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Question about SATA & SATA2

post #1 of 8
Thread Starter 
Hey,
with the risk of looking silly, I am going to ask!it is probably really simple, but I just dont get it! Please, would you explain me what are the main differences between SATA, SATA 2 etc? I asked Google but I couldnt explain this myself.... I am looking for a new HDD and now I got confused. Is it getting better with SATA 2 SATA 3 ? After giving it a look, I found out that SATA2=300 mb/s and SATA=150 mb/s. I was surprised when I noticed that the SATA2 is at the same price as SATA.. I found an HDD 1TB WD SATA2 64 MB and HDD 1TB SATA 6GB/s 32 MB. I wondered at first place because the 1st one has more cache and it is SATA2. What about the gb/s?

What should I be looking for the most when buy an HDD (internal)? Also, WG or Samsung? They are all at the same prices but from your experience, which one is more reliable?

Excuse me if there are more topics about this but I wanted to ask the questions this way! As you can see , I dont really know anything so I would really appreciate it if you explain me.. huh i am not even sure if I asked it right
    
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post #2 of 8
Unless you're running high-end SSDs or RAID configuration, what SATA revision your gear is is basically irrelevant. There are within my knowledge no single HDDs that can fully saturate a SATA 1.5 line...the only single device that will saturate a SATA3.0 line are high end SSDs and RAID.

NO HDD out there is bottlenecked by the bus it is connected to. What slows down HDDs is the buffer-to-disk inside the drive.

Samsung Spinpoint F3 drives are some of the speediest out there and even they peak at sub-140MB/second.
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post #3 of 8
Get a Samsung Spinpoint or a WD Black. I use WD drives and have never had a problem, their RMA process is also good from what I hear.
Get whatever is best price.
post #4 of 8
Thread Starter 
Okay, so http://www.newegg.com/Product/Produc...82E16822152185 would be the best? Does the cache make big difference? Like, is 64MB much better than 32 or not that much?

Thanks!!
    
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post #5 of 8
SATA1 ,2, and 3 are the speed limits of the connection but it doesn't mean that the HD is cabable of those speeds.

Just because a drive has a higher rated interface doesn't mean it can take advantage of it.

The connection has nothing to do with the drive's speed.

The fastest mechanical drives can't come close to maxing a SATA2 connection and connecting a SATA3 interface will make no difference.

Cach size has no impact on drive speed and it's only relevance is "Burst Speed"....much ado about nothing.

Hopefully these easy facts will answer some of your questions and help eliminate some HD fallacies.
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Intel 920 Asus P6T + LSI 9240-4i SATA6GB/s card Nvidia 8800GTS Patroit Viper 6GB of D3-1600 
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post #6 of 8
Thread Starter 
Quote:
Originally Posted by Old Hippie View Post
SATA1 ,2, and 3 are the speed limits of the connection but it doesn't mean that the HD is cabable of those speeds.

Just because a drive has a higher rated interface doesn't mean it can take advantage of it.

The connection has nothing to do with the drive's speed.

The fastest mechanical drives can't come close to maxing a SATA2 connection and connecting a SATA3 interface will make no difference.

Cach size has no impact on drive speed and it's only relevance is "Burst Speed"....much ado about nothing.

Hopefully these easy facts will answer some of your questions and help eliminate some HD fallacies.
Thanks mate! you totally helped me and now I got it ! You made it clear to me!
    
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post #7 of 8
Quote:
Originally Posted by SethCohen View Post
Thanks mate! you totally helped me and now I got it ! You made it clear to me!
I just love it when the light goes "On"!

I'm very glad I could be of assistance.
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My System
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Crucial C300 256GB Benq 1655 W7 Ultimate x64 NEC MultiSync LCD2470WNX 
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post #8 of 8
Quote:
Originally Posted by Skripka View Post
Unless you're running high-end SSDs or RAID configuration, what SATA revision your gear is is basically irrelevant. There are within my knowledge no single HDDs that can fully saturate a SATA 1.5 line...the only single device that will saturate a SATA3.0 line are high end SSDs and RAID.

NO HDD out there is bottlenecked by the bus it is connected to. What slows down HDDs is the buffer-to-disk inside the drive.

Samsung Spinpoint F3 drives are some of the speediest out there and even they peak at sub-140MB/second.
Actually the new Hitachi 7K3000 series tops the sata1 spec in read speeds and write speeds but only marginally.

Shhhhh!
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