Before you buy the latest graphics card with the most features in the market, make sure your computer system can support it. BRUNO DIETER CHAN shows you what you need.
THERE
hasn´t been much excitement with graphics cards until recently -- gamers now
can play games with decent frame rates. (Games usually draw 60 frames per
second, or fps. The minimum is 30fps; anything above 80fps will affect
gameplay.)
But the actual hindrance to
your gaming pleasure is not your graphics card, random access memory or CPU. It´s
your monitor.
A monitor´s maximum resolution
and refresh rate should determine the type of graphics card you should get.
Benchmarks by reviewers are a good indication.
If your monitor resolution is
1,680 by 1,050 and the card you are looking at plays your favourite game at
120fps on the same system specifications, don´t expect to see 120fps on your
screen. If your monitor has only 60 hertz, it will use 60fps of that 120fps, as
1Hz is considered as 1fps. This can cause screen tearing when you move a lot in
the game along with dropped frames.
Another point to remember is
that the newest generation of graphics cards still use about 100 watts of power
during gaming sessions. So check your total system requirement to see if you
need to buy a new power system unit (PSU) to
support your new card.
You can use the PSU
calculator from Thermaltake for
an idea of what you may need.
Next, you need to make sure
that your motherboard supports the format of your graphics card. There are
three main formats for graphics: peripheral component interconnect (PCI),
accelerated graphics port (AGP) and PCI-Express (PCI-E).
The oldest, PCI is still being
used for closed-circuit TV recording and other video recording activities while
AGP has been replaced by PCI-E. PCI slots are generally white in colour, AGP
brown, and PCI-E less colour-restricted.
There are six main output
ports for graphics cards. Digital video interface (DVI)
and video graphics array (VGA) are the main outputs for PCs while DisplayPort
and high-definition multimedia interface (HDMI) are the replacements for
S-video and composite video for TVs.
Of the six ports, DisplayPort
and HDMI are the only ones that carry both audio and video out of the card,
with DisplayPort slowly replacing HDMI.
Features are another big issue
with gamers, but the one you should take note of is DirectX 11 compatibility
for the newly released Windows 7.
With the growing popularity of
Windows 7 and the efficiency of DirectX 11 over DirectX 10.1, there are many
instruction sets to make games more realistic. You should not settle for
anything less than DirectX 11 as most games this year will either be released
under it or have patches to use it.
Like all PC devices, graphics
cards tend to fail in three years. The main cause is usually heat. Fans slow
down as oil evaporates or leaks from momentum and heat. Heatsinks get coated in
dust and oil from no maintenance, and thermal paste turns into thermal dust.
Heat power surges are also
another cause for alarm. If your graphics card is powered directly from the PSU, it
will affect the graphics card with the motherboard.
Although we can´t do much
against power surges, expect better regulators to be put between the PC and
wall socket; we can get thirdparty coolers that provide better heat dissipation
than the stock cooler that comes with the card.
Another way to damage a
graphics card is through greed and curiosity -- overclocking.
It´s just like CPUs pushing
higher voltages and not cooling the card adequately will either cause the card
to overheat and damage the graphics processing unit or/and RAM, or
it will quicken electromigration, which shortens the card´s lifespan.
That being said, graphics
cards are the most frequently upgraded item in a PC and also the most
expensive. So, when the newest game comes out and you want to play at a lower
resolution, see if your graphics card can live up to your expectations.
If not, Google your card and find out how others
overclocked their graphics card successfully.
[Source: Tech & U, New Straits Times. 1 Feb 2010]
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