Warning: Long n00b Post Up Ahead!
I have ordered one of these and hope to receive it soon.
While the iGPU (Vega 8) will crush the iGPU I'm currently using (Intel HD 530), and I have no immediate plans to upgrade to a discrete GPU graphics card, I would like to know my options if I did decide to go that route in the future.
The one thing I don't like about the new architecture of these chips is the halving of PCI-E lanes. But that may be a psychological complaint on my part versus a practical one. I guess it depends more on what I want personally out of my new CPU.
I checked prices for a discrete RX 550 on NewEgg and the cheapest one was $100.00+.
While the Ryzen 1300x/1500x + RX 550 does get you better performance it really doesn't appear to be the best bang for the buck. I certainly have no intentions of spending as much on a separate RX 550 for an 8% speed improvement.
QUESTION #1: Can somebody tell me specifically (reviewers/readers) whether or not you used the exact same RX 550 discrete graphics card between the different Ryzen generations or were they appropriately matched to each generations maximum PCI-E lane count? In other words, did you pair up an x16 RX 550 with the 1300x/1500x and an x8 RX 550 with the 2200/2400G? I would assume you did this but since it isn't specified I just want to make sure. Although, maybe it doesn't matter in the end. I just want to gather facts.
QUESTION #2: What's the AMD Vega/NVidia GeForce discrete graphics card tipping point at which the AMD 2200-G/AMD 2400-G would be the bottleneck and you would be wasting your money?
"There's also been some corner-cutting to reduce production costs. Raven Ridge only packs x8 PCI Express lanes, not 16 like the first-generation Ryzen CPUs. AMD has made this sacrifice as it doesn't think it will impact performance for mid-range discrete graphics cards, and it's unlikely that those with an APU will be upgrading to a
GTX 1080 Ti any time soon so this makes sense."
QUESTION #3: AMD doesn't "think" it will impact performance for mid-range discrete graphics cards. So when you "think" something you do tests to support your "think"ing. So my question is, aren't you crippling yourself from the get-go if you purchase an x16 PCI-E 3.0 Graphics card like the RX 550 and pairing it up with a CPU that only gives you an x8 interface? While the graphs in the article do show there are slight improvements are those "slight improvements" being crippled by the x8 lanes? Would those improvements on the RX 550 shown in the graphs above been even better if the CPU supported it at x16 lanes?
QUESTION #4: "That said, at 1080p we see the benefits of local GPU memory as the RX 550 starts to pull ahead. " What makes local GPU memory better, is it speed? If so, what speed is it operating at? I'm not in the loop on the speed differences between GDDR5 and the fastest DDR4 speeds. But your comment seems to imply there is a pretty significant gap. On the other hand, you show there is always a gain in FPS as the DDR4 speeds increase. But this leads me back to question #1.
I mean, otoh, I understand that most people who buy this APU (AMD 2200-G in my case), including myself, may not upgrade to a discrete graphics card in the future. That's a fine assumption for the majority of purchasers I guess. But for those who "actually do" decide to upgrade to a discrete graphics card at some point in the future it seems like a 50% loss on your future discrete graphics card purchase (if that happens) right out of the gate. In other words, you buy an x16 graphics card but you can only use x8 lanes for it. I don't know. I got mixed feelings about all this. I'm losing my marbles trying to figure all this out.
My last question for now. I checked prices on an x16 RX550 vs an x8 RX550. They look pretty much the same as far as I can tell. I will assume you can use an x16 RX550 in an x8 mode when paired with an APU like the 2200/2400G chips from AMD and vice versa when pairing an x8 graphics card with an x16 PCI-E slot. But who would purchase an x8 RX 550 over an x16 RX 550 if the prices are basically the same?