Overclock.net › Forums › General Hardware › General Processor Discussions › cool CPU = < volts?
New Posts  All Forums:Forum Nav:

cool CPU = < volts? - Page 2

post #11 of 17
7/18/09 at 2:33pm
Thread Starter 
Sorry, I actually meant -
By keeping the CPU temp down, can we actually achieve stability with a lower voltage than if the CPU temp was higher? In other words, an OCed CPU with more voltage running through it usually means a shorter life span for that CPU than one with stock voltage running through it. However, if we kept the CPU cool, is it possible to achieve stability with a lower voltage?

I don't know if I am making sense ... it is 7 in the morning here and I have not slept! lol
Home PC
(13 items)
  		  
CPUGraphicsRAMMonitor
i7 920 2 x GTX275 in SLI 3 x 2 OCZ Platinum Samsung 2443BWPLUS 
PowerCase
Corsair HX1000W ATCS 840 
View all
  hide details  
Reply
Home PC
(13 items)
  		  
CPUGraphicsRAMMonitor
i7 920 2 x GTX275 in SLI 3 x 2 OCZ Platinum Samsung 2443BWPLUS 
PowerCase
Corsair HX1000W ATCS 840 
View all
  hide details  
Reply
post #12 of 17
7/18/09 at 2:34pm
  • Joined: Jun 2009
  • Location: Switzerland
  • Posts: 1,437
  • Rep: 62 (Unique: 53)
  • Folding Team Rank: 1,302
  •  
    Name Team Rank Points / May Work Units / May
    Rayce185 1,302 1,181,382 / 0 955 / 0
     
  • Select All Posts By This User
Quote:
Originally Posted by Afrodisiac View Post
I wonder if you read the OP?
I did, and I should've added that doing the opposite of OC'ing results in less power consumption and cooler temps. But I would've thought that is was a logical conclusion... undervolting, anyone?
Main Rig
(14 items)
  		  
CPUMotherboardGraphicsRAM
Q9650 @ 3.6GHz ASUS Maximus II Formula Gigabyte Geforce GTX 660 Ti OC OCZ Blade LV PC2-9600 
CoolingCoolingOSMonitor
CPU: Corsair H70 GPU: Corsair H70 ("The Mod") Windows 7 Professional 64-Bit Dell U2212HM (no AG coating) 
KeyboardPowerCaseMouse
Logitech G510 Corsair HX850W Lian Li PC-9FB Logitech G400 
Mouse PadAudio
SteelSeries QcK ASUS Xonar DGX 
View all
  hide details  
Reply
Main Rig
(14 items)
  		  
CPUMotherboardGraphicsRAM
Q9650 @ 3.6GHz ASUS Maximus II Formula Gigabyte Geforce GTX 660 Ti OC OCZ Blade LV PC2-9600 
CoolingCoolingOSMonitor
CPU: Corsair H70 GPU: Corsair H70 ("The Mod") Windows 7 Professional 64-Bit Dell U2212HM (no AG coating) 
KeyboardPowerCaseMouse
Logitech G510 Corsair HX850W Lian Li PC-9FB Logitech G400 
Mouse PadAudio
SteelSeries QcK ASUS Xonar DGX 
View all
  hide details  
Reply
post #13 of 17
7/18/09 at 2:40pm
Thread Starter 
Quote:
Originally Posted by Rayce185 View Post
I did, and I should've added that doing the opposite of OC'ing results in less power consumption and cooler temps. But I would've thought that is was a logical conclusion... undervolting, anyone?
I wasn't referring to 'under'clocking or undervolting.
I was referring to say a stock CPU has the following specs (and I am making this up to make it easier to explain) -

Temperature of CPU - 35c
Stock CPU - 2.6Ghz @ 1.25v stable
OC CPU - 3Ghz @ 1.3v stable (let us assume that this is the point where we needed to up the voltage)

Is it possible to lower the temp of CPU to say 30C and achieve this -
OC CPU - 4Ghz @ 1.25v stable


Ummm ... I hope that makes sense! I am not wanting to undervolt, I am wanting to see if by putting my machine in say a cool room, I can get higher clocks at the same stock voltages.
Home PC
(13 items)
  		  
CPUGraphicsRAMMonitor
i7 920 2 x GTX275 in SLI 3 x 2 OCZ Platinum Samsung 2443BWPLUS 
PowerCase
Corsair HX1000W ATCS 840 
View all
  hide details  
Reply
Home PC
(13 items)
  		  
CPUGraphicsRAMMonitor
i7 920 2 x GTX275 in SLI 3 x 2 OCZ Platinum Samsung 2443BWPLUS 
PowerCase
Corsair HX1000W ATCS 840 
View all
  hide details  
Reply
post #14 of 17
7/18/09 at 2:55pm
  • Joined: Jun 2009
  • Location: Switzerland
  • Posts: 1,437
  • Rep: 62 (Unique: 53)
  • Folding Team Rank: 1,302
  •  
    Name Team Rank Points / May Work Units / May
    Rayce185 1,302 1,181,382 / 0 955 / 0
     
  • Select All Posts By This User
Sorry, then I genuinely misunderstood you.

But I don't think that is possible. People with sub-temp cooling still need to up the voltage to achieve crazy clocks.
Main Rig
(14 items)
  		  
CPUMotherboardGraphicsRAM
Q9650 @ 3.6GHz ASUS Maximus II Formula Gigabyte Geforce GTX 660 Ti OC OCZ Blade LV PC2-9600 
CoolingCoolingOSMonitor
CPU: Corsair H70 GPU: Corsair H70 ("The Mod") Windows 7 Professional 64-Bit Dell U2212HM (no AG coating) 
KeyboardPowerCaseMouse
Logitech G510 Corsair HX850W Lian Li PC-9FB Logitech G400 
Mouse PadAudio
SteelSeries QcK ASUS Xonar DGX 
View all
  hide details  
Reply
Main Rig
(14 items)
  		  
CPUMotherboardGraphicsRAM
Q9650 @ 3.6GHz ASUS Maximus II Formula Gigabyte Geforce GTX 660 Ti OC OCZ Blade LV PC2-9600 
CoolingCoolingOSMonitor
CPU: Corsair H70 GPU: Corsair H70 ("The Mod") Windows 7 Professional 64-Bit Dell U2212HM (no AG coating) 
KeyboardPowerCaseMouse
Logitech G510 Corsair HX850W Lian Li PC-9FB Logitech G400 
Mouse PadAudio
SteelSeries QcK ASUS Xonar DGX 
View all
  hide details  
Reply
post #15 of 17
7/18/09 at 3:02pm
Thread Starter 
Quote:
Originally Posted by Rayce185 View Post
Sorry, then I genuinely misunderstood you.

But I don't think that is possible. People with sub-temp cooling still need to up the voltage to achieve crazy clocks.
I wonder though, if they could push further before they had to increase the stock voltage to stabilise it. Like not at crazy clocks, just at that point where the stock voltage had to be increased.
Oh well, I am sure even if they could, it would have been only a miniscule amount more before stock voltage had to be increased.

Sorry, it was just a brain fart moment ... and wanted to explore this idea for no reason whatsoever (unless it led somewhere, in which case, of course, I meant to go in that direction all along! lol )
Home PC
(13 items)
  		  
CPUGraphicsRAMMonitor
i7 920 2 x GTX275 in SLI 3 x 2 OCZ Platinum Samsung 2443BWPLUS 
PowerCase
Corsair HX1000W ATCS 840 
View all
  hide details  
Reply
Home PC
(13 items)
  		  
CPUGraphicsRAMMonitor
i7 920 2 x GTX275 in SLI 3 x 2 OCZ Platinum Samsung 2443BWPLUS 
PowerCase
Corsair HX1000W ATCS 840 
View all
  hide details  
Reply
post #16 of 17
7/19/09 at 1:48am
It's not a brainfart, it's a scientific fact that lower temps = better travel of electricity. Of course if you're doing LN2 benching you still need a crapload of voltages to hit 7GHz, but assuming it was possible for a chip to survive the temps it would get with 7GHz on air, you would be needing more voltage on air as opposed to the LN2.
Quo vadis
(13 items)
  		  
CPUMotherboardGraphicsRAM
X3 720 @ 3.7/1.55 790XT-UD4P XFX 4890 4GB 1333/8-7-8-22, 2.6GHz NB 
Hard DriveOSPowerCase
640GB AALS Win7 Pro VX550 CM690 
View all
  hide details  
Reply
Quo vadis
(13 items)
  		  
CPUMotherboardGraphicsRAM
X3 720 @ 3.7/1.55 790XT-UD4P XFX 4890 4GB 1333/8-7-8-22, 2.6GHz NB 
Hard DriveOSPowerCase
640GB AALS Win7 Pro VX550 CM690 
View all
  hide details  
Reply
post #17 of 17
7/23/09 at 6:34am
Yes, lower temperatures = less resistance, and less resistance leads to all sorts of things (less leakage, lower power consumption, less electromigration, and so on) that lead to better overclocking.

For any given clock speed, less volts will be needed at a lower temperature.

Quote:
Originally Posted by imadude10 View Post
My computer doesn't overheat. 49c Max while overclocking
Overheating is relative.

Most superconductors over heat at temperatures hundreds of degrees below zero.
Primary (SB-E)
(15 items)
 
Secondary (Gulftown)
(12 items)
 
Tertiary (Bulldozer)
(11 items)
 
CPUMotherboardGraphicsGraphics
3930K (C2) @ 4.3GHz, HT on, 1.308v GA-X79S-UP5 (F4v) Radeon 7950, 1053/1650, 1.163v GPU, 1.65v mem, ... Radeon 7950, 1080/1675, 1.081v GPU, 1.65v mem, ... 
RAMHard DriveHard DriveHard Drive
32GiB Samsung MV-3V4G3D/US @ 1600, 8-8-8-24-T2,... Kingston V+100 96GB 4x WD Scorpio Black 500GB RAID 10 3x Hitachi 7k1000.C 1TB RAID 0 
CoolingOSKeyboardPower
Noctua NH-D14 SE2011 + 2x NF-P14 + PK-1 (TIM) Windows Server 2008 R2 SP1 Enterprise Flico Majestouch Tenkeyless (MX Brown) Antec True Power New 750w 
CaseMouseAudio
Fractal Design Define R4 + 6 Cougar CF-V14HB CM Storm Spawn (firmware 61) Realtek ALC898 
View all
CPUMotherboardGraphicsGraphics
i7 970 3012B113 @ 4GHz, 1.264v, HT On Gigabyte GA-X58A-UD5 rev 2.0 Radeon 6870 1GB Radeon 5750 @ 918/300 (cryptography coprocessor) 
RAMHard DriveCoolingOS
6x4GiB Samsung MV-3V4G3 @ 1600, 8-8-8-24-T2, 1.4v 1TB Hitachi 7K1000.C, 2x250GB Seagate 7200.10s Prolimatech Genesis Windows Server 2008 R2 SP1 
MonitorMonitorPowerCase
ASUS 22" Acer 22" Enermax Modu82+ 625w Antec P182 
View all
CPUMotherboardGraphicsRAM
AMD FX-8150 @ 4.52GHz (210x21.5), 1.45v load GA-970A-UD3 rev 1.0 (F8a BIOS) Radeon 6950 @ 945/1425, 1.2v 4x8GiB G.Skill Ares @ 1680, 9-10-9-28-T2, 1.5v 
Hard DriveHard DriveCoolingOS
Samsung F3 1TB 2x Samsung F3 500GB RAID 0 Lapped TRUE + Panflo FBA12G12H1BX Windows 7 Professional x64 SP1 
MonitorPowerCase
Dell S2740L (27", 1920x1080, 7ms, IPS) Corsair TX650w Cooler Master HAF 932 
View all
  hide details  
Reply
Primary (SB-E)
(15 items)
 
Secondary (Gulftown)
(12 items)
 
Tertiary (Bulldozer)
(11 items)
 
CPUMotherboardGraphicsGraphics
3930K (C2) @ 4.3GHz, HT on, 1.308v GA-X79S-UP5 (F4v) Radeon 7950, 1053/1650, 1.163v GPU, 1.65v mem, ... Radeon 7950, 1080/1675, 1.081v GPU, 1.65v mem, ... 
RAMHard DriveHard DriveHard Drive
32GiB Samsung MV-3V4G3D/US @ 1600, 8-8-8-24-T2,... Kingston V+100 96GB 4x WD Scorpio Black 500GB RAID 10 3x Hitachi 7k1000.C 1TB RAID 0 
CoolingOSKeyboardPower
Noctua NH-D14 SE2011 + 2x NF-P14 + PK-1 (TIM) Windows Server 2008 R2 SP1 Enterprise Flico Majestouch Tenkeyless (MX Brown) Antec True Power New 750w 
CaseMouseAudio
Fractal Design Define R4 + 6 Cougar CF-V14HB CM Storm Spawn (firmware 61) Realtek ALC898 
View all
CPUMotherboardGraphicsGraphics
i7 970 3012B113 @ 4GHz, 1.264v, HT On Gigabyte GA-X58A-UD5 rev 2.0 Radeon 6870 1GB Radeon 5750 @ 918/300 (cryptography coprocessor) 
RAMHard DriveCoolingOS
6x4GiB Samsung MV-3V4G3 @ 1600, 8-8-8-24-T2, 1.4v 1TB Hitachi 7K1000.C, 2x250GB Seagate 7200.10s Prolimatech Genesis Windows Server 2008 R2 SP1 
MonitorMonitorPowerCase
ASUS 22" Acer 22" Enermax Modu82+ 625w Antec P182 
View all
CPUMotherboardGraphicsRAM
AMD FX-8150 @ 4.52GHz (210x21.5), 1.45v load GA-970A-UD3 rev 1.0 (F8a BIOS) Radeon 6950 @ 945/1425, 1.2v 4x8GiB G.Skill Ares @ 1680, 9-10-9-28-T2, 1.5v 
Hard DriveHard DriveCoolingOS
Samsung F3 1TB 2x Samsung F3 500GB RAID 0 Lapped TRUE + Panflo FBA12G12H1BX Windows 7 Professional x64 SP1 
MonitorPowerCase
Dell S2740L (27", 1920x1080, 7ms, IPS) Corsair TX650w Cooler Master HAF 932 
View all
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: General Processor Discussions
Overclock.net › Forums › General Hardware › General Processor Discussions › cool CPU = < volts?