<s>
The	O
Radeon	B-Device
R100	I-Device
is	O
the	O
first	O
generation	O
of	O
Radeon	B-Device
graphics	O
chips	O
from	O
ATI	O
Technologies	O
.	O
</s>
<s>
The	O
line	O
features	O
3D	O
acceleration	O
based	O
upon	O
Direct3D	B-Application
7.0	O
and	O
OpenGL	B-Application
1.3	I-Application
,	O
and	O
all	O
but	O
the	O
entry-level	O
versions	O
offloading	O
host	O
geometry	O
calculations	O
to	O
a	O
hardware	B-Algorithm
transform	I-Algorithm
and	I-Algorithm
lighting	I-Algorithm
(	O
T&L	B-Algorithm
)	O
engine	O
,	O
a	O
major	O
improvement	O
in	O
features	O
and	O
performance	O
compared	O
to	O
the	O
preceding	O
Rage	B-Device
design	O
.	O
</s>
<s>
The	O
first-generation	O
Radeon	B-Device
GPU	O
was	O
launched	O
in	O
2000	O
,	O
and	O
was	O
initially	O
code-named	O
Rage	B-Device
6	O
(	O
later	O
R100	O
)	O
,	O
as	O
the	O
successor	O
to	O
ATI	O
's	O
aging	O
Rage	B-Device
128	I-Device
Pro	I-Device
which	O
was	O
unable	O
to	O
compete	O
with	O
the	O
GeForce	B-Device
256	I-Device
.	O
</s>
<s>
The	O
card	O
also	O
had	O
been	O
described	O
as	O
Radeon	B-Device
256	I-Device
in	O
the	O
months	O
leading	O
up	O
to	O
its	O
launch	O
,	O
possibly	O
to	O
draw	O
comparisons	O
with	O
the	O
competing	O
Nvidia	O
card	O
,	O
although	O
the	O
moniker	O
was	O
dropped	O
with	O
the	O
launch	O
of	O
the	O
final	O
product	O
.	O
</s>
<s>
The	O
R100	O
was	O
built	O
on	O
a	O
180	B-Algorithm
nm	I-Algorithm
semiconductor	O
manufacturing	O
process	O
.	O
</s>
<s>
Like	O
the	O
GeForce	O
,	O
the	O
Radeon	B-Device
R100	I-Device
featured	O
a	O
hardware	B-Algorithm
transform	I-Algorithm
and	I-Algorithm
lighting	I-Algorithm
(	O
T&L	B-Algorithm
)	O
engine	O
to	O
perform	O
geometry	O
calculations	O
,	O
freeing	O
up	O
the	O
host	O
computer	O
's	O
CPU	O
.	O
</s>
<s>
As	O
for	O
Radeon	B-Device
's	O
competitors	O
,	O
the	O
GeForce	B-Device
256	I-Device
is	O
4×1	O
,	O
GeForce2	O
GTS	O
is	O
4×2	O
and	O
3dfx	O
Voodoo	B-General_Concept
5	I-General_Concept
5500	I-General_Concept
is	O
a	O
2×1+2×1	O
SLI	O
design	O
.	O
</s>
<s>
Radeon	B-Device
also	O
introduced	O
a	O
new	O
memory	O
bandwidth	O
optimization	O
and	O
overdraw	O
reduction	O
technology	O
called	O
HyperZ	B-Device
.	O
</s>
<s>
Consisting	O
of	O
3	O
different	O
functions	O
,	O
it	O
allows	O
the	O
Radeon	B-Device
to	O
perform	O
very	O
competitively	O
compared	O
to	O
competing	O
designs	O
with	O
higher	O
fillrates	O
and	O
bandwidth	O
on	O
paper	O
.	O
</s>
<s>
The	O
Radeon	B-Device
's	O
Ark	O
demo	O
presents	O
a	O
science-fiction	O
environment	O
with	O
heavy	O
use	O
of	O
features	O
such	O
as	O
multiple	O
texture	O
layers	O
for	O
image	O
effects	O
and	O
detail	O
.	O
</s>
<s>
In	O
terms	O
of	O
performance	O
,	O
Radeon	B-Device
scores	O
lower	O
than	O
the	O
GeForce2	O
in	O
most	O
benchmarks	O
,	O
even	O
with	O
HyperZ	B-Device
activated	O
.	O
</s>
<s>
The	O
performance	O
difference	O
was	O
especially	O
noticeable	O
in	O
16-bit	O
color	O
,	O
where	O
both	O
the	O
GeForce2	O
GTS	O
and	O
Voodoo	B-General_Concept
5	I-General_Concept
5500	I-General_Concept
were	O
far	O
ahead	O
.	O
</s>
<s>
However	O
,	O
the	O
Radeon	B-Device
could	O
close	O
the	O
gap	O
and	O
occasionally	O
outperform	O
its	O
fastest	O
competitor	O
,	O
the	O
GeForce2	O
GTS	O
,	O
in	O
32-bit	O
color	O
.	O
</s>
<s>
Aside	O
from	O
the	O
new	O
3D	O
hardware	O
,	O
Radeon	B-Device
also	O
introduced	O
per-pixel	O
video-deinterlacing	O
to	O
ATI	O
's	O
HDTV-capable	O
MPEG-2	B-Algorithm
engine	O
.	O
</s>
<s>
R100-based	O
GPUs	O
have	O
forward-looking	O
programmable	O
shading	O
capability	O
in	O
their	O
pipelines	O
;	O
however	O
,	O
the	O
chips	O
are	O
not	O
flexible	O
enough	O
to	O
support	O
the	O
Microsoft	B-Application
Direct3D	I-Application
specification	O
for	O
Pixel	O
Shader	O
1.1	O
.	O
</s>
<s>
The	O
first	O
versions	O
of	O
the	O
Radeon	B-Device
(	O
R100	O
)	O
were	O
the	O
Radeon	B-Device
DDR	O
,	O
available	O
in	O
Spring	O
2000	O
with	O
32MB	O
or	O
64MB	O
configurations	O
;	O
the	O
64MB	O
card	O
had	O
a	O
slightly	O
faster	O
clock	O
speed	O
and	O
added	O
VIVO	O
(	O
video-in	O
video-out	O
)	O
capability	O
.	O
</s>
<s>
The	O
R100	O
introduced	O
HyperZ	B-Device
,	O
an	O
early	O
culling	O
technology	O
(	O
maybe	O
inspired	O
by	O
the	O
Tile	O
Rendering	O
present	O
in	O
St	O
Microelectronics	O
PowerVR	B-Device
chips	O
)	O
that	O
became	O
the	O
way	O
to	O
go	O
in	O
graphic	O
evolution	O
and	O
generation	O
by	O
generation	O
rendering	O
optimization	O
,	O
and	O
can	O
be	O
considerend	O
the	O
first	O
non	O
tile	O
rendering-based	O
(	O
and	O
so	O
DX7	B-Application
compatible	O
)	O
card	O
to	O
use	O
a	O
Z-Buffer	O
optimization	O
.	O
</s>
<s>
These	O
cards	O
were	O
produced	O
until	O
mid-2001	O
,	O
when	O
they	O
were	O
essentially	O
replaced	O
by	O
the	O
Radeon	B-Device
7500	I-Device
(	O
RV200	O
)	O
.	O
</s>
<s>
A	O
slower	O
and	O
short-lived	O
Radeon	B-Device
SDR	O
(	O
with	O
32MB	O
SDRAM	O
memory	O
)	O
was	O
added	O
in	O
mid-2000	O
to	O
compete	O
with	O
the	O
GeForce2	O
MX	O
.	O
</s>
<s>
Also	O
in	O
2000	O
,	O
an	O
OEM-only	O
Radeon	B-Device
LE	O
32MB	O
DDR	O
arrived	O
.	O
</s>
<s>
Compared	O
to	O
the	O
regular	O
Radeon	B-Device
DDR	O
from	O
ATI	O
,	O
the	O
LE	O
is	O
produced	O
by	O
Athlon	O
Micro	O
from	O
Radeon	B-Device
GPUs	O
that	O
did	O
not	O
meet	O
spec	O
and	O
originally	O
intended	O
for	O
the	O
Asian	O
OEM	O
market	O
.	O
</s>
<s>
Despite	O
these	O
handicaps	O
,	O
the	O
Radeon	B-Device
LE	O
was	O
competitive	O
with	O
other	O
contemporaries	O
such	O
as	O
the	O
GeForce	O
2	O
MX	O
and	O
Radeon	B-Device
SDR	O
.	O
</s>
<s>
Unlike	O
its	O
rivals	O
,	O
however	O
,	O
the	O
LE	O
has	O
considerable	O
performance	O
potential	O
,	O
as	O
is	O
possible	O
to	O
enable	O
HyperZ	B-Device
through	O
a	O
system	O
registry	O
alteration	O
,	O
plus	O
there	O
is	O
considerable	O
overclocking	O
room	O
.	O
</s>
<s>
Later	O
drivers	O
do	O
not	O
differentiate	O
the	O
Radeon	B-Device
LE	O
from	O
other	O
Radeon	B-Device
R100	I-Device
cards	O
and	O
the	O
HyperZ	B-Device
hardware	O
is	O
enabled	O
by	O
default	O
,	O
though	O
there	O
may	O
be	O
visual	O
anomalies	O
on	O
cards	O
with	O
HyperZ	B-Device
hardware	O
that	O
is	O
defective	O
.	O
</s>
<s>
In	O
2001	O
,	O
a	O
short-lived	O
Radeon	B-Device
R100	I-Device
with	O
64	O
MB	O
SDR	O
was	O
released	O
as	O
the	O
Radeon	B-Device
7200	O
.	O
</s>
<s>
After	O
this	O
and	O
all	O
older	O
R100	O
Radeon	B-Device
cards	O
were	O
discontinued	O
,	O
the	O
R100	O
series	O
was	O
subsequently	O
known	O
as	O
the	O
Radeon	B-Device
7200	O
,	O
in	O
keeping	O
with	O
ATI	O
's	O
new	O
naming	O
scheme	O
.	O
</s>
<s>
A	O
budget	O
variant	O
of	O
the	O
R100	O
hardware	O
was	O
created	O
and	O
called	O
the	O
Radeon	B-Device
VE	O
,	O
later	O
known	O
as	O
the	O
Radeon	B-Device
7000	O
in	O
2001	O
when	O
ATI	O
re-branded	O
its	O
products	O
.	O
</s>
<s>
RV100	O
has	O
only	O
one	O
pixel-pipeline	O
,	O
no	O
hardware	B-Algorithm
T&L	I-Algorithm
,	O
a	O
64-bit	O
memory	O
bus	O
,	O
and	O
no	O
HyperZ	B-Device
.	O
</s>
<s>
But	O
it	O
did	O
add	O
HydraVision	O
dual-monitor	O
support	O
and	O
integrated	O
a	O
second	O
RAMDAC	B-Device
into	O
the	O
core	O
(	O
for	O
Hydravision	O
)	O
.	O
</s>
<s>
From	O
the	O
3D	O
performance	O
standpoint	O
,	O
the	O
Radeon	B-Device
VE	O
did	O
not	O
fare	O
well	O
against	O
the	O
GeForce2	O
MX	O
of	O
the	O
same	O
era	O
,	O
though	O
its	O
multi-display	O
support	O
was	O
clearly	O
superior	O
to	O
the	O
GeForce2	O
MX	O
,	O
however	O
.	O
</s>
<s>
RV100	O
was	O
the	O
basis	O
for	O
the	O
Mobility	B-Device
Radeon	I-Device
notebook	O
solution	O
.	O
</s>
<s>
The	O
Radeon	B-Device
7500	I-Device
(	O
RV200	O
)	O
is	O
basically	O
a	O
die-shrink	O
of	O
the	O
R100	O
in	O
a	O
new	O
150nm	O
manufacturing	O
process	O
.	O
</s>
<s>
It	O
was	O
ATI	O
's	O
first	O
Direct3D	B-Application
7-compliant	O
GPU	O
to	O
include	O
dual-monitor	O
support	O
(	O
Hydravision	O
)	O
.	O
</s>
<s>
The	O
Radeon	B-Device
7500	I-Device
launched	O
in	O
the	O
second	O
half	O
of	O
2001	O
alongside	O
the	O
Radeon	B-Device
8500	I-Device
(	O
R200	B-Device
)	O
.	O
</s>
<s>
It	O
used	O
an	O
accelerated	B-Architecture
graphics	I-Architecture
port	I-Architecture
(	O
AGP	O
)	O
4x	O
interface	O
.	O
</s>
<s>
Around	O
the	O
time	O
that	O
the	O
Radeon	B-Device
8500	I-Device
and	O
7500	O
were	O
announced	O
,	O
rival	O
Nvidia	O
released	O
its	O
GeForce	O
3	O
Ti500	O
and	O
Ti200	O
,	O
the	O
8500	O
and	O
Ti500	O
are	O
direct	O
competitors	O
but	O
the	O
7500	O
and	O
Ti200	O
are	O
not	O
.	O
</s>
<s>
The	O
desktop	O
Radeon	B-Device
7500	I-Device
board	O
frequently	O
came	O
clocked	O
at	O
290MHz	O
core	O
and	O
230MHz	O
RAM	O
.	O
</s>
