triple PSU system

[37293]

so I recently upgraded my PSU in my main system and I now have 3 PSUs 2 of which are HP 600W that come with this workstation that are about 10-11 years old. using these combined could I run a Nvidia Tesla M40 card in my system. one of the original PSUs did short 3 graphic cards when it was running at almost full load, but with the 2 600W combined could I run the Nvidia Tesla M40? along with the Nvidia Quadro k4000 3GB on my main PSU?

[NonSequitur777]

@37293,

Jury-rigging two 600-watt power supplies isn’t particularly ideal for several reasons. No, I should say: strongly unadvisable. Combining two PSUs is unreliable and unsafe, especially when trying to power demanding hardware like an Nvidia Tesla M40, which requires a substantial amount of power. These old HP PSUs may also not deliver consistent performance, particularly given their age (10-11 years), which could lead to unstable power delivery or even cause damage to your hardware.

In your case, a single, higher-wattage ATX PSU from a reputable brand (e.g., 850-watt) would be much safer and more efficient. It would also help avoid the risk of shorts or other electrical issues that could harm your components, as you've already experienced with the original PSU causing damage to graphic cards.

To that end, you'll have to purchase a specific HP Z420 ATX power adapter, such as this Amazon purchase example: https://www.amazon.com/BLUEXIN-Power-Adapter-Workstation-12inch/dp/B07Q9HWYRY?crid=1SID6CDF7CAV6&dib....

Kind Regards,

NonSequitur777

[37293]

that makes sense. 

using a 700W 80+ bronze ESGAMING PSU from Amazon, linked using the ADD2PSU adapter to sync, would this work? this psu is what I have as my main PSU currently.

[NonSequitur777]

@37293,

A Nvidia Tesla M40 has a 250-watt TDP, and the absolute minimum power supply (at least according to TechPowerUp) is a 600-watt unit, so you should be OK with a quality 700-watt power supply.

PLEASE NOTE: The M40 looks like a passively cooled card. If I am not mistaken, these cards were designed for use in servers with high internal pressure airflow. It may easily overheat in a typical desktop case such as yours.

Kind Regards,

NonSequitur777

[37293]

instead of using the M40 could I use a AMD radeon vega 64 or 56. now granted my current PSU is a uncertified 700W, it has a 8 pin pigtail, should I use this for these GPUs? 

[NonSequitur777]

@37293,

Summarizing:

An AMD Radeon RX Vega 64 has a 295-watt TDP and requires a minimum 600-watt power supply and is powered by two 8-pin PCIe power cables.

An AMD Radeon RX Vega 56 has a 210-watt TDP and requires a minimum 550-watt power supply and is also powered by two 8-pin PCIe power cables.

The ESGAMING 700W power supply is a basic low-budget power supply, not something I would recommend powering your system. And no, you should never power a graphics card needing two 8-pin PCIe power cables using a pig-tailed power cable. Each 8-pin PCIe power cable should always originate from a separate power rail.

Look, I have assembled -in addition to various legacy proof-of-concept HP upgrade projects, a fair number of high-end (non-HP) PCs, and one lesson learned is to never ever try to save money on power supplies.

Kind Regards,

NonSequitur777