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Forums >> Revit Structure >> Technical Support >> Revit 2011 upgrade
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Joined: Wed, Jun 2, 2010
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I am about to upgrade to 2011 from 2010 is there any serious issues with doing this at the moment. Also have revit sorted out there ASB section family to export/import to Fastrak yet Thanks
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Joined: Tue, May 22, 2007
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There was some stability problems but they were corrected with the "Update 1", check here: http://usa.autodesk.com/adsk/servlet/item?siteID=123112&id=14973244
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Joined: Wed, Dec 17, 2003
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i still seem to crash about 2-4 times a day, even after the update which did help it was much higher. but i think it is related to my video driver we have fx 570's in all of our machines. when i open up 11' i get a warning about my video driver. we are working on trying to update the driver or upgrade the card. not sure what the best thing to is, or what card works best with revit.
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Bimman, watch this: http://www.revitcity.com/forums.php?action=viewthread&thread_id=20595 Your graphic card in on the list
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by switching to 2gb from 3gb, will this change anything else on my computer. i just did it and everything seems to be loading alot slower.
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It slowers everything that requires some memory to temporary store files. Like loading as you expirienced. If all computer takes 1 GB (Win Vista) you end with only 1 instead of 2 so it will be 2 times slower (not exactly but you see the point). The priority of todays computers is 64bit version of Operation system for workstations. We use 64bit Windows Vista with 8 GB of RAM (or 4 on some computers).
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so this seems to be more of an issue with 32 bit systems, that only have a max of 4Gb. but mine is act 3.25 after windows takes what it needs. So in theroy if Revit grabs 3 and it then only leaves 1 for everything else. thus creating a big drain and crashing. Am i seeing that right.
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Slightly different: 32 bit Operation system has 32 bit Kernel that has 34,359,738,368 adressses 4GiB = 4x (8x1024x1024x1024) So the limitation would be 4 GiB of memory BUT (big BUT) the computer has more Hardware than just RAM so the more hardware you have to adress, the less memory you see in 32bit Operation system. Someone see 3,5 GiB of RAM (and has 4 GiB inside PC) and someone 3,0 (and has 4 GiB inside PC). You see the result ? The problem is probably that Revit want to "use" all memory, but the 32bit system can't adress whole 4 GiB -> Crash. Also note that graphic cards for CAD uses huge amount of adresses itself so that maybe the case here ... You have 3 GB but the graphic uses adressses of amount 1 Gig and rest of HW 0,5 Gig so you are: 4 (max) - 1 (graphic) - 0,5 (other HW) = 2,5 GiB than Revit wants "all" the 3 GiB ->Crash When you have only 2 GiBof RAM and you have now 2,5 GiB (from adresses) -> OK Hope im not confusing with this. 
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very good explaination. i totally see what is going on, thanks for the info.
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