Не става.
Виж по-подробно : ftp://ftp.atrend.com.tw/ftppub/Manuals/Motherboard/Socket_7/Atc-5200v1

Цитирам"
"2-3 SYSTEM MEMORY INSTALLATION

The ATC-5200 provides three 168-pin DIMM sockets for system memory expansion from 8MB to 768MB. These three DIMMs are arranged to two banks,
please refer to page A. Each bank provides 64-bit wide data path.

※ Samples of System Memory Combinations Options ※
. . . . . . . . .
128MBx1 128MBx1 - 256MB
128MBx1 - 128MBx1 256MB
- 128MBx1 128MBx1 256MB
256MBx1 256MBx1 - 512MB "

Yanko