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M
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3
4
M
X
3
4
P
O
S
T
(
P
o
w
e
P
O
S
T
(
P
o
w
e
The BIOS self test procedure after power-on, sometimes, it is the first or the second screen shown
on your monitor during system boot.
R
D
R
A
M
(
R
a
m
R
D
R
A
M
(
R
a
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
R
I
M
M
R
I
M
M
184-pin memory module that supports
contain up to maximum of 16 RDRAM devices.
S
D
R
A
M
(
S
y
n
S
D
R
A
M
(
S
y
n
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
to use burst mode transfer. SDRAM comes in 64-bit 168-pin
the first company to support dual-SDRAM DIMMs onboard (AP5V), from Q1 1996
r
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O
n
S
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f
T
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s
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)
r
-
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n
S
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l
f
T
e
s
t
)
b
u
s
D
R
A
M
)
b
u
s
D
R
A
M
)
RIMM
RDRAM
c
h
r
o
n
o
u
s
D
R
A
c
h
r
o
n
o
u
s
D
R
A
sockets.
memory technology. A RIMM memory module may
M
)
M
)
DIMM
87
O
n
l
i
n
e
M
a
O
n
l
i
n
e
M
a
PBSRAM
and operates at 3.3V. AOpen is
n
u
a
l
n
u
a
l
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