Installing new HD and SATA

[MacBH928]

Ok, I want to upgrade my HD I got a 160GB original in my late 2008 macbook.
I want to buy the Black Scorpio, but what confuses me is that there are 2 options:
1) 500GB SATA II - $100
2)750 Sata 3 GB-$180

What is this SATA 3 and SATA II stuff, and should I be worried? Why the huge price difference. There is a 320GB one and it has the price of the 500GB HD except its SATA3

 

[JonnyBlaze]

See next post!

 

[simsaladimbamba]

S-ATA is the interface, that the computer uses to connect a storage device to itself:

• S-ATA 1.5 Gbps (S-ATA I)
• S-ATA 3.0 Gbps (S-ATA II)
• S-ATA 6.0 Gbps (S-ATA III)

But since HDDs aren't even as fast as S-ATA 1.5 Gbps (S-ATA I), you can safely buy any HDD you want, regardless of what it says what S-ATA interface it has.

Is that understandable?

 

[Bear]

...
But since HDDs aren't even as fast as S-ATA 1.5 Gbps (S-ATA I), you can safely buy any HDD you want, regardless of what it says what S-ATA interface it has.
...

There are other factors that affect the data transfer rate on these drives besides the interface speed. However between the 2 disks you're looking at (Scorpio Black), the only difference is the capacity and interface type.

...
Why the huge price difference. There is a 320GB one and it has the price of the 500GB HD except its SATA3

My suggestion is that unless you need the disk space,of the 750GB, go with the 500GB drive. And the price difference is because SATA 3 drives are the current technology and SATA II is the previous generation of hardware.

 

[MacBH928]

Thanks a lot its clearer now
Apple support says my Hard Drive is Sata ATA what ever that means,
but my question is if HDD can not transfer faster than Sata I(1.5GB) why make Sata II(3GB) and Sata III(6GB) options?
seems useless?

or are they for flash memory?

 

[AcesHigh87]

Thanks a lot its clearer now
Apple support says my Hard Drive is Sata ATA what ever that means,
but my question is if HDD can not transfer faster than Sata I(1.5GB) why make Sata II(3GB) and Sata III(6GB) options?
seems useless?

or are they for flash memory?

They are used for SSD's which can transfer at higher speeds. Plus improving the speeds of the connector allows for faster drives to be built in the future.

 

[MacBH928]

thanx everyone I guess ill just go with the 500GB Sata II
best price and lots of memory