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Alder Lake-S leaks

Gerard said:
Weird looking cpu's, first pics ive seen of them, ihs looks pretty big.
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the ihs is definitely taller than previous Intel cpus, it's one of the reasons why new brackets are required if you want to reuse an existing cooler - but the good news is that it still works, you won't need a new cooler, just a different bracket
 
Gibbo said:
Its a bit different from the Rambus days though, I have several DDR5 samples in house and most memory manufacturers will have DDR5 available, mostly based in Micron IC but availability should be ok. Whereas on the Rambus side there was very little availability so the whole bundling was really the only way, I still remember my Abit TH7-II. :D

Also plenty of DDR4 options as well, the move to DDR5 does not yield really any improvement in our testing but at the same time were comparing against the best DDR4 to very early 4800MHz DDR5 and the DDR5 will of course stretch its legs more and more, were working on hopefully getting some 5000MHz plus kit in for launch but as the saying goes, there is simply not enough time at present to try and sort everything out, so we shall on that one.
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How is overclocking? We see lots of manufacturers every week bragging they've got their kit at 8000mhz+ but they don't mention how easy that is, is every DDR5 sample doing 8000mhz cl50 or is it rare?
 
G J said:
These leaks I'm sure are pre-planed, its always the same apps in the same order these people leak numbers for like the have some kind of advertising deal with.

If one is going to leak something why kinda half ass it kinda leaving people not really knowing what its going to be like unless they just making **** up.
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It seems it may be a thing of the past as well, in some caps


Geekbench is going to shortly remove the ability to store results in its database for any unreleased model names - so testing an unreleased CPU in geekbench 5, the result won't be visible on the internet

This won't stop the actual person doing the test to leak their own test themselves, but it stop dataminers from finding results
 
i5-12400f looks like the new budget king for sure.

4ghz all core at 78w out of the box, runs at 60c on the stock cooler. Beats the 5600x in single and multi threaded tests and beats the 11900k in single thread.
 
Journey said:
And the 12400f also makes everything from the 10th/11th Gen pointless unless you want more threads, so who gonna buy the dumpster fire that was 11th Gen 11900K etc. if you can get a *cough* £150 12400f that is better. ;)
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pretty strong chance the 12400 will beats both the 11900k and 10900k in gaming, immediately turning those parts into entry level components. As if 11th gen owners didn't feel stupid enough for buying a downgrade from 10th gen, now they slapped in the face by having the value of their CPU tank by 3 quarters :cry:
 
Info leak from Chinese guy who uploaded benchmarks and photos of the 12900k

list of claims:

* big.little doesn't work in windows 10, in windows 10 half the 12900k cores get disabled

* All new boards supports only DDR5 or DDR4 exclusively, nothing hybrid

* PCIe5 on z690 is only supplied to 1 GPU slot, all other board slots and m2 connectors are PCIe4. You likely have to wait for Raptor lake to use a PCIe5 Nvme drive

* Maximum temp before throttling is 108c. z690 chipset doesn't run hot, all boards feature passive cooling

* Disabling the Little cores in the Bios does not lower power draw, but allows the Big cores to clock higher.

* 12900k is able to reach 5.2/5.3ghz all core OC on the big cores. Little cores can't be OC'd

* RAM performance on games isn't great with DDR5. To beat 3600 CL14 DDR4 game performance he had to overclock his DDR5 kit to over 8000mhz. Generally observed that latency is 40% higher on DDR5 vs 4.

* With little cores disabled, big cores OCd to 5.3ghz and DDR5 at 8000mhz OC - he observed 50fps increase in counter strike global offensive vs the 5950x with 3600 CL14. This means the 12900k beat the 5950x by 7% in this game

https://www.bilibili.com/read/mobile?id=13574257



edit: should mention these tests are before Microsoft fixes the amd L3 cache bug so amd performance may be lowered due to that
 
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So apparently some people are wondering why boards cant support DDR4 and DDR5 in the same socket.

Well its not a conspiracy guys, it physically doesnt fit

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This clears up any remaining ambiguity

Intel has released a comprehensive guide for developers for Alder Lake. it's quite detailed and explains exactly how the architecture works, it goes into a lot of detail about how big.little works and how Thread director works

https://www.intel.com/content/www/us/en/developer/articles/guide/alder-lake-developer-guide.html


Interestingly, it mentions that if software is not optimized for big.little, that Thread director can sometimes incorrectly allocate an important process or task to one of the Little cores, resulting in lower performance.

Intel says this issue is very common in software that uses middle ware - such as a videogame that has built in DRM, lol. Intel suggests the developer asks the DRM maker to optimise their DRM for Thread director to avoid a situation where a game has lower performance because of it
 
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Also unlike the leaks have being saying, AVX-512 is NOT fused off the board.

Alder Lake does indeed support AVX-512, Dave2150 can rejoice! But it's only supported on the Big cores. If the system boots up and little cores are enabled, AVX 512 is blocked from running. AVX512 is only enabled when the little cores are disabled in the Bios.
 
Danger Bri said:
So it’s looking like the little cores would be disabled for gamers anyway considering the big cores are the only ones you can overclock. I honestly don’t like this big/little core thing that’s happening. I think it’s going to be disabled anyway like I say for most. Why not just have more bloody cores?
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Yeah the more I'm reading the more it's sounding like the first thing gamers will want to do on alder lake is head into the Bios and disable the little cores and overclock the big cores.

Doing this seems like it will ensure more consistent performance and likely higher gaming performance anyway since games don't yet need more than 8 cores. The only downside I can see is the potential loss of multi tasking performance as those little cores could used to run background tasks like YouTube, Spotify, screen recording, streaming etc - maybe after a few months the issues will be cleared up and disabling the little cores won't be needed anymore unless you must have AVX512.


For AMD, leaks suggest they are also planning to move to Big.Little for Zen5, so it can be a case of Alder Lake being the beta test - and software developers will spend the next year or so optimizing their software for Big.Little and then Raptor Lake and Zen 5 arrive all the bugs and niggles are worked out
 
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Intel is definitely back to being the go to CPU if you want to set 3D mark world records. Hopefully it translates to games. But so far I've never seen a CPU put up a fantastic timespy score and then suck at gaming, it would be a first if the 12900k can dominate so much in timespy and then not in games
 
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