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[storm-chaser]

 

[freeagent]

I thought they would have given 1T support with the move to DDR3.. bummer. I have RF X48 but only DDR2..

I was always curious about that.

 

[storm-chaser]

Here is my z820 with two E5 2673 v2 processors. This is an OEM only chip so it registers as it's retail counterpart in AIDA64, the E5 2667 v2... but it's actually superior to any chip with a 4.0GHz boost in the entire 2600 series lineup... This is before and after upgrading to an 8 channel memory kit.

Slight gains for the Phenom II rig...

Yup, back in the day memory overclocking was serious adventure.

(1) Ram Tweakers Version DDR3 | TechPowerUp Forums
(1) RAM Tweakers thread | TechPowerUp Forums

That being said, I like to think that things are just "different" now. Less brute force overclocking, and more subtle massaging to squeeze every little bit out of sticks, Also, if you don't buy sticks where you know exactly what you are getting i.e. only buy Samsung B-die and using Thaiphoon and timing calculators it can be way more fun. I think the knowledge of exactly what you are going to get is at least partially responsible for the lack of excitement with DDR4. I think that's what's made this Mushkin kit fun. With Thaiphoon reporting the IC's as "undefined", it's forced me to discover everything on my own, which is kind of like "the old days". I'll test that theory when I start playing with a new set of Ballistix Elite 4000 sticks that should be here tomorrow. These sticks have plenty of info out there on exactly how to tweak them.

Here is the same memory running 4220MHz @ CL16 for benching only, this is not 100% suitable for daily driver use. Try as I may, I simply cannot get below 40ns on latency.

 

[PaulieG]

He meant the voltage you're running for 4166CL18

Here is my z820 with two E5 2673 v2 processors. This is an OEM only chip so it registers as it's retail counterpart in AIDA64, the E5 2667 v2... but it's actually superior to any chip with a 4.0GHz boost in the entire 2600 series lineup... This is before and after upgrading to an 8 channel memory kit.

View attachment 189978

Slight gains for the Phenom II rig...

View attachment 189985


Here is the same memory running 4220MHz @ CL16 for benching only, this is not 100% suitable for daily driver use. Try as I may, I simply cannot get below 40ns on latency.

i'veView attachment 189987

That's some crazy latency, stable or not. I've not had anything dip out of the 50's yet.

 

[storm-chaser]

That's some crazy latency, stable or not. I've not had anything dip out of the 50's yet.

You want to see crazy latency? This was my best effort on the Phenom II platform. There is always something faster out there, I just haven't seen it yet!



After some further tinkering and tweaking I was able to get it down to a sub 34ns result...

 

[PaulieG]

You want to see crazy latency? This was my best effort on the Phenom II platform. There is always something faster out there, I just haven't seen it yet!



After some further tinkering and tweaking I was able to get it down to a sub 34ns result...

I've managed similar latency on a couple sets of DDR3. I probably went through 25-30 different high end DDR3 kits seeking high speeds and low latencies. I just haven't experienced any super low DDR4 yet, but I've only been back at it for a couple of months. Give me time.

 

[storm-chaser]

I've managed similar latency on a couple sets of DDR3. I probably went through 25-30 different high end DDR3 kits seeking high speeds and low latencies. I just haven't experienced any super low DDR4 yet, but I've only been back at it for a couple of months. Give me time.

Yeah that's the catch 22 if you ask me. Naturally, the faster the RAM the higher the timings must be. Though according to the "how low can you go" benchmark, some elite overclockers are getting sub 30ns latency with DDR4 on Intel 9th/10th gen CPUs. I suspect DDR5 will have some teething problems just like early release DDR4 did, but at the end of the day it's anyone's guess. This is a comp we did a while back.

 

[storm-chaser]

So on this lazy Saturday, I've dedicated some time to fine tuning the 9600KF rig. This is where it stands on the memory front:

I know the base clock is high.. I will be witling that back down to acceptable levels.

 

[harm9963]

BIOS 1.2.0.1 for Aida64 coming soon!

 

[freeagent]

NF4 chipset was good for latency. I saw in the high 20s running cas 2. That’s why that pesky X2 Black has been at the top of the list for years lol.

 

[storm-chaser]

NF4 chipset was good for latency. I saw in the high 20s running cas 2. That’s why that pesky X2 Black has been at the top of the list for years lol.

AMD really nailed the 6400+ Black Edition,

and yes it is a very pesky little CPU which is why I had to go out and get one for myself!

This looks to be about as far as I can push it...

 

[storm-chaser]

Just for kicks I pulled out an 8GB kit of Teamgroup DDR4 RAM to test in this machine, It's rated at 3600 MHz, so my mission with this RAM is not all out bandwidth, it's latency... for a target of 35 ns or less...

Here is a baseline run at stock memory speeds and voltage.

 

[freeagent]

Nice man! I couldn't get below 62.2 with my 3600, hoping my 5600X will come tomorrow, but probably Wednesday.. hoping to get below 60 with it

This mine, all stock.. mostly.. some other timings are tuned a bit..

 

[freeagent]

This thing rips.

Edit:

Wasnt stable..

 

[freeagent]

Disgusting

 

[Makaveli]

Nice man! I couldn't get below 62.2 with my 3600, hoping my 5600X will come tomorrow, but probably Wednesday.. hoping to get below 60 with it

This mine, all stock.. mostly.. some other timings are tuned a bit..

View attachment 190578

You will have to run your 3200 at 3600 and decent timings to hit sub 60 on zen 3.

when i'm at 3200 CL 14 speeds I hit about 61ns

 

[tabascosauz]

Disgusting

View attachment 190932

Holy BALLS! Vermeer at 2066IF 1:1? What kind of black magic did you conjure up this time

 

[dgianstefani]

Holy BALLS! Vermeer at 2066IF 1:1? What kind of black magic did you conjure up this time

It's called not being stable, but stable enough to run a 2 minute bench.

 

[storm-chaser]

It's called not being stable, but stable enough to run a 2 minute bench.

Also known as top fuel dragster level stability... but I'm not critical of that in any way whatsoever. I do the same thing

You can never have enough MHz... wonder why that is? EDIT: not saying your ram is not stable at this speed, only commenting on the fact that you often have to push past reliability to get good numbers.

Disgusting

View attachment 190932

Really good latency for Ryzen. When AMD goes on par with Intel in terms of latency I will be the first to gobble up that processor, and they are getting closer with every release.

 

[tabascosauz]

It's called not being stable, but stable enough to run a 2 minute bench.

Wasn't my point. It's still a bit of a feat to pull off. Most chiplet CPUs you can't just overcome the IF wall by adding more VSOC and VDDG, you still get stuck at about the same freq.

 

[freeagent]

Holy BALLS! Vermeer at 2066IF 1:1? What kind of black magic did you conjure up this time

I figured I would let it run some memtest while I made my boys some lunch before I dropped them off at school. I don't know if its stable as a table, but it seems pretty decent..



Seems crunchy

 

[PaulieG]

Best so far on these Ballistix Elite Micron Rev. E

 

[storm-chaser]

This seems to be about the best I can get from this 16GB kit of Patriot Viper Steel 4133 C19
@
4500 C18 - if stable over the next few days It's probably going to be daily driven

 

[jorj02]

hey

 

[dgianstefani]

Gotta go fast. Been using this setup since late Dec.

Cache speed is what I like about Zen. Sure, your ram access latency is a little higher than intel, but the cache size and speed makes up for it in my opinion.

64MB of 11-1300GB/s L3 is no joke.