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Ryzen 5 1500X + AB350M Pro4

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PetrolHead View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PetrolHead Quote  Post ReplyReply Direct Link To This Post Posted: 31 Dec 2017 at 2:37am
I noticed that I had had gear down mode enabled the whole time, which means the CR1 I stated earlier wasn't exactly accurate. I've set tRDWR to 6 instead of seven, disabled gear down mode and set command rate manually to 1T and the next step is to do stability testing.

The L3 Cache test on Aida64 has me a bit worried. The results are all over the place, with the worst runs scoring less than half of what the best runs score. Even the latency, which most of the time is 12.2 ns, can sometimes hop to over 20 ns. Maybe the RAM timings are somehow indirectly affecting L3 Cache? Or maybe the benchmark is just very sensitive to background processes.
Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, Sapphire Pulse RX Vega56 8G HBM2, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PetrolHead Quote  Post ReplyReply Direct Link To This Post Posted: 31 Dec 2017 at 6:17am
Hmph. I did some benchmarking and was a little worried because I was seeing lower numbers than in my original benchmark runs, so I reverted back to my old timings and now I'm seeing even lower results. Weird. I think I'm going to stick with these looser timings for now and maybe wait for AGESA 1.0.0.7 before trying again.
Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, Sapphire Pulse RX Vega56 8G HBM2, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PetrolHead Quote  Post ReplyReply Direct Link To This Post Posted: 31 Dec 2017 at 11:36pm
The CPU settings had at some point switched to auto, which meant the CPU was running at 3.6 GHz. This explains large part of the lower scores in benchmarks and once I corrected the clock speed to 3.7 GHz I started seeing familiar figures. For some reason I still seem to get the best scores in CPU-Z, if I keep the timings at stock XMP timings with CL set to 14 (I haven't tested with CL16, though). As soon as I switch from 14-18-18-18-38-56 to, say, 14-16-16-16-35-51, I seem to lose some points. Also, Aida64's L3 Cache results start to show very low figures, although I'm not quite yet sure if this is just bad luck. In any case, I ran Passmark's MemTest86 from a bootable USB stick at 14-18-18-18-38-56 and no errors were encountered (4 passes, roughly 3.5 hours). At least for now, I'll consider these memory settings stable.

At the moment I'm stress testing 3.8GHz @ 1.3V with Aida64. The stress test crashed within a minute @ 1.25V and within two minutes @ 1.275V, but has now been running without issues for about half an hour. The measured Vcore seems to be constantly higher than what I've set in the BIOS. Aida64 is now showing a steady Vcore of 1.318V, and the offset was more or less the same with the other settings. Now, assuming 3.7GHz was stable at 1.25V (I'm not 100% it was, although I didn't encounter any issues), and assuming 3.8GHz is stable at 1.3V, getting 3.9 GHz stable would likely require unhealhy amounts of Vcore. We'll see how stable this current setting is, but it may be that I'm close to the limit already. The positive thing about the current settings is that temperatures do not seem to have skyrocketed. Instead, I'm looking at an increase of about 5C compared to my previous settings, which leaves me hovering at 77-78C, apart from a few very short spikes to slightly over 80C. I'll have to see where Prime95 takes those numbers, but so far the numbers feel acceptable.

Slightly off topic, but while doing all this, I've encountered a few issues with my motherboard:

-The CPU fan header doesn't seem to know any other settings than "full blast".
-The BIOS profiles do not work. If I save a set of settings and try to load it, the BIOS crashes slightly after the settings have been loaded or reboots the computer even before I have the chance to click "ok". (This is on BIOS 3.3, the only BIOS version I've tried.)
-Booting from an USB stick is a pain, since for some reason the motherboard is picky about which port I use. I had this issue already when trying to install Windows and had to try a few different ports before the BIOS realized there was an USB option for booting. Same thing happened today with the Passmark MemTest86 USB-stick (USB 3.0 just like the Windows installation media). I don't remember which port accepted the Windows USB-stick, but with MemTest86 I tested one of the front panel USB 3.0 ports and one of the rear panel USB 3.0 ports until a rear panel USB 2.0 port finally found the USB stick (edit: This seems to only occur at boot. When Windows has started, it hasn't so far mattered which port is used).

Needless to say, I'm not very impressed with the quality control of ASRock. This stuff is basic and any manufacturer should be able to get these features rock solid, but for some reason it doesn't seem to be happening at ASRock (I don't know about the others). I also had USB port issues with my previous ASRock board, the 970M Pro3, so it feels like ASRock keeps repeating at least some of its mistakes.


Edited by PetrolHead - 31 Dec 2017 at 11:38pm
Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, Sapphire Pulse RX Vega56 8G HBM2, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PetrolHead Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jan 2018 at 5:03pm
3.8 GHz was stable @ 1.3V (BIOS, 1.328V according to HWMonitor) for one hour in Aida64. However, it wasn't stable in Prime95 for five minutes at that voltage. Instead, I got a blue screen and the machine rebooted. I increased the voltage to 1.3125V (or 1.344V according to HWMonitor) and I was stable for a few minutes longer before the machine crashed again. The dump file indicated a memory related issue with CUE.exe (Corsair Utility Engine) and I noticed there was an update for it, so I tried if that would help. It didn't, so I dropped the clock speed to 3.7 GHz while keeping the voltage @ 1.3125V (1.344V). Now Prime95 has been stable for two hours. Temperatures have maxed out at 84C and socket temperature has maxed out at 61C.

Considering that the real Vcore seems to be constantly higher than what I set in BIOS, I don't think I'll be able to hit 3.8GHz on this system without going over the safe limit of 1.35V. Better cooling could possibly help, but I was not hitting over 80C/60C before the crashes so I should have been "safe". Maybe the CPU just can't handle 3.8GHz, or maybe the 3 phase VRM of my motherboard isn't able to keep the voltage steady enough to achieve stability at those settings (even though the time resolution of HWMonitor is such that it seems to be rock solid). Or maybe I'm on the edge of my CPUs IMCs capabilities with running my RAM at 3200MHz, which is why pushing the cores makes it become unstable. I'm not yet sure what I'll do next. I will either try to see how low in voltage I can go before 3.7GHz becomes unstable, or then I'll see how much over the safe limit I have to go to reach 3.8GHz. With the latter option heat might become an issue with the stock cooler. I'm planning on getting new case fans today, though, so I'll see if those affect temperatures at all.
Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, Sapphire Pulse RX Vega56 8G HBM2, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PetrolHead Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jan 2018 at 10:08pm
3.7GHz @ 1.3125V  (1.344V) was stable for 4 hours in the standard Prime95 blend test. Max temps were 84C CPU and 61C socket.

3.7GHz @ 1.275V (1.296V) was stable for 1 hour in the standard Prime95 blend test. Max temps were 80C and 59C socket. I'll do a longer test later, but so far so good.
Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, Sapphire Pulse RX Vega56 8G HBM2, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PetrolHead Quote  Post ReplyReply Direct Link To This Post Posted: 02 Jan 2018 at 4:37am
Originally posted by PetrolHead PetrolHead wrote:

-The CPU fan header doesn't seem to know any other settings than "full blast".


I'm happy to report I was wrong about this. I just chose my custom fan profile settings so that there didn't seem to be much difference. The fan tends to spin around 2000rpm, but it actually has roughly 700rpm in reserve. An it's really loud when it's actually spinning at full speed. I'll probably play around with the custom fan setting a bit more in the near future.

Today I switched the stock Phanteks case fans to Fractal Design Venturi HF-14 units. I'm using the low speed adapter in order to keep them more silent, but frankly they weren't a huge improvement over the Phanteks units. The frequency of the noise is a bit better, the volume of the noise is roughly the same and after another hour of Prime95 the temps had maxed out at 79C / 58C, which is probably within the margin of error. Well, at least nothing seems to have changed for the worse.
Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, Sapphire Pulse RX Vega56 8G HBM2, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PetrolHead Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jan 2018 at 3:53pm
3.7GHz @ 1.25V (1.280V) was stable for 8 hours in the standard Prime95 blend test. Max temps were 77C CPU and 57C socket.
Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, Sapphire Pulse RX Vega56 8G HBM2, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PetrolHead Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jan 2018 at 4:41pm
3.7GHz @ 1.2375V (1.264V) was stable for an hour in the standard Prime95 blend test, but BSOD struck and the computer rebooted. I think temps maxed out at 74C CPU and 55C socket. In any case, the instabilities seem to be memory related, so I'm guessing if I ran the RAM at 2933MHZ or maybe with looser timings, I could push the CPU further. I'm not sure it would be worth it from a performance perspective, though, unless I could push the CPU to 3.9GHz or 4.0GHz. With a custom fan profile I could also try and keep the temperatures lower under stress testing without suffering from increased noise in normal use. That might be next on the list of things to try.
Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, Sapphire Pulse RX Vega56 8G HBM2, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PetrolHead Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jan 2018 at 5:48am
It seems I was partially right about the CPU fan header after all, but the issue seems to be related to software, not hardware. The cooler spins at different rpms when I use silent, standard or performance mode, but the custom setting doesn't work. The fan spins at roughly the same rpm regardless of whether the CPU is under the 65% limit or over the 90% limit. I guess I'll have to wait and see if the next BIOS update will fix it.
Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, Sapphire Pulse RX Vega56 8G HBM2, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PetrolHead Quote  Post ReplyReply Direct Link To This Post Posted: 02 Apr 2018 at 4:15am
This weekend I tried the newest version of Ryzen DRAM Calculator by 1usmus (1.1.0 Beta 1). The timings it suggested were a lot tighter than before (using the Safe-preset), but I gave them a shot. Benchmarks did improvements on average, but again some benchmark results (for example Memory Read Unchached in Passmark's Performance Test 9.0 build 1024) gave worse results than with looser timings. Also, even though I had no trouble running benchmarks after benchmarks, Aida64 stress test reported hardware errors within a few minutes of starting the test, so I went back to my old timings after a few attempts to loosen the timings a bit more to find stability.

Since fiddling with timings didn't seem to give me any results, I decided to give 3333MHz a try. The computer wouldn't boot to Windows with CL14, but with CL16 (and thus normal XMP timings for 3466MHz) it did and managed to finish a few benchmarks as well. However, two hours into Prime95 blend test the machine booted itself, so I went back to 3200MHz, since I can't increase RAM voltage beyond its current 1.35V setting. Furthermore, I set CL to 16 because my computer had a BSOD for the second time during this year. It could just be a driver issue, but let's see if this helps.

I also did a few feeble attempts to OC the CPU a bit, but decided anything less than 100MHz was not worth the effort at this point (and I already know that 3.8GHz requires more voltage than what I'm willing to give the CPU). If I decide to upgrade the CPU cooler, I may give OC'ing the CPU another go.
Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, Sapphire Pulse RX Vega56 8G HBM2, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit
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