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Unreal Tournament III Tips
This information is provided by DGUnreal. Please do not copy this and post it
elsewhere.
Editor Performance
The Unreal Engine 3 Editor has higher system requirements than simply running a UE3 based
game. This is due to a number of factors including: always running in high detail
mode, displaying multiple render viewports, loading of assets including textures and
staticmeshes, etc.
Note that Shader Model 2 video cards such as the ATI X800 series have a number of issues
when running the editor, including no display of the world grid.
The editor wants at least 2GB of RAM for itself, so systems that have 2GB or less RAM
installed are going to suffer in performance.
The editor does not detect idle time to pause the various functions and threads such as
rendering, so it will always show a high cpu usage even with a blank empty map.
Technically, this method of not detecting idle time is to prevent thread deadlock and
other multi-threading issues.
When active (selected) the editor will usually be between 50% and 100% CPU usage,
depending on the specific hardware and number of cores. When unfocused (not
selected) the CPU usage will usually drop to around half of active, this is most likely
due to the render thread's loss of the DirectX device context, but I have not confirmed
this with Epic.
I strongly recommend the following minimum system requirements for using the editor:
- Windows XP SP2 or Vista SP1, 32-bit or 64-bit
- Core2Duo Dual or Quad core processor at 2.4GHz to 3.xGHz (eg. E8400, Q6600)
- 3GB 800MHz RAM
- NVidia 8800 series or ATI HD3800 series Video Adapter
Single core processors such as P4's will always run at 100% CPU Usage when the editor is
active. This should drop to approximately 65% when unfocused. Editing will
often be jerky.
Single core Hyper-Thread processors such as P4HT's will always run at 100% CPU Usage when
the editor is active. This should drop to approximately 65% when unfocused.
Editing will be slow.
P4-3.2GHz HT, 2GB 800MHz RAM - Editor active vs Editor
unfocused
Dual core Core2Duo processors such as E8400's will usually run at 100% CPU Usage when the
editor is active. This should drop to approximately 50% when unfocused.
Note that the Pentium-D dual core processor has lower performance than the Core2Duo
series.
Core2Duo E8400 3.0GHz, 4GB RAM - Editor active vs Editor
unfocused
Quad core Core2Duo processors such as Q6600's will usually run at 50% CPU Usage when the
editor is active. This should drop to approximately 25% when unfocused.
Core2Duo Q6600 2.4GHz, 8GB RAM - Editor active vs Editor
unfocused
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