AMD Ryzen 4000 Pro 4350G , 4650G and Ryzen 7 4750G APUs Pop Up at Distributor
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schmidtbag
Great to see they've gone up to 8c/16t, though I'm most curious about the GPU specs. If they stick with Vega graphics, they're going to have to do something about the memory bandwidth. The larger L3 might help a little bit but I don't think that's enough.
Kaill
So with these coming out, how will this effect the 4200g (3200g) and 4400G (3400g) variants are they going to be boosted up to ryzen 9 versions? as they usually have a higher voltage.
Truder
user1
will be very curious to see how memory overclocking effects igpu performance on consumer variants of these apus.
schmidtbag
bobblunderton
Hooray, Finally some good new processors to make a few new email computers for around the house.
The new chips* only have 12mb max L3 cache, unlike the 3xxx series Matisse chips. The L3 they have though, is available with less latency per-8-cores / 16-threads due to not having to 'hop' past the divider for the L3 cache like on 6-core or above Matisse designs, where 16mb L3 was allotted in 4-core groups.
So if you have software that uses 8 real cores, it will run faster because it will process quicker and also sync faster with other threads on the same app due to having less latency and less time wasted by the core as the data it needs or is done with is hopping around the chip. This will also be the case for 4xxx series non-apu designs, though apps using more than 8-cores will still hit a latency penalty of some sort due to the core design.
As you go higher though on intel chips conversely, you have basically the same type of interconnect (in place of single and dual ring-bus designs), so it's not a big deal, it's just something one must deal with when running mega-core-count chips over 8-cores.
Mesh designs are advantageous if you don't have slow memory, and you actually USE 8 or more threads, as that would saturate single ring bus and eventually dual-ring bus past 8 cores if they are very busy.
Even in day to day compute, I could feel a big difference partly due to copious amounts of l3 cache in my 3700x over my old 4790k (that was unpatched), and now to this 3950x I put in a week ago. Content creation such as building stuff with World Machine makes a huge difference when having lots of cores.
12mb of lower latency cache VS 32mb of higher latency cache will do just fine, it's a pretty even trade-off, and generally works out for the better unless your app is cache-starved and using a heck of a lot of cores.
To AMD's credit: the on-chip Matisse level 3 cache, even with the latency complaints going around, is usually consistently faster than the intel chips I've tested here, so the latency cries alone are pretty much solved with Matisse and even better on 4xxx chips, apu's or not apu's. They still have much room for improvement in future generations though, and I don't expect AMD to sit on it's laurels anytime soon.
*XT models still have the same amount of cache as other Matisse models, and are just slightly better-binned chips. This is listed for clarification purposes and is different from the G-series APU chips.
3 Cheers for competition in the CPU market before we all get too old to build pc's!
schmidtbag
@bobblunderton
Don't get me wrong, for CPUs, the bigger L3 makes a noticeable difference. But we're talking about an APU here. That L3 cache is nowhere near enough to feed a GPU. It will make a difference but the GPU is still going to be bottlenecked by memory bandwidth.
I hope AMD adds more memory channels for AM5 because I feel the jump to DDR5 isn't going to be sufficient.
bobblunderton
schmidtbag
bobblunderton
schmidtbag
0blivious
I don't think anyone should be buying these things FOR gaming, but these are so much better than what we used to get as base graphics solutions in cheap laptops and PCs.
I don't really game on laptops (and rarely even use my laptops) but it's still nice to have the option to do some gaming. Vega gives you that. Going from a UHD620 to Vega 6 in my new laptop has opened up a huge library of now playable stuff. I tested some newer titles (I have no intention of playing on laptop) just to get a sense of what this budget APU could do. On the CPU side, this 4500U basically matches my 4790K, which I find incredible in a lightweight, cheap laptop. GPU-wise, it's not far behind a 2gb 940MX, about 10-15%. And it does so without sounding like a jet engine under load. Overall, it's pretty impressive.
[SPOILER="My 4500u benches"]
4500U Vega 6 w/ 16GB dual channel 3200mhz-22 (20.4.1)
CPUZ benchmark - 489 / 2678
Cinebench 15 - 890 // 54.9 FPS
Cinebench 20 - 2245
V-RAY 4.1 - 4990 // 27
Skydiver - 9565
Unigine Superposition - 1715 (default setting, 1080p) [13 FPS avg]
Unigine Valley - 1457 (basic 720p setting) [35 FPS avg]
Game FPS:
CS:GO [max settings, 1080p] avg 46//low 29
Super Mega Baseball 3 [max,1080p] avg 45//low 32 <----this actually played/looked really good. It's staying.
Insurgency [max settings,1080p] avg 51//35
STALKER - SOC [max settings, 1080p] avg 50//low 29
Civilization VI bench [low settings,1080p] avg 58//low 45
Civilization VI - Average turn time: 7.84 seconds <----------------(!)
Assassin's Creed Oddysey bench[low settings,720p] avg 33//low 17
The Witcher 3 [low settings,720p] avg 35//low 27 <-----------unplayable, but impressive.
Games without internal benches were 3 minute gaming runs with fraps keeping score of FPS (lows are absolute, not "1%").
I tried drivers 20.5.1 and 20.7.1 but they give 3-5% lower performance than 20.4.1 does.[/SPOILER]