Question regarding UPS Battery backup

[t40r]

First off let me say this first, this is my first battery backup so I am a bit new to the game when it comes to these. Just want to make sure I am doing things right

 

 

 

 I am wondering if I underpurchased when it comes to my UPS.

Here is the one I purchased: https://www.bestbuy.com/site/cyberpower-1500va-sine-wave-battery-back-up-system-black/6408459.p?skuId=6408459

Computer specs: 
Ryzen 7 7800x3d
RTX 4090 
64gb of DDR5
10 fans (no rgb on not sure if that matters)
2 M.2 SSD's 
1000watt powersupply

Monitor: 4k Oled 244hz (not sure if that matters or they all pull roughly the same)

Now I understand that I likely never or will never reach 1000 watts of use. Which is why I figured no problem getting a 900 watt battery backup. The only things I have on the battery portion is the monitor, computer, and the router. Thanks for the response in the meantime! And any knowledge is great! This is my first time purchasing one of these, however with all of these showers and power outages I really felt it was worth it. I also am not looking to utilize the computer during a power outtage, the goal is to be able to shut it down/act before the surge would hit the pc

 

I also ran Furmark for about 5 minutes, checked the LCD on the front of the UPS and it only says I am pulling somewhere around 600 watts. So that did make me feel a bit better, however I am well within the return policy at the moment and if I need to stepup to a bigger one, I would rather use the money I spent now towards that rather than having to repurchase a whole new device.

[Tech Reprise]

2 hours ago, t40r said:

First off let me say this first, this is my first battery backup so I am a bit new to the game when it comes to these. Just want to make sure I am doing things right

 

 

 

 I am wondering if I underpurchased when it comes to my UPS.

Here is the one I purchased: https://www.bestbuy.com/site/cyberpower-1500va-sine-wave-battery-back-up-system-black/6408459.p?skuId=6408459

Computer specs: 
Ryzen 7 7800x3d
RTX 4090 
64gb of DDR5
10 fans (no rgb on not sure if that matters)
2 M.2 SSD's 
1000watt powersupply

Monitor: 4k Oled 244hz (not sure if that matters or they all pull roughly the same)

Now I understand that I likely never or will never reach 1000 watts of use. Which is why I figured no problem getting a 900 watt battery backup. The only things I have on the battery portion is the monitor, computer, and the router. Thanks for the response in the meantime! And any knowledge is great! This is my first time purchasing one of these, however with all of these showers and power outages I really felt it was worth it. I also am not looking to utilize the computer during a power outtage, the goal is to be able to shut it down/act before the surge would hit the pc

 

I also ran Furmark for about 5 minutes, checked the LCD on the front of the UPS and it only says I am pulling somewhere around 600 watts. So that did make me feel a bit better, however I am well within the return policy at the moment and if I need to stepup to a bigger one, I would rather use the money I spent now towards that rather than having to repurchase a whole new device.

Try some heavy games and check. Furmark doesn't stress the CPU so much as it does the GPU. Your system should consume around 900W±5% at full load

[t40r]

36 minutes ago, Tech Reprise said:

Try some heavy games and check. Furmark doesn't stress the CPU so much as it does the GPU. Your system should consume around 900W±5% at full load

Ahhh okie dokies, I'll load up some cyberpunk and see how it fairs Thanks for the response! I suppose I should judge it off of that no? As in "is that front panel on the unit trustworthy to see how much it is pulling?"

 

EDIT

Does it help that I power limit my card to 85%? or does that not matter?

 

Also thanks for your response 

 

EDIT 2

Alright so I went and played about 15 minutes of cyberpunk and the front panel on the UPS never went above 630 wattage for output

 

I also wanted to try another game The Division 2 just to see how it did, and it seemed to be about the same, a bit less. But pretty close. So per that I can look at that panel and say "okay cool you're under 900W" it would seem I am fine? lol I have no idea tbh. This is my first time with one of these so I'll let the smarter people help me on this one

 

[Sawa Takahashi]

You should be good with that UPS as long as you change the batteries every 5 years or so. This is normal wear from the batteries.

If you want to test the absolute max power used by your computer, you can simply run Furmark and Prime95 at the same time. Please be aware that this will turn your computer into a toaster and do not let it run like that for more than a couple of minutes.

As for buying a more powerful UPS 'just in case' you'd be surprised how to next model costs. 1500VA is the most powerful personal use affordable UPSes. For comparison, Eaton, Cyberpower and Tripp-Lite sell their 2000VA UPS at around $2000. This is a big jump from the 1500VA you bought.

In my opinion, you should go with the UPS you bought. This is a powerful model, easy to use and configure and the replacement batteries are standard batteries you can buy from third parties.

Have a nice day !

 

[t40r]

Quote

2000VA UPS at around $2000.

Oh... LOL yes this is the one I will stay with

 

AHH that is a good idea, I had forgotten about prime95, I will give that a shot and just let it run for a couple of minutes. I'll also set a reminder in my email to get a battery thank you for that info, I was a bit curious how long that clock would be running. 

 

From everything that I have read/seen about it, it's a great UPS. THANK you for opening my eyes into how much that could cost going the next step XD 

 

Quote

In my opinion, you should go with the UPS you bought

That is what I'm gunna do. I have thought, worst case scenario I could just put the PC only on the battery. Thanks for all of your insight  

 

EDIT 

 

Just to give you an update, running prime 95 and furmark (it is now a bit toasty in here ngl), for about 5 minutes resulted in 625 watt roughly, thank you for the suggestion. I feel very good about my purchase

[Sawa Takahashi]

On 7/12/2025 at 3:01 AM, t40r said:

Just to give you an update, running prime 95 and furmark (it is now a bit toasty in here ngl), for about 5 minutes resulted in 625 watt roughly, thank you for the suggestion. I feel very good about my purchase

I use a mid-range computer (ryzen 5600x and 3060ti and got about 90 minutes of runtime while browsing and 30-60 minutes for gaming. I sually program my computer to shut down after 5 minutes (using Cyberpower panel software) but in case of an emergency I can run my computer for quite a while under UPS power.

[t40r]

2 hours ago, Sawa Takahashi said:

I use a mid-range computer (ryzen 5600x and 3060ti and got about 90 minutes of runtime while browsing and 30-60 minutes for gaming. I sually program my computer to shut down after 5 minutes (using Cyberpower panel software) but in case of an emergency I can run my computer for quite a while under UPS power.

I was actually wondering about the cyberpower software, is it pretty safe to use? I generally don't install 3rd party apps and such, however if it could shutdown the computer after X minutes with a setting/it is safe. I am game!

 

Quote

(ryzen 5600x and 3060ti and got about 90 minutes of runtime while browsing and 30-60 minutes for gaming

wow! That is actually super impressive, I unplugged mine from the wall while it was idle and it estimated 30 minutes of use, however that was at a MUCH lower use than say if I was gaming. So if I was gaming and it happened, I'm sure it would be somewhere around 5 minutes or so!

 

Thank you so much for all of this help! You truly have been a fountain of knowledge regarding this. 

[Sawa Takahashi]

19 hours ago, t40r said:

I was actually wondering about the cyberpower software, is it pretty safe to use? I generally don't install 3rd party apps and such, however if it could shutdown the computer after X minutes with a setting/it is safe. I am game!

I've been using their software for many years (i'd say 20+) and it never tripped any antivirus nor anti-malware scanner.

A quick search with google said that Windows 11 should support programmed shutdowns without using Cyberpower software but I'm not 100% sure. For me, the Cyberpower panel has been robust and trouble-free.

19 hours ago, t40r said:

wow! That is actually super impressive, I unplugged mine from the wall while it was idle and it estimated 30 minutes of use, however that was at a MUCH lower use than say if I was gaming. So if I was gaming and it happened, I'm sure it would be somewhere around 5 minutes or so!

This cyberpower UPS uses two 12V 9A-h batteries and has more capacity than smaller units. Also, did you let the batteries charge for at least 24 hours before testing ? It may affect the readings.

Also, it is normal that your computer eats more juice than mine since it is higher powered to being with

19 hours ago, t40r said:

Thank you so much for all of this help! You truly have been a fountain of knowledge regarding this. 

You're welcome ! It is a pleasure to share positive experiences