Different Results on Power Supply Calculator Websites

[milesuy]

I am researching whether my system can handle 2 GPUs and a Ryzen 9 5950X. I tried checking multiple PSU calculators but they have totally different results.

 

• Which calculator would you use or recommend?
• Which calculator listed below is the most accurate?
• How much wattage would you recommend for the specs listed below?
• I currently have a 1050W PSU from In Win (Model: P105), it is 80+ Gold rated. Is this good enough for the specs listed below, since it is within the wattages listed from the 3 out of the 4 calculators below?
  • I'm planning to use the system for Folding@Home and for paravirtualization (2 gamers, 1 PC).

 

The specs I entered on the calculators are the following:

• 1 NVME SSD
• 2 SATA 3.5" HDD 7200RPM
• 2 SATA 2.5" SSD
• 2x RTX 3070
• 7x Fans
• No water cooling
• ATX Motherboard (ROG ROG Strix X570-F Gaming)
• 2x 16GB DDR4 RAM
• Ryzen 9 5950X

 

According to bequiet, I need at least 954W.

According to FSP, I need at least 712W.

According to Newegg, I need at least 1120W.

According to Cooler Master, I need at least 702W.

 

[da na]

Why 2 3070s, is my main question. Render farm? Else, thats useless

[manikyath]

aside from what you're actually shoving in that rig.. PSU calculators are always a bit of an "educated guess", as welll as headroom in your power supply is actually a good thing for longevity and efficiency.

[Pandur]

5 minutes ago, milesuy said:

I am researching whether my system can handle 2 GPUs and a Ryzen 9 5950X. I tried checking multiple PSU calculators but they have totally different results.

 

• Which calculator would you use or recommend?
• Which calculator listed below is the most accurate?
• How much wattage would you recommend for the specs listed below?
• I currently have a 1050W PSU from In Win (Model: P105), it is 80+ Gold rated. Is this good enough for the specs listed below, since it is within the wattages listed from the 3 out of the 4 calculators below?
  • I'm planning to use the system for Folding@Home and for paravirtualization (2 gamers, 1 PC).

The specs I entered on the calculators are the following:

• 1 NVME SSD
• 2 SATA 3.5" HDD 7200RPM
• 2 SATA 2.5" SSD
• 2x RTX 3070
• 7x Fans
• No water cooling
• ATX Motherboard (ROG ROG Strix X570-F Gaming)
• 2x 16GB DDR4 RAM
• Ryzen 9 5950X

I would say your 1050W is good enough. You could use the average of the four results. (872W btw)  

3 minutes ago, Mel0nMan said:

Why 2 3070s, is my main question. Render farm? Else, thats useless

*cough*mining*cough*

 

No but seriously, two gamers one pc. Even if it sounds dirty, they can use one GPU each.

[milesuy]

22 minutes ago, Mel0nMan said:

Why 2 3070s, is my main question. Render farm? Else, thats useless

 

15 minutes ago, Pandur said:

I would say your 1050W is good enough. You could use the average of the four results. (872W btw)  

*cough*mining*cough*

 

No but seriously, two gamers one pc. Even if it sounds dirty, they can use one GPU each.

Rendering and 2 gamers one PC. The latter is just an experiment, and if successful, I'll be sharing my PC to my friends, since they have low spec laptops (Intel HD Graphics & only on HDD), and game loading eats a lot of our time.

 

I was planning to mine to offset the cost of upgrading, but crytocurrency crashed and electricity prices are high in my country. I'd rather do Folding@Home, at least I got to help in finding a cure for COVID-19.