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M_M

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  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...
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