I'm afraid it's hard to...but if you config it well (use GPU Pete D3D 1.39, No sound, and all special abilities set to off) maybe it works...Mine is 333 and I'm VERY desperate on my system and I never get to 50-60 fps playing games on ePSXe. Don't worry ePSXe supports VERY MINIMUM requirement computers...hehe
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"Hyolee is my dahling"