MobileRead Forums - View Single Post - Book conversions MUCH faster on 64-bit Windows 7

HarryT · 11-21-2009, 06:47 AM

I commented a few weeks ago that I seemed to be hitting some sort of conversion limit with converting large books from Mobi to ePub (a book with 8MB of HTML source took 9 minutes; a book with 10MB took 20min). Kovid kindly explained that this was down to the parser used by Calibre. This was on an XP machine with 4GB RAM and a 2.4GHz dual core CPU.

I've just bought a new laptop running 64-bit Windows 7. Although this is nominally a considerably slower machine (also 4GB RAM, but this time a 1.3GHz dual core CPU), I was surprised and pleased to find that Calibre's book conversion is now very much faster. The book which took 9m 50s to convert under XP only takes 3m 35s under Windows 7 - almost 3x faster!

Might this be down to the fact that 64-bit Windows can make more efficient use of the available memory, I wonder?

Whatever the reason, it's very welcome.

11-21-2009, 06:47 AM	#1
HarryT eBook Enthusiast Posts: 85,556 Karma: 93383099 Join Date: Nov 2006 Location: UK Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6	Book conversions MUCH faster on 64-bit Windows 7 I commented a few weeks ago that I seemed to be hitting some sort of conversion limit with converting large books from Mobi to ePub (a book with 8MB of HTML source took 9 minutes; a book with 10MB took 20min). Kovid kindly explained that this was down to the parser used by Calibre. This was on an XP machine with 4GB RAM and a 2.4GHz dual core CPU. I've just bought a new laptop running 64-bit Windows 7. Although this is nominally a considerably slower machine (also 4GB RAM, but this time a 1.3GHz dual core CPU), I was surprised and pleased to find that Calibre's book conversion is now very much faster. The book which took 9m 50s to convert under XP only takes 3m 35s under Windows 7 - almost 3x faster! Might this be down to the fact that 64-bit Windows can make more efficient use of the available memory, I wonder? Whatever the reason, it's very welcome.