Upgrading advice

In April I bought An MSi infinite gaming computer for university work but now for mostly gaming. The computer is the entry level MSI infinite gaming computer with the specs being
- GeForceGTX 1050ti
- Intel i5-7400 @3.00GHZ
-8GB 2400mhz RAM

The computer is ok but i needed upgrade advice for upgrading because i am new to the PC gaming world so i emailed the manufacturer of the computer MSI and they where very vague in stating that i could only upgrade to a GTX 1060 6GB because of my power supply only being 350 watts. They said if i wanted a better graphics card they could change my PSU to 550W but they still wouldn't say if the computer could run something such as a 1070ti or a 1080 graphics card because they haven't tested it. Overall my experience with MSI wasn't very good because at one point they told me it was impossible to change my motherboard with them then retracting that statement with saying i could but it would void the warranty.

So because i got no where with the manufacturer of my computer I was researching gaming computers and came across this forum and decided to post for advice, So i was wondering if anyone could offer any insight into the power supply of computers and the corresponding graphics card that it could support. For example can a 550W power supply support a computer with an intel i7 7700k @4.2GHz with 16GB of 2400mhz RAM and a GTX 1070 or 1080. would it be better for me to install my own power supply such as a 650w PSU rather than sending my computer to MSI for a 550w PSU.

If anyone can offer an insight it would be greatly appreciated.

The forums belong to PC Specialist who build and sell custom PCs and laptops, so users can't offer detailed advice on competitors' specs or self build projects. I think SMI have their own forums, so you could try the user community there - or an open forum like Tom 's Hardware.

In more general terms, it depends on how MSI have built the thing. Some OEMs may use proprietary connectors for their PSU/motherboard as opposed to the usual generic ones, which can make PSU upgrades difficult or impossible. Also cooling, you'll want to make sure the system has good airflow if adding a powerful GPU. And that the GPU physically fits, as they're not all the same size (3 dimensions)

If you browsed through topics on this forum, you'd see advice frequently given out to the effect that for most gaming the GPU is the most important component and that replacing a CPU and/or motherboard etc, spending hundreds of £ on that, may net nearly no performance upgrade. Most games won't be bottlenecked by a quad core i5 CPU at this stage.

Also, if you bought a PC pretty recently and are now buying a new CPU, a new GPU, a new PSU etc - what on earth was the point of having spent (say) £150 on the CPU, £150 on the GPU, ~£40 on the PSU, etc.. only to replace it all. You're buying half of a new PC including all the most expensive parts. Plus the 7th Gen CPUs are already obsolete due to 8th Gen and imminently 9th Gen.

You may want to just stick with what you have for as long as you can before you start making major changes.

That's all just an amalgamation of comments made on people in similar situations with PCS systems rather than specific advice for your system. Hopefully you can get some more specific advice on other forums, but I would encourage you to think carefully whether you want to pour good money after bad into the system, and so soon, if what you have basically gets you by for gaming.