Just an addition to what everyone else said: The on-board video does
pretty well on my home PC for basic things, but there is a noticeable
difference just when surfing the net or running any program. For
doing 3-D CAD modeling and higher level work on a PC, my opinion is
that a top notch video card is a must.
If you're doing modeling applications (3-D Cad, Stress Analysis, Flow
Analysis, etc.) that uses a visual interface, it's important to get a
compatible driver for the software you are using, even if it's an
older version. The latter (analysis of models) also tax memory and
hard drive speed. As for the video alone,the additional load on the
PC to handle RAM sharing, etc. (not having a dedicated circuit to
handle video) makes a significant difference for all applications.
All software is becoming visually intensive, regardless of what you're
doing to make tasks faster and/or easier for the user. I could tell a
difference just opening and closing programs, which is handled mostly
by "explorer.exe" GUI in Windows XP.
I'm just running the basic integrated graphics on my home PC, but I've
noticed a significant difference when using a friend's PC running an
inexpensive graphics card that uses both shared and on-board RAM. It
really depends on whether or not you're in a hurry. I've done 3-D
modeling on both high-end workstations, and obsolete machines that
were still running Windows 98 several years after XP was released.
Both of machines got the job done, but one was much faster and less
frustrating due to its response time.
It all depends on what you're doing with the PC and how fast you wan't/
need to get it done. I like it fast myself, but have to stay within
my budget. Be sure to check whether or not the graphics card has on-
board memory. It does make a huge difference having it on the card
instead of going through the address/data bus to access the memory.
The current trend in lower end cards is to call the card a "256 MB"
graphics card, but if you read, 128 MB of the RAM is shared system
RAM. This feature can probably be disabled. Just shop around and
don't be afraid to ask questions, and keep in mind that not everyone
in retail knows exactly what they're talking about. Do your own
research if it is an important issue to you. It does affect speed.
If you're just looking for an out-right opinion, I'd say go for some
type of graphics card, to take some load off of the MOBO RAM and
resources. You're budget will dictate this.
SDK