5090 wierd AMP measurements.

[RasmusDC]

Now yes i am one of the stupid guys that bought a 5090, sorry, i bought the MRSP card i did not want stuff to burn so bought a RM1000X PSU the new one with the ATX3.1 6x2 600watt cable 

 

The card is a GEM.. no whine, fairly silent surprised since it was a Ventus, but that is Cool.. but i put an ampclamp on it, and this makes me REALLY Scared..

 

it is all over the place 6 pins are at 4amps (4.1-4.2) 6 pins are at 8 Amps (7.9-8.3) none above levels.. but still card is undervolted, but even at 575watt it was not over on any of the cables.. (measured with a HT208D Keiweets ampclamp

 

i tried (i know) to use the 4 pin to 12v hpwr connector, but same result, way less amps, but that was because i have like many more wires from the PSU side. and i could not measure single wires on the GPU side because that connector is sleeved

 

75 degrees at the connector.. but can be touched.. indidual cables are same temps around 50-55 after furmark so no like outliers

 

Torrent Case, with a 7950x running at 120watt ECO mode and of course the undervolted GPU running at 940mv at 2800 mhz right now (yes i know it can do more but just wanted to be safe)

But i am nervous, and yes the card is fully unpacked, but i don´t know if.

 

1. Card that is defective because same behaviour on the 2 type connectors

2. if this is normal, that you only pull full current on 6 pins, when i look at the ASUS diagram on the 5090 astral, it has Pin 1-6 it says it is monitoring on, i am measuring on 12 pins.. and yes i can find 6 pins that are 8+-0.2 amps.

 

Just checked GPU-z and i am pulling 575 watt over the connector, shortly peaked at 600 and nothing is over 9 amps... so is this just how it works?

[Millios]

23 minutes ago, RasmusDC said:

 so bought a RM1000X PSU the new one with the ATX3.1 6x2 600watt cable

Yeaaaah wattage is cutting too close for safety imo which is a whole seperate issue (btw the melting connector is the cards fault not the PSU but having a good PSU can help)

A fairly lowballed build with 32 gigs of ram and 2tb memory thrown in is about 890 to 900w (adding more ram or storage which you might have only worsens it)

With a 5090 and an r9 youre pretty close to the PSU not being able to supply enough wattage(1 power spike and its donezo), which is why ppl when choosing a 5090 go with at least 1200w

(what I used to measure wattage https://pcpartpicker.com/list/MqRCkf)

 

 

[RasmusDC]

2 minutes ago, Millios said:

Yeaaaah wattage is cutting too close for safety imo which is a whole seperate issue (btw the melting connector is the cards fault not the PSU but having a good PSU can help)

A fairly lowballed build with 32 gigs of ram and 2tb memory thrown in is about 890 to 900w (adding more ram or storage which you might have only worsens it)

With a 5090 and an r9 youre pretty close to the PSU not being able to supply enough wattage(1 power spike and its donezo), which is why ppl when choosing a 5090 go with at least 1200w

(what I used to measure wattage https://pcpartpicker.com/list/MqRCkf)

 

 

not what i am talking about, i am nervous about the amp .. divide.. the CPU is tailored to my system, i have currently a systemdraw of 650 watt when i peak CPU and GPU... so i am not really nervous about that part.

 

i looked at a C1200 and C1500, but i kinda trust this more, and wanted the ATX3.1 i run my 7950x in 120watt ECO and undervolt the GPU.. so to be honest, that part is fine.. not worth the 2x the price of the PSU..

[Hinjima]

3 minutes ago, RasmusDC said:

not what i am talking about, i am nervous about the amp .. divide.. the CPU is tailored to my system, i have currently a systemdraw of 650 watt when i peak CPU and GPU... so i am not really nervous about that part.

 

i looked at a C1200 and C1500, but i kinda trust this more, and wanted the ATX3.1 i run my 7950x in 120watt ECO and undervolt the GPU.. so to be honest, that part is fine.. not worth the 2x the price of the PSU..

Power wise its fine.  I have a Corsair RM1000x 2024 model myself and I planned on using it with a 5090... But they do be scary.

But I will skip this generation and look at a 6080/6090 when they launch. They should be on a new node so hopefully power draw is less than 600w.

 

I know a lot about computers but not enough about amps and voltages to give any insight here unfortunately.

 

 

 

[RasmusDC]

8 minutes ago, Hinjima said:

Power wise its fine.  I have a Corsair RM1000x 2024 model myself and I planned on using it with a 5090... But they do be scary.

But I will skip this generation and look at a 6080/6090 when they launch. They should be on a new node so hopefully power draw is less than 600w.

 

I know a lot about computers but not enough about amps and voltages to give any insight here unfortunately.

 

 

 

well the powermeter do .. go to 550 watts when i do all at MAX everything, so yes it is not like.. "nothing" but that is a 32thread cinebench load with a furmark

GPU eats around 350-400watt and the CPU around 100-120 watt and i have 7 fans and 5 SSD´s + 2 ram modules... this will not use more than 600-700watt peak.. YES if i ran the 7950x at 300+watt oc´d i would be f´ed i know.

[Hinjima]

3 minutes ago, RasmusDC said:

well the powermeter do .. go to 840 watts when i do all at MAX everything, so yes it is not like.. "nothing" but that is a 32thread cinebench load with a furmark

Yeah. Im only a gamer so a overclocked 9800X3D pulling 120w so even a 600w GPU is not an issue.

[Millios]

1 minute ago, RasmusDC said:

not what i am talking about

I am well aware of what you are talking

Just pointed out that the card and CPU combo (normally) would draw wattage that could cause damages that were more expensive

2 minutes ago, RasmusDC said:

I looked at a C1200 and C1500, but i kinda trust this more, and wanted the ATX3.1

Yeaah closed your options by a fair bit since other options like this

https://pcpartpicker.com/product/FfFmP6/be-quiet-pure-power-12-m-1200-w-80-gold-certified-fully-modular-atx-power-supply-bn513

is still atx 3.1 more safe (under normal stock power draws and not your "modified" ones) since it has more wattage and is still one of the most reputable brands

All in all if you managed to settle the power draw to a safe level you did good and I wont pry further

 

Anywho, back to the AMPs question

https://wccftech.com/12vhpwr-connector-reaches-150c-on-the-psu-side-when-connected-to-the-rtx-5090/

https://forum.level1techs.com/t/new-5090-12v-hpwr-melted-again/225586/17

The wires (from what I can find) are meant to carry about 8 amps each (or less depending on power settings)

The melting issues and most of the card issues happened cause 1-2 wires pullers >=20 amps (highest record I could find was 22 amps over 1 wire)

 

Really we shouldnt have to worry at all about this but nvidia decided the 8 pin connectors were too much for some stupid reason

[RasmusDC]

8 minutes ago, Hinjima said:

Yeah. Im only a gamer so a overclocked 9800X3D pulling 120w so even a 600w GPU is not an issue.

Yeah .. this was not really what i was asking for, but just checked with a watt meter.. heaven it runs 575-600 watt (there is also a display on the same cord i don´t know how much that uses)

 

furmark + cinebench i shortly saw 800watt then it like just found out it wanted to be at around 740-760ish.. 

 

ran a 3080+this system on a 850watt RM850 from 2013 for many years, that pushed 400watt.. i don´t know.. as long as i am in the 80% peak, why should a psu not actually be able to do this.

[RasmusDC]

2 minutes ago, Millios said:

I am well aware of what you are talking

Just pointed out that the card and CPU combo (normally) would draw wattage that could cause damages that were more expensive

Yeaah closed your options by a fair bit since other options like this

https://pcpartpicker.com/product/FfFmP6/be-quiet-pure-power-12-m-1200-w-80-gold-certified-fully-modular-atx-power-supply-bn513

is still atx 3.1 more safe (under normal stock power draws and not your "modified" ones) since it has more wattage and is still one of the most reputable brands

All in all if you managed to settle the power draw to a safe level you did good and I wont pry further

 

Anywho, back to the AMPs question

https://wccftech.com/12vhpwr-connector-reaches-150c-on-the-psu-side-when-connected-to-the-rtx-5090/

https://forum.level1techs.com/t/new-5090-12v-hpwr-melted-again/225586/17

The wires (from what I can find) are meant to carry about 8 amps each (or less depending on power settings)

The melting issues and most of the card issues happened cause 1-2 wires pullers >=20 amps (highest record I could find was 22 amps over 1 wire)

 

Really we shouldnt have to worry at all about this but nvidia decided the 8 pin connectors were too much for some stupid reason

yeah i have read that.. but if we do the calculations, my card does 575 at PEAK over the connector  (saw 600watt for a short while) undervolted it is a bit over 400. but nevermind that.

 

575 watt at 12V = 47.x amp (lets just say 48) if i divide that by 12 pins i get a fun.. 4 Amp pr pin.. which at peak seems low, when you know the cables is rated at 9.5amp, 

if i look at the ASUS Astral 5090 it measures on pin 1-2-3-4-5-6 not 12 pins, and it shows around 9 amp in most pictures i see. (this is an example)

Okay so i have 12 pins, if i measure everyone then i get = 72 Amps = my card pulls 864watts over the connector, i know the Ventus is a base card, but i am quite sure it cannot do that, and it will be hotter than the 65-70 degrees it is... 

so my guess is 6 pins define the load, and the 6 others, i don´t know what i am measuring there. to be honest, i am not sure anymore, all i know at a 575watt load i have 8.2-8.3 Amps on the biggest wire and that is within spec, i simply cannot get the math to math.. 

 

so i am just trying to figure out, do i have a GPU issue or don´t i.. (am i just measuring on to many wires, and should just be focusing on 6 pins.)

 

[Millios]

Just now, RasmusDC said:

yeah i have read that.. but if we do the calculations, my card does 575 at PEAK over the connector  (saw 600watt for a short while) undervolted it is a bit over 400. but nevermind that.

 

575 watt at 12V = 47.x amp (lets just say 48) if i divide that by 12 pins i get a fun.. 4 Amp pr pin.. which at peak seems low, when you know the cables is rated at 9.5amp, 

if i look at the ASUS Astral 5090 it measures on pin 1-2-3-4-5-6 not 12 pins, and it shows around 9 amp in most pictures i see. (this is an example)

Okay so i have 12 pins, if i measure everyone then i get = 72 Amps = my card pulls 864watts over the connector, i know the Ventus is a base card, but i am quite sure it cannot do that, and it will be hotter than the 65-70 degrees it is... 

so my guess is 6 pins define the load, and the 6 others, i don´t know what i am measuring there. to be honest, i am not sure anymore, all i know at a 575watt load i have 8.2-8.3 Amps on the biggest wire and that is within spec, i simply cannot get the math to math.. 

 

so i am just trying to figure out, do i have a GPU issue or don´t i.. (am i just measuring on to many wires, and should just be focusing on 6 pins.)

 

Fun fact I found out accidentally

Not all pins are meant to be used it seems like ( at least in the same way)

https://www.guru3d.com/story/perpin-sensing-in-gpu-connectors-prototype-12vhpwr-connector-design/

The layout of the 16pin connector is 4 sensors, 6 grounds, 6 currents

[RasmusDC]

3 minutes ago, Millios said:

Fun fact I found out accidentally

Not all pins are meant to be used it seems like ( at least in the same way)

https://www.guru3d.com/story/perpin-sensing-in-gpu-connectors-prototype-12vhpwr-connector-design/

The layout of the 16pin connector is 4 sensors, 6 grounds, 6 currents

Cool so the amps are measured on the ground... thank you my man.. so it is PERFECT.. ohhh the card is such a pleasant surprise was so afraid i bought the MRSP MSI card, but 1000bucks more for a Gigabyte or a MSI (suprim or Aorus) or close to for the "cheaper version" i just got.. "poor" and bought the base version Ventus at MRSP (well i think like 3-4% more than the base price Reference that is never avail. here in DK.

[Millios]

2 minutes ago, RasmusDC said:

Cool so the amps are measured on the ground... thank you my man.. so it is PERFECT.. ohhh the card is such a pleasant surprise was so afraid i bought the MRSP MSI card, but 1000bucks more for a Gigabyte or a MSI (suprim or Aorus) or close to for the "cheaper version" i just got.. "poor" and bought the base version Ventus at MRSP (well i think like 3-4% more than the base price Reference that is never avail. here in DK.

Poor and a 5090 no matter the version is a lil funny to me when used in the same sentence 

its till a 2K+ card

Just make sure the wires dont shake loose or not make proper contact at  any time otherwise 1 wire will draw more amps that it can handle and the rest we know what they are

[RasmusDC]

2 minutes ago, Millios said:

Poor and a 5090 no matter the version is a lil funny to me when used in the same sentence 

its till a 2K+ card

Just make sure the wires dont shake loose or not make proper contact at  any time otherwise 1 wire will draw more amps that it can handle and the rest we know what they are

yeah got that.. to be honest, i will have my ampclamp.. but i have also now seen 3090 burn connectors...

 

It is insane you have to do that.. on a modern GPU, but i fiddle with AI, a lot.. and the 32GB was just so much more capable than the 16GB i could get on the 9070xt or the 5080.

and.. DAMN this card is fast.. it is time for 4K, it runs at 144 on my monitor when i lock FPS.. i use like 40-50% of the card on most games i play..

but it does FM2024 REALLY great.

[Millios]

Just now, RasmusDC said:

yeah got that.. to be honest, i will have my ampclamp.. but i have also now seen 3090 burn connectors...

 

It is insane you have to do that.. on a modern GPU, but i fiddle with AI, a lot.. and the 32GB was just so much more capable than the 16GB i could get on the 9070xt or the 5080.

4090 I've seen but not 3090 since they dont have the shitty connector

[RasmusDC]

15 minutes ago, Millios said:

4090 I've seen but not 3090 since they dont have the shitty connector

yes.. there are also 3090 and even 3080 just not talked about a lot 

 

There is also on normal 8pins, when you have shitty cables, even with an 8 pin it can happen... so especially with a lot of mod cables, there are problems.. especially the handbuilt ones, because they are not pinned tight enough when assembled..

 

i am not saying it is a normal occurance, and it is so stupid that in reality the cost of making the cables thicker, so it would never be an issue, since power delievery on the board itself more resembles a busbar than a wired connector.

 

i´m not so nervous.. had i had a small micro system, with heavy bends, or connector touching glass (nice this card is not giant) or an old cable.. maybe.. or "modded" extenders.. 

 

I still was nervous enough to measure, and buy a new PSU..