Reply 140 of 233, by Shponglefan
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- l33t
bloodem wrote on 2024-05-11, 16:09:Shponglefan wrote on 2024-05-11, 16:06:With just L1 & L2 cache disabled it performs like a mid-range 486. With either ACPI or ODCM throttling, it can hit 386 speeds and lower.
ACPI throttling is quite problematic on most chipsets except for VIA. It apparently works, but when you test enough games you will find that it can cause stuttering and other weird behavior.
Either way, this is very interesting and I'll definitely have to test it out myself. Thanks 😀
Do you have any examples of games that cause stuttering or other issues with ACPI or ODCM throttling?
The only case I've run into so far is Ultima VII. If ACPI or ODCM is applied, the music will slow during the screen shake / earthquake effect. However, the game still playable just with L1 & L2 cache disabling and lower multiplier setting, so ACPI / ODCM throttling is a bit moot in that instance.
Other games I've tested like Descent and Dark Forces don't appear to have issues with ODCM or ACPI throttling. Neither does Police Quest II based on what I've tested so far.
There are also a lot of possible throttling combinations. On my setup between three cache options (both on, both off, or L1 off), six multiplier settings (12x to 17x), ODCM (1 to 8 ) and ACPI (1 to 8 ), there are over 1000 possible combinations.
Since ODCM and ACPI seem to throttle at slightly different rates, I'm curious if there might be certain combinations of those in conjunction with multiplier settings that might be run reliably. But with over 1000 combinations to test, that's a lot of testing. 😅