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Ryzen 3000 RAM Scaling strange behaviour [Lower scores]

 
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post #1 of 7 (permalink) Old 08-01-2019, 01:00 AM - Thread Starter
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Ryzen 3000 RAM Scaling strange behaviour [Lower scores]

Hello guys,
I'm triing to find the sweet spof of my config about RAM, but I'm going crazy, my hardware is:
- Ryzen 3700x
- Asus x470 Strix F bios 5007 (agesa 1.0.0.2)
- KFA2 HOF DDR4 4000CL19 (B-Die)
To isolate RAM performance I've setted up fixed OC to 4.1GHz, windows 1903 and drivers 1.07.07 and always set to 1:1 FCLK/RAM.

Following the Ryzen Dram Calculator I've validated 3 configs, all them stable (Testmem5 + 1000%HCI):
- [email protected] (Fast Presset) 1.365vRam 1.025vSoc
- [email protected] (Fast Presset) 1.395vRam 1.1vSoc
- [email protected] (Safe Presset) 1.450vRam 1.1vSoc

Those are my results:



As you can see, I see little gains on Cinebench, more or less the same on 3DMark CPU TimeSpy (each run goes 100-200up/down) and losing perf on some tests of Realbench...

My first concert was about stability, but as far as I know, with 1000% HCI + TestMem5 1smus_v3 config is RAM stable, and about CPU is also stable for 30min of prime + 2h realbench stress test.

How can I understand this behaviour? Shouldn't be 3600 config outperforming all the rest?
[email protected] config is exactly the same timmings as 3200, but with more voltage, how can this be giving lower results on some test vs 3200 config?

PhanteksR7
(16 items)
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RTX 2070 Windforce OC
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KFA2 HOF Extreme DDR4 4000CL19 BDie
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post #2 of 7 (permalink) Old 08-01-2019, 11:04 AM
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I would dial down the CPU, shoot for low temps, base speed. I know this CPU will throttle and not show a frequency drop when doing a negative Vcore. I'm not saying that is for sure the issue, but best to eliminate that variable. Verify that you get the results you expect and go from there. Also, try different interleaving sizes with each speed, it can be a detriment for higher speed higher latency ram to be using a tiny interleave size.

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post #3 of 7 (permalink) Old 08-02-2019, 01:02 AM - Thread Starter
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Quote: Originally Posted by almstsobur View Post
I would dial down the CPU, shoot for low temps, base speed. I know this CPU will throttle and not show a frequency drop when doing a negative Vcore. I'm not saying that is for sure the issue, but best to eliminate that variable. Verify that you get the results you expect and go from there. Also, try different interleaving sizes with each speed, it can be a detriment for higher speed higher latency ram to be using a tiny interleave size.
Good advice, I'll try it and post results

PhanteksR7
(16 items)
CPU
Ryzen R7 3700x
Motherboard
Asus x470 Strix F
GPU
RTX 2070 Windforce OC
RAM
KFA2 HOF Extreme DDR4 4000CL19 BDie
Hard Drive
Samsung 970EvoPlus 500GB NVMe
Hard Drive
Samsung 850Pro 512GB
Hard Drive
Samsung 860QVO 2TB
Power Supply
Seasonic Focus+ 650W Platinium
Cooling
Noctua NH-U12P
Case
Phanteks Enthoo Pro M SE
Operating System
Windows 10 PRO
Monitor
Samsung C24FG70
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post #4 of 7 (permalink) Old 08-02-2019, 01:19 AM
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Quote: Originally Posted by rul3s View Post
Good advice, I'll try it and post results
No 3466 CL14 setting? In Gen 1 and +, 3466 CL14 is the sweetest spot.

[email protected] 6 http://valid.canardpc.com/show_oc.php?id=2211392 4.6 @ 4 http://valid.canardpc.com/show_oc.php?id=2216580
5.0 @ 8 http://valid.canardpc.com/show_oc.php?id=2511322
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post #5 of 7 (permalink) Old 08-02-2019, 02:17 AM - Thread Starter
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Quote: Originally Posted by rdr09 View Post
No 3466 CL14 setting? In Gen 1 and +, 3466 CL14 is the sweetest spot.
The highest I can go with CL14-14-14-14-28-42 is 3333, thats my reference point.

Now I'm testing [email protected], with other subtimmings from another user, it's going very well, i'll post results

PhanteksR7
(16 items)
CPU
Ryzen R7 3700x
Motherboard
Asus x470 Strix F
GPU
RTX 2070 Windforce OC
RAM
KFA2 HOF Extreme DDR4 4000CL19 BDie
Hard Drive
Samsung 970EvoPlus 500GB NVMe
Hard Drive
Samsung 850Pro 512GB
Hard Drive
Samsung 860QVO 2TB
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Noctua NH-U12P
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post #6 of 7 (permalink) Old 08-02-2019, 06:16 AM
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Quote: Originally Posted by rul3s View Post
The highest I can go with CL14-14-14-14-28-42 is 3333, thats my reference point.

Now I'm testing [email protected], with other subtimmings from another user, it's going very well, i'll post results
Can't wait. I suspect really you have to go that high to actually see any difference. The game cache probably has something to do with it.

2nd AMD Build
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X470
GPU
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3200 CL14
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1000
Power Supply
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Last edited by rdr09; 08-02-2019 at 09:43 AM.
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post #7 of 7 (permalink) Old 08-06-2019, 02:33 AM - Thread Starter
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Finally I didn't do the tests in normal speed (3.6GHz) because it wouldn't be real, as my 3700x with PBO always goes up tu 41-41.5x, I've ensured stability on this fixed speed, without C-States, and then made the tests.

The results:


My custom config for 3666 is this:

PhanteksR7
(16 items)
CPU
Ryzen R7 3700x
Motherboard
Asus x470 Strix F
GPU
RTX 2070 Windforce OC
RAM
KFA2 HOF Extreme DDR4 4000CL19 BDie
Hard Drive
Samsung 970EvoPlus 500GB NVMe
Hard Drive
Samsung 850Pro 512GB
Hard Drive
Samsung 860QVO 2TB
Power Supply
Seasonic Focus+ 650W Platinium
Cooling
Noctua NH-U12P
Case
Phanteks Enthoo Pro M SE
Operating System
Windows 10 PRO
Monitor
Samsung C24FG70
Keyboard
Corsair K70 RGB
Mouse
Zowie FK2
Mousepad
Razer Goliathus Cosmic Speed
Audio
Asus Xonar STX
▲ hide details ▲

Last edited by rul3s; 08-06-2019 at 02:39 AM.
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