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Discussion Starter #1 (Edited)
I'm shopping for cheap memory that will overclock to 4000Mhz with ryzen 3700x (and later zen3) I don't need low latency, just want to max out the infinity fabric (with a little headroom for zen3)
Motherboard is gigabyte b550 Aorus Pro. So I'm looking at Samsung b die 3200c14 or micron rev E 3000c15/3400c16.
The Aorus Pro is Daisy chain, so 2x16GB dual rank should in theory perform better than 4x8GB single rank. But looking at the qvl ram frequency seems to top @ 4000Mhz with 4x8GB single rank sticks, while 2x16GB dual rank stick tops @ only 3600Mhz.
I can't find any cheap 16GB single rank sticks so would 4x8GB single rank sticks likely overclock better than 2x16GB dual ranks? (Assuming the ram is same bin...)
 

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I am no expert on this but afaik, with Gen 2 the most popular speed that members here aim at is 3800MHz regardless of platform since it mostly depends on the CPU's IMC. So, the IF will be at 1900MHz. This does not mean that not one have ever reached higher than 3800MHz.

I did read that Gen 3 will allow for higher speed such as 4000MHz.

And you are right. For Daisy chain, stick with 2 sticks. You can ask here, too.

https://www.overclock.net/forum/13-amd-general/1640919-new-dram-calculator-ryzena-1-7-3-overclocking-dram-am4-membench-0-8-dram-bench.html

BTW, other dies can also reach as high a speed as B-die. The latter is more targeted to achieving tighter timings, thus lower latency, which you do not care about.
 

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Discussion Starter #4
I am no expert on this but afaik, with Gen 2 the most popular speed that members here aim at is 3800MHz regardless of platform since it mostly depends on the CPU's IMC. So, the IF will be at 1900MHz. This does not mean that not one have ever reached higher than 3800MHz.

I did read that Gen 3 will allow for higher speed such as 4000MHz.

And you are right. For Daisy chain, stick with 2 sticks. You can ask here, too.

https://www.overclock.net/forum/13-amd-general/1640919-new-dram-calculator-ryzena-1-7-3-overclocking-dram-am4-membench-0-8-dram-bench.html

BTW, other dies can also reach as high a speed as B-die. The latter is more targeted to achieving tighter timings, thus lower latency, which you do not care about.
Thanks 🙂
 

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3800mhz is probably the highest you will get. anything above that you must be in the 0.1% of lucky people
 

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Discussion Starter #6
3800mhz is probably the highest you will get. anything above that you must be in the 0.1% of lucky people
Yes the memory controller in my early 3700x probably sucks. But buildzoid tested several rev E sticks and like 90% did 4000Mhz.
Of course he didn't really test stability... But I don't think 4000mhz is totally unrealistic when zen3 arrives.
 

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Yes the memory controller in my early 3700x probably sucks. But buildzoid tested several rev E sticks and like 90% did 4000Mhz.
Of course he didn't really test stability... But I don't think 4000mhz is totally unrealistic when zen3 arrives.

I would expect improvements from zen3 but we will see!
 

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F4-3600C15D-16GTZ
F4-3600C14D-16GTZN
F4-3800C14D-16GTZN
F4-4000C15D-16GVK
F4-4000C15D-16GTRS
F4-4000C15D-16GTRG
F4-4400C19D-16GTZKK
Viper Steel 4400
TF10D416G3600HC14CDC01


The F4-3600C15 and the Viper Steel 4400 are the best value overall. You're getting 90% of the performance of the others but for half the price.




quote from @rares495 in another thread
 

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Discussion Starter #10
I live in Denmark. The cheapest oc friendly memory I can find is crusial ballistix black.
I can get BL2K8G30C15U4B for 89 USD including Danish tax on electronics. So 178 $ for 4x8GB Micron rev E. I know these will easily do 3600Mhz. The older version of these with same memory chip and specs did 4000Mhz but that was on A0 pcb, these use A2 pcb so I don't know how that affects their oc potential. But I can always get a refund if I'm not satisfied. (Danish consumer law is pretty cool in this way :)
 

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I live in Denmark. The cheapest oc friendly memory I can find is crusial ballistix black.
I can get BL2K8G30C15U4B for 89 USD including Danish tax on electronics. So 178 $ for 4x8GB Micron rev E. I know these will easily do 3600Mhz. The older version of these with same memory chip and specs did 4000Mhz but that was on A0 pcb, these use A2 pcb so I don't know how that affects their oc potential. But I can always get a refund if I'm not satisfied. (Danish consumer law is pretty cool in this way :)
B-die is too cheap to even consider buying Rev. E
 

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Discussion Starter #12
F4-3600C15D-16GTZ
F4-3600C14D-16GTZN
F4-3800C14D-16GTZN
F4-4000C15D-16GVK
F4-4000C15D-16GTRS
F4-4000C15D-16GTRG
F4-4400C19D-16GTZKK
Viper Steel 4400
TF10D416G3600HC14CDC01


The F4-3600C15 and the Viper Steel 4400 are the best value overall. You're getting 90% of the performance of the others but for half the price.




quote from @rares495 in another thread
These part numbers look like 16GB sticks. Are you sure 2x16GB is better than 4x8 on b550?
Because all the boards officially supports higher mem speeds with 4x8 single ranks compared to 2x16 dual ranks...
Gigabyte, MSI and probably asrock tunned the Daisy chain memory traces from x570 on the b550 boards. B550 seems to be better optimized for 4x8 vs 2x16.
 

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These part numbers look like 16GB sticks. Are you sure 2x16GB is better than 4x8 on b550?
Because all the boards officially supports higher mem speeds with 4x8 single ranks compared to 2x16 dual ranks...
Gigabyte, MSI and probably asrock tunned the Daisy chain memory traces from x570 on the b550 boards. B550 seems to be better optimized for 4x8 vs 2x16.
These are all 2x8.
 

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Discussion Starter #14
I live in Denmark. The cheapest oc friendly memory I can find is crusial ballistix black.
I can get BL2K8G30C15U4B for 89 USD including Danish tax on electronics. So 178 $ for 4x8GB Micron rev E. I know these will easily do 3600Mhz. The older version of these with same memory chip and specs did 4000Mhz but that was on A0 pcb, these use A2 pcb so I don't know how that affects their oc potential. But I can always get a refund if I'm not satisfied. (Danish consumer law is pretty cool in this way :)
B-die is too cheap to even consider buying Rev. E
The cheapest B die is these F4-3200C14D-16GVK. Cost 243 USD for 4x8GB -but that is imported from Germany so I can't just get a refund if I'm not satisfied...

Why am I getting auto logout ever 2 minutes on this forum? Very annoying.
 

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Discussion Starter #15
I live in Denmark. The cheapest oc friendly memory I can find is crusial ballistix black.
I can get BL2K8G30C15U4B for 89 USD including Danish tax on electronics. So 178 $ for 4x8GB Micron rev E. I know these will easily do 3600Mhz. The older version of these with same memory chip and specs did 4000Mhz but that was on A0 pcb, these use A2 pcb so I don't know how that affects their oc potential. But I can always get a refund if I'm not satisfied. (Danish consumer law is pretty cool in this way :)
B-die is too cheap to even consider buying Rev. E
I think Danish tax on electronics makes cheaper options more attractive. And rev E is supposed to be very easy on the imc.
As far I know rev E's oc potential is very consistent if you bios supports low dram termination voltage, so the risk of loosing the ic lottery should be minimal.
I know b die have superior latency, but I feel like maxing rizens infinity fabric frequency is more important than low cas settings -at least with Zen 2. Sure low latency is great but I'm not convinced it's worth the cost of the more expensive memory kits.
 

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I think Danish tax on electronics makes cheaper options more attractive. And rev E is supposed to be very easy on the imc.
As far I know rev E's oc potential is very consistent if you bios supports low dram termination voltage, so the risk of loosing the ic lottery should be minimal.
I know b die have superior latency, but I feel like maxing rizens infinity fabric frequency is more important than low cas settings -at least with Zen 2. Sure low latency is great but I'm not convinced it's worth the cost of the more expensive memory kits.

B-die goes higher and way tighter than the typical Rev E. The difference in latency is huge and results in substantial gains in most applications. It's worth the cost simply because Rev E is a pain to OC whereas B-die is super easy. And even if you get the most out of Rev E, you'll still be so far off even the crappiest B-die that you will become frustrated wishing you had spent just $20 more on a proper memory kit.
 

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Discussion Starter #17 (Edited)
I don't mind spending time overclocking ram, I actually enjoy tinkering with my PC....
In Denmark 32GB b die would cost about 60 usd more than 32GB rev E. With a little luck both would reach 3800Mhz matching the if on my 3700x. It's also possible the imc on my early (bought within first week of release) 3700x can't run 4 sticks @ 3800Mhz. Rev E is supposed to be easy on the imc, so b die would increase this risk.
Sure b die has better timings, but is that worth 60 usd? I don't use my computer very often and I really doubt lower timings would make my overclocked rx580 substantially faster.
So will I pay 60 usd for 1-2% higher lowest fps in games? For me that's a definite no.
 

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Ye, with RX580 you're heavily constrained, but will you stay with RX580 forever? You'll have a great ground for stronger GPUs.
 

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I don't mind spending time overclocking ram, I actually enjoy tinkering with my PC....
In Denmark 32GB b die would cost about 60 usd more than 32GB rev E. With a little luck both would reach 3800Mhz matching the if on my 3700x. It's also possible the imc on my early (bought within first week of release) 3700x can't run 4 sticks @ 3800Mhz. Rev E is supposed to be easy on the imc, so b die would increase this risk.
Sure b die has better timings, but is that worth 60 usd? I don't use my computer very often and I really doubt lower timings would make my overclocked rx580 substantially faster.
So will I pay 60 usd for 1-2% higher lowest fps in games? For me that's a definite no.

At this point you're not looking for opinions anymore. You're just looking for confirmation that you're making a good choice and I'm sorry but no. You're not going to get it from me.


I've stated my thoughts on the matter so there's nothing more I can do. You buy whatever you want to buy.
 

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These part numbers look like 16GB sticks. Are you sure 2x16GB is better than 4x8 on b550?
Because all the boards officially supports higher mem speeds with 4x8 single ranks compared to 2x16 dual ranks...
Gigabyte, MSI and probably asrock tunned the Daisy chain memory traces from x570 on the b550 boards. B550 seems to be better optimized for 4x8 vs 2x16.

It is dependent on how much memory you want first off, if you want 32gb and have a daisy chain board the best recommendation is 2x16.


For T Topology i believe 4x8 would be better.
 
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