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  Topic Review (Newest First)
04-09-2020 06:45 AM
KevyMatts Hi guys

@Veii was helping me out.

I'm still gettings errors running TM5 but not Karhu.

Any suggestions

thanks
04-09-2020 06:39 AM
hazium233
Quote: Originally Posted by 2600ryzen View Post
Is it better for TRP to be lower than TRCDRD or the other way around? Depending on TRDWR I can run TRCDRD/TRP at either 16/17 or 17/16.
Assuming they are both stable, I am not so sure the difference would matter in practice. I would wonder if this is a real dependency, or has to do with minimum row cycle.

Lower tRCDRD would have a little bit better latency to first word for page empty. Otherwise, it should be the same.
04-08-2020 01:25 PM
2600ryzen Is it better for TRP to be lower than TRCDRD or the other way around? Depending on TRDWR I can run TRCDRD/TRP at either 16/17 or 17/16.
04-08-2020 01:05 PM
hazium233
Quote: Originally Posted by 2600ryzen View Post
GDM means your IMC is still running at 1t though doesn't it? I get better bandwidth and I think lower intercore latency with GDM enabled and it feels faster(dragging a windows around the desktop is much smoother and easier to read the window contents with GDM). With 2t I get worse bandwidth but better RAM latency.
Sort of, it overrides the command rate setting. The command / address is running at 1/4 data rate or "twice as slow" as the clock, and commands only go in on even clocks as a result. Been referred to as "1.5t" sometimes.

There is a little article about it here. *There is a bit on the reddit wiki too.

Quote: Originally Posted by 2600ryzen View Post
Anything I could do to reduce TRCDRD/TRP, and also wondering if I set TRFC correctly - I used 9 x TRC because 8 x TRC wouldn't post. Also how do I set TRFC2/4? Are they a multiple of TRC too?
This is 25nm Spectek A-die, it's mean to be [email protected] but my motherboard can't post above 2933mhz.
I don't know enough about Rev A (either the 4Gb or 8Gb). For the other 8Gb Micron revisions (B, D, E..) tRCDRD usually seems to have pretty limited voltage scaling. So you can try extra vdimm, but it may not work in a practical range of voltage.

Another voltage that might be worth attempting is VPP Mem (default 2.5) in steps up to 2.525 or 2.53.
04-08-2020 10:13 AM
2600ryzen Anything I could do to reduce TRCDRD/TRP, and also wondering if I set TRFC correctly - I used 9 x TRC because 8 x TRC wouldn't post. Also how do I set TRFC2/4? Are they a multiple of TRC too?
This is 25nm Spectek A-die, it's mean to be [email protected] but my motherboard can't post above 2933mhz.
04-08-2020 08:56 AM
2600ryzen
Quote: Originally Posted by Veii View Post
Very sure, you don't see hidden delay but GDM does round up odd timings
And GDM uses tCKE where tRFC2 and tRFC4 accuracy start to play a big role
Also tCWL=tCL with GDM enabled
Far better to have it off - it's annoying enabled

But 3200MT/s is not high at all for 2nd gen, 3600-3733 should be your focus
If you read the #4 on the FW Collection thread, it shows a demonstration example how it will look and what it does
This is a clean SPI flash, which means everything including any kind of serial number will be wiped - soo a backup is important for warranty purposes and for transferring serial number + mac adress
In short, keeping warranty up ~ because it's a hardware clean flash, no traces left

Unless you can run tCL 12 on 3200 or 3400, there is no reason to stay with 3200CL14
It makes more sense to up it to 3400-3600 MT/s at least

GDM means your IMC is still running at 1t though doesn't it? I get better bandwidth and I think lower intercore latency with GDM enabled and it feels faster(dragging a windows around the desktop is much smoother and easier to read the window contents with GDM). With 2t I get worse bandwidth but better RAM latency.
04-08-2020 07:44 AM
Redwoodz
Quote: Originally Posted by nick name View Post
For whatever reason I get much more DRAM voltage droop (at least as HWiNFO reports) than I did with my 2700X. It was pretty much non-existent with the 2700X. 1.5V droops to 1.48V and it wasn't something I noticed during my initial testing. Makes me wonder if it may have been the culprit for some of my overnight test errors.
Quote: Originally Posted by rares495 View Post
I never checked this but it could be the cause of my error as well.
Your VDDPv will affect this I believe.

Quote: Originally Posted by yrelbirb View Post
do you mind if i ask how your ryzen died?
Hey bud don't worry about 1.5v. YOU WILL NEVER DEGRADE your cpu with boost frequencies & voltage. Heat induced by high power draw is where you will degrade your chip.If it is boosting it is not under load. That's how it works.

Secondly your monitoring software does not work fast enough to show you all of the minute adjustment in power every millisecond. A thousand times per second.

Thirdly remember after you get everything in bios set Windows can change your power plan behavior. Make sure you have Windows power plan set to performance or whatever you wish.

I simply set a manual over clock and enable Cool & Quiet. Works great.
04-08-2020 07:33 AM
Veii
Quote: Originally Posted by yrelbirb View Post
do you mind if i ask how your ryzen died?
IMC died, by overcurrent spike of my old PSU
House surge installation was triggered by my roommate, the anti shock surge one
(idk the name of it)
Soo by the forced loss of power and later turned on one, my powersupply did sacrifice itself, but it took the memory controller with it
It was mid TM5 test, soo full 1.15v was into it
I was testing if i can get 3600 stable, but this needed 1.175v SOC on 1st gen

This tiny 50mV more or how much more leaked, killed the memory controller of it
Actually it did work for 2 days, first taichi stopped recognizing it but i could still get my place on SiSandra with the modded tomahawk
Later on the next day after another coldboot , it fully said bye
Soo degredation for 24-48hours by this overcurrent spike while full load was applied
Served me well this tiny cpu
Was lapped, and the first batch which retailed for 350ish bucks
Soo also a horrible overclocker and still good toy
04-08-2020 07:05 AM
yrelbirb
Quote: Originally Posted by Veii View Post
https://www.overclock.net/forum/13-a...l#post28395252
^
For presets , you have pretested ones by 1usmus
He has the kits infront of him, and can do the test
I can only teach what i learned by myself ~ my current ryzen is dead
But this sheet is not ready
The only collection of information i can give is this post:
https://www.overclock.net/forum/11-a...l#post28246564

Else you can find enough resources here:
https://github.com/integralfx/MemTes...ob/master/DDR4 OC Guide.md
and
https://reddit.com/r/overclocking/co...g_on_ryzen_oc/
^ for explaining timings
The manual mode way you can use 1usmus advices on techpowerup
and this is the reddit OPs personal method for lowering latency
https://docs.google.com/document/d/1...it?usp=sharing

My methods are different and more math focused - but flawed
Flawed because i still don't know the exact timings movement steps between each timing, to fully switch to ns only
so far it's an ETA method for calculation with tRFC being quite fine, but also not perfect because it misses exact tSTAG calculation (that depends on layers and PCB revision)

Long posts are there to teach people and simplify things
Above linked resources are explained and recommended methods
At the end you have to learn it yourself, not depend on gifted timings
1usmus gifts timings on his calculator if you want gifts
But it's still recommended to learn it by yourself, not count on others

do you mind if i ask how your ryzen died?
04-08-2020 07:03 AM
Veii
Quote: Originally Posted by rastaviper View Post
@Veii have u considered creating a shared excel file where u will include all these different combinations for Tras, Tcke etc
I think it will save u a massive amount of time from writing all the timings every time by hand.
U could easily assign different timings depending on the layout (A0, A1 etc) for different freq (3200, 3400 etc)

Personally I tried to keep up with your recommendations but I got lost with all the long posts.
https://www.overclock.net/forum/13-a...l#post28395252
^
For presets , you have pretested ones by 1usmus
He has the kits infront of him, and can do the test
I can only teach what i learned by myself ~ my current ryzen is dead
But this sheet is not ready
The only collection of information i can give is this post:
https://www.overclock.net/forum/11-a...l#post28246564

Else you can find enough resources here:
https://github.com/integralfx/MemTes...R4 OC Guide.md
and
https://reddit.com/r/overclocking/co...g_on_ryzen_oc/
^ for explaining timings
The manual mode way you can use 1usmus advices on techpowerup
and this is the reddit OPs personal method for lowering latency
https://docs.google.com/document/d/1...it?usp=sharing

My methods are different and more math focused - but flawed
Flawed because i still don't know the exact timings movement steps between each timing, to fully switch to ns only
so far it's an ETA method for calculation with tRFC being quite fine, but also not perfect because it misses exact tSTAG calculation (that depends on layers and PCB revision)

Long posts are there to teach people and simplify things
Above linked resources are explained and recommended methods
At the end you have to learn it yourself, not depend on gifted timings
1usmus gifts timings on his calculator if you want gifts
But it's still recommended to learn it by yourself, not count on others
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