Hello I'm buIlding my first PC and I have ran into a problem.I have already bought the GTX 580 as my GPU and now I'm getting a PSU and the one I ordered has only one 6 pin connector and GTX 580 needs (at least I think it does) both 6 pin and 8 connector because its asking for 244 W and I was wondering how can I solve this, Btw my PSU has 2x Molex connector and my friend told me i could buy an adapter from a Molex to 8 pin and I'm asking would that work and if it wouldn't is there anything else I can do or I have to buy a different PSU. Thanks!
-
T-Mobile Home Internet: Revisiting 5G connectivity for the home after two years
Connecting power supply to gpu
- Thread starter Marko_63
- Start date
Solution
ksham
Splendid
- Mar 29, 2013
- 8,398
- 1
- 29,960
I recommend buying a new PSU because if the PSU doesn't come with the connectors, then there's a good chance it's not made to support it. You may buy a molex to 8-pin adapter and it may work, but I would not risk doing that and I don't recommend doing that.
- Dec 26, 2012
- 30,742
- 4,559
- 142,790
A psu with only 1x 6pin means the manufacturer has absolutely no faith in the psus ability to power a gpu that requires a 6pin and 6+2pin (pin) connector. Basically if it doesn't have the right connections, it's not intended for that purpose. Cancel the order and purchase instead something of better quality in the 550w to 650w range that does have 2x 6+2pin at a minimum.
goldstone77
Distinguished
- Aug 22, 2012
- 2,245
- 14
- 19,965
"The PCI Express 2.0 specification released in January 2007 added an 8 pin PCI Express power cable. It's just an 8 pin version of the 6 Pin PCI Express power cable. Both are primarily used to provide supplemental power to video cards. The older 6 pin version officially provides a maximum of 75 watts (although unofficially it can usually provide much more) whereas the new 8 pin version provides a maximum of 150 watts."
"If you don't have an 8 pin 12 volt cable then you can use the adapter shown above. It converts a couple of 4 pin peripheral power cables into an 8 pin 12 volt cable. If you use one of these adapters then be sure to plug the 4 pin peripheral connectors into separate cables coming from the power supply. If you plug them both into the same power supply cable then you are drawing all the power of the 8 pin 12 volt connector through a single 18 gauge wire. You can often get away with that but there's no reason to do it."
http://www.playtool.com/pages/psuconnectors/connectors.html#eps8
I've used a 2 Molex to a 6 pin PCI-E adapter in the past for years with no issues. You would want to make sure that you plug the 2 Molex into 2 individual cables coming directly from the PSU, and none of the other connectors on those cables are plugged into anything else. Ultimately, I would advise against doing this, and getting a power supply designed for your needs.
Edit: What is your system configuration?
"If you don't have an 8 pin 12 volt cable then you can use the adapter shown above. It converts a couple of 4 pin peripheral power cables into an 8 pin 12 volt cable. If you use one of these adapters then be sure to plug the 4 pin peripheral connectors into separate cables coming from the power supply. If you plug them both into the same power supply cable then you are drawing all the power of the 8 pin 12 volt connector through a single 18 gauge wire. You can often get away with that but there's no reason to do it."
http://www.playtool.com/pages/psuconnectors/connectors.html#eps8
I've used a 2 Molex to a 6 pin PCI-E adapter in the past for years with no issues. You would want to make sure that you plug the 2 Molex into 2 individual cables coming directly from the PSU, and none of the other connectors on those cables are plugged into anything else. Ultimately, I would advise against doing this, and getting a power supply designed for your needs.
Edit: What is your system configuration?
- Dec 26, 2012
- 30,742
- 4,559
- 142,790
18ga x 12inch length is good for @18A 12vDC.(216w). Normally. A standard 4pin molex is good for @11A (132w) 12vDC. So technically adapters should work. However, that's from the pc. The adapters themselves are rarely 18ga, normally 20-22ga, so that 18A possible drops to around 7A per wire, which is still OK as there's 2-3 wires per pcie.
Now comes the big dilemma. Those adapters are churned out by the millions every year and may or may not be up to any kind of standards, so while they are supposed to be rated at certain ability often they are not as corners are cut, substandard metals and alloys used in the pins, imprecise connections that lead to massive heat buildup, thinner plastic that's not heat rated for the application etc.
Can you power a 150w 8pin pcie from 2x molex? Sure. Should you? Not a chance.
And that's not counting the fact that the psu only comes with a single 6pin, a quality psu with just 1 6pin is usually rated at @400-430w. There are psus rated as high as 700w that have just a single 6pin, telling me they have no faith in the 12v rail(s) and are mostly old, cheap designs centered around high amperage on the 3.3v and 5v+ minor rails.
You are trying to put a $300+ video card on a $20 psu. That's going to be a short lived disaster.
Now comes the big dilemma. Those adapters are churned out by the millions every year and may or may not be up to any kind of standards, so while they are supposed to be rated at certain ability often they are not as corners are cut, substandard metals and alloys used in the pins, imprecise connections that lead to massive heat buildup, thinner plastic that's not heat rated for the application etc.
Can you power a 150w 8pin pcie from 2x molex? Sure. Should you? Not a chance.
And that's not counting the fact that the psu only comes with a single 6pin, a quality psu with just 1 6pin is usually rated at @400-430w. There are psus rated as high as 700w that have just a single 6pin, telling me they have no faith in the 12v rail(s) and are mostly old, cheap designs centered around high amperage on the 3.3v and 5v+ minor rails.
You are trying to put a $300+ video card on a $20 psu. That's going to be a short lived disaster.
- Dec 26, 2012
- 30,742
- 4,559
- 142,790
Not to say I didn't warn you about bad powersupplies and very cheap designs, the gtx580 requires a psu capable of 40A on the 12v rail and @600w. The Blueberry PSB560 has a 12v rail of just 16A. It will not work, not even for windows usage. That psu will pop almost certainly the moment you turn it on, if not, then very shortly thereafter, guaranteed to blow if you even attempt to run a game. Be very surprised if it doesn't damage either the gpu, motherboard or cpu, but stands a good chance of ruining something for sure.
As I said, $300 gpu, $20 psu. If that.
Cancel the order and shop for the correct psu for the size gpu.
As I said, $300 gpu, $20 psu. If that.
Cancel the order and shop for the correct psu for the size gpu.
- Dec 26, 2012
- 30,742
- 4,559
- 142,790
Yes, and no.
I'm trying to help you, not spend your money so here goes. The psu is the single most important part of any pc. Absolutely everything is connected to it or uses it for power. A bad psu or cheaply designed psu, will have bad outputs. Instead of good, clean power, it'll be subject to spikes, low outputs, overheating etc all of which can and will eventually damage the pc.
Being in the Germany? I'm going to assume you know what ice skates are. You'll understand that the blades need to be nice and straight, clean edges and smooth. That's a good psu. A bad psu is skates with jagged edges, chips and warps in the blades. Will it work? Yes, it'll fit on your feet and you'll be able to skate, not very well, you'll tear up the ice, trip, use a lot more energy just trying to skate on junk ice skates.
So yes, technically that LC 600w with 40A (closer to 36A) will work, but realistically you are trying to justify not spending money on a good set of ice skates when a cheaper set will 'work'.
Power Supply: SeaSonic - S12II 620W 80+ Bronze Certified ATX Power Supply (€64.67 @ Mindfactory)
This will work, this will not damage your pc, this will last for years, this is one of the best psu's designed in its generation, this is still a very good psu. This is built by Seasonic, who builds psus that are considered the standard to try and beat. This is worth every penny.
I'm trying to help you, not spend your money so here goes. The psu is the single most important part of any pc. Absolutely everything is connected to it or uses it for power. A bad psu or cheaply designed psu, will have bad outputs. Instead of good, clean power, it'll be subject to spikes, low outputs, overheating etc all of which can and will eventually damage the pc.
Being in the Germany? I'm going to assume you know what ice skates are. You'll understand that the blades need to be nice and straight, clean edges and smooth. That's a good psu. A bad psu is skates with jagged edges, chips and warps in the blades. Will it work? Yes, it'll fit on your feet and you'll be able to skate, not very well, you'll tear up the ice, trip, use a lot more energy just trying to skate on junk ice skates.
So yes, technically that LC 600w with 40A (closer to 36A) will work, but realistically you are trying to justify not spending money on a good set of ice skates when a cheaper set will 'work'.
Power Supply: SeaSonic - S12II 620W 80+ Bronze Certified ATX Power Supply (€64.67 @ Mindfactory)
This will work, this will not damage your pc, this will last for years, this is one of the best psu's designed in its generation, this is still a very good psu. This is built by Seasonic, who builds psus that are considered the standard to try and beat. This is worth every penny.
What about these two PSU's
https://www.sharkoon.com/product/1681/WPMBronze#specs (the 600W version)
and this one
http://www.xfxforce.com/en-us/products/ts-series-bronze-full-wired/ts-series-550w-psu-p1-550s-gren
- Dec 26, 2012
- 30,742
- 4,559
- 142,790
12v1 and 12v2 add together, realistically it's a single rail psu with 48A, just listed as a dual rail with 24A on each rail.
Almost all XFX psus are built by Seasonic, very good reputation. With the exception of the XFX-XT, which are not Seasonic OEM, but a subsidiary of Seasonic called Hydance, which tailor to low-end psu markets. Basically it's not that reliable, regardless of possible pedigree. The Sharkoon? Umm no, basically the same quality of build as the LC.
PCPartPicker Try this site, set it for Deutschland. It'll give you a very good choice of psus, you can set it for wattage etc and since it uses multiple vendors, you'll get the best possible price. Better by far than websearching.
Almost all XFX psus are built by Seasonic, very good reputation. With the exception of the XFX-XT, which are not Seasonic OEM, but a subsidiary of Seasonic called Hydance, which tailor to low-end psu markets. Basically it's not that reliable, regardless of possible pedigree. The Sharkoon? Umm no, basically the same quality of build as the LC.
PCPartPicker Try this site, set it for Deutschland. It'll give you a very good choice of psus, you can set it for wattage etc and since it uses multiple vendors, you'll get the best possible price. Better by far than websearching.
As I am limited not only with budget, but I can order only from one site because im in a shitty country Im probably gonna go with this PSU https://www.newegg.com/Product/Product.aspx?Item=N82E16817151096
P.S Im not taking it from the newegg...
- Dec 26, 2012
- 30,742
- 4,559
- 142,790
The SeaSonic S12-II 620w is a better psu. By its very name, the Masterwatt Lite is a chopped down version of its cousin, the Masterwatt Maker, the lite version is only 80+, so claims of high efficiency are sceptible, it fails ATX standards like hold up time, it's pretty much bottom of the barrel psu, which explains the price.
TRENDING THREADS
-
-
News Firefox user loses 7,470 opened tabs saved over two years after they can’t restore browsing session- Started by Admin
- Replies: 44
-
Question Why do so many pre builds use a full size ATX case with a micro ATX motherboard?- Started by Quad3001
- Replies: 3
-
-
Question Systems not detecting keyboard/mouse on startup
- Started by Jarhead0331
- Replies: 4
-
Question Uninstalling GPU drivers when the CPU has no integrated graphics ?- Started by Unejsi
- Replies: 3
Facebook
Twitter
Instagram