Speculation: Ryzen 3000 series

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What will Ryzen 3000 for AM4 look like?


  • Total voters
    222
Feb 4, 2009
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At any given voltage and clockspeed, no. It just has a higher boost range and different PPT, TDC, and EDC limits @ stock.
I see, essentially the 3800x is a golden sample 3700x.
If a 3800x was clocked at a 3700x the power would be identical or marginally better.
 

DrMrLordX

Lifer
Apr 27, 2000
13,040
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I see, essentially the 3800x is a golden sample 3700x.
If a 3800x was clocked at a 3700x the power would be identical or marginally better.
Pretty much. Also if you look at Silicon Lottery, I think the 3800x has the highest AVX2 clocks according to their testing.
 

naukkis

Senior member
Jun 5, 2002
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Boost implies not sustained. It isn't a difficult concept to understand.
If a clock is sustained at max boost then it is operating out of spec, as is the case with Intel CPUs.
You are confusing all core and single core boosts. Single core boost can't use much power and thus boost is sustainable forever within power and thermal limits.
 

Vattila

Senior member
Oct 22, 2004
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Single core boost can't use much power and thus boost is sustainable forever within power and thermal limits.
Well, that would imply that a core can run at max frequency at max temperature within nominal specifications, i.e. at thermal limit. Cores can achieve higher frequency at lower temperature (about 100 MHz for every 20 degrees C, according to DerBauer).

So, if sufficiently below max nominal temperature, a core can briefly boost to max frequency until the core heats up and forms a hot spot, which it probably does in a fraction of a second. At this point the OS may move the workload to an idle (and cold) core, allowing the hotspot to cool. Or the workload may ease up briefly (e.g. stalling on memory access or I/O), after which the core may have cooled down sufficiently to briefly boost higher again. This is seen as frequency spikes.

It appears AMD compensated for these spikes by lowering the advertised Max Boost frequencies by 50 to 100 MHz for the 1st and 2nd generation Ryzen and introducing the XFR concept accounting for the difference between the Max Boost advertised and the actual max frequency achievable by the CPU at stock settings. The XFR concept seems to have been dropped altogether for the 3rd generation, and the Max Boost now means max (or much closer to it, at least).

To remind everyone about XFR, I'll include this slide again:

 
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VirtualLarry

Lifer
Aug 25, 2001
44,787
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Interesting. I wonder whether the 3500 and 3500X are coming to the USA, and how much? You know one of them is going to have to match the price of the i5-9400F, Intel's got a competitive chip @ $140 at that price point, though a 6C/6T Ryzen would be preferable to me.
 

cortexa99

Member
Jul 2, 2018
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Interesting. I wonder whether the 3500 and 3500X are coming to the USA, and how much? You know one of them is going to have to match the price of the i5-9400F, Intel's got a competitive chip @ $140 at that price point, though a 6C/6T Ryzen would be preferable to me.
From what I know 3500X is priced pretty similar as 9400F. I guess if cache config is true 3500 would be cheaper than expected.


OTOH what surprise me is AMD rather release 6C6T SKUs than 4C8T.
 

VirtualLarry

Lifer
Aug 25, 2001
44,787
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OTOH what surprise me is AMD rather release 6C6T SKUs than 4C8T.
I think that the "marketing optics" are better, with AMD competing with Intel, with Intel now selling 6C/6T CPUs minus iGPU, rather than 4C/8T, that AMD should match them core-for-core, for the same price, and come out even or ahead on performance, on an arguably superior, upgradable platform.
 

amd6502

Senior member
Apr 21, 2017
634
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2+2 and 4+0 die salvage is going to be pretty rare, and it seems that Epyc is taking a some of these dies too with their high L3:cores parts. With 80%+ yields on 8c chiplets it would take a while to accumulate.

Also, given this 3500 series launch, if AM4 gets any 4c/8t chiplet based parts they would have to get numbered with the 3400 series. like 3430x or so.

In my opinion this is a good move, to get rid of some of the dies that don't make the freq cutoff for the 3600x and 3700. It allows you to price the 6c/6t parts a good bit under the 3600 price and helps the 3600 out in moving volume of low bins.
 
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LightningZ71

Senior member
Mar 10, 2017
262
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Besides, AMD already has 4c4t and 4c8t parts with their APUs. They can also salvage 2c4t and 2c2t if they want. They could potentially salvage ones with bad gpus.

I wonder if the 2300/2500x chips are still being made?
 

Abwx

Diamond Member
Apr 2, 2011
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They are sold in retail but at hugely inlated prices, something like 150/195€ respectively for the 2300X/2500X, so basically yes, it s OEM only...


 

amd6502

Senior member
Apr 21, 2017
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Looks like 24c/48t might be Threatripper 3000 flagship. If there is a higher core count Zen2 part for TR4 I wouldn't expect it till next year and if so, possibly branded under Opteron. Chiplets seem under high demand now. It could be a combo of healthy server and AM4 demand. I think it would be a possibility if parts were still added to the 3000 line in 2020, including Pinnacle ridge; during Q2, close to when the first 4000 series start arriving.
 

Markfw

CPU Moderator, VC&G Moderator, Elite Member
Super Moderator
May 16, 2002
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Looks like 24c/48t might be Threatripper 3000 flagship. If there is a higher core count Zen2 part for TR4 I wouldn't expect it till next year and if so, possibly branded under Opteron. Chiplets seem under high demand now. It could be a combo of healthy server and AM4 demand. I think it would be a possibility if parts were still added to the 3000 line in 2020, including Pinnacle ridge; during Q2, close to when the first 4000 series start arriving.
I can't believe it will premere with less than the 2990wx. I would say 48core tops, 24 core min. Then 64 core later.
 

jpiniero

Diamond Member
Oct 1, 2010
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I can't believe it will premere with less than the 2990wx. I would say 48core tops, 24 core min. Then 64 core later.
24 cores fully loaded at mid 4's is going to draw like 250+ W as it is. You may as well make an "Epyc W" platform (and charge Epyc prices) if you want to sell 300 W+ monsters.
 

Markfw

CPU Moderator, VC&G Moderator, Elite Member
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May 16, 2002
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24 cores fully loaded at mid 4's is going to draw like 250+ W as it is. You may as well make an "Epyc W" platform (and charge Epyc prices) if you want to sell 300 W+ monsters.
Dont bet on that. My 2970wx does not draw 250 watt and its the old version.
 

Markfw

CPU Moderator, VC&G Moderator, Elite Member
Super Moderator
May 16, 2002
18,358
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24 cores fully loaded at mid 4's is going to draw like 250+ W as it is. You may as well make an "Epyc W" platform (and charge Epyc prices) if you want to sell 300 W+ monsters.
Now sure now. My 3900x (one of them) is doing 134 watts @4.1 ghz, so 268 for 4.1... Maybe
 

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