AMD Zen 2 CPUs to Support Official JEDEC 3200 MHz Memory Speeds

[aQi]

I highly doubt that... xD

I don't have any LN2 at my disposal, sadly. Maybe in a few years... we will have to wait and see.

I have memory that should be capable of 4800+ on air, though. Again, we shall see.

I wish this conference would just hurry up and tell us when Zen2 will be out. I am itchy!

4800+ hmmm sounds legit makes me wounder if it can cross 5000+ om air ? I guess you would definitely need LN2 for purpose of squeezing such speeds....Zen2 might be the answer to it giving more room for OCing it without the LN2 (correct me if im wrong)

Man i am curious. Alot of stuff is gona be glittering this Computex. Not just from Amd ofcorse its the major thing happening this year but other then that alot of goodies, definitely want to see that evga sr-3 dark and some upto 5ghz ram sticks...pci-e 4 nvme. A new geforce. Perhaps an Asus Mars.

I am surprised no news from intel at computex

Oh well when you break some bones (oc ram on air) do tag me

 

[londiste]

Well, we do have plenty of modules certified for JEDEC speeds of 2666 MHz, some at 2933 MHZ and a few at 3200 MHz, like this one, I believe. But unfortunately way too many are only certified for 2133 MHz.

I am willing to bet this is basically due to voltages. Pretty much all of the fast DDR4 modules run at 1.35V, not the JEDEC spec 1.2V.

 

[aQi]

I am willing to bet this is basically due to voltages. Pretty much all of the fast DDR4 modules run at 1.35V, not the JEDEC spec 1.2V.

Whats the Jedec spec 1.2v ???

 

[Zubasa]

Whats the Jedec spec 1.2v ???

Standard voltage of DDR4 is actually 1.2V, and 1.1V or less for LPDDR4 on phones.
Every high speed PC ram modules out there are technically overclocked, and usually runs 1.35V or more.

Actual JEDEC spec aka non-overclocked DDR4 3200 chips do exist, but so far I have yet to see them on PC ram kits.
I would expect those are more expensive and only used for ECC-ram on servers, but older servers do not offically support DDR4 3200.

 

[aQi]

Standard voltage of DDR4 is actually 1.2V, and 1.1V or less for LPDDR4 on phones.
Every high speed PC ram modules out there are technically overclocked, and usually runs 1.35V or more.
Actual JEDEC spec aka non-overclocked DDR4 3200 chips do exists, but so far I have yet to see them on PC ram kits.
I would expect those are more expensive and only used for ECC-ram on servers, but older servers do not offically support DDR4-3200.

I remember when HyperX broke the record they provided a special stick to msi of 8gb running @4200 stock. Perhaps we may see such at computex.

Man with ddr4 speed is just like achievable it wasnt as such with ddr3. I mean ddr4 crossed 5+ghz.

 

[Zubasa]

I remember when HyperX broke the record they provided a special stick to msi of 8gb running @4200 stock. Perhaps we may see such at computex.

Man with ddr4 speed is just like achievable it wasnt as such with ddr3. I mean ddr4 crossed 5+ghz.

Although, do note that the DDR speed refers to the IO speed, not the actual frequency of the ram IC themselves.
When you take that into account the % overclock of DDR4 vs DDR3 is not too impressive.

 

[aQi]

Although, do note that the DDR speed refers to the IO speed, not the actual frequency of the ram IC themselves.
When you take that into account the % overclock of DDR4 vs DDR3 is not too impressive.

What do you mean ?
And why in terms of IC you speak ? Yeh i mean why would an IC be considered anyway its always the bus that counts. Isnt it?

 

[Zubasa]

What do you mean ?
And why in terms of IC you speak ? Yeh i mean why would an IC be considered anyway its always the bus that counts. Isnt it?

The way DDR has been, was JEDEC usually targets around doubling the data rate of each generation.
The original target for DDR3 was 1600 and for DDR4 was 3200. DDR3 and even DDR2 did exceed that speed.
For DDR4 it has been years and we have yet to see any JEDEC spec PC ram over 2666 so far.

When you consider that many kits were overclock from DDR3 JEDEC 1600 to 2666, that is the same % increase from JEDEC 3200 to 5332.
So far for DDR4 neither of those speeds are common, and in the case of 5000+ pretty much requires extreme OC on the CPU.

Edit:
This is just on the frequency side of things.
When you also account for the actually Latency in ns, it really doesn't look too good.
This is one the many reasons why the actual performance difference isn't quite as good as the number would suggest.

 

[phill]

I wish this conference would just hurry up and tell us when Zen2 will be out. I am itchy!

You might need a wash or some cream if your getting itchy... Lord knows I'm not going to ask how you got it.....

I to am very excited, might make collecting Intel CPUs and a few motherboards even cheaper for me when the new AMDs come out and they are as powerful as they are being shown.. I cannot wait but I'm going to have to

 

[Chaitanya]

Standard voltage of DDR4 is actually 1.2V, and 1.1V or less for LPDDR4 on phones.
Every high speed PC ram modules out there are technically overclocked, and usually runs 1.35V or more.

Actual JEDEC spec aka non-overclocked DDR4 3200 chips do exist, but so far I have yet to see them on PC ram kits.
I would expect those are more expensive and only used for ECC-ram on servers, but older servers do not offically support DDR4 3200.

Hyperx Fury has Jedec 3200mhz RAM, even I was unsure of existence of DDR4 RAM faster than Jedec 2666 but I am unable to find those for sale anywhere in India so far.

 

[Aerpoweron]

Check the JEDEC specs here:

Wikipedia JEDEC for DDR4

I have to check on the JEDEC specified HyperX memory.

Edit: Found the HyperX Fury. Usually you have several JEDEC profiles (SPD Profiles) programmed into the memory. The highest SPD-Profile should be the 3200MHz one.

Spec sheet here:'

PDF file of the HyperX Fury memory

Has anyone have such modules?


I have seen the is even a JEDEC 3466 Spec. At least when you trust the Kingston Datasheets.
Datasheet

I think it is more likely that the 2933MHz is JEDEC spec, and the rest is XMP. And this also should be true for the 3200MHz Memory

 

[efikkan]

I'm very curious about these Kingston modules myself, if their actual SPD rating is 3200 MHz (and the 3466 MHz you found as well). It says "JEDEC/PnP", which is a term I'm unfamiliar with. Wikipedia might of course be incomplete/incorrect, especially since there several iterations of the DDR4 specs.

If anyone find a dump of all speed profiles on such memory, let me know.

 

[Aerpoweron]

I've written an e-mail to JEDEC asking about the fastest spec they have.
But it still looks more likely that the 2933MHz in the Kingston Modules are the JEDEC / SPD specs. And it even is the next one after 2666MHz. So it would be logical we have modules with 2933MHz at this time.

efikkan, check your computer with CPU-z. There you can see in the "SPD" tab what speeds and timings you memory is programmed with.

 

[efikkan]

efikkan, check your computer with CPU-z. There you can see in the "SPD" tab what speeds and timings you memory is programmed with.

I know, that's what I meant by someone dumping it, since I don't own any of these myself

 

[Aerpoweron]

I know, that's what I meant by someone dumping it, since I don't own any of these myself

I'm very curious about these Kingston modules myself, if their actual SPD rating is 3200 MHz (and the 3466 MHz you found as well). It says "JEDEC/PnP", which is a term I'm unfamiliar with. Wikipedia might of course be incomplete/incorrect, especially since there several iterations of the DDR4 specs.

If anyone find a dump of all speed profiles on such memory, let me know.

I think JEDEC just means JEDEC. These should be the official SPD profiles. And these are usually the profiles which are loaded from the Bios first upon installation. So they just added PnP to JEDEC, everybody knows what PnP is (was?)

 

[aQi]

I am pretty sure computex does will change the way its with JEDEC speeds most of the vendors especially kingston hyperX will offer speeds around 4000mhz

 

[Assimilator]

Why is this news? It was 2666MHz on Zen 1, it went up by 10% (266MHz) to 2933MHz on Zen 1+, now it's gone up another 266MHz to 3200MHz on Zen 2. So... completely expected linear progression.

 

[Mussels]

I think people are missing that its 3200 JEDEC, 4400+ (OC)

 

[zlobby]

Asrock have the best Ryzen boards imo and the taichi's are no exception

Have you actually used one? Because I have! They are anything but the best, trust me.

2 years after the launch Asrock are struggling with releasing a stable BIOS, where all features work as they should.

I dumped mine a long time ago and never looked back. I got sick of free beta-testing for them.

 

[NdMk2o1o]

Have you actually used one? Because I have! They are anything but the best, trust me.

2 years after the launch Asrock are struggling with releasing a stable BIOS, where all features work as they should.

I dumped mine a long time ago and never looked back. I got sick of free beta-testing for them.

Of course I have, see my system specs, also plenty more users on here have and also have the same opinion, I've had mine since ryzen 1st gen was released and have always updated the bios as soon as they have been released and have had 0 stability issues, even overclocking and using mismatched ram. I was running them at 2800 on the first bioses, so I would say you've just been unlucky asrock have been consistent in releasing new bioses following agesa updates and they've always improved imo

 

[zlobby]

Of course I have, see my system specs, also plenty more users on here have and also have the same opinion, I've had mine since ryzen 1st gen was released and have always updated the bios as soon as they have been released and have had 0 stability issues, even overclocking and using mismatched ram. I was running them at 2800 on the first bioses, so I would say you've just been unlucky asrock have been consistent in releasing new bioses following agesa updates and they've always improved imo

Hmm, you've been reading between the lines. I didn't say the OC was unstable.

They had issues with VM, Linux, security patches, whatnot. You may want to pay their forums a visit to check further. IDK, they may have it fixed by now, but 2 years in a row they have had not.

P.S. sorry, didn't want to hijack the thread.

 

[Aerpoweron]

zlobby, i never had the issues you described with the AsRock boards. Except the ones 20 years ago. However a Asus Rampage 4 won't run stable on my end.
One big advantage of AsRock is, that they releases Bios update, beta and normal ones for Z87 and Z77, which enabled NVME support.
To bring it back to Ryzen CPUs. Does anyone know how the Memory support will scale on the 300 and 400 chipset when you run a Ryzen 3000 CPU? Would be interesting to see how fast you can get since the memory controller is in the CPU

 

[zlobby]

To bring it back to Ryzen CPUs. Does anyone know how the Memory support will scale on the 300 and 400 chipset when you run a Ryzen 3000 CPU? Would be interesting to see how fast you can get since the memory controller is in the CPU

It's also a matter of memory slot topology and PCB tracing, not just the CPU's IMC. Check Yuri's bible on this topic. If I recall correctly, X370 will hardly reach above 3466 on all 4 slot, while X470 can reach approx. 3700. IDK about 2-slot configurations, though. That would be interesting, indeed.

 

[Mussels]

zlobby, i never had the issues you described with the AsRock boards. Except the ones 20 years ago. However a Asus Rampage 4 won't run stable on my end.
One big advantage of AsRock is, that they releases Bios update, beta and normal ones for Z87 and Z77, which enabled NVME support.
To bring it back to Ryzen CPUs. Does anyone know how the Memory support will scale on the 300 and 400 chipset when you run a Ryzen 3000 CPU? Would be interesting to see how fast you can get since the memory controller is in the CPU

better than a 2nd gen CPU, worse than a 3rd gen CPU on a 3rd gen board. My omniscient guess.