Dell 1850
marmoset posted quite the thorough rant about Dell PowerEdge 1850 1U servers, as well as hardware from other vendors.
The fact that they increased power usage by approximately 250% is truly baffling. The Xeon CPUs went from the 533Mhz versions in the Dell 1750 to the 800Mhz versions in the 1850 — Intel’s spec sheets show that the chips can use up to 10% more power (IIRC); the power supplies that come with the 1850 are rated to produce around 20% more power. I have not been able to figure out what else is different enough to justify the increased power draw.