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Which is the best dual U1 unit

5+ Year Member

Msg#: 410 posted 7:55 am on May 23, 2006 (gmt 0)

Which is the best low power dual CPU U1 server?



10+ Year Member

Msg#: 410 posted 7:27 pm on May 27, 2006 (gmt 0)

Well, asking for the "best" is really opening up the thread for a huge debate. Concentrating on power usage is a really high priority with the spiraling costs of heat & power management in any size server room or facility. Bigger, faster processors also means more power consumption & heat.

Based on power consumption, system performance, support and quality of manufacturing. Results are based on my personal opinion derived from lab testing database response times for clients.

Installed Options:
Two (2) Dual Core Processors
Gigabit Ethernet

#1 Sun Fire X4100
AMD Dual-Core Opteron 2.6Ghz
Cost, performance, lowest power consumption in the industry and (my favorite) lower fan noise

#2 IBM eServer 326m
AMD Dual Core Opteron 2.60GHz

HP ProLiant DL360 G4p

Dell PowerEdge 1850 (good price)
Dual Core Intel Xeon 2.8GHz

HP ProLiant DL140/DL145 (good price)
Intel Xeon or AMD Opteron


WebmasterWorld Senior Member jtara us a WebmasterWorld Top Contributor of All Time 5+ Year Member

Msg#: 410 posted 4:41 am on May 28, 2006 (gmt 0)

"Low-power dual..." is a oxymoron.

Unfortunately, your best option for dual processors at a reasonably low power is hard to find in 1U form, at least pre-built.

The "consumer"-oriented AMD Athlon X2 chips (Socket 939 and now AM2) are a better proposition power-wise than the Opterons. The Opterons, on the other hand, are better-suited for servers. It's actually difficult to find a single-chip (which is all you need for dual CPU nowadays) Opteron server, though. There are some special lower-power Opterons, but them come at quite a premium, and also take a performance hit.

Even if you want to build your own, server-oriented Socket 939 boards (i.e. with built-in video, optionally built-in SCSI) are few and far between.

If you REALLY want low power, there are a small handfull of boards available that take either Intel or AMD chips that are meant for mobile applications.

If you don't need a speed demon, there are some additional options using alternative chips. (Non-AMD, Non-Intel.) But not dual. Surprisingly, these ARE fairly readily-available in pre-packaged form. Do a search for "short-depth server". There seems to be a niche for these short-depth (typically 14") 1U low-power servers. They can be packed into both the front AND back of a typical enclosed cabinet due to the short depth.

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