Friday, August 28th 2020

AMD Zen 3-based EPYC Milan CPUs to Usher in 20% Performance Increase Compared to Rome

According to a report courtesy of Hardwareluxx, where contributor Andreas Schilling reportedly gained access to OEM documentation, AMD's upcoming EPYC Milan CPUs are bound to offer up to 20% performance improvements over the previous EPYC generation. The report claims a 15% IPC performance, paired with an extra 5% added via operating frequency optimization. The report claims that AMD's 64-core designs will feature a lower-clock all-core operating mode, and a 32-core alternate for less threaded workloads where extra frequency is added to the working cores.

Apparently, AMD's approach for the Zen 3 architecture does away with L3 subdivisions according to CCXs; now, a full 32 MB of L3 cache is available for each 8-core Core Compute Die (CCD). AMD has apparently achieved new levels of frequency optimization under Zen 3, with higher upward frequency limits than before. This will see the most benefits in lower core-count designs, as the amount of heat being generated is necessarily lesser compared to more core-dense designs. Milan keeps the same 7 nm manufacturing tech, DDR4, PCIe 4.0, and 120-225 W TDP as the previous-gen Rome. It remains to be seen how these changes actually translate to the consumer versions of Zen 3, Vermeer, later this year.
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20 Comments on AMD Zen 3-based EPYC Milan CPUs to Usher in 20% Performance Increase Compared to Rome

#1
deu
"Yes hello is this the police? I would like to report a murder..."

Jokes aside: if true in realworld application Intel needs to rev up the marketing machine to unknown heights
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#3
Punkenjoy
5% increased performance from frequency optimisation, i wonder what it would look like for desktop.

Also, i can't wait to see how the unified cache will have an impact for desktops CPU. Not much more cache than the total cache of Zen 2, but the fact that it's shared make it way more probable that the data is in it. I can't wait to see if larger cache will means increased latency.

I mean AMD doing good work in server market is all good, but as a gamer, i want Zen 3 to catch up Intel current offering at the very least. If it doesn't, that will be disapointing for me. But as i have a x570 motherboard, i might anyway get an upgrade if the price are right...
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#4
Jism
Punkenjoy
5% increased performance from frequency optimisation, i wonder what it would look like for desktop.
Proberly a reworked XFR that is more suitable for enterprise workloads.
Also, i can't wait to see how the unified cache will have an impact for desktops CPU. Not much more cache than the total cache of Zen 2, but the fact that it's shared make it way more probable that the data is in it. I can't wait to see if larger cache will means increased latency.

I mean AMD doing good work in server market is all good, but as a gamer, i want Zen 3 to catch up Intel current offering at the very least. If it doesn't, that will be disapointing for me. But as i have a x570 motherboard, i might anyway get an upgrade if the price are right...
What, 5 FPS less? AMD's current lineup for consumers are barely slower then intel's setup. And in multithreading it just beats intel all over the place.
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#5
NeuralNexus
Jism
Proberly a reworked XFR that is more suitable for enterprise workloads.



What, 5 FPS less? AMD's current lineup for consumers are barely slower then intel's setup. And in multithreading it just beats intel all over the place.
Some of these INTEL fanboys are just slow...
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#6
prtskg
Punkenjoy
5% increased performance from frequency optimisation, i wonder what it would look like for desktop.
That would be approx 200MHz frequency improvement.
Also, i can't wait to see how the unified cache will have an impact for desktops CPU. Not much more cache than the total cache of Zen 2, but the fact that it's shared make it way more probable that the data is in it. I can't wait to see if larger cache will means increased latency.
Similar to the difference between 3300X and 3100.
Posted on Reply
#7
kapone32
Punkenjoy
5% increased performance from frequency optimisation, i wonder what it would look like for desktop.

Also, i can't wait to see how the unified cache will have an impact for desktops CPU. Not much more cache than the total cache of Zen 2, but the fact that it's shared make it way more probable that the data is in it. I can't wait to see if larger cache will means increased latency.

I mean AMD doing good work in server market is all good, but as a gamer, i want Zen 3 to catch up Intel current offering at the very least. If it doesn't, that will be disapointing for me. But as i have a x570 motherboard, i might anyway get an upgrade if the price are right...
The easiest way to ascertain what you are talking about is to look at the 3100x vs the 3300x in benchmarks and real world the 3300x just feels faster.
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#8
Punkenjoy
kapone32
The easiest way to ascertain what you are talking about is to look at the 3100x vs the 3300x in benchmarks and real world the 3300x just feels faster.
Yeah, 2x8 MB vs 1 x 16 MB. But there is more than that. First, the 3100x have lower clock and boost.

But the 3100x have to do some core to core communication via the infinity fabric where the 3300x don't. The good news is all 8 cores on zen3 will be able to communicate directly, so it will work the same way.

But we will see. Also it's fun to see that people say i'm an Intel fan boy when i have a X570 Motherboard (that imply i am running an AMD CPU). But i don't see why it's so offensive that i want AMD to catch up in gaming performance?

is that a shame? a big no no ?

That concept is strange to me. I hope Zen 3 will beat 10th gen Intel lineup in gaming. I don't see what is the issue there.
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#9
kapone32
Punkenjoy
Yeah, 2x8 MB vs 1 x 16 MB. But there is more than that. First, the 3100x have lower clock and boost.

But the 3100x have to do some core to core communication via the infinity fabric where the 3300x don't. The good news is all 8 cores on zen3 will be able to communicate directly, so it will work the same way.

But we will see. Also it's fun to see that people say i'm an Intel fan boy when i have a X570 Motherboard (that imply i am running an AMD CPU). But i don't see why it's so offensive that i want AMD to catch up in gaming performance?

is that a shame? a big no no ?

That concept is strange to me. I hope Zen 3 will beat 10th gen Intel lineup in gaming. I don't see what is the issue there.
In fact I have both CPUs and they both OC to 4.4 GHZ so the clock speed is not the difference. It is the lack of infinity fabric connectivity the 3300x is 1 CCX and the 3100x is 2 CCXs. In everything I have tried the 3300x is about 12% faster than the 3100x. It even rivals and is faster (in some scenarios) than the 3600 but you can't buy one so it doesn't matter.
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#10
Vayra86
o_O

An IPC increase post 2020. What
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#11
cellar door
In reality AMD needs to keep the foot on the pedal and land some large hyperscaler deals. For ex. Amazon just replaced their fleet of 18c xeons with 36c drop in replacement - these were custom made skus that are not even available on ARK. And they made this deal even though AMD is offering faster chips.

AMD basically needs to outperform Intel in the server space for the next 2 generations in order to gain a significant foothold.
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#12
PooPipeBoy
I'm thinking about retiring my i5 4670K in favor of a Zen 3 six or eight core. I was going to wait until 2021 because I assumed 2020 would bring out a Zen 2+ with only a minor performance bump compared to Zen 2. I might've been wrong. It's early days but the rumors are suggesting that it would be a good time to upgrade.
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#13
R0H1T
cellar door
AMD basically needs to outperform Intel in the server space for the next 2 generations in order to gain a significant foothold.
Yes & I'd argue the biggest reason is $$ as Intel's still outspending AMD probably 10:1 if not 20:1 just to retain clients. Not all of it is shady deals though, but it does tell you what most of us already know ~ it's all about the money, all the time!
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#14
Vya Domus
cellar door
In reality AMD needs to keep the foot on the pedal and land some large hyperscaler deals. For ex. Amazon just replaced their fleet of 18c xeons with 36c drop in replacement - these were custom made skus that are not even available on ARK.
I am fairly confident no such custom chip exist, Amazon doesn't want Intel either. They are looking to replace everything with their own ARM chips.
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#15
JohnSuperXD
AMD finally reached ZEN's final form and this is what Zen should be like.
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#16
thesmokingman
R0H1T
Yes & I'd argue the biggest reason is $$ as Intel's still outspending AMD probably 10:1 if not 20:1 just to retain clients. Not all of it is shady deals though, but it does tell you what most of us already know ~ it's all about the money, all the time!
And they just dumped 10 billion in buybacks to bolster their plummeting stock price.
Posted on Reply
#17
zlobby
deu
Jokes aside: if true in realworld application Intel needs to rev up the marketing machine to unknown heights
Wouldn't do them any good right now. Their reputation is quite stained now and no good benchmark is in sight.
Glory days of 9900K are long gone. It was only good for gaming, if you didn't account for all security patches that brought it back to Quad era, so I really don't get all the hype.
JohnSuperXD
AMD finally reached ZEN's final form and this is what Zen should be like.
There is always room for improvement. Let's hope intel don't go completely kaput. Some competition would be nice.
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#18
droopyRO
zlobby
Let's hope intel don't go completely kaput.
Zero chance of that happening.
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#19
zlobby
droopyRO
Zero chance of that happening.
It's not like they aren't trying hard. :D
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#20
JohnSuperXD
I hope when they transition into the new generation of ZEN or new wave of Zen, they will make some exciting changes and ones that fit their vision of future computing
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