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Potential Limitations of PCI-E 6-Pin to 8-Pin adapters - Page 2

post #11 of 48
The title implies that there is a danger in using 6 pin to 8 pin adapters, however the OP is about being careful when using multiple pcie adapters from the same 12V rail that isn't rated for enough amps. A clearer title will avoid confusion.
 
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post #12 of 48
That is why I love using a single rail PSU.
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post #13 of 48
Thread Starter 
Quote:
Originally Posted by mdatmo;12750153 
The title implies that there is a danger in using 6 pin to 8 pin adapters, however the OP is about being careful when using multiple pcie adapters from the same 12V rail that isn't rated for enough amps. A clearer title will avoid confusion.

Title changed.

I have come across quite a few powersupplys that don't offer any information on rail distribution. Which is why I started a thread on the matter, I thought I was helping, but obviously not.

EPIC FAIL. tongue.gif
post #14 of 48
Quote:
Originally Posted by xtremetechuk;12749957 
Yes, but without knowing rail distribution, you may use both PCI-E 6-Pin connections from the same rail, and both PCI-E 6-Pin connections would share the 192W.

You would also need to take into account that the combined wattage on the +12V rails is 504W, so you may not even get 192W from the +12V3 rail.

Did you even read my first post tongue.gif

that is why you have protections on a psu to avoid over drawing a single rail
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post #15 of 48
Thread Starter 
Quote:
Originally Posted by obsidian86;12750996 
that is why you have protections on a psu to avoid over drawing a single rail

I agree, however you may be clueless to why the powersupply shuts down. And may mistake the powersupply for being faulty or insufficient, when in actual fact the cause was insufficient amperage to the PCI-E adapter.
post #16 of 48
this is not noobville its overclock.net
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post #17 of 48
Thread Starter 
Quote:
Originally Posted by obsidian86;12753407 
this is not noobville its overclock.net

Yes, and maybe if you read my first post correctly, you wouldn't of made posts trying to correct me, when clearly you were the ignorant one.

I was merely trying help uninformed users of the potential risks when using PCI-E 6-Pin to 8-Pin adapters. I was never expecting immature and vulgar posts from an OCN member that has 120+ REP.

I suggest you grow up.
post #18 of 48
Quote:
Originally Posted by xtremetechuk;12753950 
Yes, and maybe if you read my first post correctly, you wouldn't of made posts trying to correct me, when clearly you were the ignorant one.

I was merely trying help uninformed users of the potential risks when using PCI-E 6-Pin to 8-Pin adapters. I was never expecting immature and vulgar posts from an OCN member that has 120+ REP.

I suggest you grow up.
This is also the reason you don't load all the PCI connectors on one rail if you are truly using a multi-rail desgin.Most "multi" rails are really one rail in essence.
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post #19 of 48
You know, I am still trying to figure out what the risks are?
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post #20 of 48
Thread Starter 
Quote:
Originally Posted by Arctucas;12754009 
You know, I am still trying to figure out what the risks are?

Example -
On multi-rail powersupplys there maybe two PCI-E 6-Pin connections on a single 12V rail, which may only be rated for 15A (180W). While this is perfectly fine for two PCI-E 6-Pin connections (75W+75W). You may not be able to use PCI-E 6-Pin to 8-Pin adapters, as this would exceed the maximum wattage on the 12V 15A rail (150W+150W).
Edited by xtremetechuk - 3/16/11 at 9:29am
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