Zotac 1070 AMP needs 2x8 pin, PSU only has 8+6 pin

[shadowles5]

My zotac 1070 needs a 2x8 pin, my EVGA 550w supernova PSU only came with a 6+8 pin, would it work without the extra 2 pins?

The PSU also has a VGA1 and VGA2 power sockets, i could use a different 8 to 8 pin wire and plug it into VGA2, would that work?

Thanks.

 

[greens]

No it needs 8+8

Yeah you can TOTALLY use the other plug on the PSU. That is your bets bet!

12V power all comes from the same place, it doesn't really matter where you get it from plug wise.

 

[shadowles5]

No it needs 8+8

Yeah you can TOTALLY use the other plug on the PSU. That is your bets bet!

12V power all comes from the same place, it doesn't really matter where you get it from plug wise.

Thanks man! i was using the 6+8 pin and my fps was pretty mediocre, i tried the second wire my fps literally quintupled.

 

[JackNaylorPE]

The base 1070requires only a 500 watt PSU and a single * pin power connector. Cards tested by TPU have shown the ability to pull 220 watts but the Zotac AMP was not among those tested. With 75 watts from the PCIE slot, that leaves 145 to be supplied by the cables, and a single 8 pin connector will supply 150. And while I wouldn't argue against a 6 + 8 pin connector, the inclusion of an 8 + 8 is just marketing to make the card appear more powerful.

What Supernova are we talking about here.... It's kinda like asking what's the ignition timing on my Blue Chevy Impala

-The G2 Supernova provided 3 PCI cables: 2 x 8-Pin (6+2), 1 x 6-Pin PCIE .

So you should have more cables than you need if it's the G2

-The GS 550 has 4x 8pin (6+2), again more than you need

-The G3 500 provides 3 x 8pin (6+2) PCIE. more than you need

It must be said that the following statement, as written is incorrect.

"12V power all comes from the same place, it doesn't really matter where you get it from plug wise."

More correctly said ...

"On a single rail PSU , 12V power all comes from the same place, it doesn't really matter where you get it from plug wise."


Some PSUs have multiple rails and the individual loading on each rail must be below that rail's rating., There are many who claim advantages of single rail versus multi rail designs but other than the above, the claims do not hold up to scrutiny. And many PSUs advertised as multi-rail are not so it can be confusing.

http://www.jonnyguru.com/forums/showthread.php?t=3990

In most cases, multiple +12V rails are actually just a single +12V source just split up into multiple +12V outputs each with a limited output capability.

This is why splitters are always a bad idea. If the PSU is in fact multi rail, rather than just being advertised as such, you CAN overload one of the rails ... On a multi rail design, you might have say 15 watts on each rail. As designed, each PCI E cable will be on a separate rail .

An 8 pin could draw 150 watts or 12.50 watts on one rail
An 6 pin could draw 75 watts or 6.26 watts on one rail

Put them both on the same rail by using splitters or auxilliary connectors and you will soon be muttering "Houston we have a problem".

 

[Math Geek]

the EVGA FTW cards pulled 275w at torture load!! the Zotac is about 250w at gaming load. pulls a bit more than a reference but not as much as some custom 1080's can pull.

the 1080ti will push this closer to 300w and dual 8 pins will likely be standard for most of the custom cards.

 

[JackNaylorPE]

I'd agree with that .... but which model ? The 1070 SC managed just 181 watts

A Zotac Amp Extreme 1080 will pull 299
A Zotac Amp 1080 will pull 299

For the 1070 under the 2nd BIOS it's capable of hitting 122% of TDP and the TDP on the 1080 FTW is 215 watts so 260 is certainly possible. But still....

260 watts = 75 from PCI Slot = 185 watts
One 8 pin provides 150 watts

185 - 150 leaves just 35 watts for the 6 pin 75 watt cable ... making the 2nd connector 8 pin still has no real purpose outside of marketing.

 

[JackNaylorPE]

Thanks man! i was using the 6+8 pin and my fps was pretty mediocre, i tried the second wire my fps literally quintupled.

Every G2, G3, GS Supernova comes with all the necessary PCI-E cables it needs ... using kludge auxilliary cables / splitters is a bad idea.

 

[Susquehannock]

An 8 pin can draw much as the rail/s provide.
A 6 pin can draw much as the rail/s provide.

^^ Fixed it for you 😉