Solved

Myth or reality ?

Posted on 2003-12-02
5
314 Views
Last Modified: 2010-04-27
I need your opinions on that one... I have been told that higher placed PCI slots on a motherboard can be unstable compared to the ones in the lower part of the motherboard... could that be true ?  I really don't understand why some PCI slots could be more stable than other ones on the same motherboard as the manufacturers never warn about such a thing.... well i'm getting confused here :oP so please give your opinion !  it's worth 500 points you know !? hehe

thanks a lot !
0
Comment
Question by:Wh1sp3r
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
5 Comments
 
LVL 32

Accepted Solution

by:
LucF earned 200 total points
ID: 9859626
Hi Wh1sp3r,

As far as I know this is not true. But the first IDE slot (the highest one) is sometimes sharing resources with the AGP port, this is why most people suggest to keep the first one empty (most of the time it won't give any problems, but just in case use it only when you really need it)

Most newer motherboards don't have this problem anymore.

Greetings,

LucF
0
 
LVL 1

Assisted Solution

by:cybermatrix911
cybermatrix911 earned 150 total points
ID: 9859765
Same here!
when installing PCI cards always leave one pci port in between open,to avoid conflicts
pci ports share irq's but with the new acpi support this shouldn't be a problem anymore
try to find out if ya mainboard has ACPI support
Acpi support usually starts with Pentium 2 motherboards.
ACPI 2.0 is already here and is supported with most new Pentium motherboards
0
 
LVL 18

Assisted Solution

by:chicagoan
chicagoan earned 150 total points
ID: 9859781
It depends on the board. Early PCI boards didn't have bus mastering capability on all slots, and those that did were the lowest numbered slot or slots (closest to the PSU), which may be what you're referring to...

Some boards have multiple PCI busses.

Some boards have some 33Mhz and some 66Mhz slots.

Some have 64 bit PCI-X slots

Some boards have poor bios implementations that cause unmitigated interrupt sharing (please no flames on M$'s wonderful IRQ steering) LucF's comment refers to this situation, though some BIOS's can assign unique IRQ's to each slot and not conflict with the AGP slot.

On newer boards, in sweeping generalities, the more you spend, the more control you'll have - as the silicon doesn't cost as much as the engineering effort. If you're contemplating a new mobo, plan your expansion card needs and research the available boards to find one that has the features you'll need.


0
 

Author Comment

by:Wh1sp3r
ID: 9860207
Thank you very much on all those intersting answers !

So as I can see, I will have to kick somebody's ass ! haha lol
the guy sells computer and he told me about that PCI unstable thing... and as I suspected, I was right !

thanks a lot !

have a nice day !
0
 
LVL 32

Expert Comment

by:LucF
ID: 9860247
You're welcome
0

Featured Post

Enterprise Mobility and BYOD For Dummies

Like “For Dummies” books, you can read this in whatever order you choose and learn about mobility and BYOD; and how to put a competitive mobile infrastructure in place. Developed for SMBs and large enterprises alike, you will find helpful use cases, planning, and implementation.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
allotting specs for college tablet.. 3 78
Thoughts on PC Doctor 11 72
RAM DIMMS - real world different?? 3 64
Recomended server racks 3 22
this article is a guided solution for most of the common server issues in server hardware tasks we are facing in our routine job works. the topics in the following article covered are, 1) dell hardware raidlevel (Perc) 2) adding HDD 3) how t…
In this article we have discussed the manual scenarios to recover data from Windows 10 through some backup and recovery tools which are offered by it.
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

733 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question