Question Dell Optiplex 780 MT 305 Watt PSU: enough for GT 1030?

[arajigar]

Hi.

After some research about what parto to pick here and ther to make the 780 a LAN PC just for gaming, I noticed that the PSU this computer has can only supply 305 Watt, but I ´d read in the info sticker attacke to it that it can only supply 240 Watt in the 12vA and + 12vB (???).

As I want to put a GT 1030 just to make it able to run games like The Hunter Primal, Slime Rancher, Aliens Colonial Marines, CS:GO and Mechwarrior (not 5, that´s crazy unoptimized junk), I did a simulation at https://outervision.com/power-supply-calculator, and it throws that I need ONLY (for my system) a 267 Watt PSU, problem is that I cannot say that if those 240 Watt limit will make the system collapse, because I don´t understand fvery well math between the rails and voltages of a PSU.

The final system config (with new hardware) is:

480 GB SSD (get rid of the old HDD)
8 GB DD3
GT 1030

...just that.

Since now the PSU was moving 3x80 mm fans (on put on top an old GT220) and two 80 mm fans as exhaust (that case hasn´t any).

Should I proceed to add the new hardware or should I buy a new PSU+adapter (the 24 Pin connection is smaller and need anadaptor to fit).

Thanks in anticipation!!.

 

[Vic 40]

Don't think that the gt 1030 wil use that much more power than the gt 220. You could make a photo of the stikker on the side of the psu and let us see what it's +12V max might be?

You can use Imgur to post a picture here,use the "img" link.
Click "new post" ->choose "upload images" -> "browse" ->choose the picture and click "open" ->put cursor on the picture that you uploaded->choose "share links" and copy the img link,paste it in your next post.

Looked at a document and it seems that 240watt is the max .


Make sure you get a gddr5 version of the gt 1030. Kinda up to you to try. Don't know what other parts in the pc (?) so cannot make an educated guess.

 

[arajigar]

I cannot do any decent photo, my camera is a total fail.

The values of the sticker are:

Max Wattage 305 W
+5V -> 16A
+3.3V -> 8A
+ 12VA -> 15A
+12VB ->10A
+5Vfp -> 4A
-12V -> 0.5A

+5V and 3.3v must not pass 80W
+12VA and +12VB must not pass 240W

Actual hardware

Motherboard (original from DELL)
CPU Core 2 Duo E8500 3.16Ghz
8 GB DDR3 RAM 4x2GB 1333Mhz
DVD-RW Drive
120 mm FAN (CPU Heatsink)
2x80 mm Fan (Exhaust)
1x80mm Fan (GPU)
Nvidia Geforce GT 220 2 GB GDDR3

New Hardware

480 GB SATA SSD Kingston
Nvidia Geforce GT 1030 2 GB GDDR5

Possible hardware

Frontal FAN controller

Peripheals

Gaming mouse
Gaming keyboard
Mouse Bungee with 4 USB 2 connections

 

[Vic 40]

Don't think that adding the new parts will affect the usage of power that much, can only hope that the old psu will live on for a while, otherwise just get a newer system.

 

[arajigar]

Yes, that´s the smarter approach, but I don´t want to buy a newer system just for ocasional gaming, and the Optiplex seem to have enough horsepower to handle those games I mentioned