Testing max ram overclock pn Ryzen 1700

[Cowboystrekk]

Looks like ram oc has come a far way since 2017. I tried the same cpu on a Asus B450m tuf 4dimm with same bios/agesa and I could not get anything above 3533 stable. 2dimm layout on motherboard helps a lot with ram oc

Unfortunately this is a crappy binned Hynix CJR. I wish I had good DJR, rev E/B or B-die to make this cpu really shine

 

[Cowboystrekk]

This became the final timings.

 

[Ruru]

I have no experience of the OG Zen, but DDR4-3733 sounds pretty good to me.

 

[Cowboystrekk]

I have no experience of the OG Zen, but DDR4-3733 sounds pretty good to me.

Yeah, I was surprised it worked I was also surprised that usibg a 2dimm motherboard gets me 200MHz higher ram overclock than a 4dimm motherboard.

 

[Cowboystrekk]

I had issues with 3733 if cpu-temps rose above 70C. I tightened down 3666. Aida latency dropped from 71.8 with 3733c18-21-20 to 68.3 with 3666c16-20-19

 

[sneekypeet]

If you lower the F Clock (I think thats what its called) you can go higher usually.
You will need to test which is faster, but if memory serves, it happens close to 4000MHz where it levels out.

 

[Cowboystrekk]

If you lower the F Clock (I think thats what its called) you can go higher usually.
You will need to test which is faster, but if memory serves, it happens close to 4000MHz where it levels out.

You cant desync fclk from uclk on Zen 1 from my knownledge. The ram kit is very bad binned so results at 4000 may be limited anyways.

 

[FamousFighter]

View attachment 379537
Looks like ram oc has come a far way since 2017. I tried the same cpu on a Asus B450m tuf 4dimm with same bios/agesa and I could not get anything above 3533 stable. 2dimm layout on motherboard helps a lot with ram oc

Unfortunately this is a crappy binned Hynix CJR. I wish I had good DJR, rev E/B or B-die to make this cpu really shine

Literally made an acc for this. You have a god tier cpu even my 3700x cant do 3600 MT/s without failing to post. Best latency I can get is 68.9ns. I wonder if your cpu will perform almost like a 2700x with your ram timings.

 

[ir_cow]

Zen1 doesn't have a IMC Gear Mode so it's always 1:1 ratio. Anything above 3200 is a maricle.

Are you going for just memory booting or stability?

 

[x4it3n]

That's a great OC ! The best I could get on my 5900X was 3733MHz (14-14-14-28) with 4x8GB !

 

[Cowboystrekk]

Literally made an acc for this. You have a god tier cpu even my 3700x cant do 3600 MT/s without failing to post. Best latency I can get is 68.9ns. I wonder if your cpu will perform almost like a 2700x with your ram timings.

What ram and bios are you using? i can try to help you if you want? Yeah, it may perform close to a 2700X

Zen1 doesn't have a IMC Gear Mode so it's always 1:1 ratio. Anything above 3200 is a maricle.

Are you going for just memory booting or stability?

Stability 3666 is rock solid. 3800 boots fine, but get many errors. 3733 is stable up to 70-75C, msy be possible to stabilize with better cooler and tweaking.

That's a great OC ! The best I could get on my 5900X was 3733MHz (14-14-14-28) with 4x8GB !

Zen 1 will struggle with dual rank/4x dimms 3733 with 4dimms is good!

The trick is using a 2dimm motherboard, shorter and better memorytraces helps overcome a bad imc vs 4dimm. The Asus B450m tuf with 4dimms was impossible to run at 3600, 3533 was absolute max.

 

[ShrimpBrime]

You cant desync fclk from uclk on Zen 1 from my knownledge. The ram kit is very bad binned so results at 4000 may be limited anyways.

Same for Zen+. It's locked 1:1. You won't squeeze 2000mhz Fabric without getting extreme with temps.

CJR isn't horrible, DJR a little better, B-Die will just run tighter timings.

Otherwise, this looks good!!

 

[Frick]

Do keep in mind long term stability. I had a Ryzen 2600 and the 3000Mhz memory would pass stress tests and checks but after a few months the BSODs would come and eventually the OS would get corrupted. It all stopped when I dropped the speed to like 2400Mhz.

 

[ir_cow]

How much voltage are you jamming in to get 3733 x4?

 

[Cowboystrekk]

Do keep in mind long term stability. I had a Ryzen 2600 and the 3000Mhz memory would pass stress tests and checks but after a few months the BSODs would come and eventually the OS would get corrupted. It all stopped when I dropped the speed to like 2400Mhz.

Gdm off and too low rfc are the main causes for corruption. I tested sfc /scannow yesterday and no corruption for 3 weeks even with the slightly unstable 3733c18 until recently.

 

[x4it3n]

What ram and bios are you using? i can try to help you if you want? Yeah, it may perform close to a 2700X


Stability 3666 is rock solid. 3800 boots fine, but get many errors. 3733 is stable up to 70-75C, msy be possible to stabilize with better cooler and tweaking.


Zen 1 will struggle with dual rank/4x dimms 3733 with 4dimms is good!

The trick is using a 2dimm motherboard, shorter and better memorytraces helps overcome a bad imc vs 4dimm. The Asus B450m tuf with 4dimms was impossible to run at 3600, 3533 was absolute max.

I had an ASUS ROG Strix X570E Gaming, with a 5900X and some G.SKILL ROYAL 4x8GB DDR5 4000 CL15 that I downclocked to 3733MHz CL14. It was running like a charm with the 1usmus DDR4 timings.

How much voltage are you jamming in to get 3733 x4?

I was at default (1.45v if I remember well) because my kits were originally 4x8GB 4000 CL15

 

[FamousFighter]

What ram and bios are you using? i can try to help you if you want? Yeah, it may perform close to a 2700X


Stability 3666 is rock solid. 3800 boots fine, but get many errors. 3733 is stable up to 70-75C, msy be possible to stabilize with better cooler and tweaking.


Zen 1 will struggle with dual rank/4x dimms 3733 with 4dimms is good!

The trick is using a 2dimm motherboard, shorter and better memorytraces helps overcome a bad imc vs 4dimm. The Asus B450m tuf with 4dimms was impossible to run at 3600, 3533 was absolute max.

Sorry I made a mistake. I cant post going past 3600 MT/s but I can post with 3600MT/s and be stable. I also don't mind the help either

 

[ir_cow]

N

I had an ASUS ROG Strix X570E Gaming, with a 5900X and some G.SKILL ROYAL 4x8GB DDR5 4000 CL15 that I downclocked to 3733MHz CL14. It was running like a charm with the 1usmus DDR4 timings.


I was at default (1.45v if I remember well) because my kits were originally 4x8GB 4000 CL15T

Not DRAM but CPU SOC / iMC

 

[x4it3n]

N

Not DRAM but CPU SOC / iMC

I don't remember the exact number but it was not very high even though I had PBO +150 in my 5900X on top of it.

 

[Cowboystrekk]

Sorry I made a mistake. I cant post going past 3600 MT/s but I can post with 3600MT/s and be stable. I also don't mind the help either

Update bios to agesa 1.2.0.7 or newer first. Is you ram in slot a2 and b2? Post a zentimings screenshot of stable settings

 

[FamousFighter]

Update bios to agesa 1.2.0.7 or newer first. Is you ram in slot a2 and b2? Post a zentimings screenshot of stable settings

I am on the latest bios for my motherboard (excluding the newer beta bios) and my ram is in the a2 and b2 slots.

 

[Cowboystrekk]

I am on the latest bios for my motherboard (excluding the newer beta bios) and my ram is in the a2 and b2 slots.

View attachment 382047

Do you know what ram this is? Checked with thaiphoon burner which dies? Kinda looks like Hynix AJR, it can be micron rev B aswell. Some of your timings are really weird and can cause issues, especially faw 12, wr 10 and rdwr 8. I would try:
Ram voltage 1.4v
Ras 35
Rc 54
Rrds 4
Rrdl 6
Faw 16
Wr 16
Rfc 496
Rdrdscl 4
Wrwrscl 4
Rtp 8
Rdwr 10

Keep rest as they are.

If you want to try 3666, 3733 or 3800 try raising rcds to 20, rp to 20, ras to 36, rc to 56 and rfc to 528.

 

[FamousFighter]

Do you know what ram this is? Checked with thaiphoon burner which dies? Kinda looks like Hynix AJR, it can be micron rev B aswell. Some of your timings are really weird and can cause issues, especially faw 12, wr 10 and rdwr 8. I would try:
Ram voltage 1.4v
Ras 35
Rc 54
Rrds 4
Rrdl 6
Faw 16
Wr 16
Rfc 496
Rdrdscl 4
Wrwrscl 4
Rtp 8
Rdwr 10

Keep rest as they are.

If you want to try 3666, 3733 or 3800 try raising rcds to 20, rp to 20, ras to 36, rc to 56 and rfc to 528.

Its H16C. I can't push higher than 3600 and any time I have tried even with a manual higher voltage I have to clear cmos.

 

[Cowboystrekk]

Its H16C. I can't push higher than 3600 and any time I have tried even with a manual higher voltage I have to clear cmos.

Try the timings I gave you, it will probably improve performance a bit

 

[ShrimpBrime]

Try the timings I gave you, it will probably improve performance a bit

Aw man, his memory is just trash for tweaking. That's all it is. He should be running 16-18-18's no problem with Gear down disabled. Gear down is fools play for a couple of reasons. It accommodates odd number Cas latency memory and generally allows 1:2 ratio to the memory controller. And since he's running 1:1, it's evident the odd primary timings are causing an issue as well as the peculiar secondary timings you've pointed out.

Maybe 3200mt/s to 3400mt/s and work the timings for latency instead. It'll probably be a lot easier to work with. The alternative, to trying to go faster than 3600mt/s would require loosening the primaries (probably a lot) and work the secondaries for efficiency. But realistically, just a better set of memory would go a long way. We all know the tweakers ddr4 suggestion....

Its H16C. I can't push higher than 3600 and any time I have tried even with a manual higher voltage I have to clear cmos.

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