<s>
nForce	B-Device
is	O
a	O
motherboard	B-Device
chipset	B-Device
created	O
by	O
Nvidia	O
originally	O
for	O
AMD	B-Architecture
Athlon	I-Architecture
and	O
Duron	O
,	O
with	O
later	O
revisions	O
also	O
supporting	O
contemporary	O
Intel	O
processors	O
.	O
</s>
<s>
The	O
chipset	B-Device
shipped	O
in	O
3	O
varieties	O
;	O
220	O
,	O
415	O
,	O
and	O
420	O
.	O
</s>
<s>
220	O
and	O
420	O
are	O
very	O
similar	O
with	O
each	O
having	O
the	O
integrated	O
GPU	B-Architecture
,	O
but	O
the	O
220	O
only	O
has	O
a	O
single	O
channel	O
of	O
memory	O
available	O
whereas	O
420	O
has	O
the	O
128-bit	O
TwinBank	O
design	O
.	O
</s>
<s>
The	O
nForce	B-Device
chipset	B-Device
introduced	O
a	O
dual-channel	O
memory	O
controller	O
to	O
the	O
mainstream	O
motherboard	B-Device
market	O
,	O
doubling	O
theoretical	O
throughput	O
,	O
and	O
offering	O
very	O
competitive	O
performance	O
most	O
especially	O
in	O
workstation	O
class	O
benchmarks	O
.	O
</s>
<s>
For	O
the	O
relatively	O
fast	O
integrated	O
graphics	B-Architecture
processor	I-Architecture
(	O
IGP	O
)	O
to	O
have	O
adequate	O
memory	O
bandwidth	O
it	O
needed	O
more	O
than	O
to	O
simply	O
share	O
a	O
single	O
memory	O
channel	O
with	O
the	O
Athlon	B-Architecture
XP	O
CPU	O
.	O
</s>
<s>
Many	O
considered	O
it	O
somewhat	O
an	O
advanced	O
Level	O
3	O
cache	B-General_Concept
device	O
.	O
</s>
<s>
Nvidia	O
debuted	O
their	O
advanced	O
NVAPU	O
audio	O
solution	O
,	O
branded	O
SoundStorm	O
,	O
on	O
the	O
nForce	B-Device
MCP-D	O
southbridge	O
chip	O
.	O
</s>
<s>
It	O
is	O
the	O
same	O
as	O
the	O
audio	O
processor	O
in	O
the	O
Xbox	B-Application
chipset	B-Device
and	O
supports	O
many	O
hardware-accelerated	O
2D/3D	O
audio	O
channels	O
and	O
advanced	O
HRTF	O
3D	O
audio	O
spatialization	O
provided	O
largely	O
by	O
Sensaura	O
.	O
</s>
<s>
The	O
original	O
nForce	B-Device
chipset	B-Device
was	O
let	O
down	O
by	O
patchy	O
driver	O
support	O
and	O
less	O
than	O
optimal	O
hardware	O
design	O
.	O
</s>
<s>
Performance	O
of	O
the	O
dual-channel	O
memory	O
controller	O
and	O
"	O
DASP	O
"	O
did	O
not	O
greatly	O
surpass	O
the	O
VIA	O
Technologies	O
KT266A	O
chipset	B-Device
that	O
was	O
usually	O
as	O
fast	O
and	O
cheaper	O
.	O
</s>
<s>
The	O
optimized	O
parallel	B-Protocol
ATA	I-Protocol
driver	O
support	O
was	O
introduced	O
and	O
then	O
withdrawn	O
after	O
hardware	O
incompatibilities	O
showed	O
up	O
,	O
and	O
the	O
much	O
heralded	O
SoundStorm	O
audio	O
was	O
seen	O
to	O
crackle	O
under	O
heavily	O
loaded	O
scenarios	O
.	O
</s>
<s>
In	O
fact	O
,	O
the	O
ATA	O
driver	O
would	O
remain	O
an	O
issue	O
at	O
least	O
into	O
the	O
life	O
of	O
nForce4	B-Device
where	O
it	O
was	O
still	O
known	O
to	O
cause	O
problems	O
with	O
some	O
hard	B-Device
drives	I-Device
and	O
optical	O
drives	O
.	O
</s>
