B2 stepping of Ryzen 5000 CPUs Spotted

I wonder if these might overclock better?

 

That God hopefully they are finally fixed.

 

Fixed what?

 

Fixed for volume production !

 

LOL
they've been in volume production from the jump. they're only the #1 cpu for enthusiasts (by sales) and in some regions the #1 cpu(s) overall

 

Temperatures? I don't know...
Hopefully the yield is better and prices come a bit down?
Intel new CPUs must be near too.

 

Temps won't go down unless it has two active CCDs.

 

That is not how steppings are noted. That is a revision number and the two are not the same. Steppings refer specifically to the lithography masks. Revisions are changes to any step in the fabrication process and there are usually more than a hundred steps involved. Here is a screenshot from CPU-Z that shows how the two appear :



As you can see, the revision of that chip was B0 so the new one is two versions later.

 

with Ryzen, simply changing the IO Die without any change to the Chiplets can trigger a revision bump.

 

Yeah but mostly in DIY market, they still have to overthrown Intel in the OEM. I guess that B2 stepping is a small step to help.

 

Yield seems fine. I'm already seeing the 5800X on sale for $370. Still more than I'm willing to spend but that's a hefty price decrease from MSRP.

 

probably fixed some of the bugs listed in here https://www.amd.com/system/files/TechDocs/56683-PUB_1.04.pdf or maybe some new ones

could also be related to the new 3d v cache chips

 

Hardware bug fixes would be neat with less workarounds in bios or the chipset driver but yeah the cache CPU's was what I was thinking of too, thought there was a earlier stepping too but maybe the integrated GPU models didn't see any changes like that when those were released.

Not sure if the stepping had to be updated for the cache or not either, newer has to be better though something being fixed or whatever.
Unlike hardware revisions were components are stripped out changed to be cheaper.

 

my thinking has the b2 stepping being the v-cache capable die ,minus the vcache, would make sense if they are going to use the same production lines as the current chips.

 

Isn't it common practice for cpus to have more steppings on their production lifetime ? What is strange exactly here ?

 

Considering the 12900K is rumored to cost more than 800€ I'd say 370€ for a 5800X is a good deal looking at price/perf.

 

so far amd hasn't bumped the stepping for any of their zen cpus for a given product generation, (with maybe the technical exception of the 1600af, though it may not count since its on a different process node ). It's the first time in a while that we will see a product of the same name receive a newer stepping.

 

Huh.. i am wrong then ! All these years i thought it is almost standard to improve yields and what not.

 

They do improve yields but that generally doesn't result in a newer stepping, steppings are usually changes to fix bugs or make improvements to the design.
intel/amd used to release alot of steppings with penryn we got c0 c1 e0 all within a pretty short period of time all of which were retail chips, intel was also a little loose with their steppings too, they would make pretty significant changes, most notably the E0 stepping of penryn actually adds a new instruction and changes the cache timings allowing them to clock much higher.

nowadays most cpus will be lucky to see a couple steppings hit retail,

for reference here is a the revsion guide for old athlon xp chips https://www.amd.com/system/files/TechDocs/25759.pdf there are 13 different steppings! , then we look at 10h (phenom) and there are 12!, bulldozer https://www.amd.com/system/files/TechDocs/48063_15h_Mod_00h-0Fh_Rev_Guide.pdf there are only 2 publicly released steppings, zen 2 only has 1 retail stepping https://developer.amd.com/wp-content/resources/56323-PUB_0.78.pdf , admittedly some of the older ones include engineering samples, but still they're definitely not releasing new steppings into the wild the way they used too.

probably for the best tbh, means cpus are less buggy in general.