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Article View: comp.sys.ibm.pc.hardware.storage
Article #1095

Re: Is it possible to actually get a 16 MB/sec data transfer rate w/ an EIDE drive?

#1095
From: Picard
Date: Sat, 29 Nov 1997 00:00
82 lines
4623 bytes
If you do not understand the subject, why do you respond.  There is not a
drive in existence capable of sustained 16mb/s transfer...alll UDMA does is
increase the burst rate.....your hard drive speed is dependant on the hard
drive...the rate at which the cache is read is dependent on other factors,
including the type of interface.   This drive will never be faster.  For
that you need a faster drive.....

Because you cannot find SIS udma drivers, therefore the sis chipset does not
support udma?   What a crock, here is a link:
http://web2.airmail.net/ksm/software.htm
and here is another:
http://www.sis.com.tw/html/driver.html

Now here is a link with info about sis chipsets:
http://www.sis.com.tw/html/product.html

You will find that indeed, there are sis chipsets that support UDMA....
now please. if you must draw conclusions without researching the topic
first, keep it to yourself.  You look like such an idiot when you do
that.....

Felix1 wrote in message <347fe15a.3932011@news.mindspring.com>...
>On Fri, 28 Nov 1997 00:50:57 GMT, midigard@aol.com (Midgard) wrote:
>
>>For months I've been listening to my brother boost about how lightning
>>fast his standard EIDE hard drives are.  Claims it all depends the
>>motherboard's controller on how fast a hard drive can get, up to the
>>maximum rated speed for that drive of course.  Right now I'm using a
>>486 VIP green Mainboard (M919) w/ an AMD P75 cpu & have *never* gotten
>
>This model drive is available in TWO DIFFERENT copnfigurations
>1) Mode 3 - Max of 11 MB/sec transfer..
> They were VERY buggy, I have had two replaced already.
>2) Mode 4 replacements
> Again Buggy, this is not one of seagates better drives. It was
>manufactured during the Conner buyout.
>
>>more than 1,870 kb/sec using my Seagate ST-3851A HDD.  But you're
>>always hearing about how these drives are capable of 16 MB/sec data
>>transfer rates.  In a few weeks, I'll be upgrading to  a Socket 7
>>mainboard with either an Intel 166MHZ MMX or AMD K6 166MHz.
>
>Forget it, it is just not worth it to try to keep this drive with
>newer hardware.
>
>Go out and get a 4.3 or larger UDMA drive. They are ALOT faster and
>are Current technology, unlike the 4 year old drive you have.
>
>>But I'd
>>like to keep my present drive & want to know once and for all if it's
>>actually possible to get the maximum rated speed for these "older"
>>EIDE drives?  Is it, in fact, the controller on the motherboard that
>>determines data transfer rates with hard disks?
>Yes it is the controller, but this ALONE does not control transfer
>rate.
>
>1) The BIOS must support UDMA - as it is handled differently than EIDE
>or  ATA-2 drives.
>
>2) The chipset that you are using MUST support it, and you MUST have
>the proper Chipset drivers installed, so that the operating system
>recognizes the chipset properly, and the correct drivers are loaded.
>
> Currently ONLY the Intel TX and VIA chipset support this.
>
>Rumor has it that the Pentium II chipset supports UDMA, but this has
>yet to be proven, as the technology is to new to rate.
>
>Their is a rumor that the SIS chipset supports this, but I don't
>believe it, as I cannot find the UDMA software drivers or Chipset
>drivers.
>
>3) You must have the appropriate software drivers (IDE controller
>drivers, and Chipset drivers)  installed to get MAXIMIUM transfer
>rate. I use the Tritones UDMA drivers with MUCH success in all 16 of
>my machines, both at home and at work. It has problems with certain
>older IDE devices (such as Sony CD-ROM's) but with most newer stuff it
>works OK.
>
>
>
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From: "Picard" <jsmith@company.com>
Subject: Re: Is it possible to actually get a 16 MB/sec data transfer rate w/ an EIDE drive?
Date: 1997/11/29
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