Compatability issue? - Excel 2007 to Excel 2013

The first time you open a file that was last saved in a previous version of Excel, the file is completely recalculated.

Starting with Excel 2000, Excel forces a complete recalculation of all workbooks that are opened if they were previously saved in an earlier version of Excel, regardless of the link-update status. To fully recalculate the workbook, Excel forces updates of all external references as well, even if you choose not to update when you are prompted to. This process occurs because Excel is updating the workbook calculation chain to the current version.

Maybe the reason for your workbook slowing down..

I have 2007, 2010 and 2013 - 2013 runs the same files, significantly slower. It is a far more involved program, doing (apparently) much more. There is another thread some place on the forum where other members have complained about the performance of '13 compare to earlier versions.

I think some of it may have to do with the fancy animation in some areas. I will try and dig out that other thread and post the link here

Originally Posted by FDibbins

There is another thread some place on the forum where other members have complained about the performance of '13 compare to earlier versions.

I see a lot of complaining as well.. However, I notice my files to run a bit faster on the 2013 version..

Besides, the workbook size is also a bit smaller with the 2013 version..

If your computer has decent hardware specs, I don't think the versions make a big difference at all..

But what you are saying is definitely true -

It is a far more involved program, doing (apparently) much more

I run an I7 with 12g ram and 2tb HDD, and I can definitely see a difference

Then it surely must be as you say..

OK here you are...
http://www.excelforum.com/the-water-...013-sucks.html

An Interesting thing that I just found from Post7

http://spreadsheetpage.com/index.php...eed_benchmark/