The full ATX sized black PCB stands out with the copper heatpipe design. It resembles the striker extreme we reviewed last year. This board based on the new chipset Intel P35 / ICH9R supports more features than before. Firstly, we see there is two PCIe full length slots. The blue slot runs at PCIe x16 and black one is at PCie 4x. Both can be paired up to run CrossFire on this board. Other than that , we can find 3 other PCI and 2 PCIex1 slot on the board. Next to the PCIex1 is the WiFi card which can turn the board into a SOftware based Access Point. To its right is the heatpipe which covers the mosfets and North bridge and south bridge. Behind the PCI/PCIe slots are the various audio codec, lan and i/o controller chipsets
http://www.ocworkbench.com/2007/asus/P5K3-Deluxe/g1.htm