unstable speed in PCIe x1 extender

[no_alone]

Hello,
I have a pc with 2 5850,  1 PCI-e x16 and 1 PCI-e x 1
And I'm experiencing unstable speed on the PCI-e x1
Anyone know what could be the reason for this??

bolth of the cards are overclocked 850,900  and one is stable on 320MH/S and the second one the PCI-Ex1 is going up and down between 260 to 320...
Anyhelp will be great thank you

[hugolp]

Im getting stable speed of 441Mh/s on a 5870 using a pci-e x1 to x16 extender (the extender has a molex to get the energy from the PS directly and not from the motherboard, got it at cablesaurius).

[no_alone]

Well I dont use a one with a molex. .Maybe I can modify it?
Could this be the problem?

[kripz]

http://pinouts.ru/Slots/pci_express_pinout.shtml

Reroute 12v from PCI-E to draw from molex.

[Freakin]

http://pinouts.ru/Slots/pci_express_pinout.shtml

Reroute 12v from PCI-E to draw from molex.

just pin 2 running to 12v in a molex connector is all you need?

Got a bunch of 1x extenders and don't want to wait to get some ones w/ molex from cablesarus

wasn't able to use my 3rd 5830 in a p5w DH.  I'm sure i'll have bigger problems trying to get 3x 5830 & a 5870 running in my 939 lanparty board

[Freakin]

nevermind, found it

I modified each of the four flexible PCIe extenders to re-route the five 12V lines (PCIe pins A2, A3, B1, B2, B3) to a single 16AWG stranded wire directly connected to one of the 12V outputs of the power supply.

http://blog.zorinaq.com/images/flex-pcie-4x-modified.jpg
http://blog.zorinaq.com/?e=44

Here is the prebuilt product from cablesarus, with BTC accepted

https://cablesaurus.com/index.php?main_page=product_info&cPath=1&products_id=11

[kripz]

The thing i dont understand is, 1000000A is being sucked in via molex but has to exit through the PCI lane, why dont people modify the negative?

[no_alone]

nevermind, found it

I modified each of the four flexible PCIe extenders to re-route the five 12V lines (PCIe pins A2, A3, B1, B2, B3) to a single 16AWG stranded wire directly connected to one of the 12V outputs of the power supply.

http://blog.zorinaq.com/images/flex-pcie-4x-modified.jpg
http://blog.zorinaq.com/?e=44

Here is the prebuilt product from cablesarus, with BTC accepted

https://cablesaurus.com/index.php?main_page=product_info&cPath=1&products_id=11

In this website it say it re-routed 5 12v lines...

http://pinouts.ru/Slots/pci_express_pinout.shtml

Reroute 12v from PCI-E to draw from molex.

But from this chart you can understand that there are only 4 12v lines
A2 A3 B1 B2
B3 is Reserved and not 12V ...
Soo do I also re-route him or not? thank you.
 

[kripz]

Dont know, i'd advise looking up the PCI-E specs when messing with an expensive computer/gfx card.