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Does M2 can handle Dual-Core CPU?

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  • Does M2 can handle Dual-Core CPU?

    I am currently using Dell Optiplex computer with 1.7ghz CPU and 256Mb ram. I never got into a problem with M2 with this machine. I have just installed another LCD monitor so I am looking for a motherboard that has dual video out put (DVI, VGA).
    I am about to purchase Intel BOXDG41MJ itx motherboard that has dual output and my CPU is E5300 Pentium Dual core with 1GB memory. now here is my question, does M2 can handle this much load on it? if not, what would be my next motherboard option with dual output? I could not find any cheaper than this:-(

    I really hate to add dual output graphic card on my current machine. I did this but I am not satisfy at all. when ever I was passing speed bumps or when I was driving on a rocky road, pc would crash and I had to restart PC!!! I am guessing that graphic card was moving inside the slot so its better to have all in one peace.......


    I would appreciate any help
    There is nothing impossible in the world :-)

  • #2
    It's not about the series of CPU.
    It's about the power consumption of the CPU.

    There's a FAQ about how to determine the power draw of your CPU.
    Have you looked in the FAQ yet?
    How about the Wiki?



    Under normal circumstances, a signature would go here.

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    • #3
      thanks a lot i read it. so my CPU consumes 65watts. M2 provide only 96watts. I need 24 watts for my LCDs. so do you think that 7watts is enough for HDD and motherboard?
      There is nothing impossible in the world :-)

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      • #4
        the m2 should provide about 150w. its rated 160w max, and there are a slew of 45w cpu's from both intel and amd that are now prime for carpc's.

        specifically, amd's athlon II x4 600e. pair that $150 chip with a $100 790g motherboard and youre gaming in your car, encoding high def movies... anything. and you wont even use much more then 100w for the total system under load.

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        • #5
          I googled 790g motherboard and its ATX, right? I going to move to ITX as my case does not have space for ATX motherboard and also my big concern is to get dual monitor mobo and this motherboard does not have dual output.
          I also found Intel D945GSEJT that has built in Atom CPU. should I go for this one or get that first motherboard with 45W CPU on it?
          There is nothing impossible in the world :-)

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          • #6
            CPU: 65 watts
            Hard Drive: 30Watts
            LCDS: 24watts
            Mobo: 10watts
            Total: 130/150watts

            That leaves you ~20 watts for USB and accessories
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            • #7
              you dont really want to put more then 80% load on the m2.. or any power supply for that matter. if you can keep your system under 150w peak draw then you should be safe. 20w for usb and accessories is not that much.

              atom cpu's are pretty terrible, even the dual core ones. i know a lot of people here use them in their cars, but a lot of people also complain about their lack of horsepower.

              im not sure if you can do athlon II's on a itx system, but i wouldnt doubt if they dont show up soon if they havent yet. a 600e w/ 3300 graphics and you can forget about needing to upgrade for years... the amount of muscle you can get for under 150w nowadays is just incredible.

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              • #8
                Originally posted by justchat_1 View Post
                CPU: 65 watts
                Hard Drive: 30Watts
                LCDS: 24watts
                Mobo: 10watts
                Total: 130/150watts

                That leaves you ~20 watts for USB and accessories
                CPU may be rated at 65W but my entire ITX system with an E8400 at stock speed/voltage draws 5.4 amps (+/- 1.5%) on the 12v input (65W total) to the dc-dc converter when running Intel Burn Test with a 3.5" hdd attached. My 3.5" hard drive draws about 5.5W, my new 2.5" hdd about 2W load and my Intel SSD 150mW. LCD is rated at 1A at 12v so 12 Watts, motherboard is about right with onboard video. Your numbers are a little off but figure anyone reading this thread should be pointed to more accurate numbers. Of course, YMMV.

                With a decent motherboard, running at stock speed or underclocking, with undervolting, can easily get processor power consumption down below 50W and I would recommend looking for parts that allow this. I ran my Core2 at 950MHz (stock voltage due to lack of undervolting for my motherboard) and my consumption went 2.1A idle/3.1A cpu load - 28 watts less from underclocking to still usable speeds. This low, the system still booted Windows 7 quickly, much faster than an Atom at 1.6GHz. A <50W system (minus usb and lcd power draw) is completely attainable in a car without sacrificing processing power.

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                • #9
                  Results are hardware dependent.....but lets take a look at the setup you describe:

                  Hard Drive peak draw is during spin up....during use a hard drive will draw significantly less power (probably only standby current in a processor burn-in test). 3.5" drives are rated for a max of [email protected] or 30watts....2.5" are rated closer to 5w peak which again occurs at spin-up.

                  2 LCDs x 12W = 24W...enough said

                  5.4A*12V=64.8W-5.5W Hard Drive=59.3W or ~92% of peak rated power...accounting for the error in your measurement and speedstep during register transition should also put the 10w peak number at pretty close to correct.

                  The CoreDuo architecture has built in power management far more efficient then undervolting....what your doing is capping peak power draw but actually using more power over time. Not to mention the unnecessary performance penalty.

                  To the OP:
                  The reason we measure in peak usage is to ensure you have a system that never fails. Realistically your system will use 1/8 of peak power when idle, and will never approach that magic number during use. That said, we account for it anyway to allow for things like the life of a power supply (which could be very short if using 80%+ its peak constantly) and so that even if a very unlikely peak draw does happen you know it will not overload the power supply and cause some potentially ugly results.
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                  • #10
                    ok I have changed my mind so far. as none of you guys gave positive feedback to Atom processor, I would not go for Atom anymore.
                    another thing that i have noticed is that none of you has noticed that when M2 says 150watts MAX, it means 150Watts OVERALL...I mean each rail has different current.
                    In M2 manual it says 12V rail can provides 8amps MAXIMUM. that's 96watts, right?
                    so if I draw 24 watts for my LCDs, I will get only 72watts left for my motherboard, CPU, HDD and other stuff. i don't need to be worry about other peripherals as they use 5V and 3V rails I guess.
                    and I think that Intel DG41MJ is totally wrong option for me, I tell you why. these two screen shots are from M2 Power Characteristics and Intel DG41MJ Electrical Considerations.


                    M2


                    Intel ITX motherboard


                    look at requirement. none of them match with M2!!!
                    There is nothing impossible in the world :-)

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                    • #11
                      that's for a 65w processor, and those values are a bit high anyway. i run a mATX intel board, and my manual has the same page in it. i run a 35w processor though, and if anything is overloaded on my m2 it's the 5v usb line.

                      also, these intel boards have a lot of safety trips built into them. theyre not configurable or anything, but say you put too many usb devices on it, the board will refuse to boot until you remove the devices and reset the cmos.

                      good eye on watching out for each actual rail though, just dont let that table confuse you. if you have a 45w chip, and the mainboard eats maybe 35w, youll have enough for a harddrive and a cdrom because youll rarely hit peak draw.. you dont game while encoding videos while burning cd's.... power all your usb devices with a seperate 5v regulated supply and you should have a very solid setup.

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                      • #12
                        ok then I would go for that motherboard :-)
                        By the way is wattage calculation for AC same as DC? like watt=A*V ? if so, I just measured the amps that my dell pc is using at home. voltage was 230.6 and it was using 0.24 amps.... so it is even less than 100watts! it has normal big hard drive on it and it was playing DVD when I measured it...
                        There is nothing impossible in the world :-)

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                        • #13
                          Originally posted by shahabmusic View Post
                          ok then I would go for that motherboard :-)
                          By the way is wattage calculation for AC same as DC? like watt=A*V ? if so, I just measured the amps that my dell pc is using at home. voltage was 230.6 and it was using 0.24 amps.... so it is even less than 100watts! it has normal big hard drive on it and it was playing DVD when I measured it...
                          not too surprising, a majority of mid-level pc's out there dont pull more then 200w, even though most people think they need 400w power supplies.

                          but yeah, without getting techinical about everything you can basically think of VA the same as Watts. E x I = P (voltsXamps=watts) and its the same a/c or d/c.

                          there is actually a differene between VA and Watts, has to do with true RMS i think but it wont be any different between the two in our applications. i dont even know specifically anymore how it goes, im just an electrician it doesnt mean im that great at my job

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                          • #14
                            Originally posted by justchat_1 View Post
                            Results are hardware dependent.....but lets take a look at the setup you describe:
                            I understand peak and everything but on power on, the videocard/chipset also uses much less power. I have found peak system consumption to be when running IntelBurnTest and some graphics utility (don't remember the name but I use it for heat generation and stability testing in systems), not on power on, I've used 15-20 more watts here than getting a peak reading from power on. Of course, I also get 150w more with this than power on with my desktop system also (which fits a ton of hardware into a 380w psu - 325w peak current draw from the outlet/115v itself). I use a clamp meter for the higher voltages/amperage and a couple multimeters for the lower. I find that a Kill-A-Watt matched up with the clamp on certain readings/power supplies but is way off on others. The Ideal-branded clamp has been pretty damn accurate in my testing. I'll be glad once platter drives go away completely as they are noisy and power hogs in general - it will be nice to not have to figure them into any type of equation in any way. Intel does SSD properly with very low power consumption.

                            I have the CPU voltage set with RMClock which only lets me go to the minimum VID, the same voltage used at 6x. I'm not losing anything by running the processor at its minimum VID for both idle and load. I really wish my motherboard allowed undervolting though - my Q9550 runs at 3.8Ghz at 1.08v in another system (lowest undervolt it will allow which is 0.1v under VID). Building an efficient system is useful both at home and in the car.

                            Voltage rails are correct as they need planning but for me it's a non-issue as I must have most of my USB devices away from the PC and use a powered HUB for the job. This isn't to say people won't want to plug it all into the 4, 6, or even 12 ports available on some motherboards.

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