Posted January 23, 20178 yr I have a MSI 6870 hawk I'm trying to turn into a power card/zombie. The vrm does not power on and I can't find datasheet for the controller its an up1681 I think. Is their some way to force vrm on or should I just cut it in half and go from there? UPDATE here is the card so far got it all figured out thanks to Elmor and Nachtfalke. So there it is 1.2v+ with all 8 phases powered up. It's way easier than I thought as long as your controller has a data sheet available or someone does the leg work for pins to turn it on. Update 2 I got some mini dc dc buck converters from eBay like others have. I also added GPU vmod. Now it is self contained no extra wires to PSU. Edited February 18, 20178 yr by hidethecookies
January 23, 20178 yr Is the core gettin warm if you try to power it up? Should be uP6218am Controller Edited January 23, 20178 yr by VanBudd
January 23, 20178 yr If uP6218, check the following: Pin 26+48 = +5V supply Pin 50 = PWRGD (goes high if the controller is working as it should) Pin 51 = ENPWR (above 0.825V to enable controller) Pin 52 = ENVTT (above 0.825V to enable controller)
January 23, 20178 yr Author If uP6218, check the following: Pin 26+48 = +5V supply Pin 50 = PWRGD (goes high if the controller is working as it should) Pin 51 = ENPWR (above 0.825V to enable controller) Pin 52 = ENVTT (above 0.825V to enable controller) It says up1981a. Could it still have the same pin out since other 6870 Hawks have the up6218? Here is a comparison.
January 23, 20178 yr I think they have the same Pinout, but im not sure. You could measure the Pins with a DMM and compare. These Links should help you. MSI GTX570 TFIII PE hardmod - Page 2 MSI 6950 TFIII PE/OC- testing w/ CL3P20
January 25, 20178 yr Author If uP6218, check the following: Pin 26+48 = +5V supply Pin 50 = PWRGD (goes high if the controller is working as it should) Pin 51 = ENPWR (above 0.825V to enable controller) Pin 52 = ENVTT (above 0.825V to enable controller) Well it lookes like with a MSI hawk or Lightning card with the uP6218 you need to add 3.3v to PSI(power state indicator) pin 63 for all the phases to power on. I found a list of data sheets on xdevs. It includes the up6208 which has the same pinout as up1981/up6218 https://doc.xdevs.com/doc/_Datasheets/_DC_DC/ Edited February 7, 20178 yr by hidethecookies
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