Two considerations.
First, as an 8MHz 68000 machine, a Classic runs 32-bit code with all the verve of a boiled worm. A Classic limps in 7.5, which was the beginning of 68040-savvy system software, and a requirement for 7.5.3 must make you alert to a possible need for a PowerPC processor. What does the Cubase literature tell you about 'System Requirements'?
Second, you are not talking about an Update, but two (nearly three) stages of Upgrade. 7.1 and 7.5 were paid-for upgrades when they were released. Apple has kindly released 7.5 update 2 (or 7.5.3) as a standalone free download, effectively making it an upgrade, but to expect it to run elegantly, even if emulation is available, on a 24-bit machine with only 4MB of RAM is hopeful in the extreme. You will not be able to use virtual memory to make up for the lack of physical RAM in a Classic.
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First, as an 8MHz 68000 machine, a Classic runs 32-bit code with all the verve of a boiled worm. A Classic limps in 7.5, which was the beginning of 68040-savvy system software, and a requirement for 7.5.3 must make you alert to a possible need for a PowerPC processor. What does the Cubase literature tell you about 'System Requirements'?
Second, you are not talking about an Update, but two (nearly three) stages of Upgrade. 7.1 and 7.5 were paid-for upgrades when they were released. Apple has kindly released 7.5 update 2 (or 7.5.3) as a standalone free download, effectively making it an upgrade, but to expect it to run elegantly, even if emulation is available, on a 24-bit machine with only 4MB of RAM is hopeful in the extreme. You will not be able to use virtual memory to make up for the lack of physical RAM in a Classic.
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