Choppy audio after CPU swap from Core2Quad to Xeon 1.6.2.10

I put the hard drives from my old server into a new server and booted up.
Everything worked great after some LAN drivers were installed.
Now though, faxes don’t go through due to bad audio quality.
I can just barely detect an audio issue during a normal voice call.
I’m running asterisk 1.6.2.10
Neither box has a time source. It’s SIP and IAX2 end-to-end.
Old box was Core2Quad 2.4GHz 4GB ram 4GB swap and RAID 5

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel® Core™2 Quad CPU Q6600 @ 2.40GHz
stepping : 11
cpu MHz : 2399.978
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
bogomips : 4799.95
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

New box is Xeon E5-2609 2.4GHz 8GB ram 16GB swap and RAID 5

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 45
model name : Intel® Xeon® CPU E5-2609 0 @ 2.40GHz
stepping : 7
cpu MHz : 2400.109
cache size : 10240 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx pdpe1gb rdtscp lm constant_tsc nonstop_tsc arat pni monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr sse4_1 sse4_2 popcnt lahf_lm
bogomips : 4800.21
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management: [8]

I don’t have the luxury of reinstalling asterisk at this point. I must get the existing install working.
Do I have to recompile codecs for the new CPU?
What could be the issue?
Thanks in advance!

I am pretty sure there is a Xeon Specific Kernel for the CentOS/Redhat Distributions…I would assume the same for Debian/Lenny, BSD’s etc.

You may be able to find the correct kernel with a ‘yum update’. You may also need to install it manually.