coercitiv
Diamond Member
- Jan 24, 2014
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An this is how fun post becomes market reality post overnight.5*28=4.375*32
With the above magical number in mind... clock for clock comparison between 2700X and 7820X.
Fun times ahead.
An this is how fun post becomes market reality post overnight.5*28=4.375*32
With the above magical number in mind... clock for clock comparison between 2700X and 7820X.
Fun times ahead.
Never underestimate people that would strap cascade phase change cooling to it.That's ridiculous. It is ridiculous, right?
The 28 core at least is almost certainly Skylake-SP XCC die and not Cascade Lake.
I don't think you understand what I'm saying. Intel chips are very efficient if you run them at stock speeds. It is when enthusiasts start pushing the limits on overclocking and then stress-testing with AVX P95, all in the name of stability that the efficiency goes out the window. Even so, that power consumption during AVX stress testing is only half the story. The other half is how much AVX code the cpu is crunching but you will never hear that. As for it not being "a feat of engineering," show me any other arch/chip that has managed to push 28 cores at 5GHz on chilled water. I'm waiting.You don't need to use stress-test apps to justify high power draw while utilizing AVX on these CPUs. Just run a couple of simultaneous x265 transcodes and you'll get similar power draw as any other stress-testing application. Far more realistic use-case and will quickly identify stable overclocks within a few minutes instead of hours.
There is a reason why they used Cinebench and exotic cooling. (Probably) Hiring a pro overclocker behind the scenes to keep tabs while the benchmark is running does not make this a feat of engineering.
Every chip when running outside spec would lose efficiency. You seem to be of the inclination that only something like P95 is what AVX is used for. Like I said, a 4K x265 transcode makes thorough utilization of AVX while being a real-world use case and under such loads you can approach power consumption levels that you usually get with P95 or Linpack. There is a reason why AVX-specific turbo ratios are a thing. Either way, this 28C CPU at 5GHz will draw excess of 1KW when subject to such kind of loads, which is why Intel probably showed us only Cinebench because on this CPU it will finish the render in a few seconds before hitting the thermal throttle threshold.I don't think you understand what I'm saying. Intel chips are very efficient if you run them at stock speeds. It is when enthusiasts start pushing the limits on overclocking and then stress-testing with AVX P95, all in the name of stability that the efficiency goes out the window. Even so, that power consumption during AVX stress testing is only half the story. The other half is how much AVX code the cpu is crunching but you will never hear that. As for it not being "a feat of engineering," show me any other arch/chip that has managed to push 28 cores at 5GHz on chilled water. I'm waiting.
Why could it not be Cascade Lake XCC?
We were originally going to witness the demo first hand, but there wasn't enough power handy to run both the chiller and the system simultaneously.
Actually you break 400W on even the 7900X if you try to push it past 4.7 GHz28 vCore power phases
4x 8-pin CPU power
1kg+ VRM cooler with 4x fans
1000W+ water chiller
Custom water cooling loop with insulation due to sub-ambient temps (delay/prevent condensation)
We were looking at 400W+ to hit 5GHz on 18 core parts, so 5GHz on a 28 core part could easily be north of 600W for the CPU alone.
You would trip a breaker if you tried to run this setup in a US home due to the 1kW+ water chiller (120V AC, 15-20A per breaker).
Why didn't they just overclock it on LN2?32 power phases
4x 8-pin CPU power
1kg+ VRM cooler with 4x fans
1000W+ water chiller
Custom water cooling loop with insulation due to sub-ambient temps (delay/prevent condensation)
We were looking at 400W+ to hit 5GHz on 18 core parts, so 5GHz on a 28 core part could easily be north of 600W for the CPU alone.
You would trip a breaker if you tried to run this setup in a US home due to the 1kW+ water chiller (120V AC, 15-20A per breaker).
Edit: Updated with correct (even higher #) of power phases.
Because chilled water was adequate for 5GHz?Why didn't they just overclock it on LN2?
So Intel swiftly came in this morning and removed the 28 core CPUs from both ASUS and GIGABYTE's systems. It sounded like they gave the companies 20 minutes to hand over the parts
It looked like a lot more effort and power needed for chilled water to me...Because chilled water was adequate for 5GHz?
To see the horror unfolding.Someone woke the sleeping giant...
https://wccftech.com/intel-28-core-x-hedt-cpu-8th-gen-8-core-updates-2018/
"The 28 cores and 56 threads for consumers and enthusiasts would be unlike anything that has been done on the HEDT platform before. In Cinebench, the chip was shown running at 5.00 GHz across all cores (2.70 GHz base) and scored 7334 multi-core points. In comparison, an overclocked Core i9-7980XE with 18 cores and 36 threads scores around 5000 points so that is a mighty jump."
"
Is that a liquid chiller like used for aquariums?
They did say that they would also have an update to their S processor line later this yearI'd rather they showed off the 8 core 8700K successor...
