Most energy-saving CPU für socket 478?

[Guest]

Hello.

I run a Tyan Tomcat i7210 with a P4 2.8GHz CPU (Northwood). I don't need much computing power, because I plan to run it as a Router, NAS, etc. and for that the power consumption is too high.

I looked for alternatives but depending on the compatibily list my current CPU seems to be the most energy-saving CPU. :/
Link: tyan.com/support_download_cpu2.aspx?socketid=2 (http://.www removed for guest restrictions)

Is there a chance to run a more energy-saving CPU as those which are listet in the link above?

Thanks in advance
Guest

[gshv]

Pentium 4 2.4 GHz has lower power than the 2.8 GHz. Celeron D 2.26 may have even lower power.

Gennadiy

[Wizzard1]

Go with a Mobile Pentium-4 M 35W all the way.

I would not recommend a Celeron M- MArginal power savings with significant less performance. There are programs available which can alter the multiplier down in Windows, during idle use.

If possible, get a slow one, and undervolt it, as low at 1.1V for reasonable power savings.

I would recommend a MP4M 2.4Ghz, should be at a reasonable price, or get a slower one and save a few bucks

[Guest]

I thought a Pentium M isn't compatible with boards, designed for common P4 CPUs. Or why has ASUS offered special adapter kits for their P4 motherboards? Of course, it would be nice.

@gshv
Well, I think my question wasn't precisely enough. Sure, a 2.4GHz P4 has a less power consumption but my primary thought was to use a CPU which isn't listed in the compatiblity list but could/should also work.

Regards and thanks for the replies so far.
Guest

[gshv]

Your motherboard doesn't list any 400 MHz FSB processors as supported, so Pentium 4-M may be unsupported. If the ASUS CT-479 adapter works on your system then it would be the best solution for you, and certainly much better than Pentium 4-M.

Gennadiy

[Wizzard1]

If the board doesnt list support for 400MHz FSB...

But I know Intel designed the Mobile P4-M to be universally compatable with desktop processors, minus the heatspreader

Honestly, I cant see any system supporting 533/800MHz FSB and not 400MHz.

And, Mobile P4-M are Northwood core.

[gshv]

[Wizzard1]

The Intel SE7210TP1-E does.

http://www.intel.com/support/motherboards/server/se7210tp1-e/sb/cs-008322.htm

[gshv]

[Wizzard1]

You made me get out the datasheets

Good find on those processors- The most power-savings will also be the cheapest!

[Guest]

I've never tested it but a Pentium-M shouldn't fit on a Socket 478 maiboard for desktop PCs although they are often discribed with "for Soket 468" in some advertisements. Afaik only the pin count ist equal, even 478. But they don't fit neither mechanical nor electrical on Socket 478 desktop mainboards without any adapter (like ASUS provides).

I'm really confused...

[gshv]

Mobile Pentium 4-M is different from Pentium M. Pentium 4-M is in 478-pin package, the same one as desktop Pentium 4 processors, will fit into socket 478, but doesn't have an integrated heatspreader. Pentium 4-M has a few low-power features that are not present in desktop Pentium 4 processors.

Gennadiy