SATA speeds

  • Thread starter Thread starter Jimmy Neutron
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Jimmy Neutron

I bought a new hd and Sisoft Sandra shows it have only 40 mb/s speed (average 16
ms). What happened to SATA 150 mb/s transfer speeds? The hd is Western Digital
250Gb (should be 8.5 ms access time) and it's connected to a 865Pe/G Neo2
motherboard.

Should I buy a dedicated SATA card?
 
Jimmy said:
I bought a new hd and Sisoft Sandra shows it have only 40 mb/s speed (average 16
ms). What happened to SATA 150 mb/s transfer speeds? The hd is Western Digital
250Gb (should be 8.5 ms access time) and it's connected to a 865Pe/G Neo2
motherboard.
Click to expand...

The 150 mb/s applies only to the transfer rate of the SATA serial
connection. The drive can only transfer data at the rate it passes by
the read head. Most SATA drives still use the same "innards" as the
old PATA.
Should I buy a dedicated SATA card?
Click to expand...

Won't help. A higher RPM drive or better data organization on the
platter(s)would be needed to get a higher average transfer rate.
 
Since most of the SATA drives out there use the same internal
engineering of the PATA drives, those drives crash and burn easy. Even
companies like seagate have high failure rates on SATA drives. I work a
hardware support job for a medium size company and see those SATA's
from Maxtor and WD fail left and right. Even to the point where they
have had to implement a company wide network backup system until we can
get reliable drives from Dell. All I can say is DON'T GO SATA YET!
These drives run too fast and hot for their own good.
 
Since most of the SATA drives out there use the same internal
engineering of the PATA drives, those drives crash and burn easy. Even
companies like seagate have high failure rates on SATA drives. I work a
hardware support job for a medium size company and see those SATA's
from Maxtor and WD fail left and right. Even to the point where they
have had to implement a company wide network backup system until we can
get reliable drives from Dell. All I can say is DON'T GO SATA YET!
These drives run too fast and hot for their own good.
Click to expand...

Actually it's always been prudent to have a company-wide
network backup system. I would wonder if you're facing more
variables, perhaps generic PSU in conjunction with the
ever-escalating current requirements of more modern systems.
 
madscientist said:
Since most of the SATA drives out there use the same internal
engineering of the PATA drives, those drives crash and burn easy.
Click to expand...

If they're the same internally wouldn't they have the same failure rate as
PATA?
Even
companies like seagate have high failure rates on SATA drives. I work a
hardware support job for a medium size company and see those SATA's
from Maxtor and WD fail left and right. Even to the point where they
have had to implement a company wide network backup system until we can
get reliable drives from Dell. All I can say is DON'T GO SATA YET!
These drives run too fast and hot for their own good.
Click to expand...

Calm down, there are millions of people running SATA drives with no
problems.
 
In message <[email protected]> "Derek Baker"
If they're the same internally wouldn't they have the same failure rate as
PATA?
Click to expand...

Lets not go bringing logic into the equation, 'eh?
Calm down, there are millions of people running SATA drives with no
problems.
Click to expand...

And many of us even bother to adequately cool our systems, and know to
backup critical information preemptively too.
 
SATA rated transfer speeds of 150 mbps are PEAK possible ratings. They are
rarely achieved in the real world, and your numbers sound more typical. A
dedicated SATA card will NOT increase the transfer speed of your harddrive.
 
Jimmy Neutron said:
I bought a new hd and Sisoft Sandra shows it have only 40 mb/s speed
(average 16
ms). What happened to SATA 150 mb/s transfer speeds? The hd is Western
Digital
250Gb (should be 8.5 ms access time) and it's connected to a 865Pe/G Neo2
motherboard.
Click to expand...

You don't need another card - 40MB/s is the fastest transfer your hard disk
can physically do. The 150MB/s figure is the maximum throughput that the
SATA bus can handle. EIDE can handle up to 133MB/s, but the hard disk
technology (not the bus) is still the limiting factor for now. SATA is just
future proofing at the moment and it can only transfer data 13% faster than
EIDE!
 
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