Thanks for the amazing and detailed reply, Vann

Do you think using two of these Aerocool XPredator Gold 1000W Modular would be a viable alternative? they would have 8 pcie connectors in total.
http://www.coolmod.com/aerocool-xpredator-80-plus-gold-1000w-modular-fuente-psu-precio
Mostly I can access these locally


Also, one question about the splitters, since I never used these. are they meant to be connected directly to the PSU vga slots so they can power 2 GPU with one connector? are they different to the usual regular pci-e cables you usually get with PSUs? excuse my ignorance

Hi, I have now a "rig" of 2 RX 470 cards (mostly my old good gaming pc adapted to mining), theorically I could put 3 on my motherboard, but my modular 750w tacens mars gaming only had 2 pciex connectors and could not find a way to connect a third card.

These frustrating problems with connectors got me thinking on how to power my next rig.

For next I want to use a 13 slot Asrock H110 Pro BTC+ with lots of RX 560, which are the only ones available now. They dont consume much, but still I have the problem of connectors...

Any sensible way of powering so many of these with one or two PSU, and which models are good for this?

Hola, estoy montando un pequeño rig de 3 graficas en una placa base con 3 slot pcie. El problema lo estoy teniendo para alimentar las graficas, compre una fuente Tacens mars gaming 750w modular ( https://www.pccomponentes.com/tacens-mars-gaming-mpii750-750w-modular?gclid=EAIaIQobChMI1bn-i5eR1gIV5LftCh0a2AJsEAQYASABEgJ6f_D_BwE ) en una tienda de informatica local, pensando que siendo modular seria suficiente, pero luego he descubierto que tenia solo para 2 conectores pciex.

Puedo alimentar 2 graficas RX 470, pero la tercera (hd7870 oc edition, con la que quiero minear monero) requiere 2 cables pcie de 6 pin. Aun si pusiera una tercera tarjeta que no consumiera mucho, tampoco tendria cables suficientes. Hay alguna manera de solucionar eso o realmente tengo que pillar otra fuente?


El otro tema es que quiero montar un segundo rig ya mas serio de 6 slot, o incluso mas con la placa que ha salido nueva de 13 slot, y no quiero que se repita el problema de la alimentacion, pero tampoco me quiero dejar una fortuna en fuente.

Que fuentes recomendariais para poder alimentar un gran numero de tarjetas? especialmente que tengan suficientes conectores pci-express?

I suspect there could be some voltage problem too.

- Asus card is plugged into PCIe 16x slot

- MSI card is plugged thru a 1x to 16x ribbon cable (with no extra power supply) this model https://www.amazon.es/Informatique-Riser-1-Puerto-16-x-suave-Reprise-alimentaci%C3%B3n-P6-Adaptada/dp/B071FNT4JK/ref=sr_1_8?rps=1&ie=UTF8&qid=1497961038&sr=8-8&keywords=riser

- My power supply is Mars Gaming 750W modular, which has a cable with 2 PCIe connectors, which are connected to both gpu.

Supposedly 16x provides 75W, and 1x just 25W, so I wonder if my connections would provide sufficient power

Managed to find 2x RX 470 the other day.
One is MSI RX 470 4GB, and the other Asus RX 470 Strix 4gb

The problems started when I flashed MSI RX 470 bios. I just did the typical straps with polaris (copy 1500 to next positions). After I flashed the BIOS I would get the error 43, device not working. After that I learned that it probably had to do with the drivers (Post Relive 16.2.1 version giving problems?)

but anyway, I switched back to backup bios, but the device problem wont disappear. Then it got worse and my PC would restart just after windows start, sometimes with strange colors, sometimes with a blue screen, but it seemed obvious its some issue with graphics driver. Soon I would not be able to use windows thru that card.

However, I had a second card, the Asus RX 470 Strix 4gb, so I plugged it in. I had to go out for the weekend so I just it left mining with no OC at all, and it would mine stable for 3 days at about 21 MH/S.

When I returned home, I received a riser from amazon so I could connect my other card (the MSI RX 470 that was having issues), it would be displayed in the device list with no exclamation marks. Also I tried to uninstall drivers and downgrade to a previous driver than the one was giving problems, but I dont think if it worked... (see the image below)

Seeing that it didnt have the device error any longer, I flashed both card's BIOS (just the straps) then set the GPU timings at 1100 / 1950 and  undervolt at -75, and power limit +25, nothing else, followed instructions from Imineblocks video.

For a few moments it did seem like it would work and started hashing at 26 MH each card and about 780 MH decred. Then after about 1 minute, it crashed and my PC got rebooted. It would happen again every time. Its not temperature problem, its never going higher than 67º

Tried every combination. Removed OC from both cards. It would crash. Messed with different values in undervolting, overclocking or underclocking and overvolting, sometimes it would last longer than others but in the end it would always crash. I noticed that when switching to other application like chrome in a page with a lot of images, it would hang and reboot right at that moment.

After that, decided to unplug the MSI card, and its dual mining at 26 MHs with no issues.

However, Im going crazy trying to figure how to fix my other card................. Didnt almost sleep for 2 days quite literally.




(I thought I had installed a pre 16.2.1 patch, but in Trixx I can read crimson 16.11.5 beta, did I do something wrong?)

Anyway, any idea on what could be going wrong and how could be fixed?

Any help very appreciated because this is driving me nuts

Pues esa es una pregunta que llevo tiempo haciendome. Siempre habia tenido la impresion de que habia que tener el mismo modelo de graficas en una misma placa, pero ahora tengo mis dudas

Se pueden combinar distintas graficas en la misma placa para minear? y bajo que circunstancias?

Gracias.

Pues mi intencion era comprarlas en Pccomponentes.com con financiacion a 12 meses, pero aunque salen listadas, las RX 480 salen como agotadas/no disponibles.

Donde las conseguis?