Nops, el vrm de las 2080 es capaz de suministrar continuamente 500w, y el de la 2080Ti 600w. Las limitaciones de las que se suele hablar de 75w y 150w para 6 y 8 pin no se ajustan a la realidad del cableado y tampoco a la calidad del VRM de estas nuevas gráficas. En este sentido, os invito a leer lo siguiente:
"This RTX 2080 Ti have both 8-pins located on top edge of the PCBA. These can provide plenty of power for any normal-condition benchmarking, stress-testing and overclocking.There is common misunderstanding to refer 6-pin or 8-pin MiniFit.JR connectors as fixed 75W or 150W power capable inputs.Nothing can be further from truth actually, as connector port itself does not define the power cap. These power levels are nothing but just the way for how NV determine capability of used board hardware to deliver high power to the voltage regulators. It’s purely imaginary specification and have nothing to do with actual power taken from connector nor power input capability. Active circuitry on PCBA after the connector is used to measure current flowing from the connector into the VRM. This enables software, driver and NV BIOS to handle GPU clocks and reduce voltages if measured power hitting programmed BIOS limit value (which can be lower or higher value than 75/150W!).So if we play and change circuit to adjust the calibration point, this limitation will be lifted accordingly as well. Also to make sure we are not at any physical limit of power connector itself, check Molex 26-01-3116 specifications, which have specifications both 13A per contact (16AWG wire in small connector) to 8.5A/contact (18AWG wire). This means that using common 18AWG cable, 6-pin connector specified for 17A of current (3 contacts for +12V power, 2 contacts for GND return, one contact for detect). 8-pin have 25.5A current specification (3 contacts for +12V power, 3 contacts for GND return and 2 contacts for detection). This is 204W at +12.0V level or 306W for 8-pin accordingly.Now when somebody tells you that 6-pin can’t provide more than 75W, you know they don’t understand the topic very well. It’s not the connector itself or cable limit the power, but active regulation of GPU/BIOS/Driver according to detection of used cables and preprogrammed limits. So how actual power measured? Will see later on detail shots of the RTX 2080 Ti PCBA."
xDevs.com | Teardown of the EVGA GeForce RTX 2080 Ti XC Ultra
Otra cosa es que los Nvidia y los fabricantes limiten en bios el power, lo cual puede justificarse desde el punto de vista de la refrigeración (sin entrar a las tasas de rma) para evitar que las tarjetas se sobrecalienten, aunque un throttle más acusado acabaría medio resolviendo el problema. Si el plan es utilizar un bloque de agua, entonces el capado tiene menos sentido ya que se está perdiendo rendimiento y estas gráficas no son baratas y deberían dar el todo. 400-450w sería una cantidad ideal.