I don't know if this is of any use,
The dell D630 supports the t9500 in some of the later bios's.
The D630 has the same GM965 as my D530.
D630 bios:-
Intel Microcode List ver0.4a
CPUID=6F4 Rev=28 2006/04/17 CRC=30DD8681 Off=1EB13 Size=1000 Plat=0,2,4,5,6,7
CPUID=6F5 Rev=38 2006/07/25 CRC=6333B559 Off=1FB13 Size=1000 Plat=7
CPUID=6F9 Rev=83 2006/09/28 CRC=85B7E1DF Off=20B13 Size=1000 Plat=7
CPUID=6FA Rev=92 2007/03/13 CRC=13ED7841 Off=21B13 Size=1000 Plat=7
CPUID=6FB Rev=B3 2007/03/14 CRC=54AD9B80 Off=22B13 Size=1000 Plat=7
CPUID=6FD Rev=A1 2007/03/13 CRC=020EA887 Off=23B13 Size=1000 Plat=7
CPUID=10661 Rev=33 2007/03/16 CRC=9E99CC48 Off=24B13 Size=1000 Plat=7
CPUID=10671 Rev=106 2007/03/29 CRC=80731B2D Off=25B13 Size=1000 Plat=7
CPUID=10674 Rev=405 2007/07/20 CRC=735D9FE0 Off=26B13 Size=1000 Plat=7
CPUID=10676 Rev=60C 2008/01/19 CRC=FBAC0EED Off=27B13 Size=1000 Plat=7 <---- yay!!!
So it seems supported by Dell.
Here is the bios file I read the microcode list from (ver A19):-
http://www.dell.com/support/home/us/en/0...erId=1J8FX