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Greg

Performance effect of sblive 'turbo' reg

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To help reduce the audible problems with the SB Live with HW acceleration on in OFP, I tried the following registry change:

Setting the DWORD value for Turbo to 0 under

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Creative Tech\Emu10kx\DriverSettings\Wave\Pin#00000002

I then benchmarked the computer using 'Ziff Davis Media Audio WinBench 99'.  The results were consistant and surprising.  With this registry change, the CPU usage went up from an average of perhaps 8% to 35%.  Having said that though, I didn't notice significant slowdown within games in general or in OFP.

I also benchmarked CPU utilization on a few other sound chips including CMedia and NForce2.  If Placebo or someone would like to give me a email address, I'll send some .GIFs (total 196k) of the benchmarks.

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I have also realized that EAX effects don't seem to work well with this setting. At first I thought they did. You can still get proper 5.1 directional sound etc. Anyway, I'll take it over crackling.

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