F
F
o
o
r
r
t
t
r
r
e
e
s
s
s
s
7
7
7
7
0
0
0
0
/
/
7
7
9
9
0
0
0
0
O
O
n
n
l
l
i
i
n
n
e
e
M
M
a
a
n
n
u
u
a
a
l
l
R
R
D
D
R
R
A
A
M
M
(
(
R
R
a
a
m
m
b
b
u
u
s
s
D
D
R
R
A
A
M
M
)
)
Rambus is a memory technology that uses large burst mode data transfer. Theoretically, the data transfer should be high than
SDRAM
.
RDRAM is cascaded in channel operation. For Intel 820, only one RDRAM channel is supported, 16-bit data per channel, and this
channel may have maximum 32 RDRAM devices, no matter how many
RIMM
sockets.
R
R
I
I
M
M
M
M
184-pin memory module that supports
RDRAM
memory technology. A RIMM memory module may contain up to maximum of 16
RDRAM devices.
S
S
D
D
R
R
A
A
M
M
(
(
S
S
y
y
n
n
c
c
h
h
r
r
o
o
n
n
o
o
u
u
s
s
D
D
R
R
A
A
M
M
)
)
SDRAM is one of the DRAM technologies that allows DRAM to use the same clock as the CPU host bus (
EDO
and FPM are
asynchronous and do not have clock signal). It is similar as
PBSRAM
to use burst mode transfer. SDRAM comes in 64-bit 168-pin
DIMM
and operates at 3.3V. AOpen is the first company to support dual-SDRAM DIMMs onboard (AP5V), from Q1 1996
S
S
I
I
M
M
M
M
(
(
S
S
i
i
n
n
g
g
l
l
e
e
I
I
n
n
L
L
i
i
n
n
e
e
M
M
e
e
m
m
o
o
r
r
y
y
M
M
o
o
d
d
u
u
l
l
e
e
)
)
SIMM socket is only 72-pin, and is only single side. The golden finger signals on each side of PCB are identical. That is why it was
called Single In Line. SIMM is made by FPM or
EDO
DRAM and supports 32-bit data. SIMM had been phased out on current
motherboard design.
153
Open
A
