2.6 CrossFireXTM, 3-Way CrossFireXTM and Quad CrossFireXTM Operation Guide
This motherboard supports CrossFireXTM, 3-way CrossFireXTM and Quad CrossFireXTM features. CrossFireXTM technology offers the most advantageous means available of combining multiple high performance Graphics Processing Units (GPU) in a single PC. Combining a range of different operating modes with intelligent software design and an innovative interconnect mechanism, CrossFireXTM enables the highest possible level of performance and image quality in any 3D application. Currently CrossFireXTM features are supported with Windows® XP with Service Pack 2 / VistaTM / 7 OS. 3-way CrossFireXTM and Quad CrossFireXTM features are supported with Windows® VistaTM / 7 OS only. Please check the AMD website for AMDTM CrossFireXTM driver updates.
1.If a customer incorrectly configures their system they will not see the performance benefits of CrossFireXTM. All three CrossFireXTM components, a CrossFireXTM Ready graphics card, a CrossFireXTM Ready motherboard and a CrossFireXTM Edition co-processor graphics card, must be installed correctly to benefit from the CrossFireXTM multi-GPU platform.
2.If you pair a 12-pipe CrossFireXTM Edition card with a 16-pipe card, both cards will operate as 12-pipe cards while in CrossFireXTM mode.
2.6.1Graphics Card Setup
2.6.1.1 Installing Two CrossFireXTM-Ready Graphics Cards
Different CrossFireXTM cards may require different methods to enable CrossFi- reXTM feature. In below procedures, we use Radeon HD 3870 as the example graphics card. For other CrossFireXTM cards that AMDTM has released or will release in the future, please refer to AMDTM graphics card manuals for detailed installation guides.
Step 1. Insert one Radeon graphics card into the PCIE2 slot and the other Rad- eon graphics card to the PCIE3 slot. Make sure that the cards are properly seated on the slots.
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ASRock 990FX Extreme3 Motherboard