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Palit Radeon 4870 Sonic Dual Edition CrossfireX
PCMark Vantage:
PCMark® Vantage is the first objective hardware performance benchmark for PCs running 32 and 64 bit versions of Microsoft® Windows Vista®. PCMark Vantage is perfectly suited for benchmarking any type of Microsoft® Windows Vista PC from multimedia home entertainment systems and laptops to dedicated workstations and hi-end gaming rigs. Regardless of whether the benchmarker is an artist or an IT Professional, PCMark Vantage shows the user where their system soars or falls flat, and how to get the most performance possible out of their hardware. PCMark Vantage is easy enough for even the most casual enthusiast to use yet supports in-depth, professional industry grade testing.
PCMark doesn't scale well with multi GPU setups so I only tested it with the single card.
PCMark does get a nice little 200 point boost when you put the card in Turbo mode. This is great if you are trying to compete with your friends for a high score, otherwise it doesn't amount to much.
LightsMark 2008:
Natural lighting makes artificial graphics life-like. Computers get faster, but rendering more polygons doesn't add value if lighting looks faked, so insiders know that the next big thing is proper lighting aka Realtime Global Illumination. Typical workloads in realtime rendering will shift. Lightsmark simulates it. Global Illumination renders often take hours. Is your computer fast enough for realtime?
LightsMark also does not scale well with multi GPU setups, so I tested it with the single card as well.
LightsMark shows a rather impressive 50 FPS increase when enabling the Turbo mode. I was kind of surprised that it made that much of a difference, considering the results on the prior tests.