For video editors, the Mac Pro Silver Tower is one of the best computers ever built. Certainly they are more expandable, repairable and upgradeable than any other Mac built since, with SATA SSD and PCI cards and graphic card upgrades readily available and easily installed. Even the eight core 2.26 GHz version is incredibly powerful and fast, outrunning any MacBook Pro and most iMacs, as will a hexacore 3.33 GHz or 3.46 GHz. G4 performance drops following Mac OS 9.x system software update.The Mac Silver Tower 4,1 and 5,1 remain one of the most powerful Macs ever made, depending on your processor. Solution 2: Replace the video card with one that has current software/firmware or with an older video card compatible with these systems such as the ATI Radeon Mac edition and the ATI Radeon 7000 Mac edition. Solution 1: If your system is running Mac OS 9.x, turn off the video card's extensions in the Extensions Manager Control Panel. The lack of updated firmware and software, when combined with the G4 chips used on these high-speed upgrades, result in this instability. These cards are anywhere from 4-6 years old and have not had software or firmware updates in several years. Some Mac clones andPower Macintosh computers do not have onboard video, but instead use a separate video card (ATI XClaim 3D, ATI Mach 64, IX Micro Twin Turbo, or IX Micro Ultimate Rez) installed in a PCI slot. If you are running a supported version of Mac OS X, and have installed the latest Sonnet X Tune-Up software, you will see that Apple System Profiler reports the processor type and speed correctly.Īfter following the instructions and installing both the Crescendo/PCI G4 700 or 800 MHz upgrade card and its included software into my computer, the video is distorted and my cursor is a rectangular block that cannot move more than halfway down the screen. Metronome will give complete and accurate specs of the processor that is installed in your machine. This utility can be found under the Apple menu after installation. But, Apple System Profiler does not recognize this advancement.įor OS\u8217 s prior to Mac OS X, the Sonnet software installs a utility called Metronome. The chips on these upgrades have a maximum multiplier of 16x. The ASP calculates the 450 MHz speed using multipliers and the logic board bus speeds known at the time it was created. In addition, Apple System Profiler (ASP) has never been very good at reading non-Apple engineered processors in OS\u8217 s prior to Mac OS X. The G4 chips used to achieve the speeds of these processors were created long after Apple created the ROM\u8217 s that are used in those vintage machines. Hang or crash occurs before desktop appears.Īfter installing my new Crescendo/PCI processor upgrade in a Power Tower Pro, I can hear the boot chime when I turn the computer on, but the video display never comes up.Īfter installing a Crescendo/ PCI G4 700 or 800 MHz upgrade, I opened Apple System Profiler and it is reporting the processor type as unknown and the speed as 450 MHz. The computer's standard startup process takes noticeably longer after upgrading to any Mac OS 9.x system from Mac OS 8.6 or earlier. Otherwise, go to step 2.Ģ) Restart the computer under Mac OS 9 with extensions off (hold down the Shift key when you turn on the computer until the message "Extensions Off" appears).ģ) Launch the Crescendo/Encore Installer from the desktop and follow the instructions. Under certain conditions, the Crescendo/Encore Installer application encounters conflicts that cause it to hang, or even crash the computer when the computer is booted in Mac OS 9 with extensions on.ġ) If you have attempted to run the application directly from the Sonnet Installer CD, copy the Crescendo/Enc Ins file from the CD to the desktop (single-click and drag the file from the Mac OS 7-9 ONLY, not CLASSIC folder on to the desktop). The Crescendo/Encore installer hangs, or crashes the system occurs most often when run from the Sonnet installer CD while using Mac OS 9. The speed indicated on the G3 or G4 chip on my Sonnet processor upgrade doesn't seem to match the speed of the upgrade I purchased. Sonnet recommends that you keep the original processor card even after installing our upgrade cards in case you ever need them. May I discard my original CPU after installing Sonnet's upgrade cards? Why can't I run Mac OS 9.2 on my computer upgraded with a Crescendo/PCI G4 800 (or 700)? What are the known incompatibilities with the Crescendo/PCI G4 700 and 800? The Crescendo/Encore installer hangs, or crashes the system occurs most often when run from the Sonnet installer CD.
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