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Everything posted by M_M

  1. Try some other memory, only one stick in the orange slot closer to the edge of the board... you might also try removing the CPU from the socket and putting it back. Life is wierd...
  2. M_M

    Memory problem

    Even hours of passing In-built Memtest is not good enough to say that your memory is 100% OK. Memtest is just a first line of check if your memory is OK or is it maybe unreliable because of overclocking/timing issues. Try overnight test with goldmemory, so you can be at least 99.9% sure you are not having a memory problem. Once you are sure of that you could start looking into other potential issues, like chipset drivers, bios settings, etc..
  3. PSU's are getting weaker over time because of electrolytic capacitor aging. When used over extended period (1+ years) as well as 24/7 PSU will start loosing its initial wattage (25-30% for 24/7 and 1+ years)!!! Anyway, check this site, I am sure you will find it usefull... http://www.extreme.outervision.com/psucalculator.jsp
  4. M_M

    Memory problem

    It could be a sign, but it could be some bug in the Sandra as well... Are you experiancing any other unexpected program or OS crashes? If yes, I would recommend checking the overall system stability with for example OCCT, or Prime95. If you are suspecting a memory problem, use HCI memory test (http://hcidesign.com/memtest/) or GoldMemory (http://www.goldmemory.cz/).
  5. I would then understand this spec as the allowed max case CPU temperature by which the CPU still should function properly. That would make sense. My next guess would then be that the AMD when specifying it might be putting the CPU's into "oven", slowly increasing the ambient temperature (and possibly CPU frequency) and running some low-level CPU diagnostic SW, and then based on the results, AMD would grade the CPUs. Does anyone have some insider info on how actually AMD (or even Intel) is grading the CPUs regarging their speeds?
  6. I agree that CPU temperature depends on how good the IHS is attached, but CPU consumption should not be affected by this, right? But, as you suggested, there might be something in different max t case specs, which vary from the particular CPU to CPU (all same type and stepping). How are they (AMD?) detemining this? What it actually means? Is it better (for OC) this spec to be lower or higher?
  7. I prefer 120mm as well (having 4 of them in total in my case, all between 1000-1200rpm under normal load), but when modding the inside the case it's usually easier to fit a 80 or 92mm fan (speeds up to 1600rpm for low noise). BTW, one question for community: Are there slight variations in the power consumption beween "same" CPUs on same frequencies and under same voltage (on same motherboard) and under same application load (for example Prime95)? There shouldn't be, right? I somehow I have a feeling that some CPU, just different steppings (or production date), generate slightly more or slightly less heat then others... Just wondering have someone else got the same feeling? I have this hunch based on the temperature reading of CPU & PWMIC, measured with two different X2-4400 CPU's (steppings 0525UPMW and 0534VPMW, both E6 cores), everything exactly the same (including the application load), and the temperatures (both CPU and PWMIC) are consistently 2-3C lower with one then with another? Just wondering could this be some measurement or sensors fault, or have someone else spotted this as well? I know, that ultimately I would have to measure the how many amps actually goes into the CPU itself but I don't have the equipment to do so. Maybe someone did this aleady?
  8. Overclocking X2 or Opteron DC with 1.5V+ and 2.8GHz+ with (almost) no airflow over mosfet area will lead to 80+ degrees celsius reading on PWMIC under full load on both cores. I have a X2-4400, and when I OC to 2.7GHz @ 1.5V, with decent airflow over mosfet area generated by 60CFM 120mm fan on SI-120, I still get 65C reading under high load. When I had A64-3700+, OCed to same 2.7GHz @ 1.5V, I had PMWIC reading around 55C under high load (in both cases case temp is around 33-35C). This is because dual core CPUs are using more power, which is comming to the CPU through mosfets. Note, at 2.9GHz @ 1.55V, your Opteron165 will use up to 110W*(1.55/1.30)^2*(2.9/2.4)=190W of power!!! (assuming that DC cpus have TDP=110W @ 2.4GHz @ 1.3V) My advice, if your intention is to keep the CPU at 2.9GHz, is to mount some quiet 80 or 92mm fan to blow into the mosfets, trying to keep PWMIC temp reading below 70C.
  9. In theory, it should work. In practice, you might have to have lot of skill and some luck as well... If you are really, really lucky, you might even get them to work with CPC=1T.
  10. M_M

    Ram Issues

    2.8V should be safe for all memory modules, so try it, and if there are some benefits, keep it that way, otherwise use default voltage. If you have problems in dual channel, try testing each memory stick on its own. GoldMem seems like a good memory diagnostic tool. Try relaxing some memory parameters if one of them start throwing errors. If none of the modules proves faulty, then try some other modules anyway or try your CPU somewhere else - with A64 CPUs, memory controller is integrated in the CPU itself.
  11. If you can, try longer CMOS reset, for a couple of hours (while having the battery removed). Next thing to suspect is the CPU, as four LED means CPU not recognized or faulty. So try some other CPU in your rig, or your CPU somewhere else. If it is not the CPU, then must be your motherboard. LOL.
  12. One IMPORTANT thing is that you can still overclock the CPU while keeping the memory close to the default clock (or some other sweet spot) using memory dividers (180, 166, 150, 133...). Performance impact in real-life applications is much more significant when increasing the CPU clock then when increasing memory clock. So, just buy, OC and enjoy.
  13. X2-4400, X2-4800, FX-60 and Opterons 165, 170 and 175 all have the same core, Toledo, stepping E6. I would suggest X2-4400 ADV4400 (TDP=89W) if can be found at all. Otherwise, just grab a Opteron 165 and enjoy... For everyday, stock cooler (box) should perform well up to 2.4GHz on default voltage (1.3-1.35V). For anything more then that , for air cooling I would suggest Thermalright SI-120 (+ Panaflo 120x38mm) or Arctic Cooling Freezer 64 pro. For memory go for 2x1GB OCZ EB PC4000
  14. If taken when idle, they are slightly higher then expected, but nothing to really worry about. Maybe your case ventilation is poor (try to sleeve the cables, check that rear and top fan are blowing the hot air out and front fans are blowing the air into the case), or your ambient temperature is a bit higher then usual?
  15. Absolutely OK. Have in mind that during the summer these temperatures might get higher... If the CPU temp start going above some 56-57C under the load, lower the CPU clock and decrease the Vcore a little bit, just to be on the safe side...
  16. I've let it go up to 71-72C and haven't seen any problems, but I wouldn't dare to leave it like this for everyday, specially having in mind that during the summer all the temperatures will go up by at least 5-7C, maybe even more. Since having [email protected] is quite decent everyday speed for now, and the PC itself is very, very quiet (CPU fan 19dB, intake 19dB, exaust 21dB), I would rather not add additional fan and noise into it... Maybe someday (soon?)...
  17. Try Antec True Power II 550W, 21.3dbA http://www.antec.com/us/productDetails.php?ProdID=22550
  18. [email protected], 1.39V, when both cores are for a couple of hours under maximal load (S&M FPU test) + 2xPrime95 Blend, PWMIC temp goes up to 54-55C, while the CPU is around 47-48C. No additional PWMIC cooling except silent 120x25mm fan on the top of CPU cooler (SI-120). Expecting low 60+ when the summer comes. Case has a good ventilation, sleeved cables, one intake 120x25mm fan and one exaust 120x38mm fan. Have also tried 2700MHz @ 1.54V, PWMIC temp went above 60C after less then a minute and after a couple of minutes it was 65C already, while the CPU temp was OK (50-51C). Obviosly, if I want to keep it on 2.7GHz, active cooling of PWMIC is a must!
  19. M_M

    Some O/cing Help on my 3800+

    I would recommend keeping the Vcore under 1.55V for air cooling and under 1.6V for water cooling for 24/7 every day operation. Also, take care that the CPU temperature doesn't rise above 57-58C even when the room is hot (like it will be during the summer) and the CPU is under maximum load. Try running S&M on both cores (FPU test for maximum heat generation), and leave it running for at least 30min. Aproximate how much hotter the room can get during the hot summer days and also add some safety margin. Note: For stock X2 cooler keep the Vcore under 1.45V (2.5-2.6GHz). For high end air coolers like TT Big Typhoon, TR SI-120, TR XP-120, etc, 1.55V (2.6-2.7GHz) should be fine, of course if the CPU can handle this speed and the case has a good ventilation (at least one 1x80mm intake fan, 1x120mm exaust fan) so the CPU temp always stays below 57-58C.
  20. If this is something that cannot be avoided, there should be at least some warrning message that this will happen, as this is not something that normal user would expect!!!
  21. I was thinking that maybe somehow BIOS autoconfiguration of memory parameters is not working correctly in your case...
  22. NCQ is a good thing if your typical usage is a heavy multitasking in respect to the hard disk, for example, encoding/decoding in the background, any kind of the server (web, file, game) etc. If single user environment is a better description for your usage, the disabling NCQ can even give some performance increase... Anyway, it is worth trying if disabling the NCQ will solve the problem, just to see will it help or not.
  23. M_M

    Mem test & Prime95

    First make sure that yuo are using the latest stable version of Prime95, as some older versions had some problems... If it is still failing most likely it is just a matter of time when will you experiance the problem... try finding what it is before that... maybe also try some other tools like OCCT, GoldMemory etc...
  24. Couple of ideas for all you guys having DC problems: 1) Try fixing the latency parameters in bios (do not let them to auto). Do this while in single channel, make sure the settings are stable, and then try dual channel 2) Try some other memory if possible 3) Try your CPU in some other motherboard 4) Try 2T (CPC disable)
  25. You can either get a new firmware from the Maxtor or disable the NCQ...