Does having 4 Gigabyte Tuning enabled cause a performance hit?
closed as not a real question by Chris S♦, Bart De Vos, rnxrx, Ward, EEAA Aug 24 '12 at 3:57
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If you have 32-bit apps that could use more than 2GB of virtual memory (4GT increases it to 3GB) then yes, you might benefit from enabling it. If your apps are network or IO heavy however, the memory available to those operation will be reduced and you may experience degraded performance. It really depends on the situation and the apps you're running. Experimenting may be the best way to find out.