Double-Stuff alternatives
As complete as our Double-Stuff Workstation is, we still have some alternative ideas for how to fill it out.

Processor
We've established that the Core i7-950 has a more sensible value proposition than the Core i7-975 Extreme. However, the Extreme chip has an unlocked upper multiplier that should allow for effortless overclocking. Couple that with a 3.33GHz default core clock speed (up from 3.06GHz on the Core i7-950) and a higher out-of-the-box L3 cache clock, and you really are getting the fastest desktop processor ever. The Core i7-975 Extreme even outpaced a Core 2 Extreme QX9775 "Skulltrail" dual-CPU configuration in several of our benchmarks.

Storage
These 2TB Caviar Greens might be slower and considerably more expensive than their 1TB black counterparts, but they can also store twice as much data. Depending on your needs, that might be preferable.

Sound card
Our Xonar DX will do a fantastic job in games and with analog speakers or headphones, but audio professionals might want something with a few more ports. The Xonar D2X is effectively the same product, but with more bundled cables, as well as coaxial S/PDIF input and output ports. Oh, and the rear ports light up in the dark.

TV tuner
If you feel like making your high-powered workstation double as a digital video recorder, AVerMedia's AVerTV tuner card should be a fine addition. If anyone gives you funny looks, just tell them how fast the Core i7-975 can encode video. By the way, the Asus P6T motherboard doesn't have enough PCIe slots for this tuner card and a PCI Express Xonar, so you'll have to run the PCI-based Xonar D2 instead.

Enclosure
We've just sung the praises of Cooler Master's Cosmos 1000, but the Thermaltake Spedo is a great alternative for overclockers and tinkerers. We love the many little touches, like the fan mount behind the CPU area, the elegant tool-less drive sleds, and the straightforward cable routing system. Take note if you want a quiet system, though: although the Spedo's wealth of large fans and cooling grills will help keep an overclocked system cool, all that ventilation will probably let more noise escape the Spedo than the Cosmos.