Slight memory speed upgrade... 16GB Patriot Viper Steel DDR4 Kit

[storm-chaser]

I made an offer of $90.00 for this 16GB 4133MHz DDR4 kit, and the guy went for it. So this will replace the 16GB G.Skill kit that's currently installed in the machine.

G.Skill on the left and Patriot on the right (yes, it has two XMP profiles) ....

Patriot Viper Steel specs according to Thaiphoon Burner...

First attempt at lowering the timings...
Stock: 19-21-21-41 CR2 (49 ns in AIDA64)
Adjustment:
18-21-21-41 CR2

17-17-17-35 CR2 @ 4133MHz...

 

[jesdals]

Nice KIT. I have the 4000MHz version and run them at CL15 Trcd 14 Trp 12 Tras 28 Trc 40 and Trcf 270 command Rate 1, at 3733MHz (max for my Infinity fabric) with 1.45 volt

 

[storm-chaser]

Nice KIT. I have the 4000MHz version and run them at CL15 Trcd 14 Trp 12 Tras 28 Trc 40 and Trcf 270 command Rate 1, at 3733MHz (max for my Infinity fabric) with 1.45 volt

So here we are at 17-17-17-35... stock voltage
I tried 4133 @ CL16 and it was a no go... so we will remain at CL17... something like this:

This is most likely where we will keep it...

 

[birdie]

Is it only stable in Aida64? I mean I can get similar timings only the system will crash each 3 seconds.

Run at least two passes of memtest86 from boot media then report your timings.

 

[storm-chaser]

Is it only stable in Aida64? I mean I can get similar timings only the system will crash each 3 seconds.

Run at least two passes of memtest86 from boot media then report your timings.

Yes reliability is not established yet... only that it posts. I will be running some tests today to see if we can remain at these timings. I can always back down to 4000MHz and try for CL16 as well...

 

[Waldorf]

Wanted a 4000 kit to run@3600 with low timings, but not paying for those CL14 kits (if they had stock) with similar chip/perf,
so i got the 4000CL19 Viper Blackout for 90$.
now doing 3600/15-15-15-15-30/46@1.38v (bios set to 1.35v, as Gb boards add 0.03v), sub timings according to ryzen ram calc (fast profile).
will try to lower timings a bit more, just wanted to get a stable setup so i can use the rig for now...


@birdie
memtest86 is good for first setup/testing basic functionality, but not good enough for "oc" stability tests, e.g. running above 2133 .
i had run v8.4 two times (4 passes each), all finishing without a single error, and TM5 showed one within 20min (no change on anything).


@storm-chaser
yeah, profile 2 is "extreme" (not certified) for rigs having trouble with 4000MHz (amd..),
but sub timings don't change with it either, so manually setting them (especially at lower speeds) is a must,
to really get everything out of those..




mem testers, from what tabascosauz hat posted, when i wanted to know what i can use for mine running at 3600:

HCI: https://hcidesign.com/memtest/
TM5: https://testmem.tz.ru/tm5.rar
anta777 .cfg: https://drive.google.com/file/d/1uegPn9ZuUoWxOssCP4PjMjGW9eC_1VJA/edit
Stock config for TM5 ppl don't generally use, you take the anta777 cfg file, rename it to MT.cfg, and replace in the /bin folder the file with the same name.
I still use HCI to double check, but TM5 is much faster. Also free version of HCI forces you to run a bunch of parallel instances of 3GB to fill up your ram, so there's that.