THis one looks good:
http://www.newegg.com/Product/...x?Item=N82E16813128042
These are all said to work with Ubuntu:
http://www.newegg.com/Product/...lue=705%3a9908&bop=And
http://www.phoronix.com/scan.p...article&item=727&num=1
Performance:
The ASUS P5N-E SLI is our first complete motherboard review under our new motherboard testing approach with both Linux and Solaris. For testing the motherboard's alternative OS compatibility we had used Fedora 7 Test 4, Ubuntu 7.04 Feisty Fawn, KateOS 3.6 Beta, Solaris Express Build 63 "Nevada", and BeleniX 0.5.1. With all of these operating systems, the ASUS P5N-E SLI had functioned as expected without any show-stopping issues like we had seen with the disk controller on the Intel 965-powered Abit AB9 and other motherboards. The only slight issue we had run into was with LM_Sensors 2.10.3, which had properly reported the CPU core voltage, +3.3V, and other motherboard voltages but had not properly shown the sensors for the +5.00 or +12.00 voltage rails. The fan speeds and temperature probes were also reported properly. For Intel Linux users, the NVIDIA nForce 650i and the ASUS P5N-E SLI worked well under Linux during our compatibility tests.
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http://www.linuxquestions.org/...howthread.php?t=488599
If they both have the intel chipset, either one should work fine. Honestly, the majority of motherboards will work without trouble, and only a few will give you small problems with specific components. The good news is that the more time passes, the less likely those problems are to show up. If you want to make sure, however, search for "(motherboard name) linux trouble" and see if that brings up anything.
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http://www.phoronix.net/forums/showthread.php?t=739
As long as you get a motherboard/CPU that has been out a while (not a P35 chipset, out only a few days) you should be fine.
Would recommend Intel or nVidia chipset, just based on experience....
HTH,
NXIL