Speed Doubler

Speed Doubler was a utility software package that was co-developed by Connectix and MindVision Software for Macintosh computers from Apple Computer. A Japanese version was released on floppy disk by Seiwa Systems.SPEED DOUBLER (日本語版), Suruga-Ya (Japanese). Accessed 2019-08-29.About MindVision Software, MindVision Software, Digital River. Accessed 2019-08-29.
==Features==
The Speed Doubler control panel includes 3 major features. The first two support Motorola 68030 and 68040 processors, but a PowerPC processor is recommended to full advantage of all the features:RAM Disk vs. Disk Cache: When to Use Each by Scott L. Barber, Low End Mac. 1999-10-06.
*Faster File Copying replaces the Macintosh Finder's copy functionality with a more efficient, multithreaded version that allowed simultaneous copies before a similar feature appeared on Mac OS 8.Supercharge Your System, MacWorld p.77. 1999-08.
*Faster Disk Performance replaces the Macintosh system software's Disk Cache routine with a version that is up to 40% faster for slower drives.CONNECTIX ANNOUNCES SPEED DOUBLER 2 FOR MACINTOSH, Macintosh Users Group of Regina Saskatchewan. 1996-12-09.
*Faster Emulation replaces the original Mac 68k emulator by Gary Davidian with a much faster dynamic recompiler for Power Macintosh computers. Because System 7.x still contained a lot of 68K code that needed to be emulated, Speed Doubler's dynamic recompiler can double the speed of a Power Macintosh 6100.SoftWindows grows up with improved speed and networking by Fred DeLisio, InfoWorld. 1995-11-06.
==Version history==
Speed Doubler was first released by Connectix at Macworld Expo Boston in August 1995 and supported System 7.0 to 7.5.x.Speed Doubler Quickens the Pace by Richard C.S. Kinne, TidBITS. 1995-08-28. Versions 2.0, 1.3.1, and earlier have known issues with Mac OS 7.6 and are disabled by Mac OS 7.6.1.System 7.6.1 Update Notes, MacFixer Vintage Software Library. 1997. Accessed 2019-08-29. Version 2.0.3 and earlier do not work with Mac OS 8, but 1.3.2 does.Mac OS Info - Speed Doubler 8 installed, The 6400 Zone. 1997-10-18. The last major release, Speed Doubler 8, was introduced in 1997 and works with Mac OS 7.5.5 to 8.0; various updates added support up to Mac OS 8.6.Best Classic Mac Software by Daniel Knight, Low End Mac. 2016-07-19. Updates are limited to features and compatibility; there is no noticeable improvement in emulation performance between versions. The effect of emulation was also decreased as Mac OS 8.6 had introduced a PowerPC-native nanokernel that had been rewritten by René A. Vega.Mac OS nanokernel by Protools5LEGuy, Mac OS 9 Lives. 2016-05-19.Macworld Expo Report #2 by Daniel Knight, Low End Mac. 2000-07-20.
Mac OS 9 or later is not supported,Ways To Make Your Mac Go Faster by cmteng, MacGurus. 2001-08-23. as Apple had by then improved disk caching and also implemented its own dynamic recompiler by Eric Traut.The RISC penalty by Zalman Stern, Google Groups. 1996-01-02.
The Faster File Copying component of Speed Doubler was spun off into a stand-alone utility called Copy Agent.Connectix RAM Doubler & Speed Doubler by yjchoi17, BetaArchive. 2015-04-17.
==References==
==External links==
*Speed Doubler 8 at Connectix (archived 2000-02-29)
*Speed Doubler 8 by Shawn FitzGerald at Mindjack (1998-09-07)
*Speed Doubler 8.0.1 by Oliver Dueck at the Mac Observer (1997-11-25)
*Connectix Releases Speed Doubler 8.1.1 by Geoff Duncan at TidBITS (1998-09-14)
*Performance Boost From Using Speed Doubler 8 at MacSpeedZone
*Speed Doubler at the Pippin @World & Atmark Wiki
Category:Connectix software
Category:Discontinued utilities
Category:Emulators
Category:1995 introductions