Windows Version 4.07 has been released for Collatz, Mini_Collatz, and Solo_Collatz. This version fixes a bug in checkpointing as well as allows Catalyst 13.4 drivers to use OpenCL optimization which can increase the speed by up to 6 times versus v4.06. (Note: It still isn't as fast as the ATI 2.09 app on older GPUs though.) As usual, please report any issues.
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