Why Is My Graphics Card Slower Than Onboard Graphics?
If you have installed a graphics card and find that your graphics performance is actually worse than onboard graphics, it is likely that you installed an outdated PCI graphics card on a motherboard with the faster and more advanced PCI-E onboard.
Significance
Although a graphics card's GPU or graphics processing unit appears higher in capacity than that of a computer's default pre-installed onboard graphics, the newly installed graphics card is likely not a PCI Express graphics card.
History
PCI Express or "PCI-E" has replaced the outdated Accelerated Graphics Port or "AGP" as the standard onboard graphics included and pre-installed on new computer systems. When an outdated graphics card such as a PCI, PCI-X or AGP graphics is installed and used in place of PCI-E onboard graphics, the performance of the graphics card will be notably slower.
Prevention/Solution
Ensure that the graphics card is compatible with PCI Express. Alternatively, you may need to update your graphics card drivers by visiting the homepage of the manufacturer of the graphics card to download free driver updates to install on your computer.
Tags: graphics card, graphics card, onboard graphics, Card Slower, Card Slower Than, Graphics Card Slower, graphics performance