Watch this BEFORE buying an AMD CPU! - Every RAM Speed Tested

[Emily Young]

Everyone knows Ryzen LOVES fast RAM.. But AMD made some tweaks to the 3000-series that make it less straightforward. So what should YOU buy for third-gen Ryzen?

 

 

Buy a Ryzen 5 3600:
On Amazon: https://geni.us/AyDSv
On Newegg: https://lmg.gg/8KVz7

 

Buy a Ryzen 7 3700X:
On Amazon: https://geni.us/MB2V
On Newegg: https://lmg.gg/8KVzM

 

Buy a DDR4-3000 Samsung B Die memory kit (for low-speed overclocking)
On Amazon: https://geni.us/nJzR
On Newegg: https://lmg.gg/8KV3h

 

Buy a DDR4-3600 Samsung B Die memory kit
On Amazon: https://geni.us/JOIcw4r
On Newegg: https://lmg.gg/8KV39

 

Buy a DDR4-3800 Samsung B Die memory kit
On Amazon: https://geni.us/8Q3M0nA
On Newegg: https://lmg.gg/8KV3w

[rcarlos243]

So much misinformation.

 

It has been proven that ram speed > memory rank.

 

In fact multiple benchmark has been done and measured this.

https://www.reddit.com/r/hardware/comments/7vy2zs/3000mhz_ddr4_beats_4600mhz_ddr4_on_intel_cpus/

[pApA^LeGBa]

Is there any place to see the charts in the video side by side? It´s a pain to compare in the video because there is no chart comparing lower frequency to higher ones. Tbh i don´t know more than before watching it. The 3600 sweet spot was already known before.

[ThoreauHD]

Anthony, can you post you 3733 tightest timing numbers?  And on which kit.

[Hans Power]

Damn, going into Buildzoid territory! And you even did a great job at explaining the whole process! Well done guys!

[vanished]

52 minutes ago, rcarlos243 said:

So much misinformation.

 

It has been proven that ram speed > memory rank.

 

In fact multiple benchmark has been done and measured this.

https://www.reddit.com/r/hardware/comments/7vy2zs/3000mhz_ddr4_beats_4600mhz_ddr4_on_intel_cpus/

Your own link claims the opposite of what you just said, furthermore this is a completely different CPU and architecture so it's not out of the question to imagine what works for one doesn't work for another.  Example: Early Ryzen did prefer speed over anything else, but it appears that's changed.

[BabaGanuche]

Buildzoid has done some similar testing and he found that 1:1 is the best option unless you can go 160 to 200 MHz faster for IF clock. Also there is a preference for dual rank vs single rank.

 

 

[N.tony]

Dang it, I built my Ryzen PC just yesterday! 

[relaxation]

It seems like a mixed bag ( spreadsheet, imgur.com ) and ymmv depending on loads that aren't listed, the timings adjustment seems to be the thing to look at.

[Flying Sausages]

4 hours ago, N.tony said:

Dang it, I built my Ryzen PC just yesterday! 

How is the PC? 

[Crosseyed Sniper]

Must be special AMD RAM?

[NumLock21]

Even AMD said it themselves which rams is the best for Ryzen 3rd gen. Here is their official slide

Spoiler

 

 

Quote

 

AMD had published an interesting slide in regards to the new faster DDR support that went well above the officially supported 3200 speeds, with AMD claiming that the new controllers are able to support up to DDR4-4200 with ease and overclocking being possible to achieve ever higher speeds. However there’s a catch: in order to support DDR4 above 3600, the chip will automatically change the memory controller to infinity fabric clock ratio from being 1:1 to 2:1.

Whilst this doesn’t bottleneck the bandwidth of the memory to the cores as the new microarchitecture has now doubled the bus width of the Infinity Fabric to 512 bits, it does add a notable amount of cycles to the overall memory latency, meaning for the very vast majority of workloads, you’re better off staying at or under DDR4-3600 with a 1:1 MC:IF ratio. It’s to be noted that it’s still possible to maintain this 1:1 ratio by manually adjusting it at higher MC speeds, however stability of the system is no longer guaranteed as you’re effectively overclocking the Infinity Fabric as well in such a scenario.

 

https://www.anandtech.com/show/14605/the-and-ryzen-3700x-3900x-review-raising-the-bar

[Jymf]

How was CS:GO tested (what map, was it a prerecorded demo being played back etc)?

[Zeed]

Mannn Where are AIDA latency numbers on given memory timings ?? What was SoC and VDDG used?? Interested to compare to my settings.
This is what @m running 35 000% ramtest stable 20 x intel burn test Aida and realbench. Was rendering for 6 hours yesterday. And Mining for 20+ hours with cpu+gpu stable.

[realpetertdm]

16 hours ago, rcarlos243 said:

So much misinformation.

 

It has been proven that ram speed > memory rank.

 

In fact multiple benchmark has been done and measured this.

https://www.reddit.com/r/hardware/comments/7vy2zs/3000mhz_ddr4_beats_4600mhz_ddr4_on_intel_cpus/

 

Please read before you post. Your own link is about Intel CPUs. This video is about Ryzen CPUs. 

 

Also your cited reddit post isn't even relevant since it's from 1+ year ago and they didn't test on AMD Zen 2 CPUs with Infinity Fabric.

[automata_killa]

Could you replicate a similar test on 3200G/3600G? for those apus clock speed and ram compatibility is crucial, even more so than on cpus.

[N.tony]

12 hours ago, OlympicAssEater said:

How is the PC? 

It's a Ryzen 2600, so the video wasn't even applicable  But seeing the title sure made me wince 

[Rollergold]

How much more performance would I gain if I go from CL 17 to CL 16 or even 15 @ DDR4-3600?  Hard to find any CL 16 or lower 16GB Dimms locally in Canada.

[missinformed]

Hi friends, long time LTT fan but first time post so go easy on me :)

 

I'm planning on getting a Ryzen 5 3600 and as the video recommends, a few sticks of DDR4-3600.

 

1. If I ended up OC'ing the CPU, would I also need to OC the RAM so I keep the ratio as 1:1? 
2. Did I miss this, or the video doesn't specify if 8, 16 or 32 GB of RAM were being used in the benchmarking?

Thank you in advance. 

[Cid156]

I believe it is a no go?

Around 1500$ with windows 10 and 3 years warranty...

But...

I do not like the ram (the psu and the cooler too)...

 

3000mhz is too low?

[ryo0hki]

Just finished a build with ryzen 9. And a dual m.2 ssd in raid 0, and a Nvidia 2080 gtx. Using a Asus Crosshair VII Hero. I bought the lowest latency ram I could find for the cheapest cost.  Ddr4 from g.skill with 15 latency 4 gig sticks at 25 bucks a piece. I plan to play with the timings, but even before I do this computer is lightning quick.  I'm just trying to figure out where to start.  It's in the bios.. somewhere.

[lil_Sponge]

which ram would be better this https://www.amazon.com/dp/B07N43CYMS?tag=pcpapi-20&linkCode=ogi&th=1&psc=1 or this https://www.amazon.com/dp/B07X8DVDZZ?tag=pcpapi-20&linkCode=ogi&th=1&psc=1

 

they both cost the same but the g skill is 3600 cl16 and the viper is 3733 cl17. it does say 3733 cl17 is better for ryzen 3000 cpu's but does not mention timings.

 

vipers timings 17-21-21-41 

 

gskills timings 16-19-19-39

[dgdg]

I didint get everything from the video sorted out, Im looking for the best configuration possible in order to optimize the operation of my system taht have 2x8gb 3200mhz (i upgraded from a I5 7600K and kept the memos). Im not entirely sure if the video says that a single chip is the best option for the Ryzen (mine is R5 3600) or if single channel is best than dual channel for the R5 3xxx. Can you guys help me understanding taht? Should I try changing the slots of the 2 chips in order to get the rams running at single channel? And after that I should start messing with the timmings of the memories because the Ryzen's controller deals well with that?

[Krzeszny]

I know it's been 3 years but Linus hadn't explained low clock speed performance.

TL;DR if all we needed was 2133 RAM (with how low latency?) with a random FLCK ratio to get the best performance... wasn't everyone who paid a premium for "faster" RAM... ripped off?