The memory still didn't come in. I could've waited, but it turns out I was misinformed/confused about the new motherboards coming in (they hadn't), and there was no ETA on those, since Intel's chipsets still suck.
So... I ordered some AMD Opterons.
Silicon Mechanics had enough in stock to put together some systems (on a Sunday!) with Tyan motherboards, dual Opteron 242s, and 8GB of ram.
One of the Opteron systems died in burn-in after 7 hours. The other didn't. But I don't have much confidence in those now.
So, on to other vendors! I figure if I order from 3-4 different vendors at once, somebody will eventually arrive, and work.
I call it: Redundant Array of Indepedent Droids (sales droids, that is)
IBM: got me a quote. But delivery will be 30 days, and I don't totally believe them. But so far this is the most promising option.
HP: their "systems are down", they'll have to call me back to get me pricing.
Dell: salesdroid one didn't know enough to answer simple questions. technical salesdroid didn't call me back. i can't reach either of them.
PogoLinux: just don't quite have what we're looking for
PenguinComputing: got a quote, but need to tweak it. need to find out about availability.
In conclusion, 64-bit servers are impossible to purchase, and my job sucks.
P.S. No disrespect to Silicon Mechanics (our regular vendor)... I asked for something they didn't quite have yet, they're trying their best, and their vendors are fucking them too... *sigh*