Basic psu calculator for i3-6100, 2x4 gb ddr4, GTX 750ti, sata ssd, no optical drive Load Wattage: 176 WRecommended PSU Wattage: 226 W if you include dvd rw Load Wattage: 207 WRecommended PSU Wattage: 257 W on this forum you will often hear different opinions. your 240w psu will be fine.  
Hi guys,   I've been looking around the forum for similar case but still unsure. So I've got a Optiplex 3040 MT with a i3-6100 processor, 8 GB of RAM and the rest is pretty much this model standard. I want to upgrade the GPU for casual gaming but is not considering upgrading PSU (which is 240 watt bronze). I've stumbled upon [URL] mentioning that MSI GeForce GTX 750 Ti GAMING OC 2GB GDDR5 will work on 240 watt PSU. But a post on this forum says otherwise.   Does anyone can explain on this? Thanks a lot!
Optiplex 3040 i3-6100 gpu upgrade to gtx 750 Ti ?