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Stock voltage and overclocked voltage

post #1 of 3
Thread Starter 
Hi everyone, I've a Sapphire HD 7850 OC edition running in my pc.
When overclocking it, I brought the stock voltage 1.138v to 1.158v yesterday and subsequently had great success with core speed increase. When running idle, I noticed in Asus GPU Tweak monitor that the current voltage is 0.850v. That made sense to me as I thought 1.158v will be used when needed, much like the core clock or memory clock which runs at a reduced rate at idle.
But today when I turned it to 1.158 again, I noticed the GPU is always running at 1.158v even in idle condition. Then I moved it down to stock 1.138v and again noticed that its running at 1.138. Isn't it supposed be lower when idle?

How does your voltage work at idle? Does it come to a reduced quantity(like gpu clocks) or remains constant at what you've set with ur overclocking tools??
PC
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5-3570k ASRock Z77 Extreme4 Sapphire HD 7970 OC with boost G.SKILL TridentX 2400 Mhz - CL10 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 pro Western Digital Cavier Blue ASUS DVD-R/DVD-RW drive Cooler Master Hyper 212X 
OSMonitorKeyboardPower
Windows 7 Ultimate Edition 64-bit  Samsung S24F350FHW G.Skill RIPJAWS KM570 MX Cooler Master V550 – semi-modular 
CaseMouseAudioAudio
CM 690 III Logitech G102 Prodigy Realtek ALC 898 Sennheiser HD 558 
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PC
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5-3570k ASRock Z77 Extreme4 Sapphire HD 7970 OC with boost G.SKILL TridentX 2400 Mhz - CL10 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 pro Western Digital Cavier Blue ASUS DVD-R/DVD-RW drive Cooler Master Hyper 212X 
OSMonitorKeyboardPower
Windows 7 Ultimate Edition 64-bit  Samsung S24F350FHW G.Skill RIPJAWS KM570 MX Cooler Master V550 – semi-modular 
CaseMouseAudioAudio
CM 690 III Logitech G102 Prodigy Realtek ALC 898 Sennheiser HD 558 
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post #2 of 3
Quote:
Originally Posted by Driimit View Post

Hi everyone, I've a Sapphire HD 7850 OC edition running in my pc.
When overclocking it, I brought the stock voltage 1.138v to 1.158v yesterday and subsequently had great success with core speed increase. When running idle, I noticed in Asus GPU Tweak monitor that the current voltage is 0.850v. That made sense to me as I thought 1.158v will be used when needed, much like the core clock or memory clock which runs at a reduced rate at idle.
But today when I turned it to 1.158 again, I noticed the GPU is always running at 1.158v even in idle condition. Then I moved it down to stock 1.138v and again noticed that its running at 1.138. Isn't it supposed be lower when idle?
How does your voltage work at idle? Does it come to a reduced quantity(like gpu clocks) or remains constant at what you've set with ur overclocking tools??

Do you have any browsers or videos open that use GPU acceleration?
Peon
(16 items)
 
  
CPUMotherboardGraphicsGraphics
IvyBridge 3770K 3.5GHz - 4.2GHz Gigabyte UD5H-WB Wi-Fi AMD Sapphire Radeon 7970 1125/1575 w/Accelero X... AMD Sapphire Radeon 7970 Vapor-X 1125/1575 
RAMHard DriveHard DriveHard Drive
16GB DDR3 Corsair Vengeance LP 2TB Seagate Barracuda 600GB Western Digital Black 256GB Samsung 830 SSD (OS/Apps/Origin) 
Hard DriveCoolingOSKeyboard
256GB Samsung 830 SSD (Steam dedicated) Cooler Master Hyper 212+ Windows 8 x64 Pro Razer Black Widow 
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SeaSonic 1050W X Series Gold + HAF-X Razer Naga SteelSeries 4HD 
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Peon
(16 items)
 
  
CPUMotherboardGraphicsGraphics
IvyBridge 3770K 3.5GHz - 4.2GHz Gigabyte UD5H-WB Wi-Fi AMD Sapphire Radeon 7970 1125/1575 w/Accelero X... AMD Sapphire Radeon 7970 Vapor-X 1125/1575 
RAMHard DriveHard DriveHard Drive
16GB DDR3 Corsair Vengeance LP 2TB Seagate Barracuda 600GB Western Digital Black 256GB Samsung 830 SSD (OS/Apps/Origin) 
Hard DriveCoolingOSKeyboard
256GB Samsung 830 SSD (Steam dedicated) Cooler Master Hyper 212+ Windows 8 x64 Pro Razer Black Widow 
PowerCaseMouseMouse Pad
SeaSonic 1050W X Series Gold + HAF-X Razer Naga SteelSeries 4HD 
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post #3 of 3
Thread Starter 
No, I haven't. How do ur gpu react as I asked?
Edited by Driimit - 10/5/12 at 11:09am
PC
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5-3570k ASRock Z77 Extreme4 Sapphire HD 7970 OC with boost G.SKILL TridentX 2400 Mhz - CL10 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 pro Western Digital Cavier Blue ASUS DVD-R/DVD-RW drive Cooler Master Hyper 212X 
OSMonitorKeyboardPower
Windows 7 Ultimate Edition 64-bit  Samsung S24F350FHW G.Skill RIPJAWS KM570 MX Cooler Master V550 – semi-modular 
CaseMouseAudioAudio
CM 690 III Logitech G102 Prodigy Realtek ALC 898 Sennheiser HD 558 
  hide details  
Reply
PC
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5-3570k ASRock Z77 Extreme4 Sapphire HD 7970 OC with boost G.SKILL TridentX 2400 Mhz - CL10 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 pro Western Digital Cavier Blue ASUS DVD-R/DVD-RW drive Cooler Master Hyper 212X 
OSMonitorKeyboardPower
Windows 7 Ultimate Edition 64-bit  Samsung S24F350FHW G.Skill RIPJAWS KM570 MX Cooler Master V550 – semi-modular 
CaseMouseAudioAudio
CM 690 III Logitech G102 Prodigy Realtek ALC 898 Sennheiser HD 558 
  hide details  
Reply
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