GTX 970 with this PSU

[BorjaG]

Hi. I've this PSU with only one pci express and 2 molex. it's possible use the gtx 970 4 GB which needs 2 6 pin?
and the 960 4 GB which needs 6 pin and 8 pins?

http://www.mrmicro.es/componentes/fuentes-de-alimentacion/l-link-ll-ps-750-80-unidad-de-funte-de-alimentacion_23080/

 

[ihog]

Frankly, I wouldn't even use that PSU.

 

[JamesSneed]

Sure its no problem at all. Just get a molex to PCIE pin adapter(many GTX 970's will come with them as well).

 

[JackNaylorPE]

1. That PSU is of extremely doubtful quality

2. Adapters are a risky proposition

3. You have no data indicating where the load will be placed on what rail and whether that rail has adequate capacity

4. How many pins does your one PCI connector have ? Not all 970s require two 6 pin connectors. The Asus model uses a single 8 pin

http://www.bit-tech.net/hardware/graphics/2014/09/19/nvidia-geforce-gtx-970-review/2

 

[BorjaG]

1. That PSU is of extremely doubtful quality

2. Adapters are a risky proposition

3. You have no data indicating where the load will be placed on what rail and whether that rail has adequate capacity

4. How many pins does your one PCI connector have ? Not all 970s require two 6 pin connectors. The Asus model uses a single 8 pin

http://www.bit-tech.net/hardware/graphics/2014/09/19/nvidia-geforce-gtx-970-review/2

the pcie connector have 6 pin. there are 4+4 for CPU, and other connectors to sata, molex and the mainboard.
i think i must buy a new psu. recommendations?

 

[JamesSneed]

"2. Adapters are a risky proposition"

No they are not risky not even a little. Don't be silly. There is nothing risky about molex to PCIE adapters. Its just changing the connector on the end of the 12v cable.

http://www.newegg.com/Product/Product.aspx?Item=9SIAASP40C2772&cm_re=pci_to_molex-_-1VJ-001T-00001-_-Product

http://www.newegg.com/Product/Product.aspx?Item=9SIA50M31B1533&cm_re=pci_to_molex-_-9SIA50M31B1533-_-Product

 

[JackNaylorPE]

I have had too many boxes wind up on my workbench after users tried adapters. And if you read the OP, his PSU has only two molex connectors. If you were to stay within card manufacturers recommendations who sometimes used to provide twin molex to 6 pin adapters with their cards 6 pin, you'd need two of the 2nd of your two links requiring 4 molex connection on PSU ... he only has 2 ... do the math.

The problem however most oft lies with the cheaply made adapter connectors ... though I have seen burnt wires (on adapters like your 1st link which can not meet proscribed amp ratings) burnt connectors are more common. I wouldn't risk a $75 PSU and $320 GFX card to a cheap $3.00 adapter ....

 

[JackNaylorPE]

the pcie connector have 6 pin. there are 4+4 for CPU, and other connectors to sata, molex and the mainboard. i think i must buy a new psu. recommendations?

http://www.tomshardware.com/answers/id-2311121/power-supply-requirements-nvidia-gpus.html#14243229

A 500 watter will do the job, add some headroom if overclocking.

$55 S12 520 - https://pcpartpicker.com/product/fZyFf7/seasonic-power-supply-s12ii520bronze

$64 S12 620 - https://pcpartpicker.com/product/nB3RsY/seasonic-power-supply-s12ii620bronze

$65 B2 750 - https://pcpartpicker.com/product/JYyFf7/evga-power-supply-110b20750vr

The B2 (usually available from NCIX @ $48) will handle twin 970s if not going too much on the OC.

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story5&reid=185
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=393

 

[rcald2000]

+BorjaG I agree with the majority; I wouldn't use that power supply to power a GTX 970. Also, are you aware that the 970 is about to be replaced with the GTX 1070? If I were in your situation, I would upgrade the power supply, and I'd get the GTX 1070 when it releases.