Editing Macintosh Performa 6400 (section)

== Memory and Storage ==

=== RAM Configuration ===

The Performa 6400 includes 8 MB of RAM soldered to the motherboard, with two 168-pin DIMM slots supporting 70 ns memory modules. Maximum RAM capacity is 136 MB.

{| class="wikitable" style="width:70%"
|-
! Specification !! Details
|-
| RAM Type || 168-pin DIMM
|-
| RAM Speed || 70 ns
|-
| Standard RAM || 16 MB (32 MB on Video Editing Edition)
|-
| Maximum RAM || 136 MB
|-
| Motherboard RAM || 8 MB
|-
| RAM Slots || 2
|}

=== ROM and System Software ===

The Performa 6400 uses a 4 MB Macintosh ROM. It shipped with System 7.5.3 Revision 2.1, a release specific to these machines due to stability issues with the standard System 7.5.3 Release 2 on the new hardware, especially regarding the video card and LocalTalk file transfers.

Supported operating systems range from System 7.5.3 to Mac OS 9.1. With a PowerPC G3 processor upgrade, Mac OS 9.2.2 can be used.

=== Storage Systems ===

{| class="wikitable" style="width:70%"
|-
! Component !! Specification
|-
| Hard Drive Interface || IDE
|-
| Standard Hard Drive || 1.6 GB (180 MHz) or 2.4 GB (200 MHz)
|-
| Optical Drive || 8X CD-ROM
|-
| Floppy Drive || 1.44 MB 3.5" (manual inject)
|}