Ryzen "X" SKU's vs Non-"X" SKU's

[kreechrr]

Anyone care to validate a theory I have on why the Ryzen 1700 may overclock worse than a 1700x? My command rate is 2T but, at very least, the reviews I've seen of an 1800x lists that untouchable command rate at 1T...

[Megah3rtz]

34 minutes ago, Create585 said:

Anyone care to validate a theory I have on why the Ryzen 1700 may overclock worse than a 1700x? My command rate is 2T but, at very least, the reviews I've seen of an 1800x lists that untouchable command rate at 1T...

From what I've seen everywhere the X chips just have XFR enabled, no binning here 

[xAcid9]

5 minutes ago, Megah3rtz said:

From what I've seen everywhere the X chips just have XFR enabled, no binning here 

If i recall correctly all Ryzen have XFR enabled but the X chip will boost 100mhz extra while non-X only 50mhz.

[Crowes]

1 minute ago, xAcid9 said:

If i recall correctly all Ryzen have XFR enabled but the X chip will boost 100mhz extra while non-X only 50mhz.

That seems really pointless.

[porina]

35 minutes ago, Create585 said:

Anyone care to validate a theory I have on why the Ryzen 1700 may overclock worse than a 1700x? My command rate is 2T but, at very least, the reviews I've seen of an 1800x lists that untouchable command rate at 1T...

Do you get an option to change it in your bios? From what I've seen, on some mobo models they even offered different bios with the CR value fixed at either 1 or 2. I think my Asus X370 is fixed at 2T.

1 minute ago, Megah3rtz said:

From what I've seen everywhere the X chips just have XFR enabled, no binning here 

I frequent another OC orientated forum, and the 1700's hit the wall on average some hundreds of MHz before 1800X does. AMD are really running the top models close to the limit already though.

[kreechrr]

2 minutes ago, porina said:

Do you get an option to change it in your bios? From what I've seen, on some mobo models they even offered different bios with the CR value fixed at either 1 or 2. I think my Asus X370 is fixed at 2T.

I frequent another OC orientated forum, and the 1700's hit the wall on average some hundreds of MHz before 1800X does. AMD are really running the top models close to the limit already though.

 

no option I know on any ryzen bios.. thats why I am curious. I used HWinfo64 to see my command rate. 

10 minutes ago, Megah3rtz said:

I'm sorry for your loss. 

 

 

what? 

[SCHISCHKA]

im really not seeing any reason to pay extra for the X. Actually Im not seeing any reason to buy anything other than the 1700, and i cant remember which ryzen 5 was the best deal. One has a bigger cache.

[kreechrr]

37 minutes ago, SCHISCHKA said:

im really not seeing any reason to pay extra for the X. Actually Im not seeing any reason to buy anything other than the 1700, and i cant remember which ryzen 5 was the best deal. One has a bigger cache.

I'm mostly curious if that's why they're "x" sku's.. since ryzen's infinity fabric is so tied to DDR4 speed, maybe the defining factor is how well they get the command rate down? Then again, my memory kit is dual rank so that's also a probable factor. I did see that one techtubers 1800x at 4GHz and 2933MHz on ram still didn't break 1700 in cinebench... my rig avg cinebench score is 1650. So I hear the arguement not to buy X chips strongly.

[SCHISCHKA]

17 minutes ago, Create585 said:

I'm mostly curious if that's why they're "x" sku's.. since ryzen's infinity fabric is so tied to DDR4 speed, maybe the defining factor is how well they get the command rate down? Then again, my memory kit is dual rank so that's also a probable factor. I did see that one techtubers 1800x at 4GHz and 2933MHz on ram still didn't break 1700 in cinebench... my rig avg cinebench score is 1650. So I hear the arguement not to buy X chips strongly.

im following this thread to find out the same as you. im not seeing convincing evidence in my own web surfing adventures. I wont be buying Ryzen untill Ubuntu 18.04 comes out or I might get the new APU if they perform awesomely. I'm hoping the new APU is awesome and can crossfire my balls off; if not i think i will keep my pants on for another year.

 

Theres still motherboard updates coming out with issues across all SKUs

[DrMikeNZ]

2 hours ago, Create585 said:

I'm mostly curious if that's why they're "x" sku's.. since ryzen's infinity fabric is so tied to DDR4 speed, maybe the defining factor is how well they get the command rate down? Then again, my memory kit is dual rank so that's also a probable factor. I did see that one techtubers 1800x at 4GHz and 2933MHz on ram still didn't break 1700 in cinebench... my rig avg cinebench score is 1650. So I hear the arguement not to buy X chips strongly.

I get 1650-1660 on Cinebench with my 1700 at 3.8Ghz with 2400MHz RAM.

I am not sure if this is the best benchmark to use though as real-world performance in my workstation tasks are much less amazing, more disappointing. For example, x265 encoding isn't much faster than my old i7 3930K @3.6GHz which only has ~850 in cinebench, and about half the speed of my i7 6900K which only gets ~1560 in cinebench.

[porina]

4 hours ago, Create585 said:

no option I know on any ryzen bios.. thats why I am curious. I used HWinfo64 to see my command rate. 

I got confused earlier, Ryzen systems typically run 1T, but there is/was bios for some mobos with baked in 2T. I've been unable to find which mobo that was in a quick search. Dunno if it helped with ram OC headroom at all as I never looked into it that far.

[kreechrr]

37 minutes ago, DrMikeNZ said:

I get 1650-1660 on Cinebench with my 1700 at 3.8Ghz with 2400MHz RAM.

I am not sure if this is the best benchmark to use though as real-world performance in my workstation tasks are much less amazing, more disappointing. For example, x265 encoding isn't much faster than my old i7 3930K @3.6GHz which only has ~850 in cinebench, and about half the speed of my i7 6900K which only gets ~1560 in cinebench.

 

yeah thats about what I get. I would've stayed at 3.9 GHz, but temps were far too high for my preferences. Thanks for the info though. I have since come across (other forums, don't tell Linus) stores of ROG Crosshair VI also being on 1T. It must be a bios limit as asus is known for OC and solid BIOS UEFI's

[DrMikeNZ]

4 minutes ago, Create585 said:

yeah thats about what I get. I would've stayed at 3.9 GHz, but temps were far too high for my preferences. Thanks for the info though. I have since come across (other forums, don't tell Linus) stores of ROG Crosshair VI also being on 1T. It must be a bios limit as asus is known for OC and solid BIOS UEFI's

Temperature was not an issue for me, under full load it only gets to ~45°C. Although I saw zero performance increase from 3.6GHz to 3.8GHz in my workload so didn't see any benefit pushing it further.

Command rate is most likely set automatically based on the installed RAM. I have not seen this as a user configurable setting in my BIOS (Gigabyte AX370 Gaming 5).

I am running Corsair Vengeance LPX 2x8GB 2400MHz CL14 RAM, CR is 1T.

[AkatsukiKun]

You can OC  the difference between the X and non X skus. But if there's something true about processes, is that if you don't mind waiting for some time don't know when.

I figure they might do a slight refresh with Zen but not call it Zen+ where the process is more mature, you can get better OC.