You have to pay in mind not every SSD (Even with same speeds) will boot the same.
Mine for example (Samsung Evo 840 250GB) takes about 7 seconds.
Some's takes only half of that, then again someone else's takes 10.
It is like GPU/CPU silicon lottery. Some people can overclock crazy high, others cannot even with everything being absolutely the same.
If you have around 10s boot time it is an improvement. If not in boot then everywhere else. If you're not satisfied with the result do as the guys above me said.
Disable unnecessary programs at boot. Delete the programs that you don't use. Other than that enjoy the wonders of SSD.
Asus Rog G750JZ
Screen: 1920x1080 17.3'
CPU: Intel® Core™ i7-4700HQ (3.4Ghz @ -70mV)
GPU: GeForce GTX 880M 4GB (OC +125Mhz Core, +600Mhz Memory @ 1.062V)
RAM: Samsung 32GB 1600MHz
Storage #1: Samsung Evo 840 250GB
Storage #2: Samsung Evo 850 500GB
Storage #3: Seagate Barracuda 2TB
Storage #4: Samsung Evo 128GB MicroSD