In reply to Tim Chappell:
I've never raced the clock on a route but have timed a few ascents out of curiosity.
I soloed Orion Direct in around an hour and 20 minutes. It was the first route I'd climbed on the Orion Face so it was entirely new ground and I was taking my time. When I soloed Astral a week later it only took an hour. The weather was pretty rough that day so I didn't linger and I'd have been more familiar with the pitches leading up to the Basin.
I've never climbed a winter route twice so all my solos have been onsight (and ropeless and gearless). But I reckon if your intention was specifically to speed climb and you'd logged a few practice runs on the route then Orion Direct could be climbed in 30-40mins.
Someone mentioned Point Five. When I soloed Point Five it was the first Grade V ice route I'd ever climbed (with or without a rope). I must have been pretty nervous because by the end of the first pitch my forearms felt like they were going to explode. I waited for 10mins below the chimney pitch (in a crappy position as I didn't have any gear to take a proper rest) before continuing. When I topped out my watch read 49mins.
Without the pumped forearms I guess I'd have been around 39mins which sounds about right as a few days later I did Zero in just over 40mins. Again, if someone was sufficiently motivated and prepared, the big 300m V's could probably be climbed in 20-30mins.