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  1. 64 core EPYC Rome （Zen2）Architecture Overview？

    Are you sure 800mm^2 is the limit? https://www.anandtech.com/show/9390/the-amd-radeon-r9-fury-x-review/3

  2. Ryzen: Strictly technical

    The interesting question becomes what the IPC of Zen 2 will be. AMD claimed that they had major changes that they could utilize to improve Zen 2, perhaps in time to oppose an Intel 10nm Skylake shrink. I'd be very interested to see everyone's thoughts on the type of IPC that we might see...

  3. Ryzen: Strictly technical

    6 cores per CCX? So does that mean the follow on has 12 cores? Then 24 for Threadripper 2 and 48 for Epyc 2? I am wondering too about the clockspeeds on 7nm: https://www.globalfoundries.com/sites/default/files/product-briefs/7lp-product-brief.pdf Considering the source is Global Foundries...

  4. Ryzen: Strictly technical

    I meant when you run RAM in 2T, there is a performance penalty. OFten though, 2T means you can get faster clocks or tighter timings. The question is if the extra clocks/tight timings outweighs the 2T penalty. But if it is looking like 2T is a liability rather than an asset, then it is 1T all...

  5. Ryzen: Strictly technical

    Just wondering, with the new AGESA 1.006, has anyone tried 2T versus 1T RAM? Was the extra tight timings/RAM speed on 2T worth the penalty?

  6. Ryzen: Strictly technical

    Just a head's up everyone, it may be worth upgrading to Kernel 4.10 or newer for testing. https://www.phoronix.com/scan.php?page=news_item&px=AMD-Ryzen-Newer-Kernel Anyways, you can use the Ubuntu Kernel Updater (works with Mint too as Mint is based on Ubuntu)...

  7. Future to Bulldozer architecture?

    I think AMD is done with Bulldozer. Zen derivatives will dominate ... .and force Intel to compete at all segments.

  8. Ryzen: Strictly technical

    Here are the Tweets: https://twitter.com/CPCHardware/status/843099198799187968 Il y a bien des Ryzen 16C/32T axés HEDT prévus sur X399 dans 4/6 mois. Clocks ~2.4/2.8G. 2 dies MCM. 4 chan DDR4. Socket LGA SP3r2. ~150W. 16 core is 150W, not 180W...

  9. Ryzen: Strictly technical

    https://twitter.com/CPCHardware/status/844618089618722816 Canard PC says 3.1 GHz base, 3.6 GHz turbo, 180W TDP. That's not far from 3.2 GHz - only 100 MHz for the QS. Engineering samples are often a bit slower.

  10. Ryzen: Strictly technical

    Thinking about your power consumption figures, do you think that the 32 core could run 180W at around 3.2 or 3.3 GHz? Ryzen seems to be uber efficient at the optimal clocks. Also, check this out: https://videocardz.com/67594/rumor-amd-x390-and-x399-chipsets-diagrams-leaked Cross posted from...

  11. Ryzen: Strictly technical

    Has anyone tried ECC on Ryzen? Asrock's boards should support X370. No idea about the other vendors. AIDA64 wasn't giving correct numbers for L2 and L3, I know, but they said that L1 and RAM were ok. From what I understood, it was to be incorporated into the next version of AIDA64? Do you...

  12. Ryzen: Strictly technical

    True, but the data was from Hardware.fr, which is a pretty solid source. In any event, the memory latency numbers, while an interpretation might be incorrect, the numbers themselves are not going to change.

  13. Ryzen: Strictly technical

    I might have an answer for you. Memory latency is 98 ns on Ryzen. https://www.techpowerup.com/231268/amds-ryzen-cache-analyzed-improvements-improveable-ccx-compromises Let's think about this. We get about 45ns or so within cores. We get 98ns or so within RAM. 45 ns (from within the...

  14. Ryzen: Strictly technical

    On the X399 report. this was just Tweeted: https://twitter.com/CPCHardware/status/843099198799187968 Canard PC maintains CPU-Z, so I'm thinking this rumor is legit.

  15. Ryzen: Strictly technical

    Yeah that would be good. The SMT performance drops we are seeing would disappear if that were to happen. I'm thinking: L4 cache If they could get the clocks up to 14LPU, we're looking at a few hundred more MHz - very good if they want to go head to head with Skylake E (out in a few...

  16. Ryzen: Strictly technical

    Quick questions UCLK memory controller DFICLK and FCLK - both are data fabric clocks? What is the difference? Then the GMI is 4x the FCLK and NOT the DFICLK? These 3 (UCLK, DFICLK, and FCLK) run at 50% of MEMCLK (RAM speed)l, although UCLK can be modified to run at 100%.

  17. Ryzen: Strictly technical

    Head's up AIDA 64 will need an update: https://twitter.com/AIDA64_Official/status/837309068037488641 L2 and L3 cache speeds are not accurate. They will have a beta soon. I wonder what other software that we use for benchmarking might be giving us inaccurate results due to Ryzen's topology?

  18. Ryzen: Strictly technical

    Will contact G.Skill about this one. Still, even with PCIe 2.0 it's not a huge limitation for GPUs and gaming. The big problem is for people who want to run a PCIe SSD like the SSD 750 and get fast RAM at the same time, if what you are saying is true.

  19. Ryzen: Strictly technical

    Can you elaborate on that? Are you saying that Buildzoid (the author of the video previously linked is wrong)? Right now there are a few kits coming out. An example - G.Skill is releasing a 3466 MT/s kit soon...

  20. Ryzen: Strictly technical

    See here for the 960 Evo: http://www.thessdreview.com/featured/samsung-960-evo-m-2-nvme-ssd-review-250gb1tb/3/

  21. Ryzen: Strictly technical

    Turns out the base clock generator will allow for higher RAM overclocks right now. The way AMD has their BIOS set up, you cannot yet change the memory timings. The high multipliers have very loose timings. The base clock generator allows for higher timings by isolating the Base Clock of the RAM...

  22. Ryzen: Strictly technical

    Yeah that's pretty much what I expected. That said, the Asrock seems like a decent board, at least once the BIOS matures. Oh, and VRM is total overkill. 12 + 4 phase of 40A TI NextFET Mosfets and 60A chokes. Granted without OC headroom that doesn't matter. Could be that the Linux Kernel is...

  23. Ryzen: Strictly technical

    That's basically what I meant - unlike say, Skylake, where the CPU core and uncore are split, on Ryzen it's all the same clocks. That makes sense. Has anyone seen these Asrock boards? http://www.asrock.com/MB/AMD/Fatal1ty X370 Professional Gaming/index.asp They claim a 130 MHz base clock...

  24. Ryzen: Strictly technical

    Thanks that makes a lot more sense. So: Data fabric at 50% of RAM speed Uncore is tied to core speed Base clock (or Refclock) is tied to PCIe , and can only go to about 105 MHz at 3.0, but then has to go to 2.0 Hmm ... that makes me wonder about the data fabric speed.

  25. Ryzen: Strictly technical

    So basically what you are saying is that overclocks cause it to fall into Gen 2 or Gen 1 automatically? Also, why is the Uncore different? I thought the Uncore was at the same speed as the Core itself? From what I understand, cache speed operates at the highest core speed. So in this case, the...

  26. Ryzen: Strictly technical

    Can you verify this? This OC exists with on an Closed Loop Cooler: http://valid.x86.fr/qmfrkd Note the base clock and multiplier.

  27. Ryzen: Strictly technical

    I guess at this point we'll just have to wait for more applications to be optimized for this unique topology. The lesson is the minimize the communication between the 2 CCX as much as possible. We may have gains that use fewer than 4 cores just use 1 CCX, while the rest of the operating...

  28. Hard Drive that keeps going

    It depends on how you use them. With read intensive stuff, they tend to last. I have a few older Hitachi Ultrastars that I've used like crazy in write intensive work that are still going.

  29. GTX 1080 Overclocking

    I'm actually wondering if we will have a situation like Fermi, where on the GTX 570, the VRMs on the reference board were known to blow. Perhaps the maximum current on the Mosfets is why they limited the power draw? For anyone interested, the EVGA GTX 1080 Classified: Unlike the Founder's...

  30. Overclocking CPU/GPU/Memory Stability Testing Guidelines

    Thanks Idontcare. There don't need to be many changes I think. For Intel Burn Test All RAM, for x number of hours (versus x number of cycles). As indicated, there are large kits now available (G.Skill and I think Corsair now offer 8x 16GB kits), for Haswell-E. Maybe 2 hours? For...

  31. Overclocking CPU/GPU/Memory Stability Testing Guidelines

    @Idontcare A few questions: What are your thoughts about AIDA64? I believe Intel recommends it. On a separate note, for Intel Burn Test, would you recommend maximum for lots of RAM? Say someone had 64 GB of RAM or even 128 GB (apparently some of...

  32. X99 boards - are they flaky?

    I consider it unlikely on air or water that a Gigabyte SOC Force or an MSI XPower will clock a bit less than a RVE. The bigger issue is more likely to be the silicon lottery. I haven't really decided which board I'm planning to get (still waiting for DDR4 prices to drop and for the BIOSes to...

  33. X99 boards - are they flaky?

    The problem I have with Asus is that their RMA and tech support are pretty awful. There are much more horror stories on the Internet. A high end Gigabyte, MSI, or Asrock board will probably be comparable in terms of reliability. Get something like the X99 SOC Force, X99 XPower, or X99 OC...

  34. How to identify lapped CPU's?

    Underside might not be reliable. It's possible for example that 2500k could be sold as a 2600k. Worse, it may even be a lower end locked version. I guess the answer is that underside is only reliable for telling the generation of CPU. The only real way is to risk it I fear if you are a buyer...

  35. GTX 980 overclocked to 2.1Ghz - K|NGP|N (Techpowerup)

    Companies will do whatever they can to sell. AMD did they same thing right before Bulldozer came out in 2011. End result? Totally power inefficient. Nvidia's problem is the exact opposite right now. They've got a very power efficient chip, good performance per mm^2, but they've voltage locked...

  36. GTX 980 overclocked to 2.1Ghz - K|NGP|N (Techpowerup)

    +1 Nvidia through it's Project Greenlight has been selling voltage-locked cards. It's insulting to us that we cannot get 1.3V+ on the current chips officially. Sometimes there are BIOSes that leak and stuff, but it's something that at heart, it's a very anti-consumer kind of thing to do. I...

  37. (WCCF) Nvidia ‘Big Daddy’ Maxwell GM200 GPU Alleged Specs Leaked

    I get the feeling we are going to see anything of consequence until at least next year. Hopefully they have something decent or the Nvidia GPUs are going to cost a lot.

  38. Rampage V Extreme vs X99 Deluxe...

    To be honest, I'd recommend considering other vendors. Gigabyte's X99 SOC Force is a good buy at $350. For a few more features, there's the MSI X99S X-Power, at $400, which is very OC oriented and all of the useful features on the RVE, save 3x3 Wi-Fi. Asrock's X99 OC Formula is another option.

  39. (WCCF) Nvidia ‘Big Daddy’ Maxwell GM200 GPU Alleged Specs Leaked

    I know. We could be stuck on 28nm for a while it is looking like. The other issue is that price per transistor is no longer going down. It's going up. 28nm is looking like the cheapest process. The problem is of course, to add more cores for a bigger die needs more transistors ... something...

  40. (WCCF) Nvidia ‘Big Daddy’ Maxwell GM200 GPU Alleged Specs Leaked

    Realistically, the GM200 may be perhaps as little as 30% faster than GM204, perhaps even less. Two exceptions. First, it`s technically possible for a >600mm^2 die to come out. Anyone know what the reticule size is? Perhaps as a process matures, maybe a larger die will be practical? Second...
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