Clarification requested for the Card speed results thread

Discussion in 'PSP - Games & Content' started by Tikker, Jun 25, 2008.

  1. Tikker
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    Member Tikker GBAtemp Advanced Fan

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    Does anyone have a definitive list of which read/write speeds are actually important?

    I mean, who cares if a card has 44mbps write speed if all that's required is 5mbps

    I see people slagging other people's cards already, and I'm just wondering what the actual requirements for smooth gameplay are?

    I'm not going to spend an extra 20-50 bucks for better test speeds if the cheap knockoffs are fast enough [​IMG]

    or vice versa, if certain numbers are uber important, it would help justify spending the money on a good card
     
  2. Tortimer

    Newcomer Tortimer Advanced Member

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    I'd like to know this as well.
     
  3. jos7960

    Member jos7960 GBAtemp Regular

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    After all the things i've read about it i got the general idea that you can play any game on any card, but the faster your card is, the faster your loading times will be. Ill keep an eye on this thread for anyone who knows more about this.
     
  4. solange82200

    Member solange82200 GBAtemp Fan

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    I could be wrong, but if you have a slow card I've heard that some of your games could freeze, especially demanding ones like GOW. If someone knows for sure, please clarify
     
  5. raulpica

    Supervisor raulpica With your drill, thrust to the sky!

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    No, they won't freeze, they would just stutter when in .CSO (compressed) format. Still, you can resolve this by overclocking the PSP's CPU during gameplay.

    They will freeze only if you've got a REALLY crappy memstick. But if that's the case, over 90% of things (homebrew, games) won't work [​IMG]
     
  6. solange82200

    Member solange82200 GBAtemp Fan

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    If you have a good stick, could you set the PSP's CPU to something lower than 333mh, in order to save battery life? I have mine at 333, but sometimes I wonder if I even need it that fast...
     
  7. raulpica

    Supervisor raulpica With your drill, thrust to the sky!

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    Yes, I have mine at 222mhz all the time [​IMG]
    If you wonder if you really need it, try the same game with 222mhz, if it's the almost the same speed in-game, you can lower it to 222mhz.
     
  8. Shyn

    Member Shyn GBAtemp Regular

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    Its not so much the "demanding" games, as much as it is the ones that are constantly reading from the iso. I don't think you'll notice much of a difference between a 16MiB/sec read speed and a 13, but you'll start to notice once you hit like..10.
     
  9. Alastair

    Member Alastair GBAtemp Advanced Fan

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    I think I have a knock-off Pro Duo but only notice slow-downs in the GTA games as compressed .isos - they run flawlessly as .iso.
     
  10. IBNobody

    Member IBNobody I try to keep myself amused.

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    If you don't mind an occasional stutter, here's a nifty feature for you.

    CWCheat lets you set your bus speeds in-game. The default is '0', which means it uses whatever the bus was set to before it was loaded up. In most cases, this is 222Mhz.

    BUT!

    The author of CWCheat added in auto bus speed throttling.

    Set your CPU bus speed to '-1', and CWCheat will automatically throttle your CPU and FSB speeds based on the load that the CPU is under.

    If the CPU usage rises above 80%, CWCheat increases the CPU/FSP speed by a fixed amount. If CPU usage drops below 40% for a fixed time period, CWCheat lowers the CPU/FSP speed. Best of all, you can actually specify all these settings in the INI file.

    Using this, you won't drain your battery as fast when, for example, you are reading dialogs in an RPG.

    This is just another reason why you should use (and donate to) CWCheat.
     
  11. Tikker
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    Member Tikker GBAtemp Advanced Fan

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    do you know this for sure? or just speculating?

    it'd be nice to have some verifiable answers
     
  12. jelbo

    Member jelbo Ōkami!

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    Wow, that sounds almost too good to be true. Will try that out for sure. Thanks for the info!
     
  13. Tikker
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    Member Tikker GBAtemp Advanced Fan

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    The Performance Index is completely different to the previous version. At first the formula
    for calculating works now by weighting factors. So the most important test, which is obviously
    the 32kB blocksize reading test
    , has a higher weighting for the PI than for example the 512B
    blocksize writing. Also the Filesystem tests were removed, as they appear to be too heavily
    dependent on fragmentation and formatting. blackSPEED now only measures raw-speeds, which is
    absolutely fragmentation and formatting independent.
    Also some speed optimizations were introduced to max out the read/write-performance, especially
    on low blocksizes. This includes setting the CPU/BUS to 333/166, loop optimizations and higher
    priority-level of the app.
    To distinguish the new Performance Index from the old v1.0 one, the base score is now 100. This
    is the score that the original Sony 32MB stick has which came with your psp. So if your stick
    for example has an Performance Index of 236 this means that it has 236% the speed of the 32MB
    stick (meaning the test run 2.36 times faster than with the original 32 MB stick).




    bigger PI number is better, and the most important stat is the 32K read speeds
     
  14. Tortimer

    Newcomer Tortimer Advanced Member

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    Major thanks for that info Tikker.
     
  15. Tikker
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    Member Tikker GBAtemp Advanced Fan

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    it would still be nice to know absolute minimum scores for acceptable performance
     

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