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AMD Zen 2 (Refresh) 3900XT/3800XT/3600XT

Minstadave said:
Architecture improvements to give better IPC.
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You are on about the core / cache redesign, I dont think that will bring enough improvement to make it a worthwhile upgrade over these, if we are lucky, maybe 5-7%, but AMD have brought us most of what they said was coming with Ryzen 4000 with these, just without the redesign, its basically bringing a latency change, thats all, and IPC gain will come with that because of the Latency change, so right now, im running 3600mhz ram CL16, 68.3ns, it may bring it down by 10-15ns, to maybe 52ns if we are extremely lucky.

I only said the other day on another forum, tech heads who understand this stuff know and understand these improvements, however, we probably only make up 15% of the planet, most people I ask at work and friends etc have never even heard of AMD, but everyone has heard of Intel, and the only way to wake them up is to tell them there XBOX or PlayStation is powered by AMD, sooooo.....lets say Ryzen 3900XT is 4.8ghz, and is £400, but a Ryzen 4900 is 4.8ghz with the redesign @ £500, which do you think the average Joe will go for, they will think......why pay an extra £100 for the same speed, at the end of the day, speed sells, otherwise if people knew the truth, Intel wouldnt be selling any CPUs.

When they keep that same core / cache redesign for Ryzen 5000 on 5nm, then it will be a worthwhile upgrade.
 
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I'm not a cinebench expert but surely having atleast 3,600 RAM would increase the score by atleast 20 points especially if it's tuned.
 
humbug said:
Its possible. the scores are in line with the clock speeds, perhaps a little low.... at 4.8Ghz it should be more like 550 <> 560.
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How does memory speeds/timings effect the scores in cinebench r20?
Watching this video, its scary to see how far AMD has come, once the ram is tuned you are getting similar to Intel like performance in a game which is more or less based on CPU ( world of warcraft), we all know this game is known for its love for high clockspeed and high IPC performance. https://www.youtube.com/watch?v=84OkOLzRPxY
I guess some architectures benefit more from memory tunings compared to others, especially the new ryzen series. I have never ventured into this field with my 5820k besides overclocking multiplier and enabling max xpm ram profiles.
 
The Old School Gamer said:
This same guy also did another interesting video demonstrating how poorly Zen 2 scales with frequency with an 5Ghz comparison.


Memory latency definitely needs to improve, and hopefully it will do with Zen 3.
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Seeing that video the more I think that game engines are designed for Intel. Especially far cry like wtf. That game is so anti-ryzen its unacceptable. They even promote optimised for ryzen in that game haha. They should do an update. There is no reason a 8400 should win against a 3900x in that game.
 
Pannalicour game engines are no more designed for Intel than designed for SSD. Have you seen the load times on spinning disk?
Unoptimized code will prefer low latency, end of story.
 
Joxeon said:
Its still essentially the same parts just better binning.
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I think its Zen 3 (N7P) as AMD removed the + off the slides, meaning they will not be using N7+ (7nm+) for Zen 3, only its Zen 3 without the core / cache changes, it has the higher cores speeds and higher FCLK that they said was coming with Ryzen 4000.

I'll be surprised if its N7 (Zen2) and then they bring out N7P (Zen3) with no other changes except the core / cache redesign, and if it is highly binned N7 (Zen2) what are they doing with the chiplets and cores that are not binning so well ? everyone is reporting that the 3300 and 3100 are overclocking like beasts, so they are not putting the rubbish binned cores into those lower end chips, I suppose they could be making the 4000 Apu's and laptop chips out of the not so good cores, after all, these chips are always a generation behind, so the cores of these APU's and Laptop chips will be Zen 2.

Desktop got Ryzen 1000 Zen1 14nm = No APU's
Desktop got Ryzen 2000 Zen+ 12 nm cores, 2000 APU's got 14nm Zen Cores
Desktop got |Ryzen 3000 Zen 2 7nm Cores (N7), 3000 APU's got 12nm Zen+ Cores
Now we have these new mysterious chips, at the same time, AMD are announcing everywhere about all of the G and GE suffix APU's and laptop chips that are about to come out, known as 4000 series, they will be Zen2 7nm (N7), same cores we have in the current 3000 series desktop chips, whilst desktop chips move on to better things.
 
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Participant said:
Do you know what binning means?
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If they had got the quality of silicon back last july that they have now then the original chips would have likely hit those clocks. If anything those chips even struggled to hit the box spec and the 3950x was delayed because the yield quality wasn't up to par.
Maybe these chips were what AMD had originally intended to release but had to dial things back as the silicon was just not good enough, these new chips are very close to the leeked specs that popped up about 6 months before release.
 
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Joxeon said:
If they had got the quality of silicon back last july that they have now then the original chips would have likely hit those clocks. If anything those chips even struggle to hit the box spec and the 3950x was delayed because the yield quality wasn't up to par.
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My 3900X boosts to 4.6ghz all the time, it was bios bugs, AMD reported it themselves, the 3900X is well know to have one good chiplet and one not so good one, they saved all the really good ones for the 3950X, the reason it was late was because they were using the same cores for Epyc, and thats where the money is, server market came first.

AMD dont only bin cores, they also bin memory controllers or IO dies if you prefer, which is why you find 3800X's better than 3700X, better binned parts.
 
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