*** AMD "Zen" thread (inc AM4/APU discussion) ***

[CAT-THE-FIFTH]

Whats that mean then ? ccx? huh ?

So the Ryzen CPU is 8 cores and 16 threads,right??

Well,each Ryzen CPU is made of two 4 core modules called a CCX:

https://www.techpowerup.com/225248/amd-zen-quad-core-subunit-named-cpu-complex-ccx

So each CCX,has the 4 cores with all the caches required including L3 cache.

The pair of modules will share a dual channel memory controller and associated chipset logic in the CPU.

So what I expect the APU will be,is a semi-custom version of the CPU with one of those CCX modules swapped out for a GPU module,sharing the same memory controller.

The only way I can see an 8C/16T laptop is if a large OEM decides to shoehorn a desktop chipset into a large laptop and use desktop CPUs like that X79 based one I linked to.

 

[AlamoX]

Just had a peek - is that set of benchmarks the same one that has been floating around for the last 5 days or so - the reference to poor memory, the low frequency and the lack of boost makes me think so.

The gif hyping the overclock performance is funny - it would be awesome if it hinted at what actual speed got the reaction though. -edit- and all the twitter comments basically say the same thing! Would be fun to place bets on what the best stable overclock reviewers can get on air and water.

If you think about CES there was a massive number of waterloops on display - I am going to put it out there that I think the 1800x can sustain 4.4ghz+ on water, based on absolutely nothing.

he commented on the tweet that it was 4Ghz

 

[Beren]

he commented on the tweet that it was 4Ghz

ZD3406BAM88F4_38/34_Y @ 4.0 base

Does anyone know how to read the chip identifier?

To be fair 6 weeks ago when we were looking at maybe 3.4ghz for this chip I guess 4.0 base would not be too shaby. But the leaks suggest a 4.0ghz boost and 4ghz+ on XFR which make me doubt that number - as most of the rest of the conversation on ******* also mentioned.

Are we saying that the XFR is adding nothing extra? Or that it is actually an achievement to maintain the boost speed 24/7?

Irritating tease is irritating.

 

[djkav]

Does anyone know how to read the chip identifier?

As I believe they are:

Ryzen 7 1800X, 1800 & 1700X, 1700 are 8c/16t
Ryzen 5 1600X, 1600 & 1500 are 6c/12t
Ryzen 5 1400X, 1400 & 1300 are 4c/8t
Ryzen 3 1200X, 1200 & 1100 are 4c/4t

The numbers don't make much sense, but any number ending in X has XFR built-in.

Are we saying that the XFR is adding nothing extra? Or that it is actually an achievement to maintain the boost speed 24/7?

To my knowledge, XFR uses the internal sensors, and adapts to the type of cooling you employ. So if it detects, its got some extra headroom to push the frequencies higher, then it will do so, in milliseconds.

 

[CAT-THE-FIFTH]

ZD3406BAM88F4_38/34_Y @ 4.0 base

Does anyone know how to read the chip identifier?

To be fair 6 weeks ago when we were looking at maybe 3.4ghz for this chip I guess 4.0 base would not be too shaby. But the leaks suggest a 4.0ghz boost and 4ghz+ on XFR which make me doubt that number - as most of the rest of the conversation on ******* also mentioned.

Are we saying that the XFR is adding nothing extra? Or that it is actually an achievement to maintain the boost speed 24/7?

Irritating tease is irritating.

From the previous leak this week,it seems to be a 3.4GHZ~3.8GHZ SKU,used for testing,ie, a qualification sample.

I wonder if what Videocardz is saying,is that the chip is running at 4GHZ constantly,so it means it is boosting past its "guaranteed" limits.

So that means XFR is active and running,then?? Considering that 3DMark is pretty multi-threaded that would be quite an achievement.

 

[Cromulent]

This is a very interesting thread. The 1800X will be mine if the performance is what people are reporting. The price looks right as well. I could easily save over £500 over the i7 6900k which is what I was going to buy instead.

Hopefully the 1800X CPUs will be binned so I can get the most out of them.

 

[Undesirable]

Sadly most big games are multi-platform,and this is probably why The Witcher 3 was somewhat downgraded from what we expected!

"Somewhat" is a slight understatement. Try and guess which of these screenshots are the final released version and which is the complete and utter nonsense promo shot.

http://screenshotcomparison.com/comparison/189658


^ Move your mouse on and off for the comparison; you know the deal!

 

[Silent_Scone]

Its not. i'm relatively new here but you Silent Scone and that drunken bloke are so afraid of being wrong over something that no one is sure about .you have to argue like ****ing kids for hours.. when you're not on the thread its informative and interesting... away from that its tedious you all need to get a grip...

Haven't once spoken about pricing... Plus, I'm never wrong

 

[ubersonic]

The 1800X is looking like a beast, now all I need is for somebody to announce a decent spec board to pair it with /drool.

 

[JediFragger]

That 1700 looks like the one for us tweakers.....




I can feel a nice little mITX Ryzen shoebox PC coming on....

 

[akarypid]

Well,each Ryzen CPU is made of two 4 core modules called a CCX:

https://www.techpowerup.com/225248/amd-zen-quad-core-subunit-named-cpu-complex-ccx

So each CCX,has the 4 cores with all the caches required including L3 cache.

The pair of modules will share a dual channel memory controller and associated chipset logic in the CPU.

So what I expect the APU will be,is a semi-custom version of the CPU with one of those CCX modules swapped out for a GPU module,sharing the same memory controller.

I imagine that 4c/8t modules might perform quite differently if the split in cores is 4+0 vs 3+1 vs 2+2? What I'm thinking is that having the active cores spread out on the chip might help with heat dissipation. Maybe it's too insignificant to matter though...

In any case, I'm a bit surprised at how low the leaked 1400X frequency is though... Just 3.4GHz boost? If the 1800X is running all cores at 4GHz why is the highest-end 4c/8t chip clocking so low?

 

[~>Dg<~]

probably heat.thats why i was on about i think the first revisions and some people have hinted they wont clock very high at all.

this has been the case also in many other amd chips previously.

 

[qwerty567111]

ZD3406BAM88F4_38/34_Y @ 4.0 base

Does anyone know how to read the chip identifier?

Spoiler

 

[SiDeards73]

Read a thread somewhere i think Anand Forums? Anyhow its been said that Asus and Asrock both have really really excellent boards ready for release for AM4.

Definitely not paying Asus tax this time round, so Asrock it is for me! Just need some solid infos

 

[qwerty567111]

Read a thread somewhere i think Anand Forums? Anyhow its been said that Asus and Asrock both have really really excellent boards ready for release for AM4.

Definitely not paying Asus tax this time round, so Asrock it is for me! Just need some solid infos

That black and white Asrock board looks pretty damn nice too

 

[SiDeards73]

Spoiler

So going by that its a 3.4 Base with a 3.8 Boost OC'd to 4ghz.. 8/16 chip 95w

So is that an X model with XFR? 6th revision too.

 

[akarypid]

probably heat.thats why i was on about i think the first revisions and some people have hinted they wont clock very high at all.

this has been the case also in many other amd chips previously.

How do you explain the 3.7/3.8/4.0GHz boost on the 1700/1800 models then? I mean, the 1700 is supposed to have a 3.7GHz boost at a TDP of 65W and that's across 8 cores. Surely a 4c model then, should be able to reach this level of boost?

Something just doesn't seem right there...

 

[ubersonic]

That black and white Asrock board looks pretty damn nice too

Just a shame about the PCI-E layout and the lack fo U.2 connector

 

[doodah]

Probably going to get gobbled up in the hype train but what's the story with AIOs and retrospective comparability? I think I have seen an instance of one company saying they will provide the correct mounting bracket. Just bought and installed a Kraken X52, so hoping I can keep it if I upgrade to a Ryzen system.

 

[CAT-THE-FIFTH]

I imagine that 4c/8t modules might perform quite differently if the split in cores is 4+0 vs 3+1 vs 2+2? What I'm thinking is that having the active cores spread out on the chip might help with heat dissipation. Maybe it's too insignificant to matter though...

In any case, I'm a bit surprised at how low the leaked 1400X frequency is though... Just 3.4GHz boost? If the 1800X is running all cores at 4GHz why is the highest-end 4c/8t chip clocking so low?

The thing is though have you noticed almost all the leaks we have seen are for the 8C models? We don't know if the lessor models are launching later and if so the very little info we have seen is for qualification CPUs.