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  1. R

    vcore limit on 45ns procs, which reading to go off of

    If the motherboard manufacturer follows intel specs, then bios setting vcore = max overshoot volts. And Voffset/drop from bios setting to idle + additional vdroop at load is so that overshoots will go no further than bios setting. For example 1.4 bios, cpuz idles at 1.38, and on load goes to...
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    i7 920 overclock settings

    I went to 4ghz from stock, havent tried below that, but i940 (same settings would apply for i920) For 4ghz (20x200) 12hrs prime stable, QPI 36, uncore 17x, mem8x (uncore has to be at least 2x mem or no post) Vcore 1.356 bios, LLC enabled, qpi/vtt 1.31, DRAM volts 1.64, 8,8,8 24 1600 (stock...
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    Phenom II at 7Ghz

    Could be faked or just be cpuz bug, like this one from spyros that took #1 spot at cpuz site, ie world record for few days. With right hardware/mobo that cpuz does not yet support, or maybe using several different types of ram ....classic. http://valid.canardpc.com/show_oc.php?id=468500
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    Strange Core i7

    If you hit tjmax the cpu will throttle, decrease mhz, but that is not the turbo thermal limit mechanism, that is just thermal throttling. I had posted the intel white paper on turbo in below thread back when beta testing programs as trying to get accurate mhz. But turbo is primarily limited...
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    Strange Core i7

    Gigabyte bios F3 On Ext and UD5 have TDP limit enabled, so in turbo mode you will have a 21 multi (turbo) with 1 or 2 cores heavy loaded or even 4 cores lightly loaded. But prime with more than 3 cores and turbo will disengage and be back to stock multi of 20. On all f4beta and newer bioses...
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    Poor i7 Overclocking - Motherboard problem?

    Gotcha and probably smart until we learn more...I am staying within VID range myself, at max VID value of 1.375vcore (though with LLC enabled), and my QPI/VTT is 1.32 (guess P6 calls it QPI/DRAM), and DRAM volts 1.64. Couple others volts at one notch higher than stock, rest stock. I primed at...
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    Poor i7 Overclocking - Motherboard problem?

    My i940, have about 20 prime runs and some linx, not a single time did I get an error on prime, 70% reboots, 30% freezes if unstable. You may just need more vcore or you may be reaching limit of prime stable bclk. Do you have LLC enabled? (Not just that I cant stand intel babysitting of...
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    Anybody else DISAPPOINTED by i7?

    nehalem is not harder to overclock than penryn, just different rules with small learning curve. My E8400 OCed to 4 with 1.36 vcore bios, 1.33 cpuz. My Core i7 940 OC's to 4 with 4.2 turbo with 1.35 vcore bios, 1.33 idle, 1.31 load, and is prime stable 12 hours. for apps that primarily use...
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    Compare your CPU to a 4Ghz Core i7 965 EE Nehalem!

    4 min 13 seconds, with my i940 using 24/7 setting (9hr prime small ffts stable) 4ghz (w/turbo enabled so 4.2ghz single core tasks) http://img249.imageshack.us/img249/9527/spi16mhw0.jpg
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    Intel's Warranty....

    I was going to post, rather than speculating as to their policy or the lesser legality issue, someone with appropriate contacts should ask a senior person at intel, but looks like we got the answer, and thanks for clearing that up! Looks like Gillbot was correct. Though really if you...
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    Intel's Warranty....

    Youtube video was interesting. An intel representative clearly stating on public video that overclocking does not void your warranty, then using intel software to overclock the front side bus, and claiming they would stand behind you if overclock responsibly, pretty much makes it clear to me...
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    What is the TJ MAX for the Q6600 G0?

    yep...and what is worse, the calibration like intel states vary part to part, so possibly so do the offsets, which is maybe why they were not provided. But since several have tested same cpus and get the same "offsets", you are better using current tjunction than changing. Both real temp and...
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    What is the TJ MAX for the Q6600 G0?

    Intel has stated that most cpus (probably all 65nm) have significantly raised DTS offsets to prevent throttling below tcase, per presentation at IDF, see slides 7 and 13. The chart on slide if drawn to scale could easily represent 15-20C offsets. Intel has stated the formula for...
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    Compare your CPU to a 4Ghz Core i7 965 EE Nehalem!

    http://www.nordichardware.com/news,8195.html as would I, especially if i7 does not overclock well at 24/7 usable voltages
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    Latest Core i7 release date info

    I just wish someone would post/find VID range and max recommended vcore for i7 since new architecture...seems to need ~1.44 to get 4 Ghz.
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    Compare your CPU to a 4Ghz Core i7 965 EE Nehalem!

    My E8400 OCed to 4 ghz and running ram 1:1 9x445 runs superpi 16m in 5 minutes 40 seconds. http://img366.imageshack.us/my...age=superpi16m2dg5.jpg
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    Latest Core i7 release date info

    i7 with OC'ed Bus speed of 190 and 209, so maybe there is a chance at 4.0 Ghz with even the cheapest i7 http://www.xtremesystems.org/f...p=3333514&postcount=21
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    4GHz i7 920

    How do you get exactly 4010 mhz from integers 133 or higher multiplied by integers 20 to 30 (or even with half multi's). I cant get there in excel. Also how did he get 267 stock, is that 133.3?x20, 266 would be 133x20. I can get 4011 using 21x191 (if 133) or 4010.6 using 22x182.3 (if 133.3)...
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    CPU Over Heating

    In temp testing with IR I have run an E6850 and an E8400 for hours without a heatsink. Both shut off around 115-120C or so...which I have tested many times. At load they will shut off pretty quickly, at idle after many minutes if no airflow hitting IHS (or more quickly depending on...
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    What is the TJ MAX for the Q6600 G0?

    There is a relationship between Tcase and tjmax...here is a post I made on xtreme after tjmax on 45nm was released to use that now known relationship of 45nm for 65nm. We know casing temp of Q6600 is 95C when DTS=0 (tjmax reached), so must be 95C or higher. Casing temp on E8400 is 95C when...
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    What is the TJ MAX for the Q6600 G0?

    The most recent version of coretemp and realtemp (newest beta) are both using tjmax 100 for Q6600 GO stepping. http://www.xtremesystems.org/f...3283077&postcount=2269 link to get most recent beta version of realtemp....2.79
  22. R

    Core Temp vs. Chip Temp

    Cpu temp (from diode between cores) and Core temp (diode on die) should read nearly the same at idle, and at load core temp may be ~5c more than cpu temp, depending on the load. But that assumes you have accurate sensors, and the following: 1) For accurate CORE LOAD TEMPS, you use the...
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    Q6600 at 4.3GHz? Is it possible?

    I googled microman (reviewer in newegg) + q6600, ?the same microman in post 3 of link below, cpuz validation under post, looks like benching q6600 4.3 at unknown volts (cpuz vcore sensor set off in ini file) http://www.overclock.net/intel...6600-clock-better.html
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    e8400 cores vary in temp as much as 12C!

    lapping is not going to help, nor is reseating. One of your DTS diodes on core is off, or both are off 5C in opposite directions. You can put your heat sink (and I have) on just half of cpu, and you still can not even create a 2C gradient between two cores. The thermal conductance on die is...
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    Confusion over CPU Temps

    Core temp is from diodes on core. CPU temp is from a diode between the cores. IHS temp or Tcase, there is no sensor. The max difference you will see between core temp and cpu temp is ~5C, because both are on die substrate where thermal conductivity is very high...
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    YOUR safe operating temperature?

    Throttling occurs at DTS=0, so if virtualLarry cpu is 9C delta to tjmax, he is 9C from throttling. He may or may not be exceeding Tcase max, depending on what program he is using to load. cooling used, etc, and no way of anyone knowing for sure. But as StinkyPinky accurately points out, he is...
  27. R

    YOUR safe operating temperature?

    Some E2140's at idle, undervolted have IR reading of 85C suggesting 85tjmax , coretemp may have that one wrong as it uses 100tjmax, so when he is at 9C from tjmax he may be at 76C core temp according to real temp. Though E2140 have two separate Tcase max values, one ~60C one ~70C, depending on...
  28. R

    YOUR safe operating temperature?

    The gradient from core to tcase is dependent on many factors, but intel publishes a tested formula, which they state is very accurate. The gradient from core temp to Tcase (IHS temp) at FULL TDP LOAD is roughly 23C, if all parameters of testing is exactly same as intel including intel stock...
  29. R

    YOUR safe operating temperature?

    There is no specs on core temperature (diodes on cores) for desktop cpus. There is a Tcase max which is the temp at geometric center IHS, and is 72.4C max for E8400. Although no sensor reads Tcase, the cpu temperature (diode between cores read by speedfan, etc) is the closest thing. And if...
  30. R

    whats more accurate, core temp or bios temp?

    When you are in bios, cpu temp (diode between cores of E8400) is under a very small load, and 24C is reasonable given 22C ambient. The "case" temp is either mislabled or GB installed a cpu socket sensor; just out of curiosity does it say "case" temp in bios or system temp (system temp is NB)...
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    Broken Q9450

    First off, I would never use anything but a credit card for an online purchase, for the exact reasons that Idontcare outlined above. Despite buying nearly everything but groceries online, I have only run into one disreputable online dealer, that sold a used, nonfunctional, non OC 8800gtx as a...
  32. R

    Broken Q9450

    From where did you buy it, and how long did you have it before returning it?
  33. R

    Are my overlocked temps safe?

    I have asked intel this exact question for 4th time/try now, and have yet to get an accurate or even pertinate answer, still waiting on answer for 4th try, hopefully will get escalated to get an accurate response. But according to intel data sheets: Core temps are die temps, there are no...
  34. R

    whats more accurate, core temp or bios temp?

    Bios temp is cpu temp, which is the diode between the cores, and if you are at stock settings that is about right at 29C bios (which is a small load), assuming your ambient is average 23-26C range. I have same E8400 and GB P35 DQ6, and bios does good job of calibrating cpu temp, so that is more...
  35. R

    Need Help! e8400 huge variation in core temps!

    The bios is reading the cpu temp (diode between the cores), and that diode is dependent on bios calibration. First try to update your bios to the latest. If that does not help, write your mobo maker and tell them to get in gear and release a bios that supports E8400 with an accurate cpu temp...
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    Help!... 1 Hot Core!

    You clearly have one stuck/bad sensor. If the die attachment was the problem on the one core, then when the other three cores went up 10-12C, the problem core would also go up at least 10-12C (and probably more if the IHS was not properly attached). But since it only goes up 5C, ie starts to...
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    Intel Thermal Throttling - Automatic?

    According to intel, throttling occurs when DTS=0 (tjmax is reached), though software may indicate a few degrees before DTS=0 due to differences in sampling time between software reporting temp and temp being reached. My E8400 throttles at exactly DTS=0 (95C casing temp by Fluke) if DTS is...
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    calculating the "default" tRD

    regarding tRD being fixed....tRD is adjustable on most all boards, though it may be labeled differently than tRD. I can use tRD of 7 (tight as possible) up to about FSB of 480 (ddr2 960 1:1), though I have to increase nb voltage slightly as I increase FSB for stability. Past 480, I have to...
  39. R

    Fake Intel Core2Duo?

    Must be because the other OEM's with that policy actually refund your money when you ship the defective part back.
  40. R

    Fake Intel Core2Duo?

    I think that pretty much hits the nail on the head. What separates the good online stores from the bad, is how they handle problems, and how many and what kind of problems they have. In TD case, in my experience they handle them poorly and dishonestly. And some of the complaints they get...