see shannon's posting about using sep in counting mode...

The article is here:

http://software.intel.com/en-us/articles/how-do-i-measure-memory-bandwidth-on-an-intel-core-i7-or-xeon-5500-series-platform-using-intel-vtune-performance-analyzer/

if you want more than those 2
edit your pmn.xml file and add the follwing events...but save the original..you are on your own
:-)
do not ask for help

d

0x100A0
0x2C
0x7
0x50
0x40000
0
35,36,37,38,39,40,41,42
UNC_IMC_NORMAL_READS.ANY
IMC normal read requests
pmn.chm
100000
0
1
A0


0x100A3
0x2F
0x7
0x50
0x40000
0
35,36,37,38,39,40,41,42
UNC_IMC_WRITES.FULL.ANY
IMC full cache line writes
pmn.chm
100000
0
1
A0


0x100B3
0x20
0x1
0x50
0x20000
0
35,36,37,38,39,40,41,42
UNC_QHL_REQUESTS.IOH_READS
Quickpath Home Logic IOH read requests
pmn.chm
100000
0
1
A0


0x100B3
0x20
0x2
0x50
0x20000
0
35,36,37,38,39,40,41,42
UNC_QHL_REQUESTS.IOH_WRITES
Quickpath Home Logic IOH write requests
pmn.chm
100000
0
1
A0


0x100B3
0x20
0x10
0x50
0x20000
0
35,36,37,38,39,40,41,42
UNC_QHL_REQUESTS.LOCAL_READS
Quickpath Home Logic local read requests
pmn.chm
100000
0
1
A0


0x100B3
0x20
0x20
0x50
0x20000
0
35,36,37,38,39,40,41,42
UNC_QHL_REQUESTS.LOCAL_WRITES
Quickpath Home Logic local write requests
pmn.chm
100000
0
1
A0


0x100B3
0x20
0x4
0x50
0x20000
0
35,36,37,38,39,40,41,42
UNC_QHL_REQUESTS.REMOTE_READS
Quickpath Home Logic remote read requests
pmn.chm
100000
0
1
A0


0x100B3
0x20
0x8
0x50
0x20000
0
35,36,37,38,39,40,41,42
UNC_QHL_REQUESTS.REMOTE_WRITES
Quickpath Home Logic remote write requests
pmn.chm
100000
0
1
A0

I guess I should actually answer your question...LOL

on DP systems one is for the remote socket the other for the QPI connection to the chipset/IO hub
on a singel socket only one is connected...which one should be obvious
:-)
(ie..run a test)
d