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Difference between revisions of "Glossary:Overclocking"

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== Overclocking ==
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Overclocking is an attempt to gain more performance from a component by causing it to run outside factory settings. This is most often performed on [[Central Processing Unit (CPU)|CPUs]] and [[Graphics Card]]s, but is sometimes performed on RAM as well.  
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Overclocking is a process involving making specific computer components run outside their factory spec to achieve higher speeds than intended.
  
 
'''Overclocking involves running a device outside its specifications, and can void warranties, shorten a devices useful life, or completely fry a device. Thus, only attempt an overclock if you know what you are doing'''
 
'''Overclocking involves running a device outside its specifications, and can void warranties, shorten a devices useful life, or completely fry a device. Thus, only attempt an overclock if you know what you are doing'''
  
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== Hardware Overclocking ==
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=== General pros and cons ===
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Hardware overclocking is using hardware settings to overclock a device. An example of this is setting BIOS settings so that the CPU runs at a higher multiplier. Using a hardware overclock can result in better performance gains than a software overclock, but there is a greater risk at frying a component due to an incorrect setting.
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==== Advantages ====
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*Can net a sizable increase in performance system wide, regardless of application
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*Can ease potential bottlenecks caused by the processor
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*Many PC enthusiasts and tinkerers find enjoyment out of overclocking
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*Good learning curb to understand how your computer works
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==== Disadvantages ====
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*The component will run hotter
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*The component will require more voltage and in turn, more electricity from the mains
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*The computer may become unstable if the overclocking process isn't done properly
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*Fans will have to run faster, causing more noise
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*After-market cooler will be required for more serious overclocks on processors. Most graphics cards come with adequate coolers
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*Overclocking reduces the life of the component, however not enough to be concerned with
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=== Common methods of overclocking ===
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==== "Permanent" overclocks ====
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These overclocks are configured inside a [http://en.wikipedia.org/wiki/BIOS BIOS] or a [http://en.wikipedia.org/wiki/Unified_Extensible_Firmware_Interface UEFI] and are set on a much lower level than your operating system, so the overclock will prevail after reformats, reinstalls and repairs. Overclocking using this method is a double edged sword, while being reported by some users to be more stable, it can be more difficult to fix if the overclock isn't safe. This method usually allows you to edit the [http://en.wikipedia.org/wiki/Front-side_bus front-side bus]/[http://en.wikipedia.org/wiki/HyperTransport HyperTransport link], allowing to have great control of your overclock, usually allowing you to increase in increments of 10-20+ megahertz. However, as you increase this, everything else in your system is sped up too, so you will have to counter that (unless you want that - not totally safe)
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==== Tool based overclocks ====
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This method varies quite a bit to the previously mentioned style of overclocking in that it's done inside an application inside an operating system while it's running. This has quite a nice benefit of being able to test and adjust the system easily but with a few downsides. The application used ''can'' influence the stability of the overclock and while it doesn't effect achieved speed (excluding situations where using the BIOS/UEFI allows higher clocks), the majority of users do prefer the previous method. On top of that, this technique means the overclock will only apply if the tool is running (some tools will allow you to only require it to run once per system start), meaning if you reboot, refort or reinstall, the overclock is lost until reapplied. This attribute, however, is useful for testing purposes, as any instabilities can be repaired simply by changing the configuration back or, if it crashes, simply rebooting.
  
  
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== Software Overclocking ==
 
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Software overclocking is using some form of software to enable an overclock for a device. And example of this is using EVGA Precision X to bump up the voltage for a graphics card. The benefit to software overclocking is that using one is less likely to fry your components, but the performance gains achieved are less than a hardware overclock.
 
  
 
[[Category:Guide]]
 
[[Category:Guide]]

Revision as of 05:43, 13 February 2013

Overclocking

Overclocking is a process involving making specific computer components run outside their factory spec to achieve higher speeds than intended.

Overclocking involves running a device outside its specifications, and can void warranties, shorten a devices useful life, or completely fry a device. Thus, only attempt an overclock if you know what you are doing

General pros and cons

Advantages

  • Can net a sizable increase in performance system wide, regardless of application
  • Can ease potential bottlenecks caused by the processor
  • Many PC enthusiasts and tinkerers find enjoyment out of overclocking
  • Good learning curb to understand how your computer works

Disadvantages

  • The component will run hotter
  • The component will require more voltage and in turn, more electricity from the mains
  • The computer may become unstable if the overclocking process isn't done properly
  • Fans will have to run faster, causing more noise
  • After-market cooler will be required for more serious overclocks on processors. Most graphics cards come with adequate coolers
  • Overclocking reduces the life of the component, however not enough to be concerned with

Common methods of overclocking

"Permanent" overclocks

These overclocks are configured inside a BIOS or a UEFI and are set on a much lower level than your operating system, so the overclock will prevail after reformats, reinstalls and repairs. Overclocking using this method is a double edged sword, while being reported by some users to be more stable, it can be more difficult to fix if the overclock isn't safe. This method usually allows you to edit the front-side bus/HyperTransport link, allowing to have great control of your overclock, usually allowing you to increase in increments of 10-20+ megahertz. However, as you increase this, everything else in your system is sped up too, so you will have to counter that (unless you want that - not totally safe)

Tool based overclocks

This method varies quite a bit to the previously mentioned style of overclocking in that it's done inside an application inside an operating system while it's running. This has quite a nice benefit of being able to test and adjust the system easily but with a few downsides. The application used can influence the stability of the overclock and while it doesn't effect achieved speed (excluding situations where using the BIOS/UEFI allows higher clocks), the majority of users do prefer the previous method. On top of that, this technique means the overclock will only apply if the tool is running (some tools will allow you to only require it to run once per system start), meaning if you reboot, refort or reinstall, the overclock is lost until reapplied. This attribute, however, is useful for testing purposes, as any instabilities can be repaired simply by changing the configuration back or, if it crashes, simply rebooting.