Overclocking tests
The supplied ABIT Graphics Max2 overclocking software left a lot to be desired. For the Siluro FX 5600 256MB, it allowed maximum frequencies of 375MHz GPU and 500MHz memory. That may well be enough for the 4ns elixir memory, but a 50MHz+ GPU overclock is definitely on the cards. Similarly for the Siluro FX 5600 Ultra 128MB DT, the maximum frequencies were 375MHz / 875MHz. Max2 was abandoned and Coolbits used in its place. Using the auto-detect overclocking feature in the control panel gave inflated, erroneous results. In the case of both cards, the automatic feature guessed at an overclock that locked instantly in any 3D application. Therefore it was a case of inching up both sets of clocks until stable, higher frequencies were established.
The test was to run UT2003's benchmark with 4x AA and 8x AF in action. A pass without artifact or error was awarded basic stability status. After much guesswork and testing, the Siluro FX 5600 DT 256MB managed a respectable 405MHz GPU and 445MHz memory (up from 325/400) and the Siluro FX 5600 Ultra DT 128MB topped out at 425MHz GPU and 820MHz memory (up from 350/700).
UT2003, Quake III and 3DMark 2001SE were re-run at 1024x768x32 4x AA / 8x AF.
Healthy boosts for both the Siluro cards.
The 256MB card still can't prise itself off from bottom spot.
The 128MB version, as expected, manages second place in each benchmark.
