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  1. J

    Discussion Intel current and future Lakes & Rapids thread

    About as funny as the AMD fanbase accusing a AMD sponsored dev of taking bribes from Intel. If Alder Lake destroys Zen 3 by 40% in a AMD sponsored gaming benchmark, it would be hilarious and I would expect Intel to put it on their presentation.
  2. J

    Discussion Intel current and future Lakes & Rapids thread

    You're assuming throwing more cores at driver submission threads always increases performance. We already see that 16T barely increases performance over 8T. 24 threads trying to queue could very well decrease performance relative to 16T or even 8T.
  3. J

    Discussion Intel current and future Lakes & Rapids thread

    I really have to laugh at these two thinking AotS devs of all people are paid off by Intel. Same versions, High_1440p preset, 12900K still 25-40% ahead depending batch levels. 3.0 vs 3.10, margin of error difference in CPU performance for a 5950X by doubling threads 3.0...
  4. J

    Discussion Intel current and future Lakes & Rapids thread

    Easy. Gear 4 + CR2 which effectively means 1 command every 8 DDR cycles. Like eek2121 says, flipping out over memory latency on a ES 0000 chip is pointless. Rocket Lake 3800CL16 is now hitting AIDA 40ns on Gear 1 after it was doing 50ns on launch firmware, never mind whatever it was hitting...
  5. J

    Discussion i7-11700K preliminary results

    ComputerBase's CPU editor is livid for sure. He made a colorful post on their forum and the summary is he is not pleased about Anandtech deciding to bypass the NDA.
  6. J

    Discussion Intel current and future Lakes & Rapids thread

    Tiger Lake H is going to clock on 5GHz on multiple cores, already confirmed. Rocket Lake will be easier to cool than Comet Lake because the core is 20% bigger at the same max power levels. The up to 19% claim is based on SPEC2017 ST based on their fine print. It is a little wild how the same...
  7. J

    Discussion Intel current and future Lakes & Rapids thread

    Power consumption is what ever is set in the motherboard firmware. Efficiency is great compared to Skylake 11990K 143W for AVX2 FPU stress and 184W for AVX512 FPU stress. 9900K at 181W AVX2 Rocket Lake would have more 256-bit FPU resources so at 143W it would be beating the 181W 9900k in...
  8. J

    Discussion Intel current and future Lakes & Rapids thread

    This thread quality's quality has certainly divebombed after Zen3's core performance lead got threatened by the most recent leaks ;)
  9. J

    Discussion Intel current and future Lakes & Rapids thread

    I don't know where you get your confidence from. https://www.anandtech.com/show/14664/testing-intel-ice-lake-10nm/4 Skylake 8C desktop has 17% higher IPC over Skylake 4C laptop from double the cache and a desktop memory subsystem. This should clue you into the nature of the benchmarks you are...
  10. J

    Discussion Intel current and future Lakes & Rapids thread

    I got a relative to run MLC on a TGL 1135G7 Inspiron laptop he got for school. 30ns HITM i5-1135G7 latency at 4.2GHz My system for reference 22.5ns HITM 9900K at 5GHz/4.7GHz The L2 <-> L2 latency hasn't increased much in relative cycles with the switch to non-inclusive. Other notes: 14.5W...
  11. J

    Discussion Intel current and future Lakes & Rapids thread

    Some Renoir laptops also had blocked bottom intake vents. Really hard to fathom why OEMs are doing this.
  12. J

    Discussion Intel current and future Lakes & Rapids thread

    I swear every time I visit this thread you guys substract a few 100Mhz and % IPC from Rocket Lake. Now it's just a refresh of Skylake? Mebiuw still claims 18% IPC in Spec2017 over Comet Lake. Which makes sense if the core is from Willow Cove bolted onto the Sunny Cove cache configuration.
  13. J

    Discussion Intel current and future Lakes & Rapids thread

    Looks like it's capped at ~3GHz on Kraken and Speedometer. That's a straight up busted power management firmware. No reason why it should be doing worse than Ice Lake. Power numbers in Windows from another reviewer 15W sustained vs 24W for the Ice Lake version is also baffling. The chassis...
  14. J

    Discussion Intel current and future Lakes & Rapids thread

    The issue is the cost of single-thread performance doesn't scale linearly. So given a particular transistor budget, a big array of small cores will beat out a small array big cores in nT tasks... like Cinebench.
  15. J

    Discussion Intel current and future Lakes & Rapids thread

    It has new instructions, CET, and a major high-bandwidth cache redesign. 10SF is a metal stack change if their architecture day graphic is to go by. There are too many metal layers compared to the previously disclosed 10nm. It's practically a new process at that point. Therefore even if the...
  16. J

    Discussion Intel current and future Lakes & Rapids thread

    RKL was obviously a backup plan in the event of an even more delayed 10nm. Now that RKL-U/H seems to be canned in favor of TGL-U/H, it's going to be a limited release to fulfill obligations to desktops and workstations with CML filling in lower tiers. Had 10nm taken 6 months more, I reckon RKL...
  17. J

    Discussion Intel current and future Lakes & Rapids thread

    It's not just yields. A 7nm wafer requires so many more process steps that, to keep a competitive production rate, the capital costs are enormous in addition to higher material costs. TSMC charges over twice per 7nm wafer over their 12nm wafer for example. You even acknowledge it in your own...
  18. J

    Discussion Intel current and future Lakes & Rapids thread

    Your numbers are off. TSMC's Q2 2020 reported $2.8B COGS and $2.5B depreciation on $10.8B of revenue, so equipment depreciation is 23% of their revenue. Intel's ratio is roughly the same at $9.2B COGS+D&A ($5.2B) on $19.7B of revenue. Their depreciation accounting is slightly higher because of...
  19. J

    Discussion Intel current and future Lakes & Rapids thread

    The other issue is their 3rd party analysis of other people's reviews was based on a Tiger Lake laptop that throttles to 17W within 50 seconds of full core load being compared to a 25W PL1 Ice Lake laptop. Can the AVX512 units operate as unfused AVX2 units? Otherwise that seems like a waste of...
  20. J

    AMD Q2 2017 earnings

    He didn't say who was going to be doing the bleeding. ;) Operating income increased 190% YoY, which is pretty bonkers. Looks like the Steam HW Survey was on point after all.
  21. J

    Techpowerup：Intel Says AMD EPYC Processors "Glued-together" in Official Slide Deck

    Now that everyone's done laughing at the glue slides, we finally got some numbers for Epyc. https://www.servethehome.com/amd-epyc-infinity-fabric-latency-ddr4-2400-v-2666-a-snapshot/ But these are not the numbers that will usher in a new era of general purpose MCM CPUs. For comparison, ~140ns...
  22. J

    Intel Skylake / Kaby Lake

    I'm fairly tickled by the fact that the extra L2 and 512b unit was just stapled right onto the base Skylake core. servethehome has a 8180/8176 review up as well: https://www.servethehome.com/quad-intel-xeon-platinum-8180-initial-benchmarks/ Quad socket inter-node latencies are lower than...
  23. J

    Intel Skylake / Kaby Lake

    It's different. Solder is solid and bonds to IHS to the die at operational temperatures. Gallistan-based liquid metal TIM is always liquid unless doing sub-zero cooling, and can outperform solder due to a combination of higher thermal conductivity and thinner TIM possible (since it's liquid)...
  24. J

    Intel Skylake / Kaby Lake

    I'm sure TahoeDust can just fire up some benchmarks, stress tests, and HWinfo, and show us the CPU Performance Limit Reasons read out. If there's throttling invisible to CPU-Z, it should still show up there. He actually owns the platform and has run a lot of benchmarks, unlike the people that...
  25. J

    Intel Skylake / Kaby Lake

    That's from the wall, so ~320W CPU power at 92% PSU efficiency and ~50W of platform power. ~32W/core @ 4.7 GHz sounds in line with Skylake. What's Intel going to say about it? "Overclocking voids warranty and may cause premature failure blah blah blah"
  26. J

    Intel Skylake / Kaby Lake

    You guys need to get your PCs checked for viruses, because the CPU utilization floor for my "little" Haswell 4 core is 5% CPU with the whole thing throttled back to minimum multiplier. That's with 30+ Chrome tabs, Aquasuite running, Logitech nonsense, Steam, and Mumble running.
  27. J

    Intel Skylake / Kaby Lake

    3.2
  28. J

    Intel Skylake / Kaby Lake

    20% lower than expected DX11&DX12 API performance might have something to do with it, no?
  29. J

    Intel Skylake / Kaby Lake

    Mind you that result likely isn't just from cooling 93C to 73C. Tom's Hardware measured the difference in leakage power and it was only 5% between 60C and 100C and very linear. The 90C+ power result that HWUnboxed measured was also thermal throttling, which means 402W wasn't even the ceiling...
  30. J

    Intel Skylake / Kaby Lake

    If the connectors and wires are hot, that means there's power being dissipated over the cable and voltage is dropping across it. If the voltage drop is significant, the VRMs will need to pull more current to sustain its output voltage. So the question now is why is der8auer's cable so hot when...
  31. J

    Intel Skylake / Kaby Lake

    http://www.overclock.net/t/1632870/skylake-x-kaby-lake-x-combined-discussion/200#post_26197736 Just one set of limited results, but the mesh/L3/RAM memory latency impact is huge for Skylake X.
  32. J

    Who's buying Skylake-X? (You may now change your vote)

    By default it measures Hit-modified. -H changes the measurement to clean line hit latency. I could be reading it backwards though.
  33. J

    Who's buying Skylake-X? (You may now change your vote)

    I'm now wondering what exactly PCPer was measuring when they said core to core was 100ns.
  34. J

    Who's buying Skylake-X? (You may now change your vote)

    L3 is a big pool of eviction caches. HW prefetcher fetches straight into L2 now. Can't really compare 1:1
  35. J

    Intel Skylake / Kaby Lake

    Do you have enough gym badges on your case? ;)
  36. J

    Intel Skylake / Kaby Lake

    There are clearly bipolar gaming result reviews that are correlated with memory benchmarks. One camp says it's way slower than 6950X/7700K, the other camp says it's faster than 6950X/7700K or matching it. Of course the reviewers with "fast" 7900X may have an entire batch of slow X99 and Z270...
  37. J

    Who's buying Skylake-X? (You may now change your vote)

    Run MLC, too. https://software.intel.com/en-us/articles/intelr-memory-latency-checker
  38. J

    Who's buying Skylake-X? (You may now change your vote)

    Not Skylake-S, but Haswell(-S?) @ 4.8/4.4... Wow, 76 clocks to L2<->L2. I guess it does have to go up-and-down the L3 at 36 cycles/ea. Command line parameters: --c2c_latency -c0 -w1 Latency = 11.8 core clocks (2.9 ns) Command line parameters: --c2c_latency -c0 -w2 Latency = 75.7 core clocks...
  39. J

    Who's buying Skylake-X? (You may now change your vote)

    Can you also run the memory latency tests with default and OC mesh? *using mlc
  40. J

    Intel Skylake / Kaby Lake

    I bet their firmware kept the mesh speed at 2400. PCGH gaming results are completely different. Guru3D shows a 20ns spread in memory latency between MSI and Asus boards when using the same memory. Guru3D also saw a huge spread in gaming performance between the boards as well.
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