yes.. as Tony from XtremeSystem Quotes
plus, K10 has totally independent clock control over CPU-NB and CPU core. In the DFI bios you will see the following under CPU features.

CPU DID
CPU FID

CPU DID = multiplier divider
CPU FID = actual multi in HEX

I mapped some common values out for CPU muti.
HEX Multi
00 = 08
01 = 08.5
02 = 09
03 = 09.5
04 = 10
05 = 10.5
06 = 11
07 = 11.5
08 = 12
09 = 12.5
0A = 13
0B = 13.5
0C = 14 ETC

Now we have a CPU DID also, this can be 1,2,4,8,16

things get good from 11 onwards using the 2 4 8 or 16 dividers and ODD ratio's

setting 06 FID and 2 DID will give 5.5, setting 01 FID and DID2 will give 8.25 so yes you can have quarter multipliers also.

Remember DID1 will give FID/1=FID with no adjustment...2 4 8 16 give the special ratio's

Moving to NB FID and DID

NB DID is either 1 or 2
Hex NB Multi
00 = 4
01 = 5
02 = 6
03 = 7
04 = 8
05 = 9
06 = 10
07 = 11
08 = 12
09 = 13
0A = 14
0B = 15
0C = 16
0D = 17 ETC

Again we can DID or divide by 1 or 2...so 07HEX with DID2 will give 5.5 for the NB Multi

So how does this translate, well remember HTT is 200 by default so 01HEX=5X
5X200HTT=1000MHZ
02HEX=6X so 6x200 for 1.2GHZ etc

CPU NB and Link Multipliers are unlocked on ALL CPU's, there are rules though.

HT link speed can NOT exceed NB clock speed, but HT link can be lower than NB core clock.

NB Clock is what decreases L3 cache latency and so improves performance.

Overall HTT speed is dependent on many things, NB core clock, HT link and CPU multi, different configs give differing results..we just need to reasrch the best for now.

copied from Tony post in XtremeSystem
http://www.xtremesystems.org/forums/showthread.php?t=167977