Although our main focus in this series is on balance between the CPU and GPU, there’s obviously a lot more hardware involved in procuring respectable performance from your platform of choice. For our purposes, we built our test systems around enthusiast-class motherboards from Asus, picked for their stability, overclocking capabilities, and PCI Express connectivity, enabling ATI CrossFireX and/or Nvidia SLI support.
Socket AM3: Asus Crosshair III Formula
At the heart of this series' Socket AM3 testing is Asus' Crosshair III Formula, based on AMD’s 790FX/SB750 chipset combination. Four DIMM slots support dual-channel DDR3-1600 (overclocked) and DDR3-1333 memory settings, while two 16-lane PCIe 2.0 expansion slots support x16/x16 ATI CrossFireX technology.
Asus-specific features for this RoG-series enthusiast motherboard include MemOK (a memory compatibility tool), CPU Level Up (a simplified overclocking utility), TweakIT, a SupremeFX X-Fi eight-channel audio card, and an external LCD poster.
Socket AM3: Asus M4N82 Deluxe
The Asus M4N82 Deluxe will be put to use when it comes time to test dual GeForce cards in SLI paired up to our Socket AM3 processors.
Based on the Nvidia nForce 980a SLI chipset, this Socket AM2+ motherboard has three 16-lane PCIe 2.0 slots supporting two cards in a x16 configuration or three at x8 signaling. The board has an 8+1 power phase design, four DIMM slots supporting dual-channel DDR2-1200 (overclocked) and DDR2-1066. It also includes eight-channel integrated sound.
LGA 1366: Asus Rampage II Extreme
The Asus Rampage II Extreme is based on Intel’s X58 Express chipset, and will be used throughout this series for our LGA 1366 platform.
This feature-packed motherboard is part of the Asus RoG (Republic of Gamers) series, and was designed with the overclocking community in mind. This works out well for us, since two of our balanced platform pieces will center on the effects of overclocking.
The three 16-lane PCIe 2.0 expansion slots support x16/x16 operation or x16/x8/x8 CrossFireX and SLI. The six DIMM slots support triple-channel DDR3-1800 (overclocked) and DDR3-1600 memory. A few of the other notable features unique to Asus' lineup include TweakIT (joystick-like overclocking control), ProbeIt (eight on-board detection points), Extreme Engine with ML Cap Design (the company's multi-phase power management system with multi-layer polymer caps), a SupremeFX X-Fi eight-channel audio card, and an external LCD Poster.
LGA 1156: Asus P7P55D-E Pro
Our newly added LGA 1156 platform utilizes the P7P55D-E Pro from Asus. Based on Intel’s P55 Express chipset, this motherboard features SATA 6Gb/s, USB 3.0, Asus 16-Hybrid Phase (12+2 phase power design + t.Probe), integrated VIA eight-channel HD audio, and overclocking features both beginners and advanced enthusiasts can appreciate.
Four DIMM slots support dual-channel DDR3-2200 (overclocked) and DDR3-1600 memory. The dual PCIe 2.0 x16 slots are configurable as a single 16-lane slot, or as dual eight-lane slots supporting both ATI CrossFire and Nvidia SLI technology.
LGA 775: Asus Rampage Formula
We use the Asus Rampage Formula for any LGA 775-based testing, aside from the Nvidia SLI configurations, which you'll see in an upcoming episode of this series.
Based on the Intel X48 Express chipset, this RoG-series motherboard has two 16-lane PCIe 2.0 slots supporting x16/x16 CrossFire operation and four DIMM slots supporting dual-channel DDR2-1200 (overclocked) and DDR2-1066 memory.
Overclocking-friendly features include Voltminder LED status reminders (essentially, a red-line equivalent for voltage), COP EX OC protection, loadline calibration (stabilizing CPU voltage under load), and cooling via the pin-fin thermal module. A SupremeFX II eight-channel audio card and external LCD poster are also part of the bundle.
LGA 775: Asus P5N72-T Premium
Based on the Nvidia nForce 780i SLI chipset and boasting two 16-lane PCIe 2.0 slots (plus one first-gen PCIe 16x slot), the Asus P5N72-T Premium supports 3-way Nvidia SLI technology (three cards at x16 signaling).
This LGA 775 motherboard has four DIMM slots supporting dual-channel DDR2-1200 (overclocked) and DDR2-1066. Plus, it comes bundled with the RoG Supreme FX II audio card.
Special thanks to Asus for arranging the motherboards needed to make this entire series possible.