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<a name="wp1002289"> </a><h2 class="pHeading1">
MultiGPU
</h2>
<a name="wp1002290"> </a><p class="pBody">
Use MultiGPU to combine the power and performance to two or more Visual Processing Units to drive a single display. Harness the power of a dual PCIe&#8482; based computer to deliver up to twice the GPU perofrmance. when using 3D graphics applications.
</p>
<a name="wp1002296"> </a><p class="pBody">
MultiGPU aspect requires a motherboard with two X16 PCIe&#8482; slots, a master graphics card, and a slave graphics card. An interconnect cable connects the master card to the slave card, then to a single monitor.
</p>
<a name="wp1002298"> </a><p class="pBody">
For more information see the MultiGPU web page at:
</p>
<a name="wp1002299"> </a><p class="pBody">
ati.com/mgpu
</p>
<a name="wp1002142"> </a><p class="pDropDownClosed">
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorOpen("exwp1002142", false);</script>MultiGPU System Requirements<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorClose("exwp1002142", false);</script>
</p>
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<a name="wp1002245"> </a><p class="pBody">
System hardware requirements:</p>
<div align="left">
<table border="1" id="wp1002145table1002143">
  <caption></caption>
  <tr align="left">    <td colspan="2" rowspan="1"><a name="wp1002145"> </a><h3 class="pHeading3">
Motherboards
</h3>
</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="2"><a name="wp1002149"> </a><p class="pIndented1">
Motherboard with ATI Dual Slot chipset
</p>
</td>
</tr>
  <tr align="left"></tr>
  <tr align="left">    <td colspan="2" rowspan="1"><a name="wp1002159"> </a><p class="pIndented1">
Two PCIe&#8482; X16 slots
</p>
</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1">&#160;</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1"><a name="wp1002168"> </a><h3 class="pHeading3">
Supported ATI Graphics Cards
</h3>
</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1"><a name="wp1002172"> </a><p class="pBody">
Master Cards
</p>
</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1"><a name="wp1002178"> </a><p class="pIndented1">
Radeon X850 XT Edition
</p>
</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1"><a name="wp1002185"> </a><p class="pIndented1">
Radeon X800 Edition
</p>
</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1"><a name="wp1002190"> </a><p class="pBody">
Slave cards
</p>
</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1"><a name="wp1002196"> </a><p class="pIndented1">
Radeon X850 XT
</p>
</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1"><a name="wp1002203"> </a><p class="pIndented1">
Radeon X850
</p>
</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1"><a name="wp1002210"> </a><p class="pIndented1">
Radeon X800 XL
</p>
</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1"><a name="wp1002217"> </a><p class="pIndented1">
Radeon X800 ((256MB or 128MB) 
</p>
</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1">&#160;</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1"><a name="wp1002226"> </a><h3 class="pHeading3">
Power Spply
</h3>
</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1"><a name="wp1002230"> </a><p class="pIndented1">
500 watt power supply or better
</p>
</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1">&#160;</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1"><a name="wp1002238"> </a><h3 class="pHeading3">
Additional Hardware
</h3>
</td>
</tr>
  <tr align="left">    <td colspan="2" rowspan="1"><a name="wp1002242"> </a><p class="pIndented1">
Interconnect cable
</p>
</td>
</tr>
</table>
</div>
<p class="pBody">

</p>
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<a name="wp1001669"> </a><h4 class="pHeading4">
What would you like to do?
</h4>
<a name="wp1002272"> </a><p class="pDropDownClosed">
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorOpen("exwp1002272", false);</script>Enable MultiGPU<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorClose("exwp1002272", false);</script>
</p>
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteDIVOpen("exwp1002272", false);</script>
<div class="pSmartList1"><ol type="1" class="pSmartList1">
<a name="wp1002273"> </a><div class="pSmartList1"><li>Click <span style="font-weight: bold">MultiGPU</span> in Advanced View.</li></div>
<a name="wp1002274"> </a><div class="pSmartList1"><li>Click <span style="font-weight: bold">Enable MultiGPU rendering.</span></li></div>
</ol></div>
<a name="wp1002275"> </a><p class="pIndented1">
Note:	MultiGPU&#39;s higher quality anti-aliasing can be adjusted in the Catalyst&#8482; Control Center 3D settings aspect.
</p>
<a name="wp1002281"> </a><p class="pIndented1">
Note:	It is recommended that Catalyst&#8482; A.I. be enabled.
</p>
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<a name="wp1000984"> </a><p class="pDropDownClosed">
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorOpen("exwp1000984", false);</script>Adjust Anti-Aliasing<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorClose("exwp1000984", false);</script>
</p>
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteDIVOpen("exwp1000984", false);</script>
<div class="pSmartList1"><ol type="1" class="pSmartList1">
<a name="wp1000991"> </a><div class="pSmartList1"><li>Expand <span style="font-weight: bold">3D</span> in Advanced View.</li></div>
<a name="wp1000992"> </a><div class="pSmartList1"><li>Click <span style="font-weight: bold">Anti-Aliasing</span>.</li></div>
<a name="wp1000993"> </a><div class="pSmartList1"><li>Ensure the application override is enabled. To do so, make sure the <span style="font-weight: bold">Let the Application Decide</span> check box is not selected.</li></div>
</ol></div>
<a name="wp1000994"> </a><p class="pIndented1">
Note:	The slider control becomes unavailable when <span style="font-weight: bold">Let the Application Decide</span> is enabled.
</p>
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteDIVClose();</script>
<a name="wp1002254"> </a><p class="pDropDownClosed">
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorOpen("exwp1002254", false);</script>Change Catalyst&#8482; A.I. settings<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorClose("exwp1002254", false);</script>
</p>
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<div class="pSmartList1"><ol type="1" class="pSmartList1">
<a name="wp1002256"> </a><div class="pSmartList1"><li>Expand<span style="font-weight: bold"> 3D</span> in Advanced View.</li></div>
<a name="wp1002259"> </a><div class="pSmartList1"><li>Click <span style="font-weight: bold">Catalyst&#8482;</span> A.I.</li></div>
<a name="wp1002263"> </a><div class="pSmartList1"><li>If necessary, clear the check mark from Disable <span style="font-weight: bold">Catalyst&#8482;</span> A.I.</li></div>
<a name="wp1002265"> </a><div class="pSmartList1"><li>Click and drag to slider to the desired setting.</li></div>
</ol></div>
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<a name="wp1002012"> </a><p class="pDropDownClosed">
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorOpen("exwp1002012", false);</script>Apply your settings<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorClose("exwp1002012", false);</script>
</p>
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<div class="pSmartList1"><ol type="1" class="pSmartList1">
<a name="wp1002015"> </a><div class="pSmartList1"><li>Click <b class="cBold">Apply </b>to save your changes and leave the Catalyst&#8482; Control Center open.</li></div>
<a name="wp1002019"> </a><div class="pSmartList1"><li>Click <b class="cBold">OK</b> to save your changes and exit the Catalyst&#8482; Control Center.</li></div>
</ol></div>
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteDIVClose();</script>
<a name="wp1002023"> </a><p class="pDropDownClosed">
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorOpen("exwp1002023", false);</script>Discard your settings<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorClose("exwp1002023", false);</script>
</p>
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<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1002024"> </a><div class="pSmartList1"><li>Click <span style="font-weight: bold">Discard</span> to ignore any unsaved changes and restore the settings that existed when the Catalyst&#8482; Control Center was opened or the last time <span style="font-weight: bold">Apply</span> was used. Discard does not close the Catalyst&#8482; Control Center .</li></div>
</ul></div>
<a name="wp1002031"> </a><p class="pBody">
Clicking<b class="cBold"> Discard </b>applies to all features of an aspect, not just the feature in the current view.
</p>
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<a name="wp1001237"> </a><h4 class="pHeading4">
If MultiGPU Is Unable to Start
</h4>
<a name="wp1002086"> </a><p class="pDropDownClosed">
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorOpen("exwp1002086", false);</script>Change motherboard BIOS settings<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorClose("exwp1002086", false);</script>
</p>
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<a name="wp1002087"> </a><p class="pBody">
Some motherboards may have a system BIOS option to switch between single or dual PCIe&#8482; slot support. The default setting may be single slot support.
</p>
<a name="wp1002093"> </a><p class="pBody">
Refer to the motherboard&#39;s manual for information to enable dual PCIe&#8482; slot support.
</p>
<a name="wp1002095"> </a><p class="pBody">
For more information see the MultiGPU web page at:
</p>
<a name="wp1002096"> </a><p class="pBody">
ati.com/mgpu
</p>
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteDIVClose();</script>
<a name="wp1002076"> </a><p class="pDropDownClosed">
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorOpen("exwp1002076", false);</script>Connecting the graphics cards to your monitor<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorClose("exwp1002076", false);</script>
</p>
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<a name="wp1002077"> </a><p class="pBody">
In order for MultiGPU to function the interconnect cable must be correctly connected to both the master and slave graphics cards.
</p>
<div class="pSmartList1"><ol type="1" class="pSmartList1">
<a name="wp1002078"> </a><div class="pSmartList1"><li>Connect the DMS-59 connector to the DMS-59 connection on the master card.</li></div>
<a name="wp1002079"> </a><div class="pSmartList1"><li>Connect the DVI-I connector to the DVI-I connection on the slave card.</li></div>
<a name="wp1002080"> </a><div class="pSmartList1"><li>Connect the remaining DVI-I connector to your monitor.</li></div>
</ol></div>
<a name="wp1002081"> </a><p class="pBody">
For more information see the MultiGPU web page at:
</p>
<a name="wp1002082"> </a><p class="pBody">
ati.com/mgpu
</p>
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteDIVClose();</script>
<a name="wp1002068"> </a><p class="pDropDownClosed">
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorOpen("exwp1002068", false);</script>Graphics cards with different amounts of memory<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorClose("exwp1002068", false);</script>
</p>
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<a name="wp1002069"> </a><p class="pBody">
Graphics card with different amounts of memory can by used with MultiGPU. However, restarting your computer is required. This will cause MultiGPU to reduce the amount of memory on the card with the most memory to match the memory size of the graphics card with the least amount of memory.
</p>
<a name="wp1002070"> </a><p class="pBody">
Clicking <span style="font-weight: bold">OK</span> to the memory mismatch error message will restart your computer.
</p>
<a name="wp1002071"> </a><p class="pIndented1">
Note:	When disabling MultiGPU you will be given the option to restart your computer to restore the original graphics memory size or continue with the reduced memory size.
</p>
<a name="wp1002072"> </a><p class="pBody">
For more information see the MultiGPU web page at:
</p>
<a name="wp1002073"> </a><p class="pBody">
ati.com/mgpu
</p>
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteDIVClose();</script>
<a name="wp1001898"> </a><p class="pDropDownClosed">
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorOpen("exwp1001898", false);</script>Disabling MultiGPU<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorClose("exwp1001898", false);</script>
</p>
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<a name="wp1002063"> </a><p class="pBody">
When MultiGPU is disabled you will need to restore your graphics settings. It is recommended that you create a Profile that contains all your settings. 
</p>
<a name="wp1002064"> </a><p class="pBody">
For more information see the MultiGPU web page at:
</p>
<a name="wp1002065"> </a><p class="pBody">
ati.com/mgpu
</p>
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<a name="wp1002100"> </a><p class="pDropDownClosed">
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorOpen("exwp1002100", false);</script>Create a profile<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorClose("exwp1002100", false);</script>
</p>
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<a name="wp1002103"> </a><p class="pBody">
A profile can be created from any aspect of Catalyst&#8482; Control Center.
</p>
<div class="pSmartList1"><ol type="1" class="pSmartList1">
<a name="wp1002105"> </a><div class="pSmartList1"><li>Make customized changes by adjusting the various sliders and buttons for the aspects to be included in your profile.</li></div>
<a name="wp1002106"> </a><div class="pSmartList1"><li>Open the <span style="font-weight: bold">Profiles Manager</span>.</li></div>
<a name="wp1002108"> </a><div class="pSmartList1"><li>Enter a name for your Profile in <span style="font-weight: bold">Create or Edit Profile</span>.</li></div>
<a name="wp1002109"> </a><div class="pSmartList1"><li>Enter a description of the profile.</li></div>
<a name="wp1002110"> </a><div class="pSmartList1"><li>Select the composition, activation, and applications options that you wish to apply to the profile.</li></div>
<a name="wp1002111"> </a><div class="pSmartList1"><li>Click <span style="font-weight: bold">Save.</span></li></div>
</ol></div>
<a name="wp1002112"> </a><p class="pBody">
For more information see the MultiGPU web page at:
</p>
<a name="wp1002113"> </a><p class="pBody">
ati.com/mgpu
</p>
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<a name="wp1002129"> </a><p class="pDropDownClosed">
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorOpen("exwp1002129", false);</script>Card Reversal Recommend<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorClose("exwp1002129", false);</script>
</p>
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<a name="wp1002130"> </a><p class="pBody">
A recommendation message to reverse the graphics card positions may appear if the master graphics card is not installed into the first PCIe&#8482; slot. Although MultiGPU can be enabled, performance may be improved by reversing the graphics card in the computer.
</p>
<a name="wp1002136"> </a><p class="pBody">
See you motherboard&#39;s manual to determine which is the first PCIe&#8482; slot.
</p>
<a name="wp1002138"> </a><p class="pBody">
For more information see the MultiGPU web page at:
</p>
<a name="wp1002139"> </a><p class="pBody">
ati.com/mgpu
</p>
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<a name="wp1001952"> </a><p class="pDropDownClosed">
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorOpen("exwp1001952", false);</script>3D client is active<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorClose("exwp1001952", false);</script>
</p>
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<a name="wp1002002"> </a><p class="pBody">
You will not be able to start MultiGPU if a 3D application, game, or video playback, such as a DVD movie, is running. 
</p>
<a name="wp1002003"> </a><p class="pBody">
Close all open 3D applications, games, and movie player applications then enable MultiGPU.
</p>
<a name="wp1002004"> </a><p class="pBody">
For more information see the MultiGPU web page at:
</p>
<a name="wp1002005"> </a><p class="pBody">
ati.com/mgpu
</p>
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteDIVClose();</script>
<a name="wp1002050"> </a><p class="pDropDownClosed">
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorOpen("exwp1002050", false);</script>MultiGPU Aspect Cannot Be Shown<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteAnchorClose("exwp1002050", false);</script>
</p>
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<a name="wp1002051"> </a><p class="pBody">
MultiGPU aspect is only available for the master graphics adapter. Make certain that the motherboard&#39;s system BIOS has Dual PCIe&#8482; slots enabled. Also make certain that the master and slave graphics cards are in the correct PCIe&#8482; slot. For more information see your motherboard&#39;s manual.
</p>
<a name="wp1002058"> </a><p class="pBody">
For more information see the MultiGPU web page at:
</p>
<a name="wp1002059"> </a><p class="pBody">
ati.com/mgpu
</p>
<a name="wp1002116"> </a><p class="pBody">
MultiGPU Is Currently Unavailable
</p>
<a name="wp1002117"> </a><p class="pBody">
This error is occurred because MultiGPU did not correctly detect your graphics hardware or their is a problem with the software.
</p>
<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1002118"> </a><div class="pSmartList1"><li>Check the graphics card are installed correctly.</li></div>
<a name="wp1002119"> </a><div class="pSmartList1"><li>Check the interconnect cable is installed correctly.</li></div>
<a name="wp1002120"> </a><div class="pSmartList1"><li>Close all running 3D applications.</li></div>
<a name="wp1002123"> </a><div class="pSmartList1"><li>Re-install the CATALYST&#8482; Control Center. For information on installing the software see the Getting Started Guide that came with your graphics card.</li></div>
</ul></div>
<a name="wp1002125"> </a><p class="pBody">
For more information see the MultiGPU web page at:
</p>
<a name="wp1002126"> </a><p class="pBody">
ati.com/mgpu
</p>

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