the dangers of molex to pci express converter

I wouldnt do it. I dont like using a adapter for a pci-e 6 to 8. I wouldnt use a molex personally. Depending on what molex you use, how the 12v rails are setup, you could overload one and either shut the pc down or fry the psu which might be a butthead and take some other parts with it.

I wouldnt do it. I dont like using a adapter for a pci-e 6 to 8. I wouldnt use a molex personally. Depending on what molex you use, how the 12v rails are setup, you could overload one and either shut the pc down or fry the psu which might be a butthead and take some other parts with it.

CreasianDevaili

I think he means 4-pin molex to 6-pin PCI-E. :|

If your power supply does not have the requisite connectors, there's very likely a reason it doesn't.RayvinAzn

Should work with the 4870.Im_DaBaller

thank you. thats what i wanted to hear. now are you pretty sure about this if i have two +12 rails totalling 28amps.

[QUOTE="Im_DaBaller"]Should work with the 4870.zxvb

thank you. thats what i wanted to hear. now are you pretty sure about this if i have two +12 rails totalling 28amps.

Again, should work.

[QUOTE="CreasianDevaili"]

I wouldnt do it. I dont like using a adapter for a pci-e 6 to 8. I wouldnt use a molex personally. Depending on what molex you use, how the 12v rails are setup, you could overload one and either shut the pc down or fry the psu which might be a butthead and take some other parts with it.

Im_DaBaller

I think he means 4-pin molex to 6-pin PCI-E. :|

Oh I know. I have a ST56ZF psu, 560w single 12v rail @ 38amps. When I was considering the 280gtx at release I was looking at the adapter to turn a 6-pin to 8-pin. I didnt like it too well overall however it felt fine I guess. That was just a comparison to the two.

For the 4 pin molex it should depend on the 12v rails. Say the 24pin atx and 8 pin cpu cables are on 12v1 and the load right now on his psu isnt distributed evenly. If he turns a molex on the 12v1 into a pci-e 6pin and pulls juice and pulls too much off that 12v1, when the pci-e 6pin he does have naturally is only off the 12v2 rail, he can trip the unit.

Thats what i mean. This isnt a single 12v rail, where he dosent have to make sure each rail isnt being overloaded. I am not saying he WILL. I am just saying since he has dual 12v rails that he needs to make sure if the rail without the native 6-pin pci-e wont be overloaded if he turns a molex off the rail into one that is going to pull 75w.

He should be fine. However there is no guarentee. If he comes back to this forum asking why his psu kicked off and wont turn back on or his mobo is dead I wont want to think that i told him that he should be fine and he wasnt.

The Corsair HX620 can handle 2 molex being adapted to pci-e 6pins for CF 4870. But that is a very nice psu with alot of amps. All this guy has said is that his has dual 12v rails with 28amps. To be safe he needs to explain how model so that we can verify that the psu can handle the load. Not all 12v rails are equal and he could very well experience a crapload of stability problems, and even cost him ALOT of money.

There should be a baseline of how far your willing to stretch your system. If you have to ask then he needs to supply us with the information we need to really let him know other than just guessing. Nothing against him cause I just dont want to see him screw himself over.

okay last poster i can supply my complete PSU info.

Here are the specs for the 500 Watt power supply in the computer:

*supports 115 or 230 Volts

*DC output is +3.3V(26A), +5V(45A), +12V(15A),+12V(17A), -12V(1A), -5V(0.8V), +5VSB(2.5A)

The +3.3 and 5 V have a combined wattage of 220. The two +12s combine for 336 watts. The -12 volts is 12 watts. The -5V is 4 watts. The +5VSB is 12.5 watts. Peak wattage is listed as 550.

The current is listed as 10/6 amps. Frequency is 60/50 Hz.

Also i have a system running:

4x1 gb of DDR2 667.
8800 gts 640 (which will be replaced...)
core 2 duo e6600
nforce 570 asus p5n (sigh)
x-fi sound card
pci video cooling fan with lights
320 gb hard drive 7200 rpm

all stock.

[QUOTE="Im_DaBaller"][QUOTE="CreasianDevaili"]

I wouldnt do it. I dont like using a adapter for a pci-e 6 to 8. I wouldnt use a molex personally. Depending on what molex you use, how the 12v rails are setup, you could overload one and either shut the pc down or fry the psu which might be a butthead and take some other parts with it.

CreasianDevaili

I think he means 4-pin molex to 6-pin PCI-E. :|

Oh I know. I have a ST56ZF psu, 560w single 12v rail @ 38amps. When I was considering the 280gtx at release I was looking at the adapter to turn a 6-pin to 8-pin. I didnt like it too well overall however it felt fine I guess. That was just a comparison to the two.

For the 4 pin molex it should depend on the 12v rails. Say the 24pin atx and 8 pin cpu cables are on 12v1 and the load right now on his psu isnt distributed evenly. If he turns a molex on the 12v1 into a pci-e 6pin and pulls juice and pulls too much off that 12v1, when the pci-e 6pin he does have naturally is only off the 12v2 rail, he can trip the unit.

Thats what i mean. This isnt a single 12v rail, where he dosent have to make sure each rail isnt being overloaded. I am not saying he WILL. I am just saying since he has dual 12v rails that he needs to make sure if the rail without the native 6-pin pci-e wont be overloaded if he turns a molex off the rail into one that is going to pull 75w.

He should be fine. However there is no guarentee. If he comes back to this forum asking why his psu kicked off and wont turn back on or his mobo is dead I wont want to think that i told him that he should be fine and he wasnt.

The Corsair HX620 can handle 2 molex being adapted to pci-e 6pins for CF 4870. But that is a very nice psu with alot of amps. All this guy has said is that his has dual 12v rails with 28amps. To be safe he needs to explain how model so that we can verify that the psu can handle the load. Not all 12v rails are equal and he could very well experience a crapload of stability problems, and even cost him ALOT of money.

There should be a baseline of how far your willing to stretch your system. If you have to ask then he needs to supply us with the information we need to really let him know other than just guessing. Nothing against him cause I just dont want to see him screw himself over.

You prove a good arguement.

In truth, I have nothing else to say. Only that I'm sure that he can still run the HD4870. Besides, I don't think he has the 12v1 rail connected to other things besides his CPU.

okay last poster i can supply my complete PSU info.

Here are the specs for the 500 Watt power supply in the computer:

*supports 115 or 230 Volts

*DC output is +3.3V(26A), +5V(45A), +12V(15A),+12V(17A), -12V(1A), -5V(0.8V), +5VSB(2.5A)

The +3.3 and 5 V have a combined wattage of 220. The two +12s combine for 336 watts. The -12 volts is 12 watts. The -5V is 4 watts. The +5VSB is 12.5 watts. Peak wattage is listed as 550.

The current is listed as 10/6 amps. Frequency is 60/50 Hz.

Also i have a system running:

4x1 gb of DDR2 667.
8800 gts 640 (which will be replaced...)
core 2 duo e6600
nforce 570 asus p5n (sigh)
x-fi sound card
pci video cooling fan with lights
320 gb hard drive 7200 rpm

all stock.

zxvb

Well, all he's got is the CPU, the MoBo, and that sound card. Seem good enough?

I'd say no. The guru of 3d recomends 32 amps. You could always throw the graphics card on a totally separate psu if you have an old one sitting around it might have enough watts with or without the amps (I'm not trying this one).mitosiskain

Well, looks like I didn't get enough info. Might as well get the 4850.

okay last poster i can supply my complete PSU info.

Here are the specs for the 500 Watt power supply in the computer:

*supports 115 or 230 Volts

*DC output is +3.3V(26A), +5V(45A), +12V(15A),+12V(17A), -12V(1A), -5V(0.8V), +5VSB(2.5A)

The +3.3 and 5 V have a combined wattage of 220. The two +12s combine for 336 watts. The -12 volts is 12 watts. The -5V is 4 watts. The +5VSB is 12.5 watts. Peak wattage is listed as 550.

The current is listed as 10/6 amps. Frequency is 60/50 Hz.

Also i have a system running:

4x1 gb of DDR2 667.
8800 gts 640 (which will be replaced...)
core 2 duo e6600
nforce 570 asus p5n (sigh)
x-fi sound card
pci video cooling fan with lights
320 gb hard drive 7200 rpm

all stock.

zxvb

wait i think i have 32amps i just counted wrong. can anyone confirm this?

My corsair HX620W only comes with 2 PCI-E connectors but I would feel safe powering 4 of them on this beast :P Cables would be annoying though.Staryoshi87

Contact the RAM GUY at Corsair support forums. They just sent me 2 6+2 (actually has one 6pin and one 6+2pin per cable) cables. Took a while for them to come, but I did not have to pay a dime, so I ain't complaining. I am pretty sure they come with the 620HX now.

Here are the specs for the 500 Watt power supply in the computer:

*supports 115 or 230 Volts

*DC output is +3.3V(26A), +5V(45A), +12V(15A),+12V(17A), -12V(1A), -5V(0.8V), +5VSB(2.5A)

The +3.3 and 5 V have a combined wattage of 220. The two +12s combine for 336 watts. The -12 volts is 12 watts. The -5V is 4 watts. The +5VSB is 12.5 watts. Peak wattage is listed as 550.

The current is listed as 10/6 amps. Frequency is 60/50 Hz.

how many amps do i have. im not sure how to count.

Watts equal volts multiplied by amps.

So 336 = a*12, or 336/12=a. Quick division means your power supply can only supply 28a on its +12v rail, like I told you earlier.

[QUOTE="Staryoshi87"]My corsair HX620W only comes with 2 PCI-E connectors but I would feel safe powering 4 of them on this beast :P Cables would be annoying though.ch5richards

Contact the RAM GUY at Corsair support forums. They just sent me 2 6+2 (actually has one 6pin and one 6+2pin per cable) cables. Took a while for them to come, but I did not have to pay a dime, so I ain't complaining. I am pretty sure they come with the 620HX now.

Thanks for the tip. I'm probably just going to get a revised HD4870 and be happy with that for another year or two ;)