News 5th-Gen Emerald Rapids CPU Leak Shows 60 Cores, 420MB Cache

[Admin]

Hardware leaker YuuKi_AnS shares specifications and benchmarks for the upcoming Xeon Platinum 8580 (Emerald Rapids) processor.

5th-Gen Emerald Rapids CPU Leak Shows 60 Cores, 420MB Cache : Read more

 

[thestryker]

Depending on where Intel takes the additional cache we could end up with a twisted circumstance of an overclocked Xeon W being the fastest gaming chip on the market. Leaked SKUs show down to 48c with 300MB L3 so if they can carry that cache/core ratio down we could hypothetically see a 16c workstation chip with 100MB L3. Unless EMR overclocks worse than SPR this could easily be the fastest gaming CPU so long as you were willing to toss efficiency out the window.

It's still not something I'd personally do because the platform costs are way too high for me (even though it'd be the perfect replacement for my system), but I'd certainly find it funny.

 

[bit_user]

Depending on where Intel takes the additional cache we could end up with a twisted circumstance of an overclocked Xeon W being the fastest gaming chip on the market. Leaked SKUs show down to 48c with 300MB L3 so if they can carry that cache/core ratio down we could hypothetically see a 16c workstation chip with 100MB L3. Unless EMR overclocks worse than SPR this could easily be the fastest gaming CPU so long as you were willing to toss efficiency out the window.

It's still not something I'd personally do because the platform costs are way too high for me (even though it'd be the perfect replacement for my system), but I'd certainly find it funny.

We saw that example of someone clocking 56-core SPR to 5.5 GHz (all-core) on 1.9 kW. Cooled using liquid nitrogen, which means each run typically destroys both the CPU and motherboard. I wonder how much power it would take to clock the small die W-2400 series that high (coincidentally featuring up to 24 cores), and how high you could clock them on chilled water.

Intel's Xeon W9-3495X Can Draw 1,900W of Power

Intel's new HEDT CPU leaves behind Skylake-X in terms of power consumption.

www.tomshardware.com

It's not only the size of L3 that matters. Here's what Chips & Cheese found. Pay attention to the L3 section.

"Intel’s decision to trade latency for capacity is likely driven by their focus on high vector performance, as well as an emphasis on high L3 capacity over L3 performance. Sapphire Rapids suffers from an extremely high L3 latency around 33 ns. L3 latency also regressed by about 33% compared to Ice Lake SP. I think this regression is because Intel’s trying to solve a lot of engineering challenges in SPR."

Source: https://chipsandcheese.com/2023/03/12/a-peek-at-sapphire-rapids/
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One thing to note is that they're using 2 MiB pages. I think that's probably not a good move for gaming systems, leaving me to wonder what kind of difference it makes.

Another thing I wonder is how it would look on the W-2400, which has a monolithic die, since your L3 lookups wouldn't have to traverse the die interconnects or search as many L3 slices. I also wonder what Intel will do, regarding the small die Xeon W-2500. Will it have just one of those two big tiles that we see in the 60-core models?

 

[thestryker]

Another thing I wonder is how it would look on the W-2400, which has a monolithic die, since your L3 lookups wouldn't have to traverse the die interconnects or search as many L3 slices. I also wonder what Intel will do, regarding the small die Xeon W-2500. Will it have just one of those two big tiles that we see in the 60-core models?

That's exactly what I was thinking: if the high L3 capacity goes down to the MCC die it could lead to some really interesting performance numbers.

I was kinda disappointed that nobody seemed to get any of the W-2400 overclockable chips in, because I thought they'd be really interesting to see.

 

[bit_user]

I was kinda disappointed that nobody seemed to get any of the W-2400 overclockable chips in, because I thought they'd be really interesting to see.

Here's one example of W7-2495X overclocking:

SkatterBencher #59: Intel Xeon w7-2495X Overclocked to 5200 MHz - SkatterBencher

We overclock the Intel Xeon w7-2495X up to 5200 MHz with the ASUS Pro WS W790-Ace motherboard and EK-Pro water cooling

skatterbencher.com

I think 5.2 GHz is just the fastest he got any cores to run. I only skimmed it, but the claimed, peak all-core frequency of 4.9 GHz was achieved with AVX either downclocked or disabled. That wouldn't give me confidence to recommend Emerald Rapids as the top gaming machine.

 

[Demon of Elru]

I was hoping this could replace my X299 system but we'll see. Its a really expensive platform for a non gaming purpose. Though it would do gaming just fine I imagine. Glad I held out getting Sapphire Rapids.

 

[thestryker]

Here's one example of W7-2495X overclocking:

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SkatterBencher #59: Intel Xeon w7-2495X Overclocked to 5200 MHz - SkatterBencher

We overclock the Intel Xeon w7-2495X up to 5200 MHz with the ASUS Pro WS W790-Ace motherboard and EK-Pro water cooling

skatterbencher.com

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I think 5.2 GHz is just the fastest he got any cores to run. I only skimmed it, but the claimed, peak all-core frequency of 4.9 GHz was achieved with AVX either downclocked or disabled. That wouldn't give me confidence to recommend Emerald Rapids as the top gaming machine.

That's a lot lower than I was expecting, but it is the 24c and they were maximizing overall clocks. When you're pulling 600W+ there's only so much you're going to get. I'd be curious how high you could get 8c while dumping the clocks on the rest.

 

[bit_user]

That's a lot lower than I was expecting, but it is the 24c and they were maximizing overall clocks. When you're pulling 600W+ there's only so much you're going to get. I'd be curious how high you could get 8c while dumping the clocks on the rest.

Yeah, I did have the thought that perhaps you could squeeze out a couple hundred more MHz, if on a 16c model, like you mentioned. Given the highest they got 2 cores was 5.2 GHz, I think we can safely say dropping to 16 or even 8 cores won't net you too much.

BTW, remember that the version of Golden Cove in Sapphire Rapids is different than the one in Alder Lake. They bolted on an additional AVX-512 FMA unit (labelled FMA EUs on Port 5, below), AMX, the mesh agent, and more L2 cache. It's quite likely that these additions weren't designed to make the same timing targets as the desktop CPUs, because power constraints would make such clockspeeds impractical for large core counts and designing to more lax timing enables more work per pipeline stage per cycle.

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Spoiler: alternative

Source: https://locuza.substack.com/p/die-walkthrough-alder-lake-sp-and​

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[thestryker]

Yeah, I did have the thought that perhaps you could squeeze out a couple hundred more MHz, if on a 16c model, like you mentioned. Given the highest they got 2 cores was 5.2 GHz, I think we can safely say dropping to 16 or even 8 cores won't net you too much.

BTW, remember that the version of Golden Cove in Sapphire Rapids is different than the one in Alder Lake. They bolted on an additional AVX-512 FMA unit (labelled FMA EUs on Port 5, below), AMX, the mesh agent, and more L2 cache. It's quite likely that these additions weren't designed to make the same timing targets as the desktop CPUs, because power constraints would make such clockspeeds impractical for large core counts and designing to more lax timing enables more work per pipeline stage per cycle.

​

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Spoiler: alternative

Source: https://locuza.substack.com/p/die-walkthrough-alder-lake-sp-and​

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Yeah I could see that, and I'm sure there are likely refinements that had been made for RPL which aren't in SPR which will make their way into EMR. They actually had 6 cores with a 52x multiplier and the boost was set to allow up to 8 to get that high.

I will say one thing that has really surprised me with SPR is that the memory controller seems really good as everyone who's tested one with 6800 seems to just get it to work which certainly wasn't the case for ADL.