• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

Ryzen 5 5500 + Samsung B-Die Viper Steel 4000-19 RAM OC Results

T

The Front Man

New Member
Joined
Apr 3, 2022
Messages
7 (0.01/day)
Test System
  • Lian Li Lancool II Mesh RGB
  • Wraith Stealth Rev.B
  • Ryzen 5 5500 (Stock)
  • Patriot Viper Steel 4000 MHz CL19 (19-19-19-39, 1.35V, Samsung B-Die)
  • MSI MPG B550 Gaming Plus


ZenTimings

1660846129000.png


4000 MHz CL14 TestMem5 1usmus_v3 Config "6 Cycles" Test

1660846143347.png


AIDA 64 Latency Test

1660846174551.png


I didn't push the FCLK limit, 4000-14 is ok for me. I just want to share it. Because I didn't see any topic about Ryzen 5500 RAM OC. I think that 5500 has same IMC potential with 5600G, because it's actually the 5600G without APU. This is so weird that HWiNFO shows APU GFX temp but there is no APU in this CPU, lmao.

1660846211525.png

 
1.6v is high for that kit, I would tune it down to 1.45-1.5v unless you have active cooling on your ram. I too just went through a bunch of testing with basically the same kit, I can run 1900fclk at cl14 but it takes more voltage (1.52v), here's my current results.

Also just an fyi check for whea error 19 in event viewer if you're going above 1900mhz fclk you probably get them under any sort of load (I get thousands at 2000fclk but p95 is stable).

zentsidebyside.jpg
 
oobymach said:
1.6v is high for that kit, I would tune it down to 1.45-1.5v unless you have active cooling on your ram. I too just went through a bunch of testing with basically the same kit, I can run 1900fclk at cl14 but it takes more voltage (1.52v), here's my current results.

Also just an fyi check for whea error 19 in event viewer if you're going above 1900mhz fclk you probably get them under any sort of load (I get thousands at 2000fclk but p95 is stable).

View attachment 258563
Click to expand...
My airflow is ok for RAM. There is no problem to 1.6V. I already know that Viper Steel's cooling performance is bad. But in a good airflow case, its acceptable. Samsung B-Die is sensitive to 60 degrees. When it reaches 60 degress, it starts giving error(s). No error: no problem. Error: Probably you are at 60 degrees or higher.

BTW 5500 has different architecture with 5600X. 5600X is bad CPU to compare.
 
I'm guessing they didn't disable the temp sensor. They aren't going to physically carve the iGPU out of Cezanne just for the 5500. I never look at APU GFX sensor anyways, readings seem kinda weird and iGPU is always cooler than CPU cores so

53ns seems a little bit high for how tight you run it. Did you disable TSME?

Even on 4650G I only needed 4000cl16 to get to ~54ns

I am at about 1.6v as well, gigabyte overvolts. Plenty of airflow so it's fine. But your timings aren't helping you if you just want better AIDA latency, the software cares more about tRFC than all your other tight subtimings, and honestly 150ns is on the loose side for any B-die unless you can't boot any lower

5700g 47.5ns.png


Most Cezanne clocks FCLK similarly, doesn't matter what SKU. Unless you have a dud, the FCLK limit should far far above 2000. Mine is about 2200 with the iGPU weighing it down, pop in a dGPU and you should be looking at 2300+
 
Last edited:
The Front Man said:
What is TSME?
Click to expand...

It's some memory security encryption feature. Problem is, it adds like 5-10ns latency penalty for 4000 Renoir and 5000 Cezanne APUs when it's enabled. If you memory OC on the APUs, first step is to disable it. It's either under AMD CBS menu under Security, or in there DDR4 or UMC options, or now listed in like Tweaker if you have Asus, idk AMD BIOS is always a mess. You'll find it through search feature in BIOS

Memory encryption: AMD SME, TSME and SEV (mricher.fr)

The security experts like it, but no one else cares because the actually popular mainline CPUs don't even have the feature (3000 Matisse and 5000 Vermeer) it's not like they have a glaring security hole in their PC as a result, and the performance impact is so significant.

1.6V I probably wouldn't want to run on my main (the dual rank 3800CL14 @ 1.54V). This 5700G is just on my media PC so I don't really care if it dies. Though I haven't actually killed a RAM kit through VDIMM yet, I've been running this high on a 4133CL19 Vipers, 4400CL19 Vipers (board short killed the board, CPU and RAM), and another 4400CL19 kit right now.
 
tabascosauz said:
It's some memory security encryption feature. Problem is, it adds like 5-10ns latency penalty for 4000 Renoir and 5000 Cezanne APUs when it's enabled. If you memory OC on the APUs, first step is to disable it. It's either under AMD CBS menu under Security, or in there DDR4 or UMC options, or now listed in like Tweaker if you have Asus, idk AMD BIOS is always a mess. You'll find it through search feature in BIOS

Memory encryption: AMD SME, TSME and SEV (mricher.fr)

The security experts like it, but no one else cares because the actually popular mainline CPUs don't even have the feature (3000 Matisse and 5000 Vermeer) it's not like they have a glaring security hole in their PC as a result, and the performance impact is so significant.

1.6V I probably wouldn't want to run on my main (the dual rank 3800CL14 @ 1.54V). This 5700G is just on my media PC so I don't really care if it dies. Though I haven't actually killed a RAM kit through VDIMM yet, I've been running this high on a 4133CL19 Vipers, 4400CL19 Vipers (board short killed the board, CPU and RAM), and another 4400CL19 kit right now.
Click to expand...
Good info. Going to try disabling it on my Cezannes.
 
tabascosauz said:
It's some memory security encryption feature. Problem is, it adds like 5-10ns latency penalty for 4000 Renoir and 5000 Cezanne APUs when it's enabled. If you memory OC on the APUs, first step is to disable it. It's either under AMD CBS menu under Security, or in there DDR4 or UMC options, or now listed in like Tweaker if you have Asus, idk AMD BIOS is always a mess. You'll find it through search feature in BIOS

Memory encryption: AMD SME, TSME and SEV (mricher.fr)

The security experts like it, but no one else cares because the actually popular mainline CPUs don't even have the feature (3000 Matisse and 5000 Vermeer) it's not like they have a glaring security hole in their PC as a result, and the performance impact is so significant.

1.6V I probably wouldn't want to run on my main (the dual rank 3800CL14 @ 1.54V). This 5700G is just on my media PC so I don't really care if it dies. Though I haven't actually killed a RAM kit through VDIMM yet, I've been running this high on a 4133CL19 Vipers, 4400CL19 Vipers (board short killed the board, CPU and RAM), and another 4400CL19 kit right now.
Click to expand...
Disabling the TSME didn't change anything about the latency.
 
The Front Man said:
Disabling the TSME didn't change anything about the latency.
Click to expand...

Well, I guess AMD cheaped out on the 5500 then.

Higher latency might just come from it being a 4DIMM board, and your tRFC. My Unify-X is tight but the B550I Gaming Edge Wifi MAX just sucked for latency and there was no way around it. Try lowering tRTP as well, iirc should be 1:2 with tWR so I run 6 and 12 respectively.

Do you really need 1.2V for 2000 FCLK? Obscenely high VSOC considering this is an APU not using iGPU. I think even my 4650G did 4000 at sub-1.1V.
 
You must log in or register to reply here.
Back
Top