Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Do I need a new power supply if I add 8gb ram to the machine?
Document: The power supply is 280W. I don't plan to upgrade the computer soon, but this number sounds on the low side and I'm unclear if you'd need to replace the power supply if you perform an upgrade. This is a full-sized desktop tower case, larger than the compact computer cases that are becoming more common. Only two USB ports are available at the front. A few feet away, the fan is on the quiet side.
Very nice computer. However there are some limitations. If you want to change the video cards to get a high-performance graphic card, you also need to change the power supply.
I need power and performance in a machine. I work them hard and repair/maintain as needed. I will get years out this machine. It is fast, quite and handles the largest of Nikon D800 RAW and Tiff files with ease.
I am using this desktop to run a computer workstation for music. My previous laptop could not keep up, and when the cpu was overloaded, the sound would distort. This computer keeps up nicely probably due to the 12gb of ram and an i7, 3.4mhz processor. Great price, just add monitor.
Very good quality computer. Working well without any problem, installed all updates. Eats all new games in a second).Call of duty Ghost works in Auto Mode , you don`t need to turn on Turbo Mode.. I am happy :)Thank you to LENOVO and AMAZON :)
I would highly recommend this system to anyone who wants a quality machine.Update:I've had the computer for about 3 weeks now and use it in my CPA practice. I've added 4GB of Ram to bring it up to 16GB (one of the easiest upgrades you can do). I got the 4GB from Crucial for less than $40.I installed (with my son-in-law's help)a Samsung 120 GB SSD and this is the thing to do if you are looking for speed.
I am fully enjoying my new K450 and would have given it 5 stars except for one area. To get updated drivers you have to go to the Lenovo web site and pick out the updated drivers you want manually and once you do that there is nothing on the site to tell you which drives you already have and which you need. So each time you go to the site there is the list of all drivers, not just the ones that have new updates.
I know some have said the power supply is not enough for some gamers, but it seems to work for this configuration. The light you see in the picture changes depending on the mode you have the processor switch in. If you have it all way forward, it pulses green, meaning the most economical mode, move it ahead one position, and it pulses blue, for automatic mode, and all the way back, it pulses red for the fastest mode.
But it's all good... the list must be from the initial configuration,  because once the initial setup completed so  I could examine it, everything was as described to the letter.I'm an IT professional and _very_ use to opening new machines,  mostly HP,  and this machine was purchased for personal home use.
Purchased this for office use. My job requires running Adobe applications for heavy design use daily, but also required a computer on a budget. Purchased this based on mostly positive reviews, its great specs for the price, and needing a computer with a warranty in case of failure.After 6 months of use, the motherboard failed. After doing additional research, others have had power supply failures as well, so I switched out both.
Answer: No, you can max out the memory with the included power supply.