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

I'm a little worried and not sure what to do now. I have 2x16gb 3200 CL16 ddr4 memory I ordered 1 month ago so can't return, I have a 1800x arriving tomorrow and a asus crosshair coming soon and doesn't look like the memory will work and may never work! I'm seriously debating returning the new amd cpu and motherboard (if it ever arrives!) and ordering the 7700k.... I ONLY game..... FFS amd, you have let me down AGAIN!!
 
Panos said:
Don't write such things, especially when clearly are out there reviews showing that 8/16 works fine in many games.
TW Warhammer has clearly an issue, because it dumps all the process to the last thread found, but not the rest.

1800X looks like it has boost clock issues, because manually overclocked at 3.9 performs better than left to it's own boost clock!
Hence also the 1700 OCed at 3.9 performs better than the 1800X, keeping up with the more expensive 7700K at overclock 5Ghz!!!!!!!!
Click to expand...

In single threaded apps, boost clock should hit up to 4.1Ghz providing temperature and TDP limits are not breached. When more than one thread is used the maximum boost clock is 3.7Ghz, so this would explain why 3.9Ghz all core overclock performs better in most applications.
 
From looking at pure numbers the top 5 series looks like the only one I would buy

Still many applications where fewer higher clocking cores are best.

Although I've only come across this launch today
 
AMDMatt said:
In single threaded apps, boost clock should hit up to 4.1Ghz providing temperature and TDP limits are not breached. When more than one thread is used the maximum boost clock is 3.7Ghz, so this would explain why 3.9Ghz all core overclock performs better in most applications.
Click to expand...

Yes Matt, I agree, but the 1800X supposed it have boost clock at 4Ghz. Not 3.7Ghz and getting beaten by it's own self (1800X) manually overclocked at 3.9Ghz.
 
mattyc1977 said:
I'm a little worried and not sure what to do now. I have 2x16gb 3200 CL16 ddr4 memory I ordered 1 month ago so can't return, I have a 1800x arriving tomorrow and a asus crosshair coming soon and doesn't look like the memory will work and may never work! I'm seriously debating returning the new amd cpu and motherboard (if it ever arrives!) and ordering the 7700k.... I ONLY game..... FFS amd, you have let me down AGAIN!!
Click to expand...

OR other option is sell the memory on the bay, send the 1800x and motherboard back, keep the 3770k @4.4ghz and change the 980ti for a 1080ti.... decisions decisions....
 
opethdisciple said:
So do I understand this right, although fps may be better on say the 7700k compared to Ryzen, smoothness is actually better on the Ryzen chip?

How are we quantifying smoothness? And what do we technically mean?
Click to expand...

Frame latency and minimum frames. Stick to a site you trust which shows minimum fps comparisons and draw your own conclusions. Imo there's already misinformation or at best debatable claims being made and if being cynical, damage limitation motivations at play.

But lets keep positive. Ryzen imo is a good cpu with great potential. Its just not quite where it could be for gaming and could do with some quirks being ironed out.
 
Seems to be catching on now fair few peeps are on about this Ryzen Smoothness better Mins .....its taken Ryzen to show how bad Intel are at un smoothness :)
 
ryzen is a great cpu just not as fast as intel for gaming.no smoke and mirrors if you game mainly intel chips are still the best option.if you do other things i would think about ryzen. if you a professional or want the best wait for x299
 
Panos said:
Yes Matt, I agree, but the 1800X supposed it have boost clock at 4Ghz. Not 3.7Ghz and getting beaten by it's own self (1800X) manually overclocked at 3.9Ghz.
Click to expand...
If I read the chart correctly in the AMD presentation just after post 10k the 4Ghz boost is on two cores only.
 
I was having a discussion about why SMT might cause issues on another forum,and it is mentioned in the Hardware.fr review:

http://www.hardware.fr/articles/956-22/retour-sous-systeme-memoire.html

What someone had to say about it:

According to that, one of the biggest issues for Ryzen in gaming (and some other workoads) is actual extremely high latency and low bandwidth between the CCXes, which is exacerbated in moderately threaded situations by Windows 10 regularly moving threads between cores. If a thread gets moved and its data is now in the other CCX's L3, it'll end up with a cache miss and a huge latency penalty getting that data back in.

Assuming 4C Ryzen works by completely deactivating one CCX (which seems logical given the halving of L3 cache as well) that won't be a problem for it - there won't be another CCX for threads to get migrated to. So part of the problem may be mitigated inherently by the method of harvesting dies...!

EDIT: looking at the SMT scaling you posted, it looks like Civ and GTA V are least affected, which I believe are the most CPU intensive games in that list? That would make sense if Windows 10 only moves threads in situations where cores are lightly loaded - put lots of load on the cores and no thread movement so no cache misses; lightly load the cores, more thread movement, more cache misses. That'd be easily fixable in driver or scheduler - simply tell the scheduler not to move active threads...!
Click to expand...

So it seems the 4C/8T models might actually less affected and it seems AMD launching this before proper Windows patches has caused the problem.
 
mattyc1977 said:
OR other option is sell the memory on the bay, send the 1800x and motherboard back, keep the 3770k @4.4ghz and change the 980ti for a 1080ti.... decisions decisions....
Click to expand...

I just upgraded from an i7 3770k @4.2 to a 7700k and 3200Mhz RAM and saw improvements which have been great/massive in Total War and Forza. But less so in some other games. I upgraded my GTX980 first to a 1080 in my order of priorities....
 
mattyc1977 said:
I'm a little worried and not sure what to do now. I have 2x16gb 3200 CL16 ddr4 memory I ordered 1 month ago so can't return, I have a 1800x arriving tomorrow and a asus crosshair coming soon and doesn't look like the memory will work and may never work! I'm seriously debating returning the new amd cpu and motherboard (if it ever arrives!) and ordering the 7700k.... I ONLY game..... FFS amd, you have let me down AGAIN!!
Click to expand...

The reality is, it wasn't a great deal better on Intel's side 3 years ago. Very few venders express the reality in which some of these memory speeds are achieved, or how likely it is consumers will be able to achieve them.
The very short version is auto ruling will hopefully improve as the platform matures, which means less intervention is required from whoever is sat behind the keyboard. The amount of variables present when overclocking memory high is in a class of it's own, and the rule sets used by the board vendors will eventually mature to a point where alignment is well met for most cases (CPU) as well as improved Microcode from AMD.
 
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