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*Official* Intel DDR4 24/7 Memory Stability Thread - Page 421

post #4201 of 4441
Quote:
Originally Posted by Jpmboy View Post


lol- sorry, was busy playing with a new graphics card. redface.gif

If those settings are stable to gsat or HCi then great! the latencies (rtl iol) look fine. so, tRAS should be equal to the sum of Cas, tRCD and tRTP... which would be 14+14+12 for that config (=40). You can ruin -2 from there with confidence (38). To get tRAS low, you need ot lower tRTP significantly (4 is the min).
Forget the fast path (dram training) setting - leave it on auto.
Check the stability and see how she does.

The new TXP 2 right? biggrin.gif
Is that worth it over the previous one?
I need to see some benches later rolleyes.gif

So, let me see if I got you straight (yesterday evening I played some MEA with the "standard" factory 14-14-14-34-1T), you want me to try a 14-14-12 with tRas 34? Or 38 (or the previous 35)?
I know the older formula was like 5-5-5-15 (sum of the three) like, they were lower timings at that time (and low frequency) but now I can see they don't use this formula any longer.
I mean, increasing the tRas instead of lowering it will be giving me even more performance?

Edit:
Never mind, the factory 14-14-14-34-1T at 3200 will be enough for now so I'm gonna test it with Gsat and if there's still some room I'm gonna lower the vdram back to 1.35v.
Next step will be the cache to 3600 thumb.gifcool.gif

https://www.nexthardware.com/mobile/recensioni/gskill-trident-z-3200mhz-c14-32gb-1162/8/

https://www.nexthardware.com/repository/recensioni/1162/immagini/GSkill_Trident_Z_3200MHz_32GB_Larghezza_banda_OC_Cache_3600.jpg
Edited by arrow0309 - 4/8/17 at 3:45am
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post #4202 of 4441
Quote:
Originally Posted by Silent Scone View Post

What debug code is displayed, and what platform?

The System Agent voltage firstly if it's a memory issue.
Ugh, I'm thinking about it

Z270, and unfortunately my board doesn't have a debug led. (Asus Z270G)
post #4203 of 4441
Thread Starter 
Quote:
Originally Posted by wholeeo View Post

Z270, and unfortunately my board doesn't have a debug led. (Asus Z270G)
If it is indeed a DRAM issue (DRAM LED will be lit), try and adjust the SA voltage. Keep in mind too much can be as detrimental as too little, so if currently in auto you may wish to experiment. Only way to really know for sure is to soak test the system over time till training no longer fails
post #4204 of 4441
Is this 1h Gsat stressapp good enough?
Cause I've lowered the ram voltage to 1.35v (both) and I've run an hour easily at the above specs (3200 cl 14, 1T).
However I was playing this new Mass Effect and the pc crashed and got restarted in seconds (after about an hour or so).
I also had my txp overclocked (not too much), hell I need to run another 4h realbench this night (and before the cache oc).
And I've set the ram voltage back to 1.37v.
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post #4205 of 4441
1 hour should be good enough to make sure it is stable enough for booting and doing a few light tasks. I personally run multiple passes of GSAT for 6 hours for a production ready system, one corrupt bit can wreck everything.

You could go even longer if you wish, but a compromise has to be made over actually being overly cautious with regards to stability, and what level of stability you require from your system.
Edited by Desolutional - 4/8/17 at 4:15pm
post #4206 of 4441
Could someone recommend a course of action to get my RAM to clock higher? I'd happily loosen timings just to be able to post at all a higher frequency (will fix timings from there). I know I likely won't get much closer to my kit's rated speeds, but being binned better is how I got it this far.

The kit is G.SKILL 4x16GiB DDR4-3600 17-19-19-39 2T (Model F4-3600C17-16GTZKW)
Currently running DDR4-3200 12-13-12-24 2T, 250 tRFC, 32767 tREFI

Supporting hardware is i7-5960x 4.7GHz, 4.5GHz Cache, Motherboard ASUS RAMPAGE V EXTREME

The only memory controller related symptom I could alter seemingly was it was not stable at 3200 until I raised not my VCCIO or VCCSA, but actually the cache voltage. I bumped it up by 0.1v from stock and the problems melted away. But I am unable to post at anything above 3200. I tried exploring different BCLK straps to see if it was an issue with the RAM divider used, and tried an initial BCLK with a higher eventual BCLK to 'trick' it into training at a lower speed. VCCSA and VCCIO seem to have little effect, but will take a set of guidelines in the meantime as far as those 2 voltages and what one could consider appropriate for quad channel RAM higher than 3200MHz. Could also just be that HW-E doesn't want to run much faster and BW-E is the next step up as far as RAM speed capability goes.



post #4207 of 4441
Quote:
Originally Posted by ssateneth View Post

Could someone recommend a course of action to get my RAM to clock higher? I'd happily loosen timings just to be able to post at all a higher frequency (will fix timings from there). I know I likely won't get much closer to my kit's rated speeds, but being binned better is how I got it this far.

The kit is G.SKILL 4x16GiB DDR4-3600 17-19-19-39 2T (Model F4-3600C17-16GTZKW)
Currently running DDR4-3200 12-13-12-24 2T, 250 tRFC, 32767 tREFI

Supporting hardware is i7-5960x 4.7GHz, 4.5GHz Cache, Motherboard ASUS RAMPAGE V EXTREME

The only memory controller related symptom I could alter seemingly was it was not stable at 3200 until I raised not my VCCIO or VCCSA, but actually the cache voltage. I bumped it up by 0.1v from stock and the problems melted away. But I am unable to post at anything above 3200. I tried exploring different BCLK straps to see if it was an issue with the RAM divider used, and tried an initial BCLK with a higher eventual BCLK to 'trick' it into training at a lower speed. VCCSA and VCCIO seem to have little effect, but will take a set of guidelines in the meantime as far as those 2 voltages and what one could consider appropriate for quad channel RAM higher than 3200MHz. Could also just be that HW-E doesn't want to run much faster and BW-E is the next step up as far as RAM speed capability goes.

Hello

Post up a screenshot of HCI as outlined in the first post of this thread with the timings/speed stated above as a baseline to start from.
post #4208 of 4441
Quote:
Originally Posted by Desolutional View Post

1 hour should be good enough to make sure it is stable enough for booting and doing a few light tasks. I personally run multiple passes of GSAT for 6 hours for a production ready system, one corrupt bit can wreck everything.

You could go even longer if you wish, but a compromise has to be made over actually being overly cautious with regards to stability, and what level of stability you require from your system.

It crashed during gaming because it wasn't stable even with an hour Gsat (next one will be running on a dedicated ssd with Linux Mint), it crashed after a couple of min during the 4h run of Real bench, increased the vtt to 1.100v and it lasted ~30'.
Now I've raised it to 1.125v and the SA from 1.00 to 1.10v (+0.020v).
Let's see if is gonna work now
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post #4209 of 4441
Quote:
Originally Posted by Praz View Post

Hello

Post up a screenshot of HCI as outlined in the first post of this thread with the timings/speed stated above as a baseline to start from.

Working on the HCI right now. I saw HCI released 5.0 of their memtest, and it is MUCH faster than 4.0 (about twice as fast for me), but the DRAM power usage is about the same (40 watts on 4.0, 41.5 watts on 5.0)

Using Dang Wang version to batch it nicely (had to put the 5.0 copy inside the %temp% directly and make it read only so Dang Wang Version doesn't overwrite it with 4.0), hopefully gskill has an updated GUI since the monitor tab seems to be a little glitchy.

(and yes, i do own the pro version, no worries of piracy here)
Edited by ssateneth - 4/8/17 at 10:15pm
post #4210 of 4441
Thread Starter 
Quote:
Originally Posted by ssateneth View Post

Working on the HCI right now. I saw HCI released 5.0 of their memtest, and it is MUCH faster than 4.0 (about twice as fast for me), but the DRAM power usage is about the same (40 watts on 4.0, 41.5 watts on 5.0)

Using Dang Wang version to batch it nicely (had to put the 5.0 copy inside the %temp% directly and make it read only so Dang Wang Version doesn't overwrite it with 4.0), hopefully gskill has an updated GUI since the monitor tab seems to be a little glitchy.

(and yes, i do own the pro version, no worries of piracy here)

I noticed this last week. Will add this information to the op regarding the coverage speed
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