Wired put up a gallery of a variety of steampunk creations the other day. The gallery itself is great, especially considering that most of the designs are individually created projects. I'm not sure how instructive it is to compare steampunk to 8-bit revisitations and such however:

"Retro-futurism is all the rage these days: antique computers, 8-bit game art, classic cases for modern gear, anything to make the onslaught of new technology less disposable. The yearning for timelessness in a constantly renewing tech culture has led to a spike in interest in the steam-powered, brass-encrusted world of steampunk."

While the beautifully styled "antique" computers are a an aestheticized vision of a past-future overlaid onto future technologies, the 8-bit renaissance is nostalgic vision of past-presents still socially imaginable. Steampunk versus technostalgia.