Hardware

Hi all,

I just want to compare the below machines, i am not sure how on what basics i should compare, more over i wanted to know how many threads each of these processor can run in parallel.
Please guide me to understand the virtual processor concept on this regards. thanks in advance.

Machine 1 : UltraSPARC-IV+
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No of Physical Processors : 6
No of Virtual Processors : 12
RAM : 48 GB

The physical processor has 2 virtual processors (0 16)
UltraSPARC-IV+ (portid 0 impl 0x19 ver 0x22 clock 1800 MHz)
The physical processor has 2 virtual processors (1 17)
UltraSPARC-IV+ (portid 1 impl 0x19 ver 0x22 clock 1800 MHz)
The physical processor has 2 virtual processors (2 18)
UltraSPARC-IV+ (portid 2 impl 0x19 ver 0x22 clock 1800 MHz)
The physical processor has 2 virtual processors (3 19)
UltraSPARC-IV+ (portid 3 impl 0x19 ver 0x22 clock 1800 MHz)
The physical processor has 2 virtual processors (5 21)
UltraSPARC-IV+ (portid 5 impl 0x19 ver 0x22 clock 1800 MHz)
The physical processor has 2 virtual processors (7 23)
UltraSPARC-IV+ (portid 7 impl 0x19 ver 0x22 clock 1800 MHz)
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Machine 2 : Six-Core AMD Opteron(tm) Processor 2435
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No of Physical Processors : 2
No of Virtual Processors : 12
RAM : 32 GB

psrinfo -vp
The physical processor has 6 virtual processors (0-5)
x86 (chipid 0x0 AuthenticAMD family 16 model 8 step 0 clock 2600 MHz)
Six-Core AMD Opteron(tm) Processor 2435
The physical processor has 6 virtual processors (6-11)
x86 (chipid 0x1 AuthenticAMD family 16 model 8 step 0 clock 2600 MHz)
Six-Core AMD Opteron(tm) Processor 2435