16GB RAM modules on X470

Hardware
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21

So after a bit of playing around, 3200 @ tightened timings is hard. But it seems easy enough to tighten timings by upping the clockspeed on the RAM and letting the motherboard adjust the timings automatically.

cachemem3400cl14test
cachemem3400cl14test.png663x638 72.5 KB
3400cl14
3400cl14.png642x954 49.4 KB

To achieve the above (unsure if stable just yet, will let you know when i’ve had time to check) I set the below manually and the left the rest.
CPU LLC: lvl2
Current capability: 120%
VDDSOC LLC: lvl2
Current capability: 120%

Clocks: 3400mhz
DRAM Voltage: 1.36v
tCL: 14
tRCDWR: 14
rRCDRD:14
tRP: 14
tRAS: 34
tRC: 50
CMD2T: 1T

1 Like
22

@Delta9K @sceps

Final overclock.

3400cl14fasterest
3400cl14fasterest.png636x954 46.1 KB

cachemem3400cl14fasterest
cachemem3400cl14fasterest.png663x638 72.5 KB

Pretty happy, seems comparable with the single rank stuff… Maybe I got lucky?

2 Likes
23

The big difference vs. single rank is when you try to populate all 4 slots as i understand it.

2x16 isn’t that bad.

24

yeah that certainly seems to be the case, I wonder if the benefits of rank interleaving make going with a 2x16gb kit a decent choice if you want 32gb now? I’ve seen some people struggle with the 4x8gb single rank kits…

25

I went 2x16 for future expansion to 64. But yeah seems to work OK. My system seems faster in firestrike than “comparable systems” :smiley:

And those comparable systems are overclocked (on air, it would appear), mine isn’t.

1 Like
26

Here’s the result for the curious… R7 2700X, dual 16 GB modules running at 2800, crossfire vega64 reference:

27

yeah I think there might be something to it - vs comparable systems mine did pretty well too.

1 Like
28

Can you run firestrike ultra? Wouldn’t mind seeing if the CPU scores remain the same…

29

I can, i may have, even. Would need to check, but i’m not at home at the moment.

30

No worries, whoever gets to it first :slight_smile: i should have a chance this weekend - am away for work at the moment.

31

OK ran firestrike ultra

Overall: 9528
Graphics: 10338
Physics: 19727
Combined: 4032

2x Vega 64
Dual rank 2x 16 GB Trident Z DDR4-3000 non-RGB @ 2866
Ryzen 2700X on X470 Taichi

1 Like
32

I am using a MSI X470 Gaming Plus with a 16gb G.Skill Aegis dual ram kit, works just fine

33

Do you know if it’s the memory or the motherboard (or your IMC…) that’s holding you back from 3000 ?

That sounds like 2 x 8GB (single rank) modules. This thread is about 16GB (dual rank) modules.

34

I suspect it is the memory/timings.

It’s a non QVL kit, i haven’t got any other RAM to test stuff with.

I haven’t tried too hard (well, not really at all with this bios, literally just changing the clock so far). Stock voltage, etc.

My timings are something like 15-15-15-35. I’m not too fussed with chasing extreme speeds. anything above 3000 is diminishing returns on Ryzen and i’m getting close now.

1 Like
35

I was surprised at the difference in CPU performance just going from 3200 average timing to 3400 and tight timings to be honest, I tested the difference in mining lyra2z - got around 880Mh/s @ default 3200 timings. Consistent 1000mh/s @ 3400. Same power draw as well.

I didn’t have much luck with the DRAM calculator. Much better off just setting the main timings and pushing the clocks a bit, then when you hit a wall start tightening up the subtimings.

Did a standard firestrike test. Almost an identical physics score for me.

36

@myshadow
NICE!

37

Not too bad at all :slight_smile: how did you go with yours?

38

i just migrated my linux workstation to
asrock taichi ultimate x470
with gskill 4x16GB ram - i picked this sticks, since one swiss shop had them some weeks ago in special sale (got 4 for the price of 2,5 as i originally anyway wanted to get 2x16, but got lucky)
in bios i just took the XMP profile, which showed as option and set the speed to 3200 as suggested - works out of the box
here lshw -C memory output:

       description: System Memory
       physical id: e
       slot: System board or motherboard
       size: 64GiB
     *-bank:0
          description: DIMM DDR4 Synchronous Unbuffered (Unregistered) 3200 MHz (0.3 ns)
          product: F4-3200C15-16GVR
          vendor: Unknown
          physical id: 0
          serial: 00000000
          slot: DIMM 0
          size: 16GiB
          width: 64 bits
          clock: 3200MHz (0.3ns)
     *-bank:1
          description: DIMM DDR4 Synchronous Unbuffered (Unregistered) 3200 MHz (0.3 ns)
          product: F4-3200C15-16GVR
          vendor: Unknown
          physical id: 1
          serial: 00000000
          slot: DIMM 1
          size: 16GiB
          width: 64 bits
          clock: 3200MHz (0.3ns)
     *-bank:2
          description: DIMM DDR4 Synchronous Unbuffered (Unregistered) 3200 MHz (0.3 ns)
          product: F4-3200C15-16GVR
          vendor: Unknown
          physical id: 2
          serial: 00000000
          slot: DIMM 0
          size: 16GiB
          width: 64 bits
          clock: 3200MHz (0.3ns)
     *-bank:3
          description: DIMM DDR4 Synchronous Unbuffered (Unregistered) 3200 MHz (0.3 ns)
          product: F4-3200C15-16GVR
          vendor: Unknown
          physical id: 3
          serial: 00000000
          slot: DIMM 1
          size: 16GiB
          width: 64 bits
          clock: 3200MHz (0.3ns)

EDIT:
zu früh gefreut :slight_smile: somehow the 3200 15 15 15 35 that the sticks XMP profile shows causes segfaults while using all 16 cores on some heavy computing. i reduced now to 2933 16 16 16 36 and trying stress tests to see if this is better… hmm

EDIT2:
yep, that did the trick: no segfaults for 15 min under heavy computing and compiling at the same time. since here in europe, we are having a heatwave since weeks and will be another week for sure, i will stop heating my office more doing stress tests :wink: - if someone wants me to test something, let me know (linux; windows and macos only in virtualboxes)

2 Likes
39

What is the model number of these, please?