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→Xbox
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|[[Super Nintendo emulators|SNES]] (Main CPU)
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|40-60 Mhz,
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|[[Sega Genesis emulators|Sega Genesis]]
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|13.1-25.4 MHz<ref name="kyorune"/>
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|[[Sega Dreamcast emulators|Sega Dreamcast]] (SH4 CPU)
|200 MHz
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|220MHZ-240MHz
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|[[PlayStation emulators|PlayStation]]
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|[[Nintendo 64 emulators|Nintendo 64]]
On real hardware, overclocking is possible using [http://djky2k3.tripod.com/psx_oc.html this modification].
On emulators, [[Duckstation]] allows you to overclock the CPU up to 1000% or 10x and also supports CD speed up and seek speed up. [https://github.com/SonofUgly/PCSX-Reloaded/releases this This modified build] of [[PCSX-Reloaded|PCSX-R]] as well as [http://ngemu.com/threads/pcsxr-pgxp.186369/ this fork] allow for overclocking, though most games will break past 1.5x clock speed. Recent builds of Beetle PSX (the libretro fork of Mednafen's PS1 core) also support overclocking, by way of removing timing penalties instead of increasing clock speed. EPSXe also natively supports overclocking up to 4x. Hydro Thunder benefits a lot from it, running at a constant 30 FPS without any other issues.
==PS2==
BlastEm and HazeMD also allow for overclocking but neither are really recommended for normal usage.
==Sega Dreamcast==
Its SH-4 CPU can be overclocked from [https://www.retrorgb.com/easier-dreamcast-overclock-mod.html 200] to either 220 MHz (which is safer) or [https://www.racketboy.com/retro/overclock-your-dreamcast 240 MHz] (which isn't recommended). Some games which may struggle the original console in heavier scenes (like Soldier of Fortune) or don't run at full speed (like Sega Rally which runs at 55 vblanks/sec instead of 60) will work smoother. [[Flycast]] supports overclocking, and Sega Rally runs at full 60 vblanks/sec in [[Redream]].
==3DO==
[[Phoenix (emulator)|Phoenix]] and standalone Windows version of [[4DO]] allows up to 4.0/400% of the original 3DO clock speed, making some low frame rate titles such as [[wikipedia:Doctor_Hauzer|Doctor Hauzer]] and [[wikipedia:Killing_Time_(video_game)|Killing Time]] more playable. Also possible to overclock CPU in [[libretro]] version of [[4DOOpera]]<ref>https://docs.libretro.com/library/4doopera/#core-options</ref>, a [[libretro]] fork of 4DO,<br> in options in core's quick menu after game launch, but only to 2.0x speed, that still may seem slow.
The possibility of this function to break games (like incorrect physic and unplayable speed) is unknown.
==Nintendo DS==
In DSi and 3DS systems, it is possible to run classic DS games at higher clocks by the use of [[nds-bootstrap]]. This hypervisor has the option of running classic DS games in DSi mode, effectively overclocking the CPU from 67MHz to 133MHz. This change can remove slowdowns and improve framerate in some games, but can add instability in several others.
==Xbox==
On real hardware some people changing xbox cpu with tualatin pentium III and upgrading RAM to 128mb (just like [[Development Kits]]) for [https://youtu.be/c66hfqw4SKc?t=456 low frame rate games like Half-Life 2].
For emulators it's possible to use 128MB RAM and also overclock emulated CPU thanks to this [https://github.com/xemu-project/xemu/pull/1467 pull request] for xemu.
==References==
