Soldato
- Joined
- 1 Jun 2014
- Posts
- 5,109
Not what I was interested in, but thanks for replying.I compared 2 8gb sticks v 4 8gb sticks and the 4 sticks were faster.
So fully populated seems best.
Not what I was interested in, but thanks for replying.I compared 2 8gb sticks v 4 8gb sticks and the 4 sticks were faster.
So fully populated seems best.
Yes, definitely harder. You tend to have to slacken TRDCRD by 1 and sometimes TRRD's need to be at 4,6 instead of 4,4. I've seen double sided sticks need twtrs settings at 5,14 as well. Definitely harder...but you do gain around 5% memory performance so sometimes its worth it.This is just a question borne out of curiosity more than anything else but, everything else being equal, are 2x16GB kits easier or harder to overclock than 2x8GB kits (or should they be the same)? Assume speed, latency/timings etc are the same.
MrPils tRCD14 and tRP11 settings were only to see if they would run and how they go in this bench and I would say far from stable.
Voltages used were
Vdimm 1.52
Soc 1.0625
Vddg ccd 1.0
Vddg iod 1.0
Vddp .95
ProcODT 28.2
MemCadBus 30 20 20 24
For stability testing my setup so far seems to need tRCD15 and CR2 with GDM off. Have passed TM5 with tRP12 but will test more tonight.
Also when looking to run tRCD14 , 15, 16 etc is this more the cpu than the ram sticks? Was looking to try another itx mb too for the 2 dimm slots
Sort of in topic
Ryzen memory scaling in games review by Guru3d
https://www.guru3d.com/articles-pages/amd-ryzen-ram-scaling-effect-in-games,9.html
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Both dual rank (and 4x8) configurations perform admirably at 3200 CL14
4x16GB 3200 CL14 beating 2x8 3733 CL14 IF 1:1 in all games.
I had no idea Ryzen likes dual rank so much.
Cheers, good to know!Yes, definitely harder. You tend to have to slacken TRDCRD by 1 and sometimes TRRD's need to be at 4,6 instead of 4,4. I've seen double sided sticks need twtrs settings at 5,14 as well. Definitely harder...but you do gain around 5% memory performance so sometimes its worth it.
There are not many such tests with dual rank and always done with Intel.It’s not that Ryzen specifically likes dual rank. It’s that rank interleaving is very strong for performance. That’s a memory architecture advantage and not cpu related. Same on Intel.
Finally managed to break 200 with my 8pack 3200/14 kit.
Interestingly unlike the 3900XTs gains there is quite a large performance regression with SMT disabled on a 3600.
Its about as big a boost as you get from going from dual to quad channel (+2.5%) on x99. That's pretty weird...I wonder what its doing? They're only using a 3700x so its not like it has two CCD's to do anything funky with.There are not many such tests with dual rank and always done with Intel.
Apprently Ryzen memory controller can take advantage of 8 ranks, this is the first time where I see 4x16GB have consistent advantage over 4x8 and 2x16GB.
It don't let me disable GDM unless I reduce the speed to 3600 or run 16s at 3800. I think your right about being at the limits of what I can get out of these as I'm already at 1.49v and don't really want to go higher but still pretty pleased given these are not the higher end 3600/14 kit.Well done dude, nice result. Congrats on reaching your goal too, its always good to actually achieve something you set out to and find a little more on top
Can you run GDM disabled with trcdrd 15 and twrrd 9? If not you haven't got much left to tune down there. TRC can go one lower (and therefore trfc 6 lower) with your current primaries and TRTP can come down to 5 but neither of those will rock your world and I don't see anything else that wouldn't need a big boot of voltage.
I'm beginning to wonder if these 8 pack sticks are optimised in some way for GDM and 2T, sacrificing some 1T ability along the way. Or maybe the Patriots are optimised for 1T with all those extra capacitors they have on the PCB and they are sacrificing GDM/2T ability? Honestly if the stability improvement allows TRCDRD 14 and TWRRD 8 with GDM enabled then that's probably worth it, I would expect that to be faster than a 1T setup at TRCDRD 15 and TWRRD 9. GDM and 2T gain me nothing in real stability with these Patriots yet 1T is decidedly easy.
It don't let me disable GDM unless I reduce the speed to 3600 or run 16s at 3800. I think your right about being at the limits of what I can get out of these as I'm already at 1.49v and don't really want to go higher but still pretty pleased given these are not the higher end 3600/14 kit.
Not sure if it's because of GDM but the SCLs stick at 2 on my B450.
Thanks for all the info you have put out in the thread MrPils.
Today I spent more time trying to pass TM5 at tRCD14 but not to be.
Settled on the below.
Bios setting
Vdimm 1.475
Soc. 1.08125 droops to just over 1.05
Vddg ccd .975
Vddg iod. 1.0
Vddp. .925
Not optimised no, but ill be starting at this and expecting it to be stable:Does anyone have some tried and tested settings to get the 2 x 16GB 3600MHz CL16 kit to 3733MHz CL14?
Wow, that's comprehensive. Thanks!
I'll be honest, I'm not looking to eek out every last morsel of performance because I just don't have the time. 3733MHz CL14 with stable settings would do me just fine.