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Native speed that Psp games are clocked at?

VHBL (Vita Half Byte Loader) is an open source tool to load PSP homebrews on the Playstation Vita.
VHBL can be downloaded at http://wololo.net/vhbl
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rafael707
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Native speed that Psp games are clocked at?

Post by rafael707 » Wed Mar 21, 2012 1:16 am

Just like the title says, does the psp emulator on vita run at 333mhz?

the reason why i asked is because when i use snes emulator via VHBL, i changed the speed to 222mhz, the game runs fine, with brightness all the way down, and no sound, and i swear i get 5+ hours of gameplay playing chrono trigger xD

good for people to know xD
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msparky83
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Re: Native speed that Psp games are clocked at?

Post by msparky83 » Wed Mar 21, 2012 7:19 am

Im not sure about psp games exactly, but the snes9xTYL clocks at 300mhz default but can be overclocked to 333mhz if you wish. (just like other psp models) Yes underclocking does save a WHOLE lot of juice.
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m0skit0
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Re: Native speed that Psp games are clocked at?

Post by m0skit0 » Wed Mar 21, 2012 8:08 am

Each game can clock the CPU as it wishes starting from 3.whatever OFW. Native clock for the CPU is 333 MHz, but PSP usually runs at 222 MHz (to save battery).
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Quaeton
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Re: Native speed that Psp games are clocked at?

Post by Quaeton » Wed Mar 21, 2012 4:03 pm

This seems a little strange to me.

What processor are you actually overclocking? The Vita processor or a hardware virtualisation of the PSP one? Does this mean the Vita supports hardware virtualisation like Intel and AMD processors?

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m0skit0
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Re: Native speed that Psp games are clocked at?

Post by m0skit0 » Wed Mar 21, 2012 4:56 pm

Quaeton wrote:What processor are you actually overclocking? The Vita processor or a hardware virtualisation of the PSP one?
Depends on how the emulator was built, and anyway, does it really matter?
Quaeton wrote:Does this mean the Vita supports hardware virtualisation like Intel and AMD processors?
ARM9 does not support virtualization. And anyway, virtualization only works to virtualize the same processor type. So no way on virtualizing MIPS on ARM.
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msparky83
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Re: Native speed that Psp games are clocked at?

Post by msparky83 » Wed Mar 21, 2012 5:51 pm

m0skit0 wrote:Each game can clock the CPU as it wishes starting from 3.whatever OFW. Native clock for the CPU is 333 MHz, but PSP usually runs at 222 MHz (to save battery).
Ah, ok. Thank you for that clarification. I was wondering how it clocked things outside of homebrew.
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