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Looking for easy DDR5 settings to get stability and most of the performance

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LT9823

New Member
Joined
Dec 28, 2024
So, new PC:

R5 7600 with stock cooler & included paste (kinda wish now I had gotten a better cooler, but I'll just deal with it until I upgrade my CPU down the line)
ASRock B650M-HDV/M.2 mobo
G.Skill Ripjaws S5 Series (2x16GB) DDR5-6000 CL36
MSI Ventus GeForce RTX 4070 Ti Super
Windows 10

At first it was restarting randomly in Windows 10, even under the base 4800 MHz ram timings, and before I even had the GPU. But it SEEMS LIKE that was due to CPU overheat before I enabled PBO w/ 85C. After PBO was set, I never had another crash at default 4800 RAM timings. (I also have heard I may need to physically switch the stock R5 7600 cooler to be at a faster fan speed, which is fine I guess if it helps.) But it's also conceivable there's something else wrong with the motherboard etc, and I haven't figured out what yet.

- I then played with increasing DDR5 frequency. Even at the default 1.1V, with default timings, it seemed stable at 5800 MHz? Although I didn't test it thoroughly. However 6000 MHz was a no-go: got into Windows but peripherals didn't work, etc.
- Then after updating BIOS to the latest non-beta (v1.30) I tried the default XMP profile with 6000 MHz and faster timings (36 on most?), 1.35V and I disabled MCR. Unfortunately, it crashed Windows again.
- Keeping all of those settings but lowering to 5800 MHz, it seemed stable in Windows, and then for as much memtest86 as I felt like running last night (one full pass, about 35 min.) No errors.
- HOWEVER, today on coldstart I got 3 beeps which I think was another failure?? So, I went back into BIOS once again, lowered to 5600 MHz, no change on timings, but decided to try lowering voltage to 1.25V.

Currently in memtest86 and it's completed 1 pass with no errors, at 5600 / CL36 / 1.25V.

But basically, my question & goal is this: What should I set or change to get the EASIEST good performance from this DDR5 without worrying about possible problems every time I start up? I know DDR5 is a pain and I'm not worried that "I can't get my rated 6000" because I'd rather just get close to that and have a rock stable system. But I would like to get 5800 if it's possible. Should I try with different timings, and which ones should I loosen a bit? What voltage is generally good for someone like me who is willing to back off a bit to 5800 or even 5600 if needed? Thanks.
 
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Update - I'm not even sure I was actually stable & running at any of those, it may have defaulted me back to 4800 and I didn't notice. I have to throw out those tests. Because now I can't seem to get it stable beyond 5400 MHz. What I don't get is, for my two available profiles I have:

JEDEC standard: Freq 4800, tCL 40, tRCD 40, tRP 40, tRAS 77, tRC 117, tWR 73, tRFC1 710, tRFC2 385, tRFCSb 313
XMP 1 : Freq 6000, tCL 36, tRCD 36, tRP 36, tRAS 96, tRC 132, tWR 90, tRFC1 886, tRFC2 481, tRFCSb 391

So the XMP for my RAM actually lengthens every timing but the first 3.

I've now been trying to adjust upward from the basic JEDEC timings. I can get into Windows at 5400 with everything else stock. But 5600 I can't even with 1.3V. If someone can tell me what timings to aim for to try to get 5600 MHz (should I just choose the XMP1 at 5600 MHz? because I think that was failing) let me know. In the meantime I am going to memtest86 on the 5400.

Actually I was able to adjust that XMP1 down to 5600 and POST. Then I dropped voltage to 1.3 and will be memtesting that. I honestly don't think this thing will go higher than 5600 for whatever reason. Unless someone comes up with magical timings for me.
 
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Will that memory do AMD EXPO or is it XMP 3.0 only or both. You need memory that will do AMD EXPO. Check your motherboards memory compatibility list for memory modules. If you go into the BIOS there should be a setting for AMD EXPO which will automatically set the memory timings for the memory. That memory may not be the best fit for the motherboard. You should only use AMD EXPO memory with AMD based motherboards.
The memory I looked up shows it to be: INTEL XMP 3.0
 
Will that memory do AMD EXPO or is it XMP 3.0 only or both. You need memory that will do AMD EXPO. Check your motherboards memory compatibility list for memory modules. If you go into the BIOS there should be a setting for AMD EXPO which will automatically set the memory timings for the memory. That memory may not be the best fit for the motherboard. You should only use AMD EXPO memory with AMD based motherboards.
The memory I looked up shows it to be: INTEL XMP 3.0

Oh wow. I never even knew Intel and AMD had different DDR5 OC profiles. I guess that's mistake number 11 or 12 by now. Does XMP vs. EXPO affect the settings on the timings?

With the updated BIOS it did give me an XMP setting that I listed above. Is that going to be a problem for me to try to run since it's AM5? I got through almost 2 hours of memtest86 at 5600 MHz, CL36, 1.3V with no errors, until feeling satisfied enough and ending the test. If despite my boneheaded mistake I can still run it at 5600 MHz CL36 I'm happy enough with that. Let me know if you think I shouldn't. I was able to get to 5400 MHz on the default JEDEC so that wouldn't be the end of the world.
 
What memory kit, exactly? List the product number.

XMP profiles will, quite often, work on AMD platforms. It will not hurt to try to use XMP. Most of my kits are XMP and work on AMD and have for years. That doesn't mean your kit will work, but just wanted to clarify that it more often than not can work.
 
What memory kit, exactly? List the product number.

XMP profiles will, quite often, work on AMD platforms. It will not hurt to try to use XMP. Most of my kits are XMP and work on AMD and have for years. That doesn't mean your kit will work, but just wanted to clarify that it more often than not can work.
G.Skill Ripjaws S5 Series 32GB (2x16GB) 288-Pin PC RAM DDR5 6000 (PC5 48000) Desktop Memory Model F5-6000J3636F16GX2-RS5K

I'm sure it just has XMP because that's the only option that the BIOS gave me. So hopefully it can just be stable at 5600 without any further issues. Thanks.
 
Update - even after lots of memtesting and no errors, restarting with the XMP1 profile 5600 MHz 1.3V setting gave another 3-beep error with automatic reset to the base JEDEC 4800 MHz... really frustrated with it. Now I'm trying the base JEDEC (CL40) at 5400 MHz 1.2V...

Anyone know why I can get clear memtests for hours, but on restart keep getting the 3-beep memory error? At what point should I try to reseat the RAM, or something else?
 
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