Oh, that used, beat-up, last-gen systems use last-gen DRAM technology, and thus cheaper to build with? Is that your point? I don't like having to guess here.
I believe your original point, was simply that the 2200G / 2400G are too expensive for entry-level builds, simply because of the cost of DDR4. I don't buy that premise.
But that cost of RAM is the same between AMD and Intel rigs, for the most part, except for vendors possibly gouging prices on "Ryzen Compatible" RAM which seems to have a premium that the cheaper "XMP Intel compatible" DDR4-3000 and up don't have.
Edit: I was simply pointing out, that the "DDR4 or not-DDR4" question, wasn't even a valid one, for people that prefer to "build new" - something that's perfectly acceptable, to only want "new" hardware, if you purchase for longevity, rather than saving every last $$$ and aren't afraid of pot-luck hardware lifespans.
Edit: To wit, I sold a friend of mine a "refurb gaming PC" that I built, the first one I built, based on an ebay-purchased OEM refurb office tower PC, with a quad-core Intel CPU. I installed 16GB DDR3-1600, a new SSD, a new 1TB HDD, and a new GTX1050.
Well, he's having problems with it, "kernel error" with the video drivers, when he watching several YouTube vids.
Fresh OS install, no issues that I know of with all of the new parts (although, I will have him run a memory test, if I didn't already when I built it).
But I'm really regretting going the "used, refurb, it's cheaper!" route, for his "new" gaming rig, if it's giving him trouble, that could indicate a bum PSU or mobo, or even CPU.
Edit: I guess my point with that anecdote was, building using refurb parts / chassis / mobo / CPU, can be "cheaper", in the absolute dollar sense, but it may not actually be "better".
I mean, performance of it is fine, it's just that I don't think that it should be crashing while watching YouTube.
It could be a browser / video driver issue.The curious thing is, it happens on both his "ancient, falling-apart" rig, with an Intel Core2Quad CPU, Windows 7 64-bit, and a 2GB Fermi GTX460, and the same thing (he claims), is happening with his Ivy Quad-core rig, with a new GTX1050 2GB, also with Win7 64-bit.
I'll have to dig more info out of him, maybe it's a software issue after all, or some interaction with his Browser.
Might ask him to switch browsers for a week or two and see if the crashes / kernel driver re-starts go away.
Or maybe the refurb OEM box needs a new PSU. If it's ATX, I'll just go over and throw a brand-new one in for him.
Edit: If your point, was simply that for budget gaming builds, building NEW with one of the new Ryzen APUs, was more expensive due to DDR4 prices, than buying and building a gaming PC out of refurb parts, I would partially agree that it could be more expensive, but given my experiences, of apparently losing the "refurb silicon lottery" with my friend's rig, sometimes newer and brand-NEW is better, even if it isn't actually cheaper. (Since everyone equates APU with "cheaper, like a console".)
Really, it kind of comes down to the individual refurb quality, which can be hard for an ordinary online purchaser that can't directly inspect the PC before purchase and run it, to determine whether it's worth purchasing.
Edit: I do agree that DDR4 is WAY overpriced, though. That was one of my motivations to build my (first) FX-8320E rig, on a Gigabyte 78LMT-USB3 R2 mobo, because I already had a slightly-used DDR3-1600 kit. I also bought the Team Group L5 Lite 3D SSD, the 480GB one that's $100, both then, and currently now at Newegg, probably will expire tomorrow. Topped off with a GT1030.
Yeah, I want a 2200G (2400G is hard to swallow, price-wise) APU too, but the DDR4 prices ARE kind of a killer. But you can always go with an 8GB kit if you really HAVE TO. Which I probably will.
Already have a Gigabyte Gaming 3 B350 mATX board for my 2200G APU.