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

TheBiznes said:
AMD just posted this probably to clear up all rumors of memory performance being difficult to achieve.

It’s #MemoryOverclockMonday so here’s the Ryzen 7 1700 running DDR4-3400. Enjoy!

https://twitter.com/AMDRyzen/status/836285599636127744

C5sU_VhUoAEXbLU.jpg
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On the ASUS Crosshair VI Hero... the board we already knew it would work at high speeds at after Gibbo's very first post about memory speed and Ryzen... it's the non-high end boards that were meant to be struggling.
 
Panos said:
Hmm another Crosshair Hero. hmmm. But they could have done better with the card. Thats an RX480 reference.



Possibly, because already few pages back they were listing new BIOS uploads for many mobos and all of them related to RAM.
Click to expand...


thanks must have missed that. This thread moves so fast i have given up reading post to post :)
 
TheBiznes said:
Here is a link if you really want to see it.
It may have been embarrassing or under NDA still.
https://r13---sn-5hne6n7r.googlevide...488220763&mv=m
Click to expand...

Linky not worky :( .

TheBiznes said:
AMD just posted this probably to clear up all rumors of memory performance being difficult to achieve.

It’s #MemoryOverclockMonday so here’s the Ryzen 7 1700 running DDR4-3400. Enjoy!

https://twitter.com/AMDRyzen/status/836285599636127744

C5sU_VhUoAEXbLU.jpg
Click to expand...

Cheers for that :D , damn have been eyeing up CH6, making not harder not to buy it!
 
High speed Memory support via bios is all to do with the Imc and the Subtimings, Manual memory overclocking for people like myself who know what they are doing will really tell how good the Imc is.
Just posting a picture of cpu-z with pretty loose cl 18 timings doesn't tell us anything when a 3200 cl14 has much better timings. We need to plot performance gains to see at what frequency and timings the Imc reaches it's sweet spot, much like tuning the cpu-nb on the phenom II. Then the mythbuster over the capability of the Imc can finally be conclusive,
 
There has to be something different apart from clock speed with the 1700 compared with the 1700X. Why would a 3.7GHz Max boost be 65w TDP and a 3.8GHz Max boost be 95w? That's a huge difference for just 100MHz
 
Outcasst said:
There has to be something different apart from clock speed with the 1700 compared with the 1700X. Why would a 3.7GHz Max boost be 65w TDP and a 3.8GHz Max boost be 95w? That's a huge difference for just 100MHz
Click to expand...

In that Ryzen part San fran video, they mentioned that the 1800x used a 3.6 base, 3.7 all core boost and 4.1 single core boost.
I expect the all core boost on the 1700 is much less than 3.7ghz.
 
Davedree said:
Just posting a picture of cpu-z with pretty loose cl 18 timings doesn't tell us anything when a 3200 cl14 has much better timings. We need to plot performance gains to see at what frequency and timings the Imc reaches it's sweet spot, much like tuning the cpu-nb on the phenom II. Then the mythbuster over the capability of the Imc can finally be conclusive,
Click to expand...

Pretty much this. CPU-Z validations can be made with very conditional stability.
That said, ASUS recently have already updated their speed validations due to firmware improvements on lower SKU. I would still recommend you opt for a high tier board like the Crossfire if you want to achieve these speeds.

Those with a keener eye will have noticed that 3400Mhz C18 isn't actually a bin GSKILL do currently, it's actually quite lax on the latency front.
One reason for this is because current kits which were validated on Intel platforms do not have sufficient guardband to operate on other platforms at the rated speed and timings. In fact those in the habit of all things overclocking are binning 4Ghz Intel kits to achieve fair latency settings and stability consistently at 3000 and above. This will improve as more kits are validated for more board. 2666-3000 is the best chance of plug and play, and even then - I think less experienced folks will struggle to dial in certain kits.

amigafan2003 said:
Silent_Socne is going to have to start looking for a new system.
Click to expand...

lol, nope I'm safe. For now ;)
 
Last edited:
harney said:
I all ready posted this a while back and solved the X problem ..

X chips as per the diagram will move data in an X fashion

AMD-Ryzen-Slide-1.jpg


non X chips move the data in a Z fashion

:p
Click to expand...
So you are saying that 1700x and 1800x will have higher multithread performance at same clocks as 1700? Will be interesting to see reviews.
 
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