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MSI N260GTX OC Review- Page 4 of 7

ANTIALIASING IMAGE QUALITY

Before examining antialiasing performance, the following video clips, which make use of ToMMti-Systems' FSAA Tester (~320KB), illustrate the benefits of antialising. An option in FSAA Tester allows the image below to be animated, which basically causes the wheel to spin clockwise.

While the image was being animated, Fraps was used to record video of the wheel spinning. The video clips are rather large in size as they were saved in their original uncompressed format. The video clips are only 5 to 6 seconds long, but they reveal valuable information in regards to antialiasing.

Antialiasing Comparison

Larger Files - No Compression

No Antialiasing (~55MB)

2x Antialiasing (~53MB)

4x Antialiasing (~60MB)

8x Antialiasing (~57MB)

16xQ Antialiasing (~71MB)

Smaller Files - 20% Compression

No Antialiasing (~5MB)

2x Antialiasing (~13MB)

4x Antialiasing (~19MB)

8x Antialiasing (~21MB)

16xQ Antialiasing (~22MB)

When the video with no antialiasing is played back, one should notice the "jaggies." Located on the edge of each pinwheel, they exhibit a distracting crawling effect during animation. This effect becomes prevalent as the pinwheels approach a horizontal position.

A noticeable reduction in aliasing occurs as the level of antialiasing increases and perfection is close to being achieved with 16xQ antialiasing. Although 16xQ antialiasing is a desireable feature, it also causes the largest impact on performance.

Note that the resolution of the test image and resulting video clip is 792x572 pixels.

Next Page: Antialiasing Performance

Last Updated on June 5, 2009


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