simon753

34 minutes ago, Stan VE said:

Yes ! 8pin cpu cable with 4pos and 4neg  working fo a few days now ;)!!!

 

Please let me know how did you handle 8pin to barrel plus modification, it would be better if you share some photos  thanks in advance. 

On 2016年7月31日 at 4:08 AM, Stan VE said:

did u had molex to barel adapter ? If yes ! There must be a problem!!!  Looks like tons of people do this molex to barrel adapter and suffer from not stable gpu! But from what can i see suffer mostly people who actually need 75w or so from pcie. 

I had original akittio power adapter , solidgear 450w and thermaltek 600w. 

Both 450 and 600w  had barel adapter to dual molex . 

Zotac 750ti in bios its 38w max

Evga 750ti in bios 58w max

 

When Both of the psu with molex to barel

for my surprize evga shuts down during the load ! Furmark will make it panic..

Original 60w akittio all work like a charm but i can hear the card hungry for power.. 

 

Zotac works on both setups remmeber its 38w. So i had to dig !

 

Just take a look at ur typical molex connector ! It has this 5v! 

Look at ur 8pin pcie! Does it ?

 

Iread somewhere that this lines arent made to have a stable 12v without 5v .

i guess someone can explain this .....

 

i remmeber working as IT and we had this workstations with like 10 hdds and i used ibm only hdd that days and i had power failures with high quality power supplys .

 

And our gpu days we have this 8pin and 6 pin dedicated lines .. 

 

To make a story short thermaltek 8pin to barel (12v - 100w) works on both cards!!

 

U still must have working AGPM for the card to work properly ! 

 

 

 

Change Molex to barrel plug into 8pin to barrel plug might be a good idea for solving the instability issues, but I'm wondering if I can change CPU 8pin into barrel plug instead of PCIe 8pin as well?

5 hours ago, Boykodev said:

In my case the GPU I used (EVGA GeForce GTX 750Ti) doesn't require additional power. So I only needed to supply 12V to barrel plug.

I don't really know how can you use the 6pin and 8pin cable with this power supply. But if they all use 12V - I think its possible.

Yeah, you can only use one power source, I don't know the true reason why, but everyone keep saying that, so it must be true! 

Thanks for your response, I'll figure out how to use additional power on my GTX Titan, and good luck with your set. I'll keep update my work here if I successfully make my set work, I think it can help more people who are suffered by all these issues.

9 hours ago, Boykodev said:

Got myself a 400W power supply that outputs 12V only. It looks something like this:

https://www.amazon.com/TOOGOO-Switching-Switch-Supply-Driver/dp/B00L316X7E

 

Works fine. No more freezes. The only problem is that its fan is pretty loud and distracting.

I've been thinking about that kind of power supply as well, could you tell me about how did you manage the 6pin and 8pin cable with that? I think you can only use one power sources to prevent GND loop right? Otherwise I can just simply switch my Molex to barrel plug to this 12V only power supply and use my original 850W power supply to power the gpu on the other side by 6pin and 8pin plug, sould I ?

But actually I have a 850W power supply, and the problem is still there, I would try to do the tricks you told me, fingers crossed

I have the same problem, you can try underclock your cpu a bit and do benchmark again to see if it would freeze or not, if it does just underclock a bit more. 

I have almost the same setup with you, but there's some bottle neck issues.

I have almost the same setup with you, but there's some bottle neck issues.

Do I need to do PCI compaction every time when boot into windows? or I can just save the process and do it automatically every time?