Re: HD replacement
Hi, Vovan.
There are two speed factors to consider. The first is the speed of the
drive itself. You've already tackled that; your 10,000 RPM disk should
serve up reads and perform writes much faster than the 7200 RPM. Of course,
there are other specs to consider, but usually bigger and newer drives are
faster, too.
The other factor is getting the data to/from the drive - and that's where
the cabling matters.
For years, the standard PC configuration had 2 IDE (also known as ATA or
PATA - for parallel) channels, each with two connectors (dubbed Master and
Slave). If one channel had a fast drive and a slow drive on its connectors,
the speed of that channel might be limited to the slowest device on it.
This was most noticeable when a relatively slow optical (CD or DVD) drive
was added to the same channel as a fast hard drive. I'm not sure if that
restriction still applies.
Nowadays, most motherboards have multiple SATA (S for Serial) connectors,
and each connector serves only a single drive. So one SATA channel is not
affected by the speed of other channels. The first SATA channels could
handle 150 MB per second but nearly all SATA today is SATA II, which handles
300 MB/s. Your drives are probably both SATA II. But, even if it is SATA
I, it won't slow down your big, fast drive on the other SATA channel.
(My system now has 4 SATA II drives, each on its own dedicated cable, plus 2
DVD burners, each as master on one of the two IDE channels.)
Don't know whether you have IDE/PATA drives or SATA drives? Look at the
cables and connectors, especially the data cables. IDE uses the wide (well
over 1") flat ribbon cables with 40 or 88 wires. SATA has a narrow (about
1/2") data cable with only 7 wires. And most SATA drives also have a new
power cable connector, different from the familiar 4-wire connector still
used by most optical drives.
RC
--
R. C. White, CPA
San Marcos, TX
rc@grandecom.net
Microsoft Windows MVP
(Running Windows Live Mail 2008 in Vista Ultimate x64)
"vovan" <v@v.com> wrote in message
news:OYut9klPIHA.5524@TK2MSFTNGP05.phx.gbl...
> How about this part of my question:
> I've heared from somebody that the system works with the speed of the
> slowest HD. Is it true?
>
> vovan
>
>
> "vovan" <v@v.com> wrote in message
> news:uqy1KxfPIHA.4196@TK2MSFTNGP04.phx.gbl...
>>I have 64bit XP Pro with 2 HD - 80GB, 7200 RPM. RAM - 16GB.
>> I'd like to replace my drives.
>> If I replace the first one with 150GB, 10000 RPM, and the second one with
>> 1TB, 7200 RPM, will I get a better speed?
>> I've heared from somebody that the system works with the speed of the
>> slowest HD. Is it true?
>> If so, I need to replace the second HD with 10000 RPM too, but all of
>> them I saw have sizes not big enough for me.
>>
>> Thank you
>> vovan