About Kato85

@daddle    Perhaps i was too fast replying you here.   The reason for using a second GPU is that i will be using it for mining cryptocurrency. Normally, one could not use a GPU of todays standard in a PCI-E x1 slot, as the bandwith would be too low, however when it comes to mining cryptocurrencies, the bandwith is low, and only the memory is used.   What my real question is: how do i make the PC detect the second GPU, which has been connected to the PCI-E x1 thru the riser card. As of now, i have been unsuccessful in making the PC detect the card.   The steps which i have taken so far:   1. checked the Device Manager, but i can only see the first GPU there. 2. I have also run the "Add Device" in the Control Panel, but nothing is showing up. 3. I have also checked BIOS, howerver, since there does not seem to be an option to check the CPU in BIOS, this has also been unsuccessful.   Help would be much appreciated, thank you. ... View more

Thank you for your reply.   So what you are saying is that the PCI-E x1 is not functioning properly?   Because one can use the PCI-E x1 for a dedicated second GPU with rizer or adapter in any other motherboard setup or computer, but not in this one?   If this is true, then Medion has to inform customers that their PCI-E x1 is not working properly, as customers might buy the PC in order to use both the PCI-E slots for GPU:s   This was my reason for buying this computer, and if what you are telling me is true, then i have to return the PC to the retailer and point out this inconsistence as a reason for returning the product and getting a refund. ... View more

I have read that in order to use a second GPU thru a riser (as the motherboard for the Medion ERAZER ENGINEER P10 - MD34911 only has 1 PCI-EX16 slot) one has to change to PCI-E v. 3.0  in order for the PC to recognize the riser being attached in the PCI-E x1 slot.   I have now connected my second GPU to the riser, which has been connected to the PCI-E x1 slot. Both the riser and the GPU is showing their lights activated, which indicates that they are both connected, the problem is that the software is unable to detect the GPU thru the riser.   I have checked the Device Manager, but i can only see the first GPU there. I have also run the "Add Device" in the Control Panel, but nothing is showing up.   So it seems that perhaps i need to change to PCI-e version 3.0 after all. But since this does not seems to be an option in BIOS for this specific computer, then i would require more help from you professionals in order to be able to change from PCI-E 4.0 to PCI-E 3.0   Help would be much appreciated, thank you. ... View more

Hi.   Didnt get any answer but i found it out myself now.   The PSU 550W is not able to mount a second RTX3070 GPU as the number of PCI 6-pin cables are not enough, so i had to buy a new PSU (Corsair 750W RBG) that had space for 4 GPU:s Now, can one use Molex cables for GPU? One can use MOLEX to PCI 6-pin cables, butnot recommended. So better to just get a new PSU. Which is bad considering the motherboard can accept 2 GPUs (1x16-pin PCI-E & 1x1-pin PCI-E)   So please, close the thread, thank you for the help. ... View more

Here is the 550W PSU installed in the PC: https://ibb.co/yPYnqbX   The unused MOLEX cables connected from the PSU: https://ibb.co/C1sYwv1   The riser-card i am thinking of using. https://ibb.co/G3RS0st This one has connection for both SATA,MOLEX and PCI 6-pin cable. SATA wouldnt work for RTX 3070-card as the SATA draws 54W and the 3070 75W. Perhaps MOLEX would work but it depends what V the PSU has.   https://ibb.co/5KjzrDX The second GPU i want to install on the PC using the riser. As the PC only has 1 PCI-E X16 and 1 PCI-E x1, and the X16 is already in use with the primary GPU (ZOTAC RTX 3070) i have to use the riser to connect the PCI-E x1 to the PCI-E x16 ... View more

Thank you for your reply, however i am not sure that you provided the correct specifications. I opened up the side of the Medion ERAZER ENGINEER P10 (MD34911) and i see that it is powered by a INWIN B55E 550W PSU, not a 650W PSU. I was hoping to see some unused 6-pin PCI-e power cables, however there was none. All i could see was one pair of unused SATA-cables, as well as one pair of unused MOLEX cables. As i want to connect the PSU to a secondary GPU (GIGABYTE RTX 3070) thru a riser, it probably wont be sufficient to use the SATA cables, as they only provide around 54W, while the PCI-E riser draw around 75W. However the MOLEX cables might be useful, but i am unsure how much power the MOLEX cables which has been attached to the PSU in the Medion ERAZER ENGINEER P10 (MD34911) what effect they have. Molex cables can draw different effect depending on the PSU they are connected to. Normally one should probably connect a RTX 3070-card thru a 6-pin PCI-e Power cable which draws 75 W, but i see in this case that it is not an option. Altho the GPU for which the computer came with has 2 6-pin+2-pin PCI-e Power cables, i cant any more of these available to connect to the PSU. You tihnk it would be safe to connect the riser card to the unused MOLEX cables for the secondary GPU? I could overclockl both of the RTX 3070 GPU:s so that they both use around 125W, that would be 125+125+around 100 for the rest of the PC which equals to 350W for a PSU which can take 500. Using the 80% rule the amount of wattage to be put on the PSU limit would then be 400W. ... View more