User guide
Dragon 12 Installation and User Guide
Processor cache
Minimum: 512 KB
Recommended: 2 MB
Operating systems and RAM
Operating
system 32-bit 64-bit
RAM
Minimum
Rec-
ommended*
Windows7
(SP1 or higher)
√ √ 2 GB 4 GB
Windows Vista
(SP2 or higher)
√ √ 1 GB 2 GB
Windows XP
Home (SP3 or
higher)
√
x
1 GB 2GB
Windows XP
Professional
(SP3 or higher)
√
x
1 GB 2GB
Windows
Server 2008
SP2
√ √ 2GB 4 GB
Windows
Server 2008 R2
(SP1 or higher)
N/A √ 2GB 4 GB
Notes
Windows Vista, Windows XPSP2 and Windows XP 64-bit, Windows Server 2008 SP1, Win-
dows 2000, Windows 2000 Server, and Windows Server 2003 are not supported and instal-
lation is blocked on those systems.
* If your computer has less than the recommended RAM, Dragon will install but displays a
message recommending that you install additional RAM for optimum performance.
Your computer and Dragon's speech model selection
If Dragon sets your speech model to BestMatch III, it also turns off Natural Language Com-
mands (please see More commands) and sets the Speed vs. Accuracy Slider for Fastest
Response, which reduces the number of words or phrases examined during speech rec-
ognition, displaying results faster but with less accuracy.
If your computer has two or more processors and other required resources, Dragon selects
the dual-pass BestMatch V speech model during user profile creation.
For the list of available speech models, see Advanced - Choose Models in the Dragon Help.
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