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A temporary fix for the excess PCI-E slot power draw for the reference RX 480 cards - Page 4

post #31 of 178
can you at least tell us how much power we `should` be drawing over the 6 pin with the mod ?
post #32 of 178
Quote:
Originally Posted by SanguineDrone View Post

Fixes something that isn't even a problem, hmmm.
The only real problem is the media blowing this way out of proportion.
While I agree with you on that, this isn't the thread for it, the OP is offering assistance for the problem and should be thanked.
My opinion atleast.


+rep OP
 
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post #33 of 178
@The Stilt

As I haven't been taking apart RX 480 ROM much due to lack of flasher, which is solved now smile.gif . I thought I'd see the VOI you've done and noted stock ROM had no VDDC limit, is that correct?
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post #34 of 178
Thread Starter 
That's correct...
A mistake IMO, since I've killed some CPUs accidentally when the limit has not been set.

1.36875V was set for enhanced safety and should be more than enough, even on custom water cooling.
post #35 of 178
I'm amazed stock ROM/MTP had none and yeah agree good addition.

Only today I was viewing EVC tool by Elmor on HWBot, as der8auer video on RX 480 @ 1500 had it, on stock ROM coupled with say that tool or i2c programming of VDDC offset via MSI AB could equal dead GPU.
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post #36 of 178
so moving more of the power load to the 6pin, whats that going to do to your psu?

A good psu costs half of what a 4gig 480 costs and a good motherboard cost the same..

What about the longevity of the product, if amd didnt catch this in testing, just shows someone or some dept completely dropped the ball?


My sapphire rx480 8gig is to be delivered tomorrow. I spoke with the place I ordered it from and they will accept a return and full refund being its unopened.

I'm doubting it and its build quality and I no longer trust amd or their architecture or test procedures..
post #37 of 178
nothing is gonna happen to the psu
most power supply's the 6/8 pin's share the same rail/physical connection anyway
the way AMD has the 6 pin wired is,its capable of well over 150W
post #38 of 178
Thread Starter 
Quote:
Originally Posted by danjal View Post

so moving more of the power load to the 6pin, whats that going to do to your psu?

A good psu costs half of what a 4gig 480 costs and a good motherboard cost the same..

What about the longevity of the product, if amd didnt catch this in testing, just shows someone or some dept completely dropped the ball?


My sapphire rx480 8gig is to be delivered tomorrow. I spoke with the place I ordered it from and they will accept a return and full refund being its unopened.

I'm doubting it and its build quality and I no longer trust amd or their architecture or test procedures..

Even in the worst case scenario, the PCI-E 6-pin connector can handle 177 - 207W of power draw. The worst case scenario being: 2/3 VDD and VSS pins connected on the PCI-E power connector and low grade connectors used in the power cable or in the cable header. Low grade connectors are rated for 8A per contact and the high grade ones are rated for 11A. The ATX specification recommends to use 16AWG wires (12A rated each) for these connectors but allows 18AWG (8.6A rated each) to be used. So at minimum you are looking at 16A at 11.04V - 12.96V.

And when a fully connected high quality connector, paired with 16AWG wires is used you can draw safely at least 265 - 311W from a single 6-pin PCI-E connector. If your PSU can deliver, that is.
post #39 of 178
Quote:
Originally Posted by iTurn View Post

That's just it though, the OP basically just called you and asked if your refrigerator is running, then offered you a net to catch it with.
While I agree with you on that, this isn't the thread for it, the OP is offering assistance for the problem and should be thanked.
My opinion atleast.


+rep OP
post #40 of 178
@The Stilt
Does this fix work for multiple card rigs? Lets say for 6 gpus.
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