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AMD Zen 3 (5000 Series), rumored 17% IPC gain.

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Rumours on Zen 4 is that it will be not as much IPC boost as Zen 3


Which goes against other rumours saying ipc upwards of 17%. Getting to that stage where the "tech sites" are doing their usual routine of posting stories that say opposing things just so they can point to one on launch and say they were right.
 
Which goes against other rumours saying ipc upwards of 17%. Getting to that stage where the "tech sites" are doing their usual routine of posting stories that say opposing things just so they can point to one on launch and say they were right.
I think the leaks your referring too were zen3 or otherwise known as Ryzen 4000, not zen4/Ryzen 5000.
 
Zen 4 is getting a complete redesign of the chiplet and a 7nm shrink on the IO die, by all accounts, but I've not seen any rumours at to what performance uplift that will bring. As for Zen 3 IPC over Zen 2, 15% seems to be the average boost now. Started off as 15-20%, Adored TV and a few others had information which suggested 10-15%, now we're seeing 10-17%. All workload dependant of course.

Combine that with small base clock bumps and it should be quite nice, which is why Intel are supposedly bringing Rocket Lake forward.

I wonder if we'll see similar outcry when half of the Intel 400 motherboards don't support PCIe 4 with Rocket Lake?
 
Regarding the Zen 3 compatibility thing, it's irrelevant to my situation - I've been much more interested in seeing you lot go on about it :p

I've never done just a CPU swap, partly "because Intel" but mainly because I don't upgrade often and so I'll want all-new stuff when I do. Still running a 3570K, and part of me says I should hold out even longer for DDR5 etc. But I've decided that 4K is still 3+ years off for me, so I'm currently planning to buy 3700X's successor and keep that until at least the 2nd gen of AM5 processors (Zen 5 / 6000 series, I guess) or maybe Intel will make a big comeback by then. We'll see.
 
I don't think many people care about pcie gen 4 tbh else everyone would have brought X570 instead of B450.
When the only PCIe 4 devices were a pair of Radeon cards and overpriced SSDs for sure, but now the new GPUs from both camps are PCIe 4, the SSDs are getting cheaper and the PC Gaming Master Race is going to see a major storage and I/O performance deficit to the new consoles. PCIe 4 is starting to matter.
 
When the only PCIe 4 devices were a pair of Radeon cards and overpriced SSDs for sure, but now the new GPUs from both camps are PCIe 4, the SSDs are getting cheaper and the PC Gaming Master Race is going to see a major storage and I/O performance deficit to the new consoles. PCIe 4 is starting to matter.
SSDs have been going up in price lately and I can't see pcie 4 making much difference over a good pcie3 nvme. The tech is coming out on consoles to leverage more ssd speed but don't forget the vast majority of PC gamers don't even have an SSD for a game drive let alone a gen 4 nvme so I can't see much changing here for a couple of years atleast.

Gpus have only just began to saturate pcie 2 so it will be around 5 years before the top Gpus saturate gen 3 by which time these ryzen CPUs would probably be a bottleneck.
 
SSDs have been going up in price lately and I can't see pcie 4 making much difference over a good pcie3 nvme.
Perhaps, but the Gen 4 SSDs are significantly faster, and that's going to be important going forward.
The tech is coming out on consoles to leverage more ssd speed but don't forget the vast majority of PC gamers don't even have an SSD for a game drive let alone a gen 4 nvme so I can't see much changing here for a couple of years atleast.
I entirely disagree. It's not just leveraging more speed as the stand-alone metric, it's what devs can do with the game engines because of that speed. Hell, the PS5 is pitched as almost instant-access because of how the SSD is tied into system and GPU memory. There are going to be games in the consoles that simply cannot run on mechanical drives, and possibly even SATA SSDs. We're not talking "bad console ports" here, we're talking AAA games that won't ever see the light of day on PC. But then the PC Gaming Master Race is collectively a bunch of elitist morons anyway so they probably won't give 2 hoots. But then, imagine if CoD or MW on the console suddenly could things the PC version can't...

Besides, games have had "minimum specs" printed on the box for donkey's years, who's to say we won't see "500GB Gen 3 NVMe SSD" added to that list in the next year?
Gpus have only just began to saturate pcie 2 so it will be around 5 years before the top Gpus saturate gen 3 by which time these ryzen CPUs would probably be a bottleneck.
Yeah, but that's pretty much irrelevant to Joe Average. If Nvidia have "PCIe 4 ready" slapped on the box then Joe Average is going to think "well I need a PCIe 4 system". That's Zen 2, Zen 3 and Rocket Lake. That's now, 8 months and 12 months down the line.
 
Rumours on Zen 4 is that it will be not as much IPC boost as Zen 3

Zen 4 is brand new architecture from ground up. The changes to IF3.0 alone, not even counting DDR5, would bring massive system performance boost over Zen 3, let alone Zen 2. Hell we do not know if it will be tapping on GPU HBM & GDDR6 memory also, as the IF3 design already states that.
 
AMD Loses Either Way: B450 & Zen 3 Compatibility Deep-Dive, 32MB ROM Issues, & More

"Lisa Su's recent response to a fan indicates they might try and find some partial solution or middle-ground"

It seems that Pre-Matisse CPUs (Zen/Zen+) can't even talk to a 32MB bios rom chip without a workaround because they only have a 16MB address range, so just putting in a 32MB bios chip wont solve the issue.
 
Posts on reddit saying they emailed AMD and they are "working on options" for support or something, unless its trolls.

Rumours on Zen 4 is that it will be not as much IPC boost as Zen 3

The thing is you only see large IPC boosts when the architecture is new. Especially for a ryzen - AMD wanted Ryzen out of the door ASAP to bring in money - that left a lot of places in the architecture to improve - that's what we've seen with zEn+ and zen2. Zen3 brings more tweaks. But I could also believe they are running out of big things to change. We saw this with Intel - they brought out Skylake and Intel was able to tweak some things for a couple generations and after that they had done everything they could and it's flatlined every since.

Now Zen4 May only have a small IPC gain but AMD is making another change which will really help workload performance and that's 4x SMT multi threading - so a 16 core Zen 4 shows up as 64 threads in Windows - so even if Zen 4 has no IPC gain that along will offer a good generational performance gain
 
It seems that Pre-Matisse CPUs (Zen/Zen+) can't even talk to a 32MB bios rom chip without a workaround because they only have a 16MB address range, so just putting in a 32MB bios chip wont solve the issue.
My pair of 2600X running on B450 Mortax MAX would disagree. Unless it was MSI that did the workaround, and if it was there's nothing to stop other board vendors doing the same. Other than the loss of revenue by supporting EOL products and thus removing the necessity for customers to upgrade their boards, of course.
 
My pair of 2600X running on B450 Mortax MAX would disagree. Unless it was MSI that did the workaround, and if it was there's nothing to stop other board vendors doing the same. Other than the loss of revenue by supporting EOL products and thus removing the necessity for customers to upgrade their boards, of course.
I would recommend watching the video but the short answer is yes MSI did a workaround.
 
AMD Loses Either Way: B450 & Zen 3 Compatibility Deep-Dive, 32MB ROM Issues, & More

"Lisa Su's recent response to a fan indicates they might try and find some partial solution or middle-ground"

It seems that Pre-Matisse CPUs (Zen/Zen+) can't even talk to a 32MB bios rom chip without a workaround because they only have a 16MB address range, so just putting in a 32MB bios chip wont solve the issue.
Steve Burke isn’t the golden standard for being right. He is got a loud squeaky voice And he is definitely wrong on many accounts in that video. Pre-mattise CPUs can definitely work with MAX board. I have a system that slots in a B450 Max that is working just as intended. I really don’t know if Steve does any editorial validation or he just gobs off whatever is on his mind. I think the after is more likely to be the case as he often contradicts himself from one video to another.

In all likely situation I think MSI particularly can offer a hugh and substantial discount for owners of B450 Max boards for the newer B550 boards. This can be arranged with a compensation from AMD. This way it is clean and anyone wants to move onto the newer tech can move on. However it doesn’t solve MSI’s pile of old B450 max boards.

the next likely situation is that AMD release codes and board manufactures provide support for Zen3 on MAX boards only. This can also be done at out of box level.
 
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