red Switch Edition Corsair HX Series HX750 750W INWIN Mana 137 w/ Modded Window  SteelSeries Sensei Raw Rubberized 
Mouse PadAudioAudioOther
Steelseries Qck Ultrasone Pro 550 S-Logic Asus Xonar DG Blue Snowflake USB Microphone 
Other
Logitech C615 1080p Webcam 
CPUGraphicsRAMHard Drive
AMD A6-5200 Quad-core AMD Radeon HD 8400 6gb DDR3L SDRAM 500GB HDD 
Optical DriveOSMonitorPower
DVD-Writer Windows 8.1 17.3" Active Matrix TFT Color LCD 6-cell Lithium Ion Battery 
CPUMotherboardGraphicsRAM
i7 3770K Quad-Core CPU Asus Sabertooth Z77 ATX Motherboard EVGA GeForce GTX 770 Dual Classified w/ ACX Cooler Corsair Vengeance 16 gig 1866mhz (Black) 
Hard DriveHard DriveOptical DriveCooling
Samsung 840 Pro Series SSD 250GB SSD WD Caviar Black 2TB 7200RPM 64MB cache Asus DRW writer Corsair SP120 Performance Dual-Pack 120mm Fan 
CoolingCoolingCoolingCooling
XSPC Raystorm Acetal CPU Water Block EK-Multioption RES X2 - 150 Basic EK-CSQ Black Compression Fittings (x10) Primochill Elegant White Tubing (6meters) 
CoolingCoolingCoolingCooling
EK-FC770 GPU Block Corsair SP120 Performance 120mm Fan Corsair AF140 Quiet-Series 140mm Fan Alphacool NexXxos UT60 Copper 360mm Radiator 
CoolingPowerCaseOther
Swiftech MCP655-B Pump Corsair AX860i 860 Watt Modular PSU Corsair 760T Corsair Invidividually Sleeved 24-Pin (White) 
  hide details  
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