AMD 32 Core vs. Intel 28 Core

Off topic

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Wait what

Wrong buttons
@BookrV make a thread

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Wat u doin bruh?

I open a thread can you push the posts to it?

Yes, that’s what I was trying to do <_<

https://forum.level1techs.com/t/intel-inside-tm-the-pitchfork-torches-edition/128614

Heresy… You have to pick a side and stick with it no matter what… /s

Seriously though. I’m loving all of this. 28 cores @4.5GHz (extrapolating chiller 5GHz performance to delidded water) would be great. 32 cores @ 4GHz would be great. hex channel memory with a channel devoted to NVDIMMs would be great. CEOs who don’t have inappropriate relationships with their employees are also great!

It’s been a rough 10+ years of yawning and finally we get some excitement in the CPU world.

Better question I’ve not heard asked or answered… If the AMD MB/Socket were wired up for 8-channel memory, does the TR package support connection to the dark 4 channels on the odd-nodes?

No coffee yet @kewldude007?

You ain’t gonna get 28 cores @ 4.5 without a lot of fuckin work. The 5GHZ was Cinnebench only, Prime 95 on that chiller probably 4.6GHZ stable and for who knows how long. Maybe you could get it stable for an hour of Prime95… but how much voltage would you have to pump through it? The answer… a lot more then 5GHZ Cinnebench. I’d be surprised if you could keep 28 cores @ 4 GHZ stable for high intensity workloads without serious water cooling and delidding. Not very exciting taking a 10000 to 12000 server chip, stripping a couple of features off and selling it as new desktop component mated to a 1000 dollar motherboard just to play the me too game.

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That’s a big “we’ll see.”

4.5Ghz water and 5.0GHz chilled 7980XE is doable today and frankly not very hard in their respective domains. 4.5Ghz all-core is actually my daily-driver config here @1.175v core voltage (under water - not chilled). I use -5 and -7 offsets for AVX and AVX512.

The larger socket has greater power provision and 7980XE (and the 8180 likely/suspected for that demo) are Skylake silicon. So, better/greater power provision in the socket and better silicon process might make this more viable than you think. (but yes, its still 10 more cores…)

I think you are looking at a 500-600W CPU in a ~250W socket under the best of circumstances. From an overclocker’s perspective 300-400W in a 150-180W socket is not “unreasonable”, but linearly scaling that to 500-600W definitely brings this into new/concerning territory. x299 has been more limited by VRM cooling than the socket/pin melting even in the 400-500W range (none of which I’ve actually seen - only worried about).

p.s. none of that means I am not very seriously considering a 32 core TR regardless of what Intel brings out. Waiting to see some hard numbers. 32 cores at 4.0GHz with reasonable cooling is very attractive relative to 28 cores at 4.5 with much more exotic cooling.

It took Intel running a chiller to get the 28 core at 5GHZ for Cinnebench, which with more tinkering you might have gotten some Prime 95 but obviously didn’t want to push it with Prime 95 otherwise they would have made it part of their presentation.

I think the scaling is going to bite Intel in the ass with this one. Your 7980 is 10 cores less, can’t really compare that to this 28 core part. To increase power necessary to run those extra 10 cores at a high clock while dissipating the heat is a tough ask. Physics is a bitch.

I suspect 32 core will probably come down to silicon lottery at about 3.8 and above with good cooling. But 32 cores @ 3.8 is pretty fuckin awesome considering the fact that kind of performance costs will be very reasonable versus a 28 core behemoth that requires exotic cooling to get close to its performance potential (and 850 to 1000 motherboard).

This is why the Intel part doesn’t excite me… because its bullshit. They started off the presentation with bullshit, showed bullshit then after said oh our presenter forgot to mention it was overclocked. Seriously… a presenter for Intel is going to go off script and “forget” its overclocked. Again, more bulshit. Meanwhile AMD is like ok… here is 32 cores, here is the air cooler, and we’ll take orders in August. Much different presentation, one in reality… other not so much.

No way. Prime would smoke that chip on 5GHz.

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Yes, I get that… which is why I said 4.6GHZ in previous post.

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Counting on it - see larger socket and improved si in my assumptions. There’s a fair amount of “back-of-envelope” in my assertions, but there is also a deep familiarity OCing lots of HW (X and Xeon), Broadwell and SKylake chips. 5.0GHz at the core level isn’t much of a stretch. For SKL-X/P that tended to require ~1.35v. The real issue was not the cores, but the overall package power delivery.

4.5GHz is even more of a yawn at the core level <1.20v

Ah, ok. Sorry.

Honestly, any AVX beyond 4.0GHz at that scale is a good way to build a heating element from a CPU.

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OK, so if its not a stretch why run it on a chiller? You keep saying its not a problem, not a stretch but they ran in on a chiller with ozone killing refrigerant. Larger package is only going to get so far. They bullshitted this presentation as a 28 core, 5GHZ part… it ain’t a fuckin 5GHZ part, with special cooling and delidding it’ll probably plop down at 4.5 to 4.7(higher if you win the silicon lottery) under real workloads, “regular cooling” maybe 4.2 with a silicon lottery win.

To make these chips look better they may bin the living shit out of them… which would certainly help the consumer. I guess if you are going to spend what will probably be 4 to 6000k for the chip, 850 to 1000 motherboard then the cooling solution which probably will require a minimum 250 dollar investment you should get the best of the best. Again this is why this part doesn’t excite me, its past the bleeding edge of technology.

  1. WRT my statements, keep 4.5 and 5.0GHz in perspective and separate - they are two very different thresholds for anything SKYLX to be sure… 4.4-4.5 is the “knee in the curve” so going beyond is steep exponential in voltage and thus power. I expect the improved silicon to have a little more head-room/efficiency.

  2. THEY used a chiller to hit 5.0GHz just I would to get my 7980XE to do the same. Without it even 4.7 all-core is well into the high 80C range on water. I need a chiller to hit 5.0GHz all-core on a 7980XE.

  3. I am not trying to justify their demo/deception. It frankly showed me nothing I couldn’t already work out on the backs of those envelopes from what I’ve seen. God-mode silicon binning (golden chip) SKL has no trouble running 5.0GHz on many/all cores. If you can give it power and keep it cool (see chiller), the chip and the socket looked like it could sustain those powers. Their demo was BS. No excuses for what they did there. It was designed to deceive… it deceived…

My point was that it was not as far away from what could be delivered to the HEDT as some have made it sound if you set a more “realistic” goal of ~4.5GHz OC rather than 5.0GHz. (non-AVX)

As per my prior post - AMD’s power consumption and compute power at ~4.0GHz (more cores) is a compelling argument against Intel chips that potentially exceed the AMD chips in head-line benchmarks but at 50-100% more wattage (with corresponding de-lid and cooling issues). There too from TR1, 4.0GHz may require binning and or custom-loop water, but should be achievable given what we’ve seen from the 2xxxx series so far.

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