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It's not just SNB graphics kexts from High Sierra, it also involves replacing several graphics related frameworks and repairing permissions. The trouble is that it's not sustainable to updates and needs to be redone after each update, pending which you may encounter trouble booting or actually using the computer (like not being able to open up a Finder window or executing programs). Given that it also remains buggy since there is no Metal graphics acceleration, it's not worth the hassle in my opinion.

That is correct, 10.13.6 is the last supported version for SandyBridge HD3000. However there are some success running Catalina but with graphics kexts from High Sierra but has some graphics glitches. Using Dark Mode alleviates some of that glitches but I still don't recommend it.

Standard/default VRAM settings for HD3000 are: 2GB RAM -> 256MB VRAM 4GB RAM -> 384MB VRAM 8GB RAM -> 512MB VRAM That's Apple's own settings, defined in the SNB framebuffer. As such, what you obtain is perfectly normal. Any changes from those settings result from framebuffer patching and I've included those (in disabled mode) in the Clover config files I posted in my guide, at least the latest ones, probably not the earliest ones. Details for HD3000 VRAM increase are available in many Mac and Hackintosh forums. Here for instance.

In the Config file under KextToPatch are 2 patches, one for 1GB, the second for 2GB. Currently they are set to disabled YES, change either one you chose to NO will increase the vram

I have an older Dell E6410 with an i7 and 4GB of RAM. Is it possible, or even worth it, to load OSX on to it? If needed, I can provide all the hardware details of the laptop when I get home later this evening. My biggest issue is that I don't have a MAC to download OSX and setup a USB drive with...could I do that in VM Ware or Virtualbox, perhaps? I'm pretty familiar with Windows and Linux, but am a total n00b regarding hackintoshing, so please forgive me if I'm asking ridiculous questions. Any help or advice would be greatly appreciated, thank you!