CTPCI needs 3v3 PCI cards

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wongck
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CTPCI needs 3v3 PCI cards

Postby wongck » Wed Mar 17, 2010 12:31 pm

In case anyone not heard about the CTPCI needing to use 3.3V PCI cards.
PCI cards that are 5.0V cannot be used. :(
My graphics and network card are 5.0V :cry: :cry:
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Re: CTPCI needs 3v3 PCI cards

Postby alexh » Wed Mar 17, 2010 1:27 pm

Are the majority of PCI cards manufactured towards the end of PCI (i.e. now) all 3.3v?

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Re: CTPCI needs 3v3 PCI cards

Postby wongck » Wed Mar 17, 2010 1:51 pm

Seems to be that newer ones are 3.3v, because it's also faster speed.
The ATI PCI are old designs so the one I choosen was a 5.0V PCI.
Bad choice - suppose to be biggest bang for the buck.
Biggest bang it is.... in the wrong direction :lol:
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Re: CTPCI needs 3v3 PCI cards

Postby [ProToS] » Wed Mar 17, 2010 4:41 pm

From Rodolphe on DHS BBS

Code: Select all

There is a problem about how you are understanding the PCI slots !
The PCI slots is 3.3v wich mean that he use 3.3v on is IO pins... But +5V is available for power pins, sure!

An universal PCI board (with 2 lock key position (you know the missing line PCB in the range of pins) can run on +3.3V ANd on +5V IO PCI connector !
The IO pins of the PCI chip will accept the 2 voltage...
So, a PCI 3.3V connector can accept 3.3V cards and universal cards !
Sure, it cannot accept +5V IO card (and the lock position is not good to avoid accident !)
AGAIN to resume : if your PCI board has 2 lock key positions, it is ok with CTPCI !
I'm very surprised if some PCI 5V cards still existing (sold)...in 2010... It is several years ago I see only UNIVERSAL boards on market.
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Re: CTPCI needs 3v3 PCI cards

Postby wongck » Thu Mar 18, 2010 11:50 am

yeap saw that.
But did not really understand some parts of it...

Man... he is surprise that 5V cards are available?? I purchased one which was brand new :cry:
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Re: CTPCI needs 3v3 PCI cards

Postby [ProToS] » Thu Mar 18, 2010 1:46 pm

have you see the new post on DHS BBS with this link
http://en.wikipedia.org/wiki/File:PCI_Keying.png
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Re: CTPCI needs 3v3 PCI cards

Postby Indus » Thu Mar 18, 2010 1:48 pm

A nice picture to see the difference between 3.3v and 5v PCI devices
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Re: CTPCI needs 3v3 PCI cards

Postby Indus » Thu Mar 18, 2010 1:52 pm

[ProToS] wrote:have you see the new post on DHS BBS with this link
http://en.wikipedia.org/wiki/File:PCI_Keying.png

Your are so fast. I posted this link on DHS BBS few minutes ago 8O
The link goes to the picture I uploaded on this thread :wink:
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Re: CTPCI needs 3v3 PCI cards

Postby wongck » Thu Mar 18, 2010 1:56 pm

[ProToS] wrote:have you see the new post on DHS BBS with this link
http://en.wikipedia.org/wiki/File:PCI_Keying.png


No I have not seen the new post.
But I know the difference between 3.3 & 5V cards. :mrgreen:

I mean the part of Rodolphe post that states the IO pins accepts both 3.3v & 5V but the slot don't allows it.
So if the chips are able to support it why lame it by forcing us to use 3.3V card + universal card only?
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Re: CTPCI needs 3v3 PCI cards

Postby wongck » Fri Mar 19, 2010 3:44 pm

From Rodolphe on DHS BBS

Code: Select all

Try the boards with 3.3V IO mode !
Make the second key !
What is the risk ?? I do not see one !
The radeon chip is able to run in a 3.3v environnement and some boards confirm that !


:lol: where's my hacksaw?
worth a go if it does not kill the CTPCI.
My Stuff: FB/Falcon CT63 CTPCI ATI RTL8139 USB 512MB 30GB HDD CF HxC_SD/ TT030 68882 4+32MB 520MB Nova/ 520STFM 4MB Tos206 SCSI
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Re: CTPCI needs 3v3 PCI cards

Postby wongck » Sun Mar 21, 2010 11:44 am

Damned I wasted so much money :evil:
My Stuff: FB/Falcon CT63 CTPCI ATI RTL8139 USB 512MB 30GB HDD CF HxC_SD/ TT030 68882 4+32MB 520MB Nova/ 520STFM 4MB Tos206 SCSI
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Re: CTPCI needs 3v3 PCI cards

Postby alexh » Sun Mar 21, 2010 11:48 am

If you bought them new from a shop then just return them.

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Re: CTPCI needs 3v3 PCI cards

Postby wongck » Mon Mar 22, 2010 11:33 am

Got it so long ago, can't return it :roll:
My Stuff: FB/Falcon CT63 CTPCI ATI RTL8139 USB 512MB 30GB HDD CF HxC_SD/ TT030 68882 4+32MB 520MB Nova/ 520STFM 4MB Tos206 SCSI
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