Just wanted to drop in and leave some results from my systems:
Dual Intel Xeon E5310 (8 cores total):Windows Burstcoin plot generator V1.15
Creating plots for nonces 0 to 9600 (2 GB) using 960 MB memory and 8 threads with async writing - using SSE4 codepath
Setting priority class 'below normal'.
100 Percent done. Average 3624 nonces/minute.
Finished plotting.
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2b96345e9dff2fa2fe2c6e995f8ed091ae970a44 plots\1_0_9600_1920
        Codename                Clovertown
        Codename                Clovertown
        Specification           Intel(R) Xeon(R) CPU           E5310  @ 1.60GHz
        Specification           Intel(R) Xeon(R) CPU           E5310  @ 1.60GHz
        Instructions sets       MMX, SSE, SSE2, SSE3, SSSE3, EM64T, VT-x
        Instructions sets       MMX, SSE, SSE2, SSE3, SSSE3, EM64T, VT-x
AMD Phenom II X4 965 (4 cores total):Windows Burstcoin plot generator V1.15
Creating plots for nonces 0 to 9600 (2 GB) using 960 MB memory and 4 threads with async writing - using SSE4 codepath
Setting priority class 'below normal'.
100 Percent done. Average 1955 nonces/minute.
Finished plotting.
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2b96345e9dff2fa2fe2c6e995f8ed091ae970a44 plots\1_0_9600_1920
        Codename
        Specification           AMD Phenom(tm) II X4 965 Processor
        Instructions sets       MMX (+), 3DNow! (+), SSE, SSE2, SSE3, SSE4A, x86-64, AMD-V