One of the other advantages of VMware Workstation Player over VirtualBox, one's allowed to assign as much as 2GB of the assigned RAM towards graphics, rather than either the 128-256MB allowed by VBox.
Windows 8.1 & 10 will allow the 2GB limit, while it's 1GB for Windows 7. Many Linux OS's are allowed the 2GB max. It's something you'll want to keep in mind when assigning graphics RAM to the guest. 2GB is 8 to 16x the amount that VBox allows, and even the OS's limited to 1GB will gain at least 4x as much graphics RAM, though could be 8x as much if 128MB is the VBox max for the OS being used. That's graphics that can be put to use in gaming & one has more choice over resolution of the VMware screen, though the user will be warned if a choice may be too much.
My VMware WEI's are higher than many PC's out of the box, even though the VM is within the /home partition of an HDD, it's still 6.0, and the lowest score I have. The rest are near identical to a native Windows install, yet breaking the 5.9 WEI on a HDD is an amazing feat in itself.
You should really give the free VMware Workstation Player a shot, and if you're curious whether VBox is better, you can install that & a VM also & see for yourself which is the better of the two. Being that you want to game, you want these WEI's to be as high as possible.
And as DC stated, when possible, more PSU is desired for the best overall experience. Unfortunately, not all has this choice, with proprietary adapters all over the place, it's rather hard to splice all of these in place, unless one has a lot of experience with these things. Another reason why building is preferred over pre-built when possible. Though when I was looking to build in the summer of 2013, an i5 build with 8GB RAM & everything else needed was over $1,000. It was a no-brainer decision a couple of months later to purchase this XPS 8700 I'm now in, that shipped with an i7, 12GB RAM & a small, yet still a 1GB GDDR5 GPU (Dell OEM Radeon 7570), for $699.99, plus taxes & shipping. Dell themselves charged $350 more for the same exact configuration. So while I was looking at a i5 4xxxK CPU & all of the work that had to be done & compared, feel that I came out as a winner & when new, one of the benchmark sites listed the CPU as the 'cat's whiskers' & only the one data drive brought down the overall score to some degree.
Plus Dell has cleaned up their act in a huge way, are now using mostly basic Intel connectors, rather than a rat's nest of 3rd party proprietary connectors, as many XPS owners dropped in 750-1000W PSU's w/out issues to power large nVidia GTX GPU's (mainly the 980 models), though there were other issues both on nVidia & Dell causing troubles with these to run, a UEFI firmware upgrade to A11 fixed this, plus made it more Windows 10 compatible, as well as native support for the i7-4790K. The PC has now been approved for a specific GTX 970's w/out upgrading the PSU.
OK, thank-you all for your help. I didn't realise I could use Workstation for free on Linux. (Recently converted from Win10, so used to Player, which sucked, I'm told) So I should be able to go ahead with this now.
With what Deimos said about PSUs, that's what I thought, but I've heard both sides from different people and wanted to check.
Karzahni, you're very welcome!
Let us know if you need further assistance, we'll be happy to help. BTW, VMware has a tool to convert VBox VM's into a file that VMware can open & run, though re-activation will be required for Windows & Office, if installed.