{"id":3017,"date":"2025-03-16T20:40:49","date_gmt":"2025-03-16T20:40:49","guid":{"rendered":"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/?p=3017"},"modified":"2026-02-05T21:14:00","modified_gmt":"2026-02-05T21:14:00","slug":"powerlogix-powerforce-g3-speed-settings","status":"publish","type":"post","link":"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/?p=3017","title":{"rendered":"G3 \/ G4 Processor Upgrade Speed Settings"},"content":{"rendered":"\n<p>Some G3 and G4 processor upgrades for beige macs from the 90s have dip switches for setting the processor and bus speed, as well as a special switch for when you install it in a PowerBase (a clone). With so much information falling off the internet and getting harder to find, I thought I&#8217;d post the settings for some cards here.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PowerLogix PowerForce G3 Speed Settings<\/h2>\n\n\n\n<p>This is what my PowerLogix card looks like, it is a 400MHz, 1MB Cache G3 (PFG3 400\/200\/1) upgrade for PCI macs with the processor slot, for example things like the 7500 to the 9600, and some clones.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"705\" src=\"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_203753-1024x705.jpg\" alt=\"\" class=\"wp-image-3015\" srcset=\"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_203753-1024x705.jpg 1024w, https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_203753-300x207.jpg 300w, https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_203753.jpg 1366w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Here are the settings :<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1016\" height=\"1024\" src=\"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_135736-1016x1024.jpg\" alt=\"\" class=\"wp-image-3012\" srcset=\"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_135736-1016x1024.jpg 1016w, https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_135736-298x300.jpg 298w, https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_135736-150x150.jpg 150w, https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_135736.jpg 1138w\" sizes=\"(max-width: 1016px) 100vw, 1016px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"955\" height=\"1024\" src=\"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_135626-955x1024.jpg\" alt=\"\" class=\"wp-image-3013\" srcset=\"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_135626-955x1024.jpg 955w, https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_135626-280x300.jpg 280w, https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_135626.jpg 1110w\" sizes=\"(max-width: 955px) 100vw, 955px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"967\" height=\"1024\" src=\"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_135557-967x1024.jpg\" alt=\"\" class=\"wp-image-3014\" srcset=\"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_135557-967x1024.jpg 967w, https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_135557-283x300.jpg 283w, https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250316_135557.jpg 1094w\" sizes=\"(max-width: 967px) 100vw, 967px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">XLR8 Mach Speed Settings<\/h2>\n\n\n\n<p>The following settings apply to a number of XLR8 cards, including Mach branded cards. The first 8 switches seem to control the host bus speed, the remainder set the CPU multiplier.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"738\" height=\"1024\" src=\"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2026\/02\/10000337235017302148205889971-738x1024.jpg\" alt=\"\" class=\"wp-image-3178\" srcset=\"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2026\/02\/10000337235017302148205889971-738x1024.jpg 738w, https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2026\/02\/10000337235017302148205889971-216x300.jpg 216w, https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2026\/02\/10000337235017302148205889971.jpg 1080w\" sizes=\"(max-width: 738px) 100vw, 738px\" \/><\/figure>\n\n\n\n<p>You can also additionally set the Backside Cache speed using XLR8s software.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Some G3 and G4 processor upgrades for beige macs from the 90s have dip switches for setting the processor and bus speed, as well as a special switch for when you install it in a PowerBase (a clone). With so much information falling off the internet and getting harder to find, I thought I&#8217;d post [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3016,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false},"categories":[13,431,460,283,12,284],"tags":[364,614,616,441,340,718,619,615,612,343,613,617,618,178,719],"jetpack_featured_media_url":"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/wp-content\/uploads\/2025\/03\/20250315_160623-scaled.jpg","jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p7g9vY-MF","_links":{"self":[{"href":"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/index.php?rest_route=\/wp\/v2\/posts\/3017"}],"collection":[{"href":"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3017"}],"version-history":[{"count":1,"href":"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/index.php?rest_route=\/wp\/v2\/posts\/3017\/revisions"}],"predecessor-version":[{"id":3179,"href":"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/index.php?rest_route=\/wp\/v2\/posts\/3017\/revisions\/3179"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/index.php?rest_route=\/wp\/v2\/media\/3016"}],"wp:attachment":[{"href":"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3017"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3017"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/elephantandchicken.co.uk\/stuffandnonsense\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3017"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}