<p>Obviously, that's 64-bit windows.</p>

<p>Also, what's the maximum amount of memory a single 64-bit process can use?
I was kind of counting on using it all... 
(Yes, I know what I'm doing, please don't tell me that if I need that much RAM i must be doing something wrong)</p>

<p>Also, is this the same for a .Net 2.0 process? Or is there a lower limit for .Net?</p>

[{'answer_id': 33633, 'author': 'Dinah', 'author_id': 356, 'author_profile': 'https://Stackoverflow.com/users/356', 'pm_score': 0, 'selected': False, 'text': '<p>Something we found out recently: with MySQL running on Win32, you can only use up to 2GB per process. On Win64, the memory is not managed as well and a single MySQL instance will run your memory into the ground. Ours used up all 16GB we have. So regarding how much memory 1 64-bit process can use: the answer is however much the OS allows.</p>\n'}, {'answer_id': 33635, 'author': 'Re0sless', 'author_id': 2098, 'author_profile': 'https://Stackoverflow.com/users/2098', 'pm_score': 3, 'selected': False, 'text': '<p>What version of windows? it differs from XP to vista and from home to business versions of vista, and I would guess again for server.</p>\n\n<p>see <a href="http://msdn.microsoft.com/en-us/library/aa366778.aspx" rel="nofollow noreferrer">here for more info on maximum ram for diffrent windows versions</a></p>\n\n<p>for Windows Server 2008 Datacenter MS quote 2 TB of physical memory.</p>\n'}, {'answer_id': 33636, 'author': 'Alasdair', 'author_id': 2654, 'author_profile': 'https://Stackoverflow.com/users/2654', 'pm_score': 0, 'selected': False, 'text': '<p><a href="http://en.wikipedia.org/wiki/Windows_XP_editions#Advantages" rel="nofollow noreferrer">According to wikipedia</a> you can have 128 GB of physical RAM in a 64-bit Windows XP computer.</p>\n'}, {'answer_id': 33639, 'author': 'Ian Patrick Hughes', 'author_id': 2213, 'author_profile': 'https://Stackoverflow.com/users/2213', 'pm_score': 1, 'selected': False, 'text': '<p>We run Windows boxes with 16 gigs of memory, but that is because we are running multiple VM Ware instances, I presume you mean in a single instance. On Vista it depends upon the edition. It breaks out like this:\n<br></p>\n\n<blockquote>\n  <p><strong>Vista Basic:</strong> 8 GB<br>\n  <strong>Vista Home Premium:</strong> 16 GB<br>\n  <strong>Vista Business/Enterprise/Ultimate:</strong> 128+ GB </p>\n</blockquote>\n'}, {'answer_id': 33645, 'author': 'Daniel Magliola', 'author_id': 3314, 'author_profile': 'https://Stackoverflow.com/users/3314', 'pm_score': 0, 'selected': False, 'text': '<p>This is a Windows Server machine.</p>\n\n<p>As for which edition (Datacenter, Enterprise, etc)... Whatever it takes to give my little .Net Process as much memory as it can.</p>\n'}, {'answer_id': 33659, 'author': 'Darryl Braaten', 'author_id': 1834, 'author_profile': 'https://Stackoverflow.com/users/1834', 'pm_score': 2, 'selected': True, 'text': '<p>From <a href="http://technet.microsoft.com/en-us/library/cc758523.aspx" rel="nofollow noreferrer">http://technet.microsoft.com/en-us/library/cc758523.aspx</a>\n  - Windows Server 2003, 64 bit Datacenter Edition supports physical memory up to 512GB</p>\n\n<p>A single process should be able to use most of it, some will be used by the OS.</p>\n\n<p>The answer from Re0sless is better then mine. The limit is now 2TB, in Datacenter SP2, and 2008.</p>\n'}, {'answer_id': 33698, 'author': 'Jon Erickson', 'author_id': 1950, 'author_profile': 'https://Stackoverflow.com/users/1950', 'pm_score': 3, 'selected': False, 'text': '<h1><a href="http://blogs.technet.com/markrussinovich/archive/2008/07/21/3092070.aspx" rel="nofollow noreferrer">Link</a></h1>\n\n<p><img src="https://i.stack.imgur.com/BLf9j.png" alt="64 processors 2tb ram"></p>\n'}, {'answer_id': 302098, 'author': 'Community', 'author_id': -1, 'author_profile': 'https://Stackoverflow.com/users/-1', 'pm_score': 0, 'selected': False, 'text': '<p>Switch to Linux. You will not have any of these issues and you will get better performance.</p>\n'}]
['https://Stackoverflow.com/questions/33630', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/3314/']