IBM 704 - Manual (Page 149)

Installing Video Memory
Installing Video Memory
Your server system board comes with 512 KB of preinstalled video
memory. If you expand the memory buffer to 1 MB, your server
controller will support high resolution graphics and text modes with
132 columns. You can increase the memory buffer size to 1 MB by
installing a 40-pin, 256 KB by 16-bit, 70 ns, complementary metal
oxide semiconductor (CMOS) dynamic random-access memory
(DRAM) module with Fast Page Mode, such as Samsung
KM416C256AJ-7, Hitachi HM514260AJ7R, or equivalent.
Note: See the User's Reference for more details about the video
subsystem.
Before you begin:
Be sure you have:
Read “Electrical Safety” on page 75 and “Handling
Static-Sensitive Devices” on page 77 (or your safety booklet).
Removed the server cover (see “Preparing to Install Options”
on page 78).
Chapter 4. Installing Options 131