December 29, 201311 yr Splave, don't mod it yet man. These cards have a different design. Amd needs to come through with a special bios that ignores signal from controller to core
December 29, 201311 yr That's what I thought.. i was itching to do it also... think it will happen at all? Pretty disappointing
December 29, 201311 yr Splave, don't mod it yet man. These cards have a different design. Amd needs to come through with a special bios that ignores signal from controller to core  Can't just remove controller?
December 29, 201311 yr Yeah, there's a feedback loop from PWM to GPU to check the current (for protection). If you cut the PWM, the feedback loop is broken, and the GPU won't work.
January 3, 201411 yr I got some info via the IR engineer and it seems the R9-290X is using the new VRM Design. It uses SVID just like the new CPU VRM spec, and epower board is using the old VRM. The bottom line is that the EVGA Epower board can't support R9-290X. There is basically no way to make it run as the power board has no SVID Signal! We are going to make some power boards that support these 290X cards
January 3, 201411 yr I got some info via the IR engineer and it seems the R9-290X is using the new VRM Design. It uses SVID just like the new CPU VRM spec, and epower board is using the old VRM. The bottom line is that the EVGA Epower board can't support R9-290X. There is basically no way to make it run as the power board has no SVID Signal! We are going to make some power boards that support these 290X cards  Yes... is true... No way... I did try to feed a AMD 290X with Epower.... so, we had problems with 1.8 line voltage... Then we installed one more zombie... and have problems with PLL voltage... Finally we used one more zombie (3 zombies)... and even with 3 external power to feed... was impossible to use the zombie... Also... is good to remember that we have 2 Vready in the PWM... and we try with 1 and 2 PWM disabled... and even we removed the PWM it not works... About 30 hours trying with no sucess... So... we used normal hardmodding https://www.facebook.com/media/set/?set=a.559801364095137.1073741879.290467317695211&type=1  Pay attention on the inductors... is not in line.,.. lol .... I put it again and never will be uniform libe brand new;
January 4, 201411 yr I got some info via the IR engineer and it seems the R9-290X is using the new VRM Design. It uses SVID just like the new CPU VRM spec, and epower board is using the old VRM. The bottom line is that the EVGA Epower board can't support R9-290X. There is basically no way to make it run as the power board has no SVID Signal! We are going to make some power boards that support these 290X cards  EPower can support any load, including R9-290X. Yes, you do need to take care of fooling stock PWM controller signals, to make sure other power convertors and GPU get proper signals first, BEFORE using EVGA EPower for GPU power.  For extreme OC we usually don't want GPU controlling our voltages (disregarding if it goes from stock VRM, or external VRM), which is reason of SVID interface there. Lack of knowledge to properly mod card does not mean it cannot work But anyway, let's see other VRM board with SVID working on 290X first. Having SVID will still do nothing, was there , done that before  Rbuass run into power sequence/powergood issues after he disabled VGPU stock PWM controller, which is clearly the reason why he had no voltage on those secondary rails. Please don't mix different issues together.  If anybody want - get me 290/290X and I'll post modding guide, lol Yes, education is expensive Edited January 4, 201411 yr by TiN
January 4, 201411 yr EPower can support any load, including R9-290X. Yes, you do need to take care of fooling stock PWM controller signals, to make sure other power convertors and GPU get proper signals first, BEFORE using EVGA EPower for GPU power.  For extreme OC we usually don't want GPU controlling our voltages (disregarding if it goes from stock VRM, or external VRM), which is reason of SVID interface there. Lack of knowledge to properly mod card does not mean it cannot work But anyway, let's see other VRM board with SVID working on 290X first. Having SVID will still do nothing, was there , done that before  Rbuass run into power sequence/powergood issues after he disabled VGPU stock PWM controller, which is clearly the reason why he had no voltage on those secondary rails. Please don't mix different issues together.  If anybody want - get me 290/290X and I'll post modding guide, lol Yes, education is expensive  Thanks for the information Tin. Send please your shipping details by PM and I will send you the R9 290X... I believe nowadays, you are the only in the OC community that can do that zombie works on 290X.  Edited January 4, 201411 yr by rbuass
January 5, 201411 yr Rbuass, u got the message I'll mod it, shoot guide, maybe small video running FSE, then remove epower and send back. If anything happens - not my fault
January 5, 201411 yr I am in to donate on Tin's effort cause I couldnt send him a 290x to find the mods ^^ Edited January 11, 201411 yr by FireKillerGR
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