Gpu power connections

[BaronVonVaderham]

Hi guys,

I wanted to check if my gpu is getting enough power. Unfortunately the manuals of both my gpu and psu are too generic for an answer. 
I have an ASUS tug gaming rtx 4080 gpu, and a thermaltake tough power gf3 1200W psu. 
The cables that came with the psu are different than the manual quotes. It included an 8+4 cable for pcie 5.0 GPU’s (mine is pcie 4.0). My graphics card came with an 8+4 to 3x 8 power cable, again not in line with the manual which indicated 2x 8 power cables and connections. 
The 8+4 power cable from the psu is labeled 600W, and might imply it provides all the power my gpu needs. However, the psu data does not clarify  the connector characteristics (power rating, pin definition, or it’s intended use).

 Soo, my question is: does my psu provide sufficient power to my gpu when running at max performance?

 I’ve seen discussions where the use of splitters to reduce the number of power outlets used on the psu was I’ll advices as the psu could be in the situation that it cannot provide the required power, which could result in instability or psu overload. 

[Mk1_Trebuchet]

Not sure if I completely understand the question, but I have the Toughpower 1350W version of your PSU and feed a Gigabyte 4090 with the single 12VHPWR (600W) cable.  Seems to be providing more than enough juice.  (And yes, I use the CableMod 180-degree connector to keep the torque on the GPU power to a minimum)

[LucShep]

17 hours ago, BaronVonVaderham said:

I have an ASUS tug gaming rtx 4080 gpu, and a thermaltake tough power gf3 1200W psu. 
(...)
Soo, my question is: does my psu provide sufficient power to my gpu when running at max performance?

Yep, you're good. 

The 12+4 pin ATX 12VHPWR connector is rated for up to 600W of power draw.
The adapter cable from 3x PCIe 8-pin is rated for up to 450W of power draw.
Each PCIe 8-pin connector is rated for up to 150W of power draw.
The motherboard's PCIe slot (where you plug the GPU) is rated for up to 75W of power draw.

Your RTX4080 at stock speeds/clocks will not surpass 375W consumption, even when ran at its maximum performance (and that's including spikes).
If later on you decide to go hardcore and overclock it, push it to its limits, then yes it'll pull a LOT more Watts but, even then, it won't surpass 450W (that's including spikes) because of that GPU's board max power limit.

Which means that whichever way you're ok.  Relax and enjoy it.

Edited June 13, 2023 by LucShep

[BaronVonVaderham]

Thanks guys,

without the info I mentioned (pin allocation, port power ratings), and with manuals not reflecting the latest packaging and gpu version, I was somewhat concerned. I mean the 600w label on the cable was a giveaway, but who knows right?