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Thread: GIGABYTE GA-EP45-UD3R LGA 775 (rev. 1.0)




  1. #11
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    Default Re: GIGABYTE GA-EP45-UD3R LGA 775 (rev. 1.0)

    Bigger problem in my opinion is that the header outputs so low signal that many fans won't even start, from the ones I've tried Noctua NF-P14 FLX and Akasa Apache have that problem. Noctua NF-P12 just barely starts and is running only at 700 rpm when system temperature is 35 on my EP45-UD3 system (full speed 1300). Even with Noctuas U.L.N.A adapter speed is 900 rpm and I'd say that it pretty quiet at that speed. Clearly the parameters for speed output should be fixed or made possible to adjust by user.
    Gigabyte GA-Z68XP-UD4
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    Fractal Design Arc Midi

    Gigabyte GA-Z77X-UDH5
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  2. #12
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: GIGABYTE GA-EP45-UD3R LGA 775 (rev. 1.0)

    Sys_fan2 normally does not work properly, although it is adjustable it normally only runs at half speed/half voltage

  3. #13
    kick's Avatar
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    Default Re: GIGABYTE GA-EP45-UD3R LGA 775 (rev. 1.0)

    Im not sure id agree with that.
    ie that it doesnt work properly.
    Its a temp monitored fan speed..
    The board isnt/wasnt that expensive so the system temp/fan speed monitoring isnt likely to be state of the art.
    I let my system cool down to room temp approx(monitored with the external nb temp sensor readout.)
    On startup I went direct into the pc health section of the bios as the system warmed up.
    The readouts in bios went like this
    Sys2 fan speed:946/1007/1036/1064/1092/1129
    Sys temp: :28/29/30/31/32/33

    they were the actual readouts in bios ,at that point I just booted into windows as nothing was varying much.

    Perhaps if your system is really cold like 20C or below when you initially boot up, the sys 2 fan header wont provide enough power to spin up the fan ?
    Im not sure ,but for me the sys 2 header seems to provide enough temperature feedback to maintain my overclock
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

  4. #14
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    Default Re: GIGABYTE GA-EP45-UD3R LGA 775 (rev. 1.0)

    Akasa Apache that I have for example needs output signal to be at least 60 % before it spins up on its own, that would probably mean something like 45 - 50 degrees temperature at system temperature sensor. Luckily on Snow Leopard I already have full control of that header, now my fan runs a minimum of 65 % speed at 30 degrees and goes to full speed at 45 degrees.
    Gigabyte GA-Z68XP-UD4
    i7-2600K @ 4.5 GHz, EK Supreme HF
    Kingston HyperX Genesis PC3-12800 2* 4 GB
    Radeon HD 7950
    OCZ Agility 3 120 GB
    XFX 650W Core edition
    Fractal Design Arc Midi

    Gigabyte GA-Z77X-UDH5
    i7-3770K @ 4.5 GHz, XSPC Raystorm
    G.Skill Ripjaws X 2* 4 GB
    Radeon HD 6870 * 2
    PNY XL8 120 GB
    Super Flower SF-700P14XE
    Bitfenix Shinobi XL

  5. #15
    kick's Avatar
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    Default Re: GIGABYTE GA-EP45-UD3R LGA 775 (rev. 1.0)

    Its all a bit circular tho ,the discussion.
    Circular.fan.airflow.. :)


    $10 fan.: runs at half speed,50%(900rpm) at 27C sys temp,runs at say 60%(1080 rpm)at 31c sys temp.runs at say 82%(1465rpm) at 41C.Runs at whatever ,somewhere higher than 82% 1465rpm between 41-45C say 12% more at 45C=94% of max fan speed.(Ive never seen an indicated system temp that high so I dont know)

    If the fan runs ok and the board changes the speed with some reference to the temperature sensor,why should we worry.
    It does for me.If I was that pushed ,I would connect my nb fan to a full speed fan header and have it running at 1800 rpm all the time.I dont seem to need it tho.

    my nb fan

    actually seems to have a max speed of 1700 rpm so 1465 rpm would be 86% of rated speed so at 45 c it might be running at 1600 rpm + if the sys temp got that high.

    your fan ,if that is yours,seems very quiet but also seems to have a speed limitation and a lower cfm so perhaps needs more power for startup etc,the current rating of .33a is almost double mine of .18a.

    This is my other akasa fan(max speed 1400 rpm) the airflow is comparatively low my quiet 120mm fan

    My two 120mm fans,aside from the cpu and psu ones are comparatively inexpensive.

    As we posters say tho, if it aint broke ,dont fix it :).
    Last edited by kick; 07-15-2010 at 10:14 AM.
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

  6. #16
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    Default Re: GIGABYTE GA-EP45-UD3R LGA 775 (rev. 1.0)

    Maybe you were lucky and got the one working version, I would be ok if I got 50 % speed at 27 C but now I need about 35 C to get even that. Same on both my Gigabyte boards. And looking at other people's comments very many seem to have that same problem. And that 35 C is just because of current weather, when ambient temparature is normal the sensor only shows 25-30 C which means so low signal that most fans wouldn't start.
    Gigabyte GA-Z68XP-UD4
    i7-2600K @ 4.5 GHz, EK Supreme HF
    Kingston HyperX Genesis PC3-12800 2* 4 GB
    Radeon HD 7950
    OCZ Agility 3 120 GB
    XFX 650W Core edition
    Fractal Design Arc Midi

    Gigabyte GA-Z77X-UDH5
    i7-3770K @ 4.5 GHz, XSPC Raystorm
    G.Skill Ripjaws X 2* 4 GB
    Radeon HD 6870 * 2
    PNY XL8 120 GB
    Super Flower SF-700P14XE
    Bitfenix Shinobi XL

  7. #17
    Lsdmeasap's Avatar
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    Default Re: GIGABYTE GA-EP45-UD3R LGA 775 (rev. 1.0)

    Ya sorry Kick, I should have mentioned that this only affects some boards, and apparently yours is not one that is affected but the sys_fan2 only running at half speed is a well known issue on GBT boards.

    Although I have not tested one myself in a while, so it could all be corrected now via BIOS updates, but I doubt it as I think it was a hardware design/issue

  8. #18
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    Default Re: GIGABYTE GA-EP45-UD3R LGA 775 (rev. 1.0)

    At least on my boards this is clearly a software bug, using an external program to control the header it works just fine. Using SpeedFan with Windows will give you one more working fan header.
    Gigabyte GA-Z68XP-UD4
    i7-2600K @ 4.5 GHz, EK Supreme HF
    Kingston HyperX Genesis PC3-12800 2* 4 GB
    Radeon HD 7950
    OCZ Agility 3 120 GB
    XFX 650W Core edition
    Fractal Design Arc Midi

    Gigabyte GA-Z77X-UDH5
    i7-3770K @ 4.5 GHz, XSPC Raystorm
    G.Skill Ripjaws X 2* 4 GB
    Radeon HD 6870 * 2
    PNY XL8 120 GB
    Super Flower SF-700P14XE
    Bitfenix Shinobi XL

  9. #19
    kick's Avatar
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    Default Re: GIGABYTE GA-EP45-UD3R LGA 775 (rev. 1.0)

    @mm67
    Hey I see your in Finland,I thought it was usually cold there,maybe it has a short hot intense Summer too.
    Moving on,it looks like your board is exactly the same as mine ver.1 and were using the same bios version?.

    Apparently our sys2 header has a bug/doesnt have one or something.

    Im wondering about speedfan.I still use it for speed monitoring etc ,but when I downloaded it ,over a year ago my board wasnt supported for individual fan adjustments.

    Is it now? and can I vary the speeds on the other 3 fans,aside from the cpu one.
    Yeh I could go check it out ,but Ill wait.
    You run it with win 7 and it works well?
    I might not get anymore o/clock ,but since its free it might be fun to play with fan speeds again.
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

  10. #20
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    Default Re: GIGABYTE GA-EP45-UD3R LGA 775 (rev. 1.0)

    4-pin headers can be controlled by SpeedFan and it works just fine. There's one more funny feature on this EP45-UD3 board, Sys_Fan2 header's output is connected to Speed1 and it's speed sensor is logically connected to Fan1 input. But Cpu_fan header's output is connected to Speed2 and speed sensor's input to Fan0. Took me some time before I could figure out why control didn't seem to work on Cpu_fan header. Yes it's a bit unusual weather in Finland now, two days ago was the warmest day since 1934.
    Gigabyte GA-Z68XP-UD4
    i7-2600K @ 4.5 GHz, EK Supreme HF
    Kingston HyperX Genesis PC3-12800 2* 4 GB
    Radeon HD 7950
    OCZ Agility 3 120 GB
    XFX 650W Core edition
    Fractal Design Arc Midi

    Gigabyte GA-Z77X-UDH5
    i7-3770K @ 4.5 GHz, XSPC Raystorm
    G.Skill Ripjaws X 2* 4 GB
    Radeon HD 6870 * 2
    PNY XL8 120 GB
    Super Flower SF-700P14XE
    Bitfenix Shinobi XL

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