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CPU Doubler

Your rating: None Average: 4 (3 votes)
Year released:
[www].se [ftp].se [mirror].us
cpu_doubler.sit (28.93 KB)
MD5: 6402f15e3b65866c92f7a16ecb5bf392
For System 7.0 - 7.6 - Mac OS 8 - 8.1
[www].se [ftp].se [mirror].us
cpu_doubler_1.0.sit (63.77 KB)
MD5: 99e5349e3edfd99d5234389a67eef388
For System 7.0 - 7.6 - Mac OS 8 - 8.1
[www].se [ftp].se [mirror].us
CPUCharger-1-0.hqx (31.27 KB)
MD5: a43358d40f2e9613f73d1cb12b1db8ce
For System 7.0 - 7.6 - Mac OS 8 - 8.1
This app works with: SheepShaver, Basilisk II, Mini vMac

This Control Panel allows you to have the frontmost application utilising more CPU time, therefore running faster. I also have the 1.0J version, which I believe is more recent. I will post it here if asked (and I can find it!).

CPU Doubler increases the computer's throughput via a proprietary scheduling algorithm. System 7 has a fairly simple scheduling algorithm which gives equal time to each process. There is no sophisticated load management scheduling that tries to optimize system performance by adjusting the amount of time each process gets. CPU Doubler adds this feature.

CPU Doubler also lets users customize performance to fit their needs. By setting individual process priorities, users can perform their own load balancing, finally giving users the ability of "job control" found in other multitasking operating systems such as UNIX and OS/2. There is even a history feature with which to set priorities of non-running applications so that future use will yield the desired result.

CPU Doubler also includes with it a free copy of Cron Manager, our chronological event management utility, which retails for $26.95.

Architecture: 68k PPC


3371-Alpha's picture
by 3371-Alpha - 2016, September 11 - 8:07am

According to RAM Charger's documentation, there was also a 1.0.3a version of this software that fixed compatibility issues. Anyone have that version?
[Edit:] I've uploaded a shareware version of cpu doubler called "cpu charger". I obtained it from here:

xy's picture
by xy - 2011, September 21 - 1:02pm

I have addded an archive which contains CPU Doubler as well as Cron Manager. I found this archive among my files; I never touched it. It might be an original archive made by the developer of CPU Doubler as Cron Manager was written by the same firm.

themacmeister's picture
by themacmeister - 2011, September 17 - 9:07am

Hi CB.

I thought for a moment that that 1.0J version may well be Japanese?! I'll check my CD catalogue and see if I can find it tonight. PS. It only really controls the multitasking niceness, so remained fairly useful up to OS X. Quality coding in practise!


cbone's picture
by cbone - 2011, September 17 - 5:31am

I like this utility and have used it in the past on most of my pre-OSX Macs. As far as I could tell, it runs fine up to OS 9, but looking at the age of the utility, it makes you wonder how safe its programming would be since it is a cpu-enhancing utility.

You mentioned you might have the latest rev. I tried purchasing the latest ver. a while ago but the order didn't go through -- do you still have you 1.0j version handy? I'd love a copy if you do..

I'd sure like to compare it with my 1.0! Have you tried both and if so, have you noticed any performance differences between versions (maybe the version change logs may say what changed)?