Performa 200 
Physical Memory: A total of 10MB can be installed using 2 
additional 4MB SIMMs. Surprisingly, the Performa 200 
does not support 256K SIMMs. Up to 8MB of memory can 
be addressed in 24–bit mode on the Performa 200. The 
Performa 200 supports 32–bit addressing, though physical 
RAM is limited to 10MB.   8MB or 16MB SIMMs will only be 
recognized as 4MB SIMMs and are not recommended. So,
 memory configurations are 2, 4, 6, or 10MB.

Extended Memory: The 68030 CPU in the Performa 200 
has a built–in Memory Management Unit. Therefore, it can 
run RAM Doubler or virtual memory without requiring any 
additional hardware. In 24–bit mode, the Performa 200 can 
address up to 13MB of VM, and in 32–bit mode, it can 
address up to 1024MB. 

Performa 400, 405, 410 and 430 

Physical Memory: The SIMM bank may either be empty, or 
filled with two SIMMs, which must be of the same size. The 
machines do not support 256K or 512K SIMMs. 24-bit mode 
memory configurations of 4 or 6MB are possible. The ROMs 
support standard 32–bit addressing, but are specially 
configured to support a maximum of 10MB of RAM. To 
address large amounts of RAM, use System 7 standard 
32–bit addressing. The LC II can use standard 4MB SIMMs, 
but will not address more memory than 10MB.

Extended Memory: The 68030 CPU in the LC II has a 
built–in Memory Management Unit. Therefore, it can run 
RAM Doubler or virtual memory without additional hardware.
In 24–bit mode the LC II can use up to 14MB of Connectix 
Virtual, or 13MB of System 7 VM. In 32–bit mode the LC II can 
use up to 1024 MB of virtual memory (or the amount of available hard drive space.) When performance is critical, or hard drive space is limited, we recommend RAM Doubler.

Video RAM: Performa VRAM is installed on-board, with 1 additional VRAM SIMM slot.  Performa 400: 256K installed, 512K maximum. 405, 410: 512K maximum installed. 430: 512K installed; 768K maximum

Performa 450 

Physical Memory: The SIMM bank may either be empty, or 
filled with one SIMM. The 450 uses a 72-pin SIMM. 24-bit 
mode memory configurations of 4, 5, 6, or 8MB are possible. 
The SIMM slot also accepts a 8, 16, or 32MB SIMM, for a 
maximum of 36MB. To address large amounts of RAM, use 
System 7 standard 32–bit addressing.

Extended Memory: The 68030 CPU in the 450 has a built–in 
Memory Management Unit. Therefore, it can run RAM 
Doubler or virtual memory without additional hardware. In 
24–bit mode the 450 can use up to 14MB of Connectix 
Virtual, or 13MB of System 7 VM. In 32–bit mode they can 
use up to 1024 MB of virtual memory (or the amount of 
available hard drive space.) When performance is critical, 
or hard drive space is limited, we recommend RAM Doubler.

Video RAM: 512K soldered on. One expansion slot is available for a maximum of 768K video RAM. 

Performa 460, 466, 467 

Physical Memory: The SIMM bank may either be empty, or 
filled with one SIMM. The 460 uses a 72-pin SIMM. Low 
memory configurations of 4, 5, 6, or 8MB are possible.  The 
SIMM slot also accepts a 8, 16, or 32MB SIMM, for a 
maximum of 36 MB. To address large amounts of RAM, use 
System 7 standard 32–bit addressing.

Extended Memory: The 68030 CPU in these machines has 
a built–in Memory Management Unit. Therefore, they can 
run RAM Doubler or virtual memory without additional 
hardware. In 24–bit mode these machines can use up to 
14MB of Connectix Virtual, or 13MB of System 7 VM. In 
32–bit mode they can use up to 1024 MB of virtual memory 
(or the amount of available hard drive space.) When 
performance is critical, or hard drive space is limited, we recommend RAM Doubler.

Video RAM: 512K soldered on. One expansion slot is available for a maximum of 768K video RAM. 

Performa 475, 476 
Physical Memory: The bank may either be empty, or filled 
with one 72-pin SIMM. Standard memory configurations of 
4, 5, and 8 MB are possible.   The SIMM slot also accepts a 
8, 16, or 32MB SIMM, for a maximum of 36MB. To address 
large amounts of RAM, use System 7 standard 32–bit 
addressing.

Extended Memory: The 68040 CPU in the Performa 475 
and 476 has a built–in Memory Management Unit. 
Therefore, they can run RAM Doubler or virtual memory 
without requiring any additional hardware. In 24–bit mode,
these machines can address up to 13MB of VM, and in 
32–bit mode, it can address up to 1024MB. In situations 
where performance is critical, or hard drive space is limited, 
we recommend RAM Doubler. 

Video RAM: The Performa 475/476 has two VRAM banks of one slot each. In the standard configuration, one of the banks has 512K of 68–pin VRAM installed in it. The 475/476 only supports 80ns 512K VRAM SIMMs.

Performa 550, 560 
Physical Memory: The bank may either be empty, or filled 
with one 72-pin SIMM. Standard memory configurations of 
4, 5, 8, 12, 20, and 36MB are possible.   The SIMM slot also 
accepts a 8, 16, or 32MB SIMM, for a maximum of 36MB. To 
address large amounts of RAM, use System 7 standard 
32–bit addressing.

Extended Memory: The 68030 CPU in the Performa 550 
and 560 has a built–in Memory Management Unit. 
Therefore, they can run RAM Doubler or virtual memory 
without requiring any additional hardware. In 24–bit mode, 
these machines can address up to 13MB of VM, and in 
32–bit mode, it can address up to 1024MB. In situations 
where performance is critical, or hard drive space is limited, 
we recommend RAM Doubler. 

Video RAM: The Performa 550/560 has 512K of VRAM soldered on, and one VRAM slot, which can accept a 80ns 256K VRAM SIMM.

Performa 575, 577, 578 
Physical Memory: The bank may either be empty, or filled 
with one 72-pin SIMM. Standard memory configurations of 
4, 5, 8, 12, 20, and 36MB are possible.   The SIMM slot also 
accepts a 8, 16, or 32MB SIMM, for a maximum of 36MB. To 
address large amounts of RAM, use System 7 standard 
32–bit addressing.

Extended Memory: The 68040 CPU in the Performa 575 
has a built–in Memory Management Unit. Therefore, it can 
run RAM Doubler or virtual memory without requiring any 
additional hardware. In 24–bit mode, these machines can 
address up to 13MB of VM, and in 32–bit mode, it can 
address up to 1024MB. In situations where performance is 
critical, or hard drive space is limited, we recommend RAM 
Doubler. 

Video RAM: The Performa 575 has 2 VRAM SIMM slots, which can hold either 2-256K SIMMs, or 2-512K SIMMs, for a maximum of 1MB of VRAM.

Performa 600, 600 CD 

Physical Memory: The bank may either be empty, or filled 
with four SIMMs which must all be of the same size. 24-bit 
mode memory configurations of 4, 5, or 8MB are possible 
using no SIMMs, 256K, or 1MB SIMMs in the bank.  Up to 
68MB of physical RAM may be installed on a Performa 600 
(4MB soldered on to the motherboard plus four 16MB 
SIMMs). Other common configurations are 16MB (4MB built 
in plus four 2MB SIMMs) or 20MB (4MB built in plus four 
4MB SIMMs). They have 32–bit compatible ROMs, so no 
additional software is required to address more than 8MB in 
System 7. 

Extended Memory: The 68030 CPU in the Performa 600 
has a built–in Memory Management Unit. Therefore, they 
can run RAM Doubler or virtual memory without requiring 
any additional hardware. In 24–bit mode, the Performa 600 can address up to 13MB of VM, and in 32–bit mode, it can address up to 1024MB. In situations where performance is critical, or hard drive space is limited, we recommend RAM Doubler. 

Video RAM: The Performa 600 has two VRAM banks of one slot each. In the standard configuration, one of the banks has 512K of 68–pin VRAM installed in it. This is enough to support 16–bit color on the 12" RGB monitor, or 8–bit color on the 13" or 14" color monitor. This can be expanded up to 1MB by putting another 512K VRAM SIMM in the second bank. This configuration will support 16–bit color on the 13” or 14” color monitor. The 600 only supports 100ns 512K VRAM SIMMs. The Performa 600CD configuration ships with 1MB VRAM installed.

Performa 630, 630 CD, 635, 636, 636 CD 

Physical Memory: The bank may either be empty, or filled 
with one 72-pin SIMM. Standard memory configurations of 
4, 5, 8, 12, 20, and 36MB are possible.   The SIMM slot also 
accepts a 8, 16, or 32MB SIMM, for a maximum of 36MB. To 
address large amounts of RAM, use System 7 standard 
32–bit addressing.

Extended Memory: The 68040 CPU in the Performa 630 et.
al. has a built–in Memory Management Unit. Therefore, they 
can run RAM Doubler or virtual memory without requiring 
any additional hardware. In 24–bit mode,these machines 
can address up to 13MB of VM, and in 32–bit mode, it can 
address up to 1024MB. In situations where performance is 
critical, or hard drive space is limited, we recommend RAM Doubler. 

Video RAM: The Performa 630 has 1MB of 80ns DRAM soldered on, which can support 16-bit color on a 14" monitor.