Which UPS

[BejoBarokah]

Hello, first i'm sorry if i put UPS in this Sub-forum. I can't find the one about UPS and i think this is the closest one.

 

Where i'm living right now, blackout is quite frequent. So, i'm planning to buy an UPS rather than waiting my PC to broke or my work/data become corrupted. For starter, my spec are :

• Asrock B550M Pro4
• AMD Ryzen 5 3600 with stock cooler
• T-FORCE Delta RGB 8 GB x 2 DDR4 RAM
• Gigabyte RX 580 8 GB
• WD Blue 1 TB 3.5" HDD
• Seagate Barracuda 500 GB 2.5" HDD
• Seasonic GX-550 PSU
• 3x120(?) mm case fan

 

Right now, i'm considering these 2 options :

1. https://www.apc.com/shop/id/en/products/APC-Back-UPS-1100VA-230V-AVR-Universal-and-IEC-Sockets/P-BX1100LI-MS
2. https://www.apc.com/shop/my/en/products/APC-Back-UPS-1400VA-230V-AVR-Universal-and-IEC-Sockets/P-BX1400U-MS

 

It will be plugged by the PC and a 1080p monitor. I'm usually using my PC for gaming, coding, and browsing. What i need is just enough time for my PC to shutdown properly when blackout happen. Originally i'm planning to buy the BX1100LI-MS one but when looking at the run time calculator at APC website, when i put the wattage from my PSU wattage calculator, it's only can keep the computer up for about 2 minutes. Of course when i'm trying to shutdown a PC the wattage is lower, but without a device to measure it, i won't know for sure. Add "Updating windows, do not turn off the computer" (Ugh Windows, why?) and i'm not sure if the BX1100LI-MS will be enough.

 

I'm aiming to be safe, so my PC will last longer and none my files are corrupt. So.., will the BX1100LI-MS do fine? Or should i buy the BX1400U-MS instead?

 

Oh also, if you have another better recommendation i appreciate it. Thank you.

[Aereldor]

2 minutes ago, BejoBarokah said:

when i put the wattage from my PSU wattage calculator, it's only can keep the computer up for about 2 minutes. Of course when i'm trying to shutdown a PC the wattage is lower, but without a device to measure it i won't know for sure.

First of all, your PSU's rated wattage doesn't mean anything. You could plug a 1500w PSU into a low-power system and it'll only pull 100w from the wall.

 

Second, your PC is almost never going to be pulling 100% of the total TDP of all your components. If you're rendering a video or playing a really demanding game, it might get close, but if you're editing documents or something, you should be good.

[Aereldor]

I ran your components' TDP. If you max out everything, CPU, GPU, both HDDs, all 3 fans, everything, then you can pull a theoretical maximum of 375 watts. With your PSU's 80+ Gold efficiency, this means it'll be drawing a theoretical maximum of 425w off the wall or UPS. Keep in mind that unless you're using synthetic loads to push every component in your PSU to the maximum, you're never going to see this kind of draw.

 

Realistically, your draw under serious load is going to be more like 300w. With 80+ gold efficiency, this means it'll pull 330w off the wall, or the UPS. 

 

So, even if you're in the middle of a very demanding game, the 1100va UPS will give you 4 minutes and the 1400va will give you 12, and this is in the absolute worst case... Trusting the UPS manufacurer's 'calculator' which is specifically designed to make you buy the more expensive UPS, and assuming everything's going to be under basically full load.

 

If you're at or near idle - think editing documents, browsing, even updating windows, you're looking at a TDP of 93w, basically 100w from the wall/UPS. 

 

You'll get 30 minutes from the 1100va and an hour from the 1400va, again, by the manufacturer's own 'calculator'.

 

 

[BejoBarokah]

1 hour ago, Aereldor said:

I ran your components' TDP. If you max out everything, CPU, GPU, both HDDs, all 3 fans, everything, then you can pull a theoretical maximum of 375 watts. With your PSU's 80+ Gold efficiency, this means it'll be drawing a theoretical maximum of 425w off the wall or UPS. Keep in mind that unless you're using synthetic loads to push every component in your PSU to the maximum, you're never going to see this kind of draw.

 

Realistically, your draw under serious load is going to be more like 300w. With 80+ gold efficiency, this means it'll pull 330w off the wall, or the UPS. 

 

So, even if you're in the middle of a very demanding game, the 1100va UPS will give you 4 minutes and the 1400va will give you 12, and this is in the absolute worst case... Trusting the UPS manufacurer's 'calculator' which is specifically designed to make you buy the more expensive UPS, and assuming everything's going to be under basically full load.

 

If you're at or near idle - think editing documents, browsing, even updating windows, you're looking at a TDP of 93w, basically 100w from the wall/UPS. 

 

You'll get 30 minutes from the 1100va and an hour from the 1400va, again, by the manufacturer's own 'calculator'.

 

 

Oh ok. So basically the 1100va will do just fine? am i getting this right? is it too much?

 

Do you have any other advice? Cause this is my first time buying an UPS.

 

Anyway thank you

[Kilrah]

Getting a bigger UPS than you need will get you more run time, now the choice depends on how long you want/need it to run.

 

[BejoBarokah]

Ok thank you all, i think i've decided what will i buy