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post #621 of 4145
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Originally Posted by GecKoTDF View Post

You must put your nick name and all that in the first post, its a manual register and automatic figure in the chart.-

Thank you. I'll do it tonight.
post #622 of 4145
I think the whole out of spec pcie connector power draw problem being dangerous and a fire hazard is overblown by media. I'm running 2x Reference RX 480s overclocked to 1350MHz while overvolted and my 24-pin never felt warm even after running Heaven for hours to test my overclock. I can compare it to my radiator hoses of the H80i and it definitely does not even feel warm so I think it should be just fine and even more so for single card users.
Edited by Awesomeguy10578 - 8/17/16 at 5:48am
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post #623 of 4145
A month ago I purposely took mine to the failure point and my 24pin was only ~5 degrees over ambient. Someone else was saying I should be concerned about my 24pin. It's my motherboard's pci-express power distribution that gets too hot. 24pin is handling it. There are 3 12volt leads in a 24pin connector but only 2 get used for pci express I think. So we are way out of spec on the 24pin but they seem to be fine. That's not the point of failure. It also could be my motherboard is more susceptible to failure after burning at 1.32volts.

My infrared temp gun will be here today to test, but I touch says my 24pin is staying about at ambient at 1.233v.
Edited by greytoad - 8/17/16 at 6:17am
post #624 of 4145
Quote:
Originally Posted by Awesomeguy10578 View Post

I think the whole out of spec pcie connector power draw problem being dangerous and a fire hazard is overblown by media. I'm running 2x Reference RX 480s overclocked to 1350MHz while overvolted and my 24-pin never felt warm even after running Heaven for hours to test my overclock. I can compare it to my radiator hoses of the H80i and it definitely does not even feel warm so I think it should be just fine and even more so for single card users.
You don't say lol

Gamersnexus has been running a reference 480 for a month or something on some cheapo old mobo without issues. People overblow it because they do not understand that out of spec does not necessarily mean instant kill. There were way worse power draw from mobo cards before and it was a nonissue.

http://www.gamersnexus.net/news-pc/2552-ask-gn-25-fast-sync-rx-480-endurance-and-more
post #625 of 4145
Quote:
Originally Posted by Awesomeguy10578 View Post

I think the whole out of spec pcie connector power draw problem being dangerous and a fire hazard is overblown by media. I'm running 2x Reference RX 480s overclocked to 1350MHz while overvolted and my 24-pin never felt warm even after running Heaven for hours to test my overclock. I can compare it to my radiator hoses of the H80i and it definitely does not even feel warm so I think it should be just fine and even more so for single card users.

I believe the problem is going to be the slot/card edge connection, not the 24 pin connection. Regardless, what I said lines up with peoples experiences. 1.3v or above is where you will start damaging something on a reference card. ~1.25v can damage things if a connector is not 100% due to age or abuse.

Honestly, 1350 is not much of an OC as far as extra power usage. I can hold ~1350 on an RX 470 (120w) which has less power headroom than an RX 480 (150w). ~1400 seems to be where power limitations start for most people because wattage goes up VERY quickly from there.
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post #626 of 4145
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Originally Posted by greytoad View Post

A month ago I purposely took mine to the failure point and my 24pin was only ~5 degrees over ambient. Someone else was saying I should be concerned about my 24pin. It's my motherboard's pci-express power distribution that gets too hot. 24pin is handling it. There are 3 12volt leads in a 24pin connector but only 2 get used for pci express I think. So we are way out of spec on the 24pin but they seem to be fine. That's not the point of failure. It also could be my motherboard is more susceptible to failure after burning at 1.32volts.

My infrared temp gun will be here today to test, but I touch says my 24pin is staying about at ambient at 1.233v.

The 24-pin can supply about 120W on the +12V rail (albeit, technically, +12V is not a supply, but a drain, because electrons are negative and flow to the positive... which is why more grounds can provide more power thumb.gif).

However, that's with the 18ga standard-minimum wire diameter, 16ga is more uncommon, and can handle double the power - 240W (20A @ 12VDC).

The length of the wire is a major factor, as well, but these numbers are all for short (~12") runs, which is what you find in ATX connectors.
post #627 of 4145
Quote:
Originally Posted by greytoad View Post

A month ago I purposely took mine to the failure point and my 24pin was only ~5 degrees over ambient. Someone else was saying I should be concerned about my 24pin. It's my motherboard's pci-express power distribution that gets too hot. 24pin is handling it. There are 3 12volt leads in a 24pin connector but only 2 get used for pci express I think. So we are way out of spec on the 24pin but they seem to be fine. That's not the point of failure. It also could be my motherboard is more susceptible to failure after burning at 1.32volts.

My infrared temp gun will be here today to test, but I touch says my 24pin is staying about at ambient at 1.233v.

Hmm I see...so where is your failure point exactly? The motherboard traces or the pcie slot?
Quote:
Originally Posted by KarathKasun View Post

I believe the problem is going to be the slot/card edge connection, not the 24 pin connection. Regardless, what I said lines up with peoples experiences. 1.3v or above is where you will start damaging something on a reference card. ~1.25v can damage things if a connector is not 100% due to age or abuse.

Honestly, 1350 is not much of an OC as far as extra power usage. I can hold ~1350 on an RX 470 (120w) which has less power headroom than an RX 480 (150w). ~1400 seems to be where power limitations start for most people because wattage goes up VERY quickly from there.

Oh so then technically I should be fine. Because I was thinking my two cards draw a lot of power from the traces and 24-pin combined so I'm pointing out that those couldn't be problematic on single card users. Then again I'm not running these on some cheapo run of the mill bargain bin motherboard either. 1350MHz is modest yes. I could run it at 1400MHz but thermals would be too hot for the reference blower at those settings.
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post #628 of 4145
There's a small chip on my motherboard with a tiny bit of discoloration. I need a magnifying glass to see the discoloration. I'm sure it's involved with pci express power distribution. Slot is fine. 24pin is fine. Putting a heatsink on the chip might help. I would like to replace my power connectors with 16awg just to be safe. Sometime in the next month.

I just had a minor scare here. I was getting rendering exception-- file not found errors in batman arhkham knight that seemed better if I took my cpu back to 4.0 ghz and I was sure it was a cache coherency issue, but it was just my dumb error. I'd forgotten to reapply my voltage offset on my video card when I went back to stock for some testing. I'm surprised I got as far as I did in Batman with 113mv lower voltage to my gpu. lol.
post #629 of 4145
Quote:
Originally Posted by greytoad View Post

There's a small chip on my motherboard with a tiny bit of discoloration. I need a magnifying glass to see the discoloration. I'm sure it's involved with pci express power distribution. Slot is fine. 24pin is fine. Putting a heatsink on the chip might help. I would like to replace my power connectors with 16awg just to be safe. Sometime in the next month.

I just had a minor scare here. I was getting rendering exception-- file not found errors in batman arhkham knight that seemed better if I took my cpu back to 4.0 ghz and I was sure it was a cache coherency issue, but it was just my dumb error. I'd forgotten to reapply my voltage offset on my video card when I went back to stock for some testing. I'm surprised I got as far as I did in Batman with 113mv lower voltage to my gpu. lol.

I saw your vrm temps. You using a full block? my 290 at 1200 core and 1500 memory oc does not see 50. Either your ambient is very high, flow is low or you don't have enuf rad space.
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post #630 of 4145
I just need to reseat the block and replace the thermal pads and paste. I have 3 rads a 240 a 360 and a 420. Flow is fine too. The contact on the vrms is a little off on the thermal pads. The impression wasn't even when I checked fit. I might have a standoff not completely tightened down causing it to be slightly off.

edit: water temp doesn't move more than a degree or two on load so it's not the rads capacity. VRMs on the card are the least of my worries though. After an hour of valley in a closed room with fans on low they don't get out of the high 60s low 70s. That's good enough for now. It's not worth tearing my loop apart to fix. ambient is about 75 to 80 here. It's summer but I have ac. Closed room it gets 80 Fahrenheit.
Edited by greytoad - 8/17/16 at 10:37am
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