why is apple using slower hard drives on there computers

[fmlouder]

so i have a macbook pro 2010 and recently i came across this
Vendor: Intel
Product: 5 Series Chipset
Link Speed: 3 Gigabit
Negotiated Link Speed: 1.5 Gigabit
Description: AHCI Version 1.30 Supported

does this mean the internal hard drive can only support 1.5 gbps ?
so am i forced to upgrade the hard drive or something to get the full 3 gbps seems like the newer macbook's are also having the same problem they have the new sata port which are 6 gbps but the negotiated is still 3gbps i kinda feel ripped off betrayed that apple would put low speed drives into them unless they did this for a reason to make battery life better

[krosis]

I'm not sure about the exact reason behind it (by design, hardware problem, or software problem), but I can tell you it is not a serious problem. 1.5Gb/s is still over 150 MBytes/s, which is generally faster than the physical transfer speed of non-ssd hard drives.

[raduga]

For a laptop, I'd be more concerned about power consumption, heat and noise than I/O speed, too.

[fmlouder]

yea i guess i wonder what would have happened if i got the 7200rpm drive for 50 bucks more

[fmlouder]

its not a fix its hardware either way I'm trying to figure out if that seagate hybrid would be a good upgrade might pick up a ram upgrade as well i keep hearing that my rigg can support the 1333 mhz ram? any one know anything about that i keep seeing daily deals on new egg 8 gigs for 30 bucks