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How much of an improvement does overclocking over 4.3 GHZ give a 2600k?

post #1 of 5
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I am upgrading my Cooler Master Hyper 212 plus to a Noctua NH-D14 because my temperatures are too close to 72 degrees Celsius and it's not even summer yet. So right now I am running @ 4.3 GHZ with 1.248 volts according to CPU-Z when running prime 95. I am a little confused because I see my voltage around 1.3v at times when I first start up my computer for example. I am not sure why my voltage would not be at it's highest according to CPU-Z when prime 95 is running?

But my question is how much of a performance gain would be achieved from going over 4.3 GHZ? 4.3 GHZ seems very fast to me, but do other users see a real worthwhile gain from going higher? My main use is gaming, but I do occasional video and audio encoding, or online streaming of games.

I think with my new cooler I will be able to go higher then 4.3 GHZ pretty easily. But I am wondering if the gains are worth it. Or is 4.3 GHZ a great speed to stay at?
My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
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My computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-2600k ASUS P8Z68-V/GEN3 EVGA Geforce GTX 560 ti G.skill 2x4GB DDR3 1600 
Hard DriveOSMonitorPower
1x 500gb 7200 rpm 1x 250gb 7200 rpm Windows Ultimate 64 bit 23'' LG Flatron W2353V Corsair 650 Watt 80 plus certified 
Case
Cooler Master HAF 912 
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post #2 of 5
Just OC'd mine yesterday and saw a little decrease in boot time. But with regards to everything else, nothing significant or really noticeable.
I saw a decrease in time for encoding videos though, so that helped.

OC'd mine to 4.3
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
2600k @ 4.5 ASUS P8P67 Pro 980TI Classified 16GB x G.Skill 
Hard DriveOSMonitorKeyboard
8TB worth Windows 7 x64 Dell 3007WFP + BenQ 24" + Acer 22" Logitech G510 
PowerCaseMouse
Corsair 850W Antec 900 MX518 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
2600k @ 4.5 ASUS P8P67 Pro 980TI Classified 16GB x G.Skill 
Hard DriveOSMonitorKeyboard
8TB worth Windows 7 x64 Dell 3007WFP + BenQ 24" + Acer 22" Logitech G510 
PowerCaseMouse
Corsair 850W Antec 900 MX518 
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post #3 of 5
Games are GPU bound, with a single-GPU card you wouldn't even need to overclock the 2600K at all. If you're unsure, play a game like BF3 and monitor your CPU/GPU usage.
Encoding should benefit from higher clock speeds.
post #4 of 5
It depends on what it is that you do with your rig. If you encode or somthing like that yes, it will be helpfull, if you game its a waste of time.
Gizmoto
(18 items)
 
They beat me:(
(15 items)
 
Home Server V1.0
(17 items)
 
CPUMotherboardGraphicsRAM
AMD Phenom II x6 1040t @2.7Ghz ASRock 880GM-LE FX  AMD Radeon HD 4250 integrated graphics Micro Center(ADATA) 8Gb (2x4) 1333 
Hard DriveHard DriveHard DriveHard Drive
Western Digital Caviar Blue 640Gb Samsung SpinPoint F4 2Tb Seagate Barracuda 7200.9 ST3500641AS-RK 500Gb Seagate Barracuda 7200.9 ST3500641AS-RK 500Gb 
Optical DriveOptical DriveCoolingOS
ASUS 24X DVD Burner ASUS 24X DVD Burner Stock AMD Cooler Windows 7 Home Premium 64 bit 
OSOSPowerCase
Linux Mint (VM) Linux Ubuntu (VM) Inland ILG-500R2 500w PSU DiabloTek Evo Mid-tower Case 
Other
Inland IL internal card reader 
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Gizmoto
(18 items)
 
They beat me:(
(15 items)
 
Home Server V1.0
(17 items)
 
CPUMotherboardGraphicsRAM
AMD Phenom II x6 1040t @2.7Ghz ASRock 880GM-LE FX  AMD Radeon HD 4250 integrated graphics Micro Center(ADATA) 8Gb (2x4) 1333 
Hard DriveHard DriveHard DriveHard Drive
Western Digital Caviar Blue 640Gb Samsung SpinPoint F4 2Tb Seagate Barracuda 7200.9 ST3500641AS-RK 500Gb Seagate Barracuda 7200.9 ST3500641AS-RK 500Gb 
Optical DriveOptical DriveCoolingOS
ASUS 24X DVD Burner ASUS 24X DVD Burner Stock AMD Cooler Windows 7 Home Premium 64 bit 
OSOSPowerCase
Linux Mint (VM) Linux Ubuntu (VM) Inland ILG-500R2 500w PSU DiabloTek Evo Mid-tower Case 
Other
Inland IL internal card reader 
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post #5 of 5
It depends on what you are doing. You might be able to pump out a few extra FPS on games that rely heavily on the CPU (Civ, SC2, WoW, etc). For things like transcoding videos/music you will see a mostly linear improvement based on how much you want to overclock. I don't think overclocking more will give you any practical advantage. I would do it for fun to try and squeeze out a little more performance, but really I could run this thing stock and it would perform fine for almost everything I do.

As for the voltage, it always goes down under heavy loads. You can change that in bios so it goes down less (LLC/VDROOP) but the lowering voltage is an intended design that has to do with power delivery and keeping the processor in its rated TDP. You might need to tweak this feature for a really high OC.
    
CPUMotherboardGraphicsRAM
i7-2600k 4.5GHz @ 1.32V Asus P8P67 Pro EVGA GTX 580 Mushkin 2133 9-10-9-24 
Hard DriveHard DriveCoolingOS
Samsung 840  WD Black Silver Arrow Windows 7 
MonitorKeyboardPowerCase
Dell U2211H Rosewill RK-9000BR Seasonic X750 HAF X 
MouseAudio
Razer Lachesis Grado HF2 
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CPUMotherboardGraphicsRAM
i7-2600k 4.5GHz @ 1.32V Asus P8P67 Pro EVGA GTX 580 Mushkin 2133 9-10-9-24 
Hard DriveHard DriveCoolingOS
Samsung 840  WD Black Silver Arrow Windows 7 
MonitorKeyboardPowerCase
Dell U2211H Rosewill RK-9000BR Seasonic X750 HAF X 
MouseAudio
Razer Lachesis Grado HF2 
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