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X99 Adaptive Voltage |
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coccosoids 
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 Topic: X99 Adaptive VoltagePosted: 14 May 2017 at 10:56pm |
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User of X99 Taichi from Asrock.
I will say straight up that the bios in this Asrock board has very poor usability for me, which I would not have expected if you consider how beautiful this board is on the outside. So given that - are there any guides on how to configure adaptive voltage / offsets in the Taichi bios? Can anyone share a basic step by step guide? |
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wardog
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Posted: 15 May 2017 at 1:14am |
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parsec has an X99. It's Mothers Day here so he may or may not log on today.
I seem to remember him typing this out before. Try a Search of the forum. |
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coccosoids
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Posted: 15 May 2017 at 5:31am |
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I'll probably ask him privately if he would care to answer, but I will not do so until his holiday is over.
Thank you though. To whom it may concern: on a 5960x at 1.24v, 4400Mhz with fans at 40% the idle temperature sits at ~46 degrees. Package. I would very much try to lower it at 30 something if at all possible. Many thanks. Edited by coccosoids - 15 May 2017 at 5:31am |
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wardog
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Posted: 15 May 2017 at 10:03am |
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Meh, please don't PM us. The info you seek should be public for all to read.
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coccosoids
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Posted: 15 May 2017 at 8:26pm |
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Should be, but it isn't. Asrock should at least explain what the settings do in their manual. |
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parsec
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Posted: 15 May 2017 at 11:52pm |
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Before you criticize ASRock for (apparently) not providing a beginners guide for configuring the VCore voltage options, consider this: Does Intel, the designer and manufacture of the processor, and creator of the modes/methods of controlling the voltages applied to the processor, provide a guide or instructions about doing that? The answer is, no they don't. You have brought up a point that has been lost to me after all the years I've been building PCs. It's something I have just accepted as the norm, the simple reality of the situation that is accepted by PC builders. While Intel and AMD design the methods that processor voltages are controlled in the UEFI/BIOS, and mother board manufactures simply implement them from information provided to them from the processor manufactures, where and how is the information about using the methods provided to PC builders? The main source of that information is literally created by the PC builders themselves, from experimentation and their experience with other PCs they've used in the past. I cannot point you to a single guide provided by Intel that would answer your questions. That applies to any Intel processor generation. Why that is true, and accepted by PC builders, is a mystery. The ultimate irony of this situation is the Intel design document for the processor voltage regulator design that is issued for one or more related processor generations, is a proprietary document that is not released to the public. Mother board manufactures must sign a non-disclosure agreement that they will not provide that document to the public. Regardless, the majority of its contents would be beyond the understanding of most people. The guides created by PC builders, and occasionally by someone related to a mother board manufacture, are really about how to over clock a processor. They also are not written as a basic guide about what each option does and how it works. Please understand that "explaining what the settings do" in any meaningful way would make the manual three times the size it is now. I certainly agree that the manuals provided by any mother board manufacture do not provide detailed explanations of each option. That is yet another norm that has been that way as long as I've been building PCs. New PC builders tend to put the responsibility of their education onto the mother board manufacture. While that may seem reasonable, the mother board is only one part of many that makes up a PC. Why doesn't Intel and AMD provide a manual with their processors describing how to configure processor voltages and option settings? Why don't we as customers expect or require that from them? End of my editorial, I'll address your question next. |
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parsec
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Posted: 16 May 2017 at 12:21pm |
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It seems you know what you are doing more so than your first post implies. That's a great OC at a low voltage for an i7-5960X, almost 1GHz above the stock Turbo speed of 3.5GHz. What voltage mode are you using now? Fixed at 1.24V? Your board's UEFI has Auto/Adaptive, Fixed and Offset for VCore options, correct? Adaptive is Intel's automatically controlled VCore mode. The processor selects the voltage it "decides" it needs, based upon its VID table and other logic programmed into the processor. The UEFI itself has a pre-programmed base Adaptive voltage, liberally chosen to allow for the "silicon lottery" affect, the difference in a processor's ability to over clock, since they are not all the same in that regard. Adaptive mode will result in the highest VCore values occurring of any mode, particularly during CPU stress testing and when AVX2 instructions are executed during a stress test. Regardless of the VCore value chosen with Adaptive mode, that VCore value will NOT be the maximum applied to the processor. If you've tried using Adaptive, you must have seen the VCore exceed the VCore value you entered, or if using Auto, the VCore will be quite high under higher CPU load circumstances. That is completely normal for Adaptive mode, and out of our control. Adaptive voltage mode cannot be configured much at all by the user, and is generally dismissed for use when over clocking, due to the high VCore values it will produce, which are usually not necessary. The use of CPU power saving options like SpeedStep and C States cause changes in the VCore value under processor low load and idle conditions. Adaptive voltage lends itself more to saving power under low CPU load conditions. All Intel i7-5000 series HEDT CPUs are Haswell architecture processors, which have the VCore voltage regulators as part of the processor itself. The board's CPU VRM stage simply supplies the voltage and current the processor requests, and does not itself set the VCore value. The UEFI can control what the internal voltage regulators produce using Fixed and Offset voltage modes. Your second question is about reducing your current idle CPU temperature of ~46簞 C. Now our questions begin, sorry to say, since you've given us no details about your PC. What CPU cooler are you using? What PC case model are you using, and what is the case fans number and configuration? What VCore mode are you using now? Do you have SpeedStep and C States enabled or disabled? What Windows Power Plan do you use? What program(s) do you use to monitor CPU/core temperatures? What model of video card do you use? Important only because of the way it exhausts it heat. A very general, basic description of your usage of the PC might help. Do you prefer not to use CPU power saving options, and have the processor operating at 4.4GHz constantly? |
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coccosoids
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Posted: 16 May 2017 at 5:25pm |
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A very-very big thank you, parsec! Below a few more details on my build... Setup: Fractal Define S / 1 case fan as rear exhaust EKWB S360 water cooling starter kit / 360 rad with 3 fans in pull config mounted in front (fans pull air inside case) 1x 1070 FE blower (blows air out the back) 5960x / 44x core ratio / 39x cache ratio / BCLK 100 VCCIN fixed 1.85v (this is CPU Input Voltage on my Taichi board) Core voltage override 1.24v Cache voltage override 1.175 - 1.2v (still experimenting with this settings) System Agent offset +0.3v - +0.35v (pretty sure this is VCCSA on most other boards) for a value of ~1.2v CPU IO auto (this should be VCCIO I believe, but again a bit confusing, would like to know) LLC Level 3 Turboboost enabled Speedstep disabled C states disabled DRAM voltage 1.36v DRAM clock 3000 Most other settings at default. My idle temps are also a bit high because the fans on the rad are pretty loud and I have them at 40% or something before the temp sensors hit 50C. In stress testing temps don't usually go above 70, 74C maybe, with room temps at about 24C. (another thing I find confusing on this board in particular (X99 Taichi) is that for the water pump the settings are not straight forward in Fan-tastic Tuning - but I will tackle that later with pump speed etc) Almost forgot to mention: the VRM gets extremely hot during stress testing - how normal is this and is there a temp sensor for that that I can check? I cannot even touch it for more than an instant (it's burning basically). What I would like to do now: come up with some guidelines on how to correctly AND safely configure offset voltages in the Asrock uefi- in tandem with EIST and C states (if needed) as some of them are turned off automatically once you change cpu settings. Currently benching with high performance power plan on, this build will be used as a workstation for a while, with some gpu / cpu rendering - but still building on that. No preference on power savings per se, other than maybe have idle voltages drop a little for ambiance reasons (noise, and secondly: room temps). Edited by coccosoids - 16 May 2017 at 5:41pm |
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coccosoids
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Posted: 17 May 2017 at 10:26pm |
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wardog
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Posted: 18 May 2017 at 5:12am |
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First thing you need to do is place a fan blowing over the VRMs ! Since you're using water cooling, any airflow that would have blown over the VRMs from a std HS/F is no more. When water cooling it is a MUST that airflow over the VRMs be supplied by an aux fan. Without an aux fan the VRMs will get scalding hot! |
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wardog wrote: