the cine quinone of any gaming PC these days is the graphics card I mean there's
plenty of other cool components that you can throw in your rig but nothing quite
matches the experience of unboxing and
slotting in a new GPU to turn a
run-ofthe-mill computer into a gaming battle station but hold on a minute have
you ever wondered why we need a separate
GPU at all I mean instead of the whole PCI Express card Paradigm why haven't we
seen something like a dual CPU board where you can tell your computer to use
one CPU for CPU things and then the other CPU can be just for graphics I
mean are those big clunky cards really
necessary great question on the surface
CPUs and gpus appear to be very similar
they are both silicon based microprocessors mounted to a PCB with
heat sinks attached to them but when you look at their microarchitecture they
have some fundamental differences that make them suited for different roles
inside your PC think of it like this many people go around carrying Swiss
Army knives everywhere they go because they're very useful multi-purpose tools
they can cut things they can open wine bottles and even pick last night's
broccoli out of your teeth but suppose you're unlucky enough to need an
operation because you met with an unfortunate land party Act accident you
probably don't want the surgeon just flicking open a Swiss army knife and
going to town instead he or she will use a surgical knife or even a laser cutter
they can't do all the things a Swiss army knife can but they're specialized
devices that can do one thing very very
well similarly your computer's main CPU
is good at doing lots of different things quickly modern PCS are very
general purpose machines that can do you know spreadsheets or write horrible
fanfiction or illustrate aforementioned horrible fanfiction make Skype calls
listening to deeply embarrassing music play games edit audio video the list
goes on because of this your CPU needs to be able to handle lots of random and
diverse instructions efficiently so that
you can multitask without wanting to pull your hair out gpus however are
really only there for one Purpose with
an asterisk to render Graphics which
involves doing millions of very similar
calculations at the same time in parallel because of this gpus are
focused more on Raw throughput than a CPU which is designed to be much more
versatile and and balance all these different workloads like a waiter with
you know 18 plates stacked up on top of each other GPU architecture usually
features lots and lots of identical
compute units that deal with solving the similar mathematical functions that
determine how a bullets trajectory or waving bra Blades of grass or whatever
show up on your screen in fact the
highly parallelized nature of a GPU has
led to a growth in popularity of general
purpose Computing on graphics cards as well commonly known as
gpgpu certain applications aside from
games this is where the asterisk comes in can take advantage of higher end gpus
things like Bitcoin mining or Stanford universi folding at home project which
calculates the way that proteins fold for disease research both of these
require the type of heavy number crunching that gpus excel at but while
gpus are finding uses other than just gaming you probably won't want to try
and run your operating system on a graphics card as the differences between
your GPU and CPU are still very significant so don't expect the idea of
using a separate graphics card to go away anytime soon and after all there's
nothing quite like showing off your high-end card through the side panel
window to be the Envy of all your friends without having to hide it under
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