Question Can this Psu power a RX580 with 2molex-8pins ?

[Ashigaru441]

hello, ihave acheap psu cooler master 230v 400w and does not come with 8 pins connecter so i want to use 2molex-8pin connecter does it work ?
cpu : i5 3470
ram : 10gb 2+8
mobo : h61

PSU power spec:
+3.3v 17A +5V 16A
+12V 30A -12V 0.3A +5VSB 2.5A

 

[DavidM012]

If you were running a pentium on Windows Vista.

PSU Tier List

Is it a Cooler Master Elite B2? Tier E - Potentially dangerous in multiple scenarios. No because of that. No because no Pci-e connectors. Chuck. In any scenario the wattage is too low to run a discrete gpu.

Anyway you probably won't have any success 1080p gaming on it cpu is way old. 720p maybe or sub-hd though it should do internet and office OK.

 

[Ashigaru441]

If you were running a pentium on Windows Vista.

PSU Tier List

Is it a Cooler Master Elite B2? Tier E - Potentially dangerous in multiple scenarios. No because of that. No because no Pci-e connectors. Chuck. In any scenario the wattage is too low to run a discrete gpu.

Anyway you probably won't have any success 1080p gaming on it cpu is way old. 720p maybe or sub-hd though it should do internet and office OK.

i just want to test the gpu and not for gaming uses

 

[DavidM012]

nope it doesn't work like that. The peak demand of the system matters your peak usage does not. 'Testing' it is really 'testing' to see whether the psu pops, capacitors explode, wires melt, short circuit or fry mobo.

 

[Mr. Smith]

Nope. As AMD recommends a 500-watt supply for this GPU.

 

[Karadjgne]

Blah.
None of the above. Well a couple of points are accurate, but that's it.

There's a big difference in 'testing' as such, so it all depends on exactly what level of testing you plan on doing. If you just plan on plugging it in to see if you have a picture, then yes, 2x molex will work because a molex can carry upto 54w @ 12v. That's enough to get boot and into windows.

On the other hand, that's not really testing the card, that's only testing its basic functionality. That does nothing to stress the VRM's or vram to see if you get artifacts, whether there's an issue with higher power draws, whether it'll hit its boost levels etc. For that, your psu is extremely underpowered and if you try it, you'll melt the molex in seconds.

When you buy a car, you test drive it to see its acceleration, braking, how the tranny feels, does it shift right, drive right, steer right, etc. You don't just start the car on the lot and say 'it's good'.

Recommended wattage, correct connectors, big enough psu for the job, those are all taken into account about Full functionality of the card, stressed out, gaming, maximum potential and not over draw the psu and cause a shutdown. Not basic 'does it have a picture' usage.

 

[Ashigaru441]

Blah.
None of the above. Well a couple of points are accurate, but that's it.

There's a big difference in 'testing' as such, so it all depends on exactly what level of testing you plan on doing. If you just plan on plugging it in to see if you have a picture, then yes, 2x molex will work because a molex can carry upto 54w @ 12v. That's enough to get boot and into windows.

On the other hand, that's not really testing the card, that's only testing its basic functionality. That does nothing to stress the VRM's or vram to see if you get artifacts, whether there's an issue with higher power draws, whether it'll hit its boost levels etc. For that, your psu is extremely underpowered and if you try it, you'll melt the molex in seconds.

When you buy a car, you test drive it to see its acceleration, braking, how the tranny feels, does it shift right, drive right, steer right, etc. You don't just start the car on the lot and say 'it's good'.

Recommended wattage, correct connectors, big enough psu for the job, those are all taken into account about Full functionality of the card, stressed out, gaming, maximum potential and not over draw the psu and cause a shutdown. Not basic 'does it have a picture' usage.

Does a molex takes power from 12V rails ? if it is right the max power draw of the rx580 is 185w + 80w of the cpu doest this sounds enough ? because the 12v rail can draw 360w , correct me pls if am wrong

 

[DavidM012]

A dangerous test that could rek your hardware and can't actually prove if the thing is working is pointless. There's no reason to do it. That ting is probably old and it's going to go wrong. Why could possibly you need it so bad now? Wait 'til after it lights on fire. If you want to test GPUs are working properly use an appropriate power supply for it. PSU Tier List .

 

[Joseph_138]

If your PSU doesn't have the required power connectors, using some power cable hack that you found on the internet, is generally not going to be a good idea. It's better to limit yourself to a card that doesn't require external power, or upgrading your power supply. If you're using a proprietary system, like an old Dell Vostro, or some such thing, then you're going to be out of luck, because those machines aren't designed with high power video cards in mind. The PSU's in those machines do the job they were meant to do, and nothing more. 250-350W PSU's, that are not interchangeable with a standard ATX, are commonly found in such machines, and can't power a modern video card, even if they had the required connectors.