750 Watt PSU only has 1 8 pin but I need 3!!

[Yapsonark]

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-2600K 3.4GHz Quad-Core Processor
CPU Cooler: Cooler Master V6 GT 93.7 CFM CPU Cooler
Motherboard: Asus P8Z68 Deluxe ATX LGA1155 Motherboard
Memory: A-Data XPG Gaming Series 4GB (2 x 2GB) DDR3-2000 Memory
Memory: A-Data XPG Gaming Series 4GB (2 x 2GB) DDR3-2000 Memory
Storage: A-Data S511 Series 60GB 2.5" Solid State Drive
Video Card: EVGA GeForce GTX 590 3GB Video Card
Case: Cooler Master HAF 912 ATX Mid Tower Case ($52.99 @ SuperBiiz)
Power Supply: Ultra 750W ATX Power Supply

To start with, I own everything on this list, I'm trying to piece together a computer with leftovers from recent upgrading etc. This is what I got so far.

My issue is with this 750 Watt PSU, it only has 1x 8-pin but my build requires 3 of them. 1x for the mobo and 2x for the video card. From what ive found already I'm going to need an adapter to get the 2x extra I need.

The questions I'm having are..

The single 8-pin PCIE connection coming from the PSU I was planning to plug directly into the motherboard. Can I do this? I've already tried and it fits perfectly but I ask because this PSU has been used for the last 5+ years on a mobo that only used a 4-pin. I just want to verify with you guys before turning it on.

What would be the best adapters to use to power up the 2x 8-pin connection on the GTX 590?

Molex to 8-pin? 6-pin to 8-pin?

Here's a Molex Version I found that looks to be perfect.
http://www.newegg.ca/Product/Product.aspx?Item=N82E16812198022&cm_re=6_pin_to_8_pin-_-12-198-022-_-Product

or a 6-pin to 8-pin version
http://www.newegg.ca/Product/Product.aspx?Item=N82E16812706014&cm_re=6_pin_to_8_pin-_-12-706-014-_-Product


So with this build is it safe to use this PSU with 2x adapters on the 6-pins to
power up the GTX 590? Also is there room for minor additions like a hard drive or 2?


Thanks!

 

[Cons29]

how much is that PSU? i am not familiar with ultra brand. but, a 550w should have 2 pci-e connectors. so a higher ones will be sure to have more if not the same. get a better quality psu if this one only has 1

 

[furiousss]

why gtx 590?

 

[Yapsonark]

why gtx 590?

Well the first thing I said was I own everything on the list so
I've chosen GTX 590 for 2 reasons, its free and I own no alternatives.

 

[Vic 40]

You could try an adapter that connects the two 6pin pcie cables into one 8 pin pcie cable like this one,
http://www.google.nl/url?sa=t&rct=j&q=&esrc=s&source=web&cd=16&ved=0CE0QFjAFOAo&url=http%3A%2F%2Fwww.avadirect.com%2FTwo-6-pin-PCIe-Power-to-One-8-6-pin-PCIe-Power-Adapter-Cable%2FProduct%2F4386663&ei=ioBUVZL6L8GesAHJyIHwBA&usg=AFQjCNHiwS6nUMdVCYCgsfWzUm9cdx31UQ&bvm=bv.93112503,d.bGg&cad=rja
I wouldn't get one that you linked.

Like these that came with the card according to the link you gave,
http://cdn.pcpartpicker.com/static/forever/images/product/df6a04f3cf79f5eec21064509e6ae86a.256c.jpg

As above said would a better psu be the better choice.

The single 8-pin PCIE connection coming from the PSU I was planning to plug directly into the motherboard. Can I do this?

NO,you don't do this,you use this one for the gpu.There should be a good 8pin EPS connector for the motherboard on that psu.

 

[Yapsonark]

how much is that PSU? i am not familiar with ultra brand. but, a 550w should have 2 pci-e connectors. so a higher ones will be sure to have more if not the same. get a better quality psu if this one only has 1

If you look at the 2 adapter links I've provided it shows an option where I can keep and continue to use this PSU since I already own it and have no other use for it.

I'm trying to find out if by using the adapters will there be any danger to the computer in any way. My goal is to use what I have, if possible avoid buying any replacements.

 

[Yapsonark]

You could try an adapter that connects the two 6pin pcie cables into one 8 pin pcie cable like this one,
http://www.google.nl/url?sa=t&rct=j&q=&esrc=s&source=web&cd=16&ved=0CE0QFjAFOAo&url=http%3A%2F%2Fwww.avadirect.com%2FTwo-6-pin-PCIe-Power-to-One-8-6-pin-PCIe-Power-Adapter-Cable%2FProduct%2F4386663&ei=ioBUVZL6L8GesAHJyIHwBA&usg=AFQjCNHiwS6nUMdVCYCgsfWzUm9cdx31UQ&bvm=bv.93112503,d.bGg&cad=rja
I wouldn't get one that you linked.

Like these that came with the card according to the link you gave,
http://cdn.pcpartpicker.com/static/forever/images/product/df6a04f3cf79f5eec21064509e6ae86a.256c.jpg

As above said would a better psu be the better choice.

Since this PSU has 2x 6-pins and that adapter you linked uses 2x 6-pins should i get a "2x Molex to 1x 8-Pin" as well? (only 1x 8-pin with this PSU and need a total of 3x)

The video card I got was part of a PC bundle I purchased years ago and they decided to leave out a lot of the extras

 

[Yapsonark]

NO,you don't do this,you use this one for the gpu.There should be a good 8pin EPS connector for the motherboard on that psu.

thank you for mentioning that, I didn't know!! No there is only 1x 8pin available.
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3276567

on that link it says ""4-Pin/8-Pin EPS Connector""

I don't know what this means but Ive already examined each connection and there is only the 1x 8-pin. I have a 4-pin that was used in the old mobo but well... thats a 4-pin. Am I missing a 8-pin somewhere?

 

[Vic 40]

Since this PSU has 2x 6-pins and that adapter you linked uses 2x 6-pins should i get a "2x Molex to 1x 8-Pin" as well? (only 1x 8-pin with this PSU and need a total of 3x)

Strange,from the specs at TigerDirect,

Motherboard Connector 20+4 Pin
SATA Power Connector 4
4-Pin Floppy Connector 2
4-Pin Peripheral Connector 6
6-Pin PCI-Express Connector 2 for the gpu.
8-Pin PCI-Express Connector 1 for the gpu.
4-Pin/8-Pin EPS Connector 1 !! for the motherboard.
4-Pin P4 1

One more thing,Ultra you will find in tier 5 here.

Tier Five
Avoid IMMEDIATELY. These units are highly unsafe to use. No such protections added, very thin gauge wiring used, false advertising and too much to list. Reference to a higher tiered unit for a better, money saving and a much safer unit. For your safety's sake, please don't order or pick one up for use in your system. These units are a potential fire hazard and could even kill you, let alone your system.

 

[Yapsonark]

One more thing,Ultra you will find in tier 5 here.


Tier Five
Avoid IMMEDIATELY. These units are highly unsafe to use. No such protections added, very thin gauge wiring used, false advertising and too much to list. Reference to a higher tiered unit for a better, money saving and a much safer unit. For your safety's sake, please don't order or pick one up for use in your system. These units are a potential fire hazard and could even kill you, let alone your system.

I think I will temporarily cause its all I currently have available and in a few months replace.
I've been using this power supply for over 5 years no problems. Now that i'm aware of how bad this PSU is I plan to replace it. Has a lot of positive reviews here

Motherboard Connector 20+4 Pin
SATA Power Connector 4
4-Pin Floppy Connector 2
4-Pin Peripheral Connector 6
6-Pin PCI-Express Connector 2 for the gpu.
8-Pin PCI-Express Connector 1 for the gpu.
4-Pin/8-Pin EPS Connector 1 !! for the motherboard.
4-Pin P4 1

I don't know what to say, I've looked at every single connector.... there is only the 4-pin... a single 4-pin I can't even double 2x 4-pins like on some PSU's. I'm very confused at what this means.

Is it possible that there was a adapter that came with the PSU which would convert a 4-pin EPS to a 8-pin?

I also recently purchased a GTX 970 and it came with a 2x Molex to 8-Pin so if I do find this mysterious 8-pin I've got all I need!

 

[Yapsonark]

Motherboard Connector 20+4 Pin
SATA Power Connector 4
4-Pin Floppy Connector 2
4-Pin Peripheral Connector 6
6-Pin PCI-Express Connector 2 for the gpu.
8-Pin PCI-Express Connector 1 for the gpu.
4-Pin/8-Pin EPS Connector 1 !! for the motherboard.
4-Pin P4 1

Sorry, my mistake lol wrong PSU linked originally

 

[Yapsonark]

So with the correct information and a picture of what I got for connectors. Is that a 8-pin EPS connector that I can plug into the MoBo? Would 1 or 2 6-pin to 8-pin connectors work?

I can't seem to find this PSU online anywhere...

 

[Cons29]

if ultra is tier 5, i would not touch it with a pole

 

[nostall]

Vic40 gave you the correct information for how to get two 8 pin PCI-E connectors.
The 8 pin connector is for the 8 pin auxillary +12 Volt power to the CPU. That 4 pin connector is for boards and CPU's that only need a 4 pin aux. power to the CPU. Do not use either for the video card.
Vic40 pointed out that your video card originally came with adapters to adapt you 4 6 pin connections to 2 8 pin: If you can't find them I would give EVGA a call and tell them you lost them, they might send you some new ones. Otherwise you will have to purchase a couple (again, look at Vic40's post)
Like others, I would be very leery of using that PSU for anything heavy duty. I just looked at JohnnyGuru.com and Ultra's Xpro 1200 garnered only a score of 6.5/10 (only a 5 in the testing section!); and that was a top of their line unit.
I noted a lot of power on the 5V circuit (32 amps) which tells me this is an older design or the rating and sticker may be entirely untrue . My Corsair AX850 has 25 amps on the 5V.
If you can see your way to that new psu, I would do it.
Something else to think about: According to Nvidia they suggest a psu of a minimum of 700watts with 46amps continuous power at 50C on the 12V rail(s). That only leaves you 4 amps any extra duty or equipment. The card can draw 365watts (30.4 amps) at full power (think gaming).
Good luck

 

[Yapsonark]

Vic40 gave you the correct information for how to get two 8 pin PCI-E connectors.
The 8 pin connector is for the 8 pin auxillary +12 Volt power to the CPU. That 4 pin connector is for boards and CPU's that only need a 4 pin aux. power to the CPU. Do not use either for the video card.
Vic40 pointed out that your video card originally came with adapters to adapt you 4 6 pin connections to 2 8 pin: If you can't find them I would give EVGA a call and tell them you lost them, they might send you some new ones. Otherwise you will have to purchase a couple (again, look at Vic40's post)
Like others, I would be very leery of using that PSU for anything heavy duty. I just looked at JohnnyGuru.com and Ultra's Xpro 1200 garnered only a score of 6.5/10 (only a 5 in the testing section!); and that was a top of their line unit.
I noted a lot of power on the 5V circuit (32 amps) which tells me this is an older design or the rating and sticker may be entirely untrue . My Corsair AX850 has 25 amps on the 5V.
If you can see your way to that new psu, I would do it.
Something else to think about: According to Nvidia they suggest a psu of a minimum of 700watts with 46amps continuous power at 50C on the 12V rail(s). That only leaves you 4 amps any extra duty or equipment. The card can draw 365watts (30.4 amps) at full power (think gaming).
Good luck

Screw it, ill just wait a few months, this PSU never did anything heavy duty in the past and I was planning to have the computer do alittle bit a gaming... best off to wait! Thanks!

 

[Dark Lord of Tech]

I wouldn't power any build with an ultra.

 

[Vic 40]

Screw it, ill just wait a few months, this PSU never did anything heavy duty in the past and I was planning to have the computer do alittle bit a gaming... best off to wait! Thanks!

That is the most sensible thing to do.


Knowing what i know now,considering you gave the wrong psu type,this is the right one,,would you indeed have to combine the four 6pin pcie connectors to two 8pin connectors like nostall said.Not that i recommend it.
It also seems that your psu has enough amps on the +12V rail to keep things going.The problem is i saw a review which they did about it,the +12V rail was very high (almost out of spec) and the 3.3V rail went out of spec there if i'm not mistaken (should be between +3.135 V to +3.465 V) although they didn't seem to notice it and really recommended the unit. Not worth recommending to me.