<s>
HYDRA	B-Device
Engine	I-Device
is	O
a	O
brand	O
name	O
for	O
a	O
multi-GPU	O
developed	O
by	O
Lucid	O
Logix	O
.	O
</s>
<s>
Similar	O
to	O
nVidia	O
's	O
SLI	B-Device
and	O
ATI	O
's	O
Crossfire-technologies	O
,	O
Hydra	O
allows	O
linking	O
several	O
video	B-Device
cards	I-Device
together	O
producing	O
a	O
single	O
output	O
and	O
higher	O
performance	O
.	O
</s>
<s>
Unlike	O
SLI	B-Device
and	O
CrossFire	O
however	O
,	O
Hydra	O
allows	O
video	B-Device
cards	I-Device
from	O
different	O
chip	O
manufactures	O
to	O
be	O
linked	O
together	O
.	O
</s>
<s>
two	O
video	B-Device
cards	I-Device
equals	O
twice	O
the	O
performance	O
.	O
</s>
<s>
The	O
technology	O
consists	O
of	O
both	O
hardware	O
on	O
the	O
motherboard	B-Device
and	O
device	B-Application
drivers	I-Application
.	O
</s>
<s>
Currently	O
there	O
are	O
two	O
chips	O
released	O
under	O
the	O
Hydra	B-Device
Engine	I-Device
brand	O
:	O
Hydra	B-Device
100	I-Device
and	O
Hydra	O
200	O
.	O
</s>
<s>
The	O
basic	O
concept	O
behind	O
the	O
hardware	O
is	O
to	O
intercept	O
Microsoft	B-Application
DirectX	I-Application
or	O
OpenGL	B-Application
sent	O
to	O
the	O
video	B-Device
cards	I-Device
from	O
the	O
CPU	O
and	O
split	O
these	O
up	O
to	O
divide	O
the	O
calculation	O
task	O
fairly	O
common	O
amongst	O
the	O
present	O
GPUs	B-Architecture
.	O
</s>
<s>
SweClockers.com,	O
when	O
testing	O
the	O
MSI	O
Big	O
Bang	O
Fusion	O
which	O
features	O
Hydra	O
200	O
,	O
gave	O
it	O
very	O
poor	O
ratings	O
citing	O
the	O
following	O
:	O
Poor	O
drivers	O
,	O
poor	O
game	O
support	O
,	O
small	O
if	O
any	O
performance	O
gain	O
over	O
a	O
single	O
video	B-Device
card	I-Device
,	O
graphical	O
artifacts	O
,	O
unstable	O
gameplay	O
and	O
a	O
high	O
price	O
tag	O
.	O
</s>
