PoW fix #167
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PoW fix #167
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Flipping a singe bit in +0 (0x00000000) or -0 (0x80000000) will produce a denormal number. This made us stray into off-specification behaviour on AMD
Reduce iterations to 49152 (3MB written) to aid CPU verification. Ballpark hash time for a decent CPU is around 100ms / hash.