My CPU is this :

OS Name Microsoft Windows Vista Home Premium
Version 6.0.6002 Service Pack 2 Build 6002

System Model SR5 250 NX
System Type X86-based PC

Processor
Intel(R) Pentium(R) Dual CPU E2140 @ 1.60GHz, 1600 Mhz, 2 Core(s), 2 Logical Processor(s)

BIOS Version/Date
American Megatrends Inc. 5.14, 8/10/2007

SMBIOS Version
2.4

+++ VIA INTEL CPU IDENT APP +++

Intel(R) Processor Identification Utility
Version: 4.23.20100812
Operating System: 6.0-6002-Service Pack 2

Number of processors in system: 1
Current processor: #1
Active cores per processor: 2

Processor Name: Intel(R) Pentium(R) CPU E2140 @ 1.60GHz

Type: 0
Family: 6
Model: F
Stepping: D
Revision: A3
Maximum CPUID Level: A

L1 Instruction Cache: 2 x 32 KB
L1 Data Cache: 2 x 32 KB
L2 Cache: 1 MB

Enhanced Intel SpeedStep(R) Technology: Yes
MMX(TM): Yes

Intel(R) SSE: Yes
Intel(R) SSE2: Yes
Intel(R) SSE3: Yes
Intel(R) SSE4: No

Enhanced Halt State: Yes
Execute Disable Bit: Yes

Intel(R) Hyper-Threading Technology: No
Intel(R) 64 Architecture: Yes
Intel(R) Virtualization Technology: No

Expected Processor Frequency: 1.60 GHz
Reported Processor Frequency: 1.60 GHz
Expected System Bus Frequency: 800 MHz
Reported System Bus Frequency: 800 MHz

++++++++++++
Outcome
++++++++++++

Your SSE2 application is running about 120% better than the more bare bones application that was distributed.

Tick rate % (old application) : 0.001 per second (mostly invariant)
Tick rate % (SSE2) : ~0.002 per second, (-/+) 10% variance