Info 64MB V-Cache on 5XXX Zen3 Average +15% in Games

[Kedas]

Well we know now how they will bridge the long wait to Zen4 on AM5 Q4 2022.
Production start for V-cache is end this year so too early for Zen4 so this is certainly coming to AM4.
+15% Lisa said is "like an entire architectural generation"

 

[Saylick]

How is that even physically possible? I was also under the impression the stacked cache ads a bit more heat since the 5800X3D is clocked lower.

The 4.8 GHz wasn't a true OC. See my post above.

 

[nicalandia]

Someone overclocked dual Milan-X with V-Cache to 7773X to 4.8 GHz on all 128 cores.

Dual AMD EPYC 7773X 3D V-Cache Milan-X CPUs With 128 Cores & 1600 MB of Cache Overclocked To 4.8 GHz Across All Cores on Air-Cooling

Dual AMD EPYC 7773X Milan-X CPUs with 128 cores and over 1600 MB of Cache have been overclocked to 4.8 GHz across all cores on air-cooling.

wccftech.com

Looks like that someone is Chinese content creator 穷三代kenaide科技 and he is the one that purchased the ES/QS sample it was being offered by the Chinese Taobao retail outlet.

This is the screen shot of the original

 

[RnR_au]

That's . . . interesting. I don't think we're going to learn much more unless there are head-to-head comparisons done between B0 and B2-stepping Vermeer @ static clocks/volts.

This might be coming shortly. Planet3DNow managed to pick up a 5800X B2 from retailer in Germany. Seems to be easier to cool.

However, what is immediately noticeable is that the CPU is far easier to cool than the old version of the 5800X . This model in particular has been tricky so far, since its 105 W TDP or 143 W PPT is concentrated on just one compute die in addition to the IO die. With the 5900X , for example, which is classified in the same TDP class, the heat dissipation is distributed over two compute dies. The 5800X was correspondingly hot-headedso far on the way. A copy I installed in August 2021 could not be tamed with a budget cooler, peak loads immediately caused the die temperature to shoot up to over 90 °C, so I had to install a Scythe Mugen 5 to get below 90 °C CPU temperature to stay. With the B2 stepping, on the other hand, the CPU runs at a peak of 85 °C with Prime95, although only a comparatively cheap Arctic Freezer 34 CO is installed. It's not like he's not hitting his PPT limit. Almost 140 W are also on the clock here:

German article autotranslated - https://www-planet3dnow-de.translat...ch=http&_x_tr_sl=de&_x_tr_tl=en&_x_tr_hl=ende

Will be interesting to see what AMD has done, if anything, to this new B2 stepping.

 

[Saylick]

This might be coming shortly. Planet3DNow managed to pick up a 5800X B2 from retailer in Germany. Seems to be easier to cool.



German article autotranslated - https://www-planet3dnow-de.translat...ch=http&_x_tr_sl=de&_x_tr_tl=en&_x_tr_hl=ende

Will be interesting to see what AMD has done, if anything, to this new B2 stepping.

Bodes well for V-cache variants then, if all V-cache versions use the B2 stepping. Seems odd now that AMD had to reduce base and boost clocks at all if the B2 stepping is easier to cool. Must be a power thing, or they didn't really want to spend the time validating V-cache with the same clocks so it was just easier to rate it at lower clocks and call it a day. Regardless, it does sound like you can overclock B2 parts easier, with and without V-cache.

 

[DrMrLordX]

This might be coming shortly. Planet3DNow managed to pick up a 5800X B2 from retailer in Germany. Seems to be easier to cool.

They'd best use the same motherboard + firmware revision to compare the B2 stepping chip to an existing B0 chip.

 

[moinmoin]

They'd best use the same motherboard + firmware revision to compare the B2 stepping chip to an existing B0 chip.

Already noted in the article: "Unfortunately I don't have a B0-Stepping 5800X at hand right now, with which one could do direct comparison tests on the same mainboard."

 

[Joe NYC]

Will be interesting to see what AMD has done, if anything, to this new B2 stepping.

I am going to guess that the most important thing (aside for enabling V-Cache) will be on the server side. Google Cloud and I believe also Azure have been itching to release "Confidential Computing" on AMD Milan platform, but it keeps saying "Coming Soon" for some time.

There was some errata in the SEV instructions in earlier generations, and I would bet those got fixed and will finally allow these Cloud providers to fully enable Confidential Computing into production.

Just today, Google Cloud released a new instance C2D based on Milan, and again, it says "Coming Soon" for Confidential computing. So maybe these companies just need to accumulate enough of the B2 stepping Milan parts, so that when customers turn on the "Confidential Computing" flag, they have enough nodes with Milan B2 to serve them.

 

[eek2121]

Bodes well for V-cache variants then, if all V-cache versions use the B2 stepping. Seems odd now that AMD had to reduce base and boost clocks at all if the B2 stepping is easier to cool. Must be a power thing, or they didn't really want to spend the time validating V-cache with the same clocks so it was just easier to rate it at lower clocks and call it a day. Regardless, it does sound like you can overclock B2 parts easier, with and without V-cache.

AMD already stated it was a power thing:

AMD CPUs in 2022: Zen 4 in Second Half, Ryzen 7 5800X3D with V-Cache by Spring (anandtech.com)

The frequencies are lower than the regular 5800X? The cache does add a few watts to the power both in terms of idle and load. Rather than bin a stricter chiplet, the decision was made to reduce the frequency a little, but still allow overclocking. The chip, while listed at 105 W, still has the 142 W package power tracking for motherboards that support it.

 

[fleshconsumed]

With Zen4 on track to be shipped mid 2022 really hoping I can pick up a couple of 5950x B2's on the cheap at the end of the year. Maybe Microcenter will have a blow out sale November/December - fingers crossed.

 

[DrMrLordX]

really hoping I can pick up a couple of 5950x B2's on the cheap at the end of the year.

How will you know they're B2-stepping until after you get them home? They may have the same SKU as older B0 products.

 

[moinmoin]

How will you know they're B2-stepping until after you get them home? They may have the same SKU as older B0 products.

I'm sure some stores will mark them differently (but then they are bound not to fall as much in price as the no-B2 chips, heh).

 

[DrMrLordX]

I'm sure some stores will mark them differently (but then they are bound not to fall as much in price as the no-B2 chips, heh).

I mean you can look for the dates on the lid I think . . . and return ones that look too old. Pretty sure you can see the lid through the little window in the box.

 

[Abwx]

How will you know they're B2-stepping until after you get them home? They may have the same SKU as older B0 products.

6 months is enough to clear current inventories of any B0 SKU that are likely no more produced by AMD.

 

[Abwx]

dp

 

[Shamrock]

What? Zen 4 might launch in APRIL!?

AMD 5nm Zen 4-based Ryzen 7000 might launch in April featuring 18% IPC bump

A new rumor suggests that AMD has sped up the manufacturing of its 5nm-based Zen 4 CPUs which may land early in April, probably to better compete with Intel's 12th Gen Alder Lake-S parts.

www.neowin.net

Another link (he's skeptical)

 

[Thunder 57]

What? Zen 4 might launch in APRIL!?

AMD 5nm Zen 4-based Ryzen 7000 might launch in April featuring 18% IPC bump

A new rumor suggests that AMD has sped up the manufacturing of its 5nm-based Zen 4 CPUs which may land early in April, probably to better compete with Intel's 12th Gen Alder Lake-S parts.

www.neowin.net

Another link (he's skeptical)

Where has this crap started from? Sounds like someone said Q2/April and it was repeated over and over again until it was thought of as fact.

H2 2022. They may be able to bring up to Q3 2022, but we shall see.

 

[igor_kavinski]

If this is true, AMD may be getting something else ready to counter Raptor Lake. If they have warehouses full of CPU's ready to sell, they are probably thinking, why wait? Let's demolish Intel NOW.

 

[Thunder 57]

If this is true, AMD may be getting something else ready to counter Raptor Lake. If they have warehouses full of CPU's ready to sell, they are probably thinking, why wait? Let's demolish Intel NOW.

Why bother with the 5800X3D then?

 

[ryanjagtap]

Why bother with the 5800X3D then?

A last hurrah for the AM4 platform? And many won't jump onto AM5 and zen 4 immediately, it will only be the early adopters who will pay the premium for the newest platform and still costly DDR5 modules.

 

[igor_kavinski]

Why bother with the 5800X3D then?

As an upgrade path for their existing 5000 series or 3000 series customers. Originally when they announced V-cache, I think they didn't believe Intel would release something as good as 12th gen, especially the high volume parts that are giving great single threaded performance at a lower price than AMD.

This is my friend's i5-12400 ($208 at Newegg) without HT and CL15 DDR4-3000: ASUS System Product Name - Geekbench Browser

Ryzen 5600X ($260 at Newegg): AMD Ryzen 5 5600X Benchmarks - Geekbench Browser

Also, Zen 3 inventory could be nearing its end so Zen 4 may need to launch early to keep AMD in the game.

 

[deasd]

5800X3D looks just to be a symbolic product after all. Zen4 is around the corner since AMD decide to accelerate AM5 release. For old AMD users with mobo who aren't interested in DDR5 might be the potential buyers.

 

[MadRat]

5800X3D's launch looks more and more like K6-III's launch. Way late but sure is nice for an upgrade if you want to hold onto a legacy system. Or we should just save up to go 6000 for a nice leap forward, just as we went Athlon back in the day because K6-III was largely vaporware at the announcement.

 

[DrMrLordX]

What? Zen 4 might launch in APRIL!?

It's a rumour. I wouldn't take it for granted though. April/May is about when AMD should be launching a new gen product, but that doesn't mean they're gonna do it.

Originally when they announced V-cache, I think they didn't believe Intel would release something as good as 12th gen

I mean, it ain't that good.

 

[Insert_Nickname]

because K6-III was largely vaporware at the announcement.

Reason being the K6-III was the last thing on the order list. It was made when everything else was fulfilled. Not to mention being a rather large die due to the massive (for the time) 256KB on-chip L2 cache.

We had one at work. Was a real beast back then. That L2 coupled with 2MB onboard L3 kicked butt. Never did manage to get one for myself however.

 

[Thibsie]

Reason being the K6-III was the last thing on the order list. It was made when everything else was fulfilled. Not to mention being a rather large die due to the massive (for the time) 256KB on-chip L2 cache.

We had one at work. Was a real beast back then. That L2 coupled with 2MB onboard L3 kicked butt. Never did manage to get one for myself however.

I got one. It was a hell of beast with Win2K.
Overclocked like.... Well it did not.

I wish I could get K6-II+ or K6-III+ but could not.