Mephusto
My 1000 watt PSU just died on me and I have to get a new PSU on a very tight budget. I only need it to last a few months til I can get the money to get a better one. I was wondering if a Seasonic 650 watt PSU would work. I have a slightly over clocked I5-3570k @ 4.2Ghz ; 1.175volts, 2 HDDs, dvdr/rw, fan controller, and 6 fans with led. I only have $100 total for the PSU+shipping+tax. Thanks for any insight you all have.

Mephusto
That link didn't work for me. And that's the reason I was thinking Seasonic, because I know they have a great reputation.

HeavyHemi

Mephusto
My 1000 watt PSU just died on me and I have to get a new PSU on a very tight budget. I only need it to last a few months til I can get the money to get a better one. I was wondering if a Seasonic 650 watt PSU would work. I have a slightly over clocked I5-3570k @ 4.2Ghz ; 1.175volts, 2 HDDs, dvdr/rw, fan controller, and 6 fans with led. I only have $100 total for the PSU+shipping+tax. Thanks for any insight you all have.

Why not just get a decent one an be done with it? If you're not planning on going SLI, this one should do you fine...
http://www.amazon.com/EVG...;keywords=power+supply
Total with free standard shipping is a bit over $80.

ganzosrevenge

Rigbuilder12
No, 650watt is not enough for his
cpu, drives, fans, gpu, etc. 750 watt minimum for a 780ti. Remember overclocking will use more wattage. Each Ssd/Hd drive uses 25 watts, each one of your 6 fans is 15 watts total of 90 watts. The 780ti uses almost 400 watts oc'ed. Then your cpu oc'ed is 110-120 watts. Always go bigger than what you need so adding on later doesnt cause you to have to buy a larger psu. You also never want to stress a psu by utilizing every watt it can possibly makes, always leave 50-100 watts extra, this way the psu isn't stressed and will last longer. These are called best practices.

 
OK, you're WAY off.
 
a) SSDs at MOST, use 4 to 6 watts unless they are SLC SSDs with large internal capacitors for power redundancy - and even then, those SSDs (ie: intel 730 / S3500 / S3700), only use such levels of energy at FULL load.  HDDs can go to 15 to 20 watts, but SSDs never reach such high levels... 
 
b) Unless the OP is running delta fans, or 4250rpm Gentle Typhoons (or something to that effect), there are VERY few fans that hit 15w on their own; and if so, they're powered by a molex and hooked to a fan-controller for RPM information.  If the OP is using 90w for six fans, his / her fans are extremely loud and moving an UNBELIEVABLE amount of air.  At most, a good case fan should use no more than 0.2A to 0.3A (or 2.4 to 3.6 Watts).  This means that even if the OP has the six fans you stated, that at MOST, the fans are pulling 2 Amps off of the 12V rail, and that would be 24w.  My rig has 2 intakes and one exhausts, and they total about 0.6 Amps altogether (7.2w).  Making assumptions that the OP has enormous fans, is only fear-mongering.  If they have LEDs, then MAYBE that amount goes to 3 Amps (36w altogether), but that's still a far cry from the 90w you are proposing.
 
c) The 780 TI's TDP is 250w, per NVidia (assuming reference specifications, since the OP hasn't stated that it's a classified or kingpin (both of which are completely non-reference GPUs with higher power requirements), nor has he / she specified if it has an unlocked BIOS, I'm going to assume that it's a vanilla 780 Ti that cannot go beyond 106% in power target and 1.212v on the overvolting.  At the absolute MOST, the GPU would use about 265w to 280w of the available power (assuming it's not a classified / KPE and it has the stock BIOS).  If it has double-BIOS, then that becomes 115%, and most likely about 300w at the very most, not the 400w.  Again, this is due to power constraints and NVidia green light - among other things. 
 
d) I will agree that the CPU is probably 110w, and I will agree with the idea of leaving leeway to avoid stressing the PSU, but I'll add another reason for having extra wattage.  Capacitors and other components within a PSU do age, depending on factors such as 24/7 usage, how many watts the PSU must provide, etc.,  Granted, these really only come into play in high-wattage situations, or in situations where a component has a very high power demand (ie: my 780 Ti Classy / RM850.... swapped the RM850 for a Seasonic 1050w Platinum for better power delivery, higher quality components, etc.,), but nonetheless, that's a reality of these things.  Additionally, that's 110w at MAXIMUM power (ie: running linpack, OCCT, or anything that demands 100% of the CPU's resources at all cores / threads).  It's also not going to hit the limit of the 8-pin PSU connector, which is about 150w.  (This is why ultra-high-end gaming boards may have a supplemental 4-pin (ie: Asus Maximus VI Formula), or even a supplemental 8-pin connector (ie: Asus X99-WS, eVGA X99 Classified), in order to either supply ultra-high-levels of power to the CPU, or to provide the cleanest possible power by spreading power flow over multiple connections). 
 
That being said, so long as the PSU is a 650w PSU that can provide a legitimate 650w across its 12v Rail (ie: 12v and 54A MINIMUM), I'd feel comfortable with a good seasonic 650w PSU.  Now, if the 780 Ti in question is a Classified or KingPin, then my recommendation goes up significantly.

Rigbuilder12

ganzosrevenge

Rigbuilder12
No, 650watt is not enough for his
cpu, drives, fans, gpu, etc. 750 watt minimum for a 780ti. Remember overclocking will use more wattage. Each Ssd/Hd drive uses 25 watts, each one of your 6 fans is 15 watts total of 90 watts. The 780ti uses almost 400 watts oc'ed. Then your cpu oc'ed is 110-120 watts. Always go bigger than what you need so adding on later doesnt cause you to have to buy a larger psu. You also never want to stress a psu by utilizing every watt it can possibly makes, always leave 50-100 watts extra, this way the psu isn't stressed and will last longer. These are called best practices.

OK, you're WAY off.

a) SSDs at MOST, use 4 to 6 watts unless they are SLC SSDs with large internal capacitors for power redundancy - and even then, those SSDs (ie: intel 730 / S3500 / S3700), only use such levels of energy at FULL load.  HDDs can go to 15 to 20 watts, but SSDs never reach such high levels... 

b) Unless the OP is running delta fans, or 4250rpm Gentle Typhoons (or something to that effect), there are VERY few fans that hit 15w on their own; and if so, they're powered by a molex and hooked to a fan-controller for RPM information.  If the OP is using 90w for six fans, his / her fans are extremely loud and moving an UNBELIEVABLE amount of air.  At most, a good case fan should use no more than 0.2A to 0.3A (or 2.4 to 3.6 Watts).  This means that even if the OP has the six fans you stated, that at MOST, the fans are pulling 2 Amps off of the 12V rail, and that would be 24w.  My rig has 2 intakes and one exhausts, and they total about 0.6 Amps altogether (7.2w).  Making assumptions that the OP has enormous fans, is only fear-mongering.  If they have LEDs, then MAYBE that amount goes to 3 Amps (36w altogether), but that's still a far cry from the 90w you are proposing.

c) The 780 TI's TDP is 250w, per NVidia (assuming reference specifications, since the OP hasn't stated that it's a classified or kingpin (both of which are completely non-reference GPUs with higher power requirements), nor has he / she specified if it has an unlocked BIOS, I'm going to assume that it's a vanilla 780 Ti that cannot go beyond 106% in power target and 1.212v on the overvolting.  At the absolute MOST, the GPU would use about 265w to 280w of the available power (assuming it's not a classified / KPE and it has the stock BIOS).  If it has double-BIOS, then that becomes 115%, and most likely about 300w at the very most, not the 400w.  Again, this is due to power constraints and NVidia green light - among other things. 

d) I will agree that the CPU is probably 110w, and I will agree with the idea of leaving leeway to avoid stressing the PSU, but I'll add another reason for having extra wattage.  Capacitors and other components within a PSU do age, depending on factors such as 24/7 usage, how many watts the PSU must provide, etc.,  Granted, these really only come into play in high-wattage situations, or in situations where a component has a very high power demand (ie: my 780 Ti Classy / RM850.... swapped the RM850 for a Seasonic 1050w Platinum for better power delivery, higher quality components, etc.,), but nonetheless, that's a reality of these things.  Additionally, that's 110w at MAXIMUM power (ie: running linpack, OCCT, or anything that demands 100% of the CPU's resources at all cores / threads).  It's also not going to hit the limit of the 8-pin PSU connector, which is about 150w.  (This is why ultra-high-end gaming boards may have a supplemental 4-pin (ie: Asus Maximus VI Formula), or even a supplemental 8-pin connector (ie: Asus X99-WS, eVGA X99 Classified), in order to either supply ultra-high-levels of power to the CPU, or to provide the cleanest possible power by spreading power flow over multiple connections). 

That being said, so long as the PSU is a 650w PSU that can provide a legitimate 650w across its 12v Rail (ie: 12v and 54A MINIMUM), I'd feel comfortable with a good seasonic 650w PSU.  Now, if the 780 Ti in question is a Classified or KingPin, then my recommendation goes up significantly.

@Ganzorevenge..... You are a idiot^.......his cpu and gpu alone use 400 watts........ I don't know what kind of fans you use.... but my 120mm 2k rpm/70Cfm LED's uses 15 watts EACH, (hence why psu calculators use 15 watts as base for fans. SSD drives use at least 25 watts if not more(again this is what every psu calculator uses as base), both my Intel 330/520 Series SSD's uses 27 watts at peak....... I don't know why you would calculate exact wattage, as you would never buy a psu for the exact amount of power draw......only a complete moron would do so.

• 850 mW (TYP)
• Idle: 600 mW (TYP)

ganzosrevenge

HeavyHemi

Rigbuilder12

ganzosrevenge

Rigbuilder12
No, 650watt is not enough for his
cpu, drives, fans, gpu, etc. 750 watt minimum for a 780ti. Remember overclocking will use more wattage. Each Ssd/Hd drive uses 25 watts, each one of your 6 fans is 15 watts total of 90 watts. The 780ti uses almost 400 watts oc'ed. Then your cpu oc'ed is 110-120 watts. Always go bigger than what you need so adding on later doesnt cause you to have to buy a larger psu. You also never want to stress a psu by utilizing every watt it can possibly makes, always leave 50-100 watts extra, this way the psu isn't stressed and will last longer. These are called best practices.

OK, you're WAY off.

a) SSDs at MOST, use 4 to 6 watts unless they are SLC SSDs with large internal capacitors for power redundancy - and even then, those SSDs (ie: intel 730 / S3500 / S3700), only use such levels of energy at FULL load.  HDDs can go to 15 to 20 watts, but SSDs never reach such high levels... 

b) Unless the OP is running delta fans, or 4250rpm Gentle Typhoons (or something to that effect), there are VERY few fans that hit 15w on their own; and if so, they're powered by a molex and hooked to a fan-controller for RPM information.  If the OP is using 90w for six fans, his / her fans are extremely loud and moving an UNBELIEVABLE amount of air.  At most, a good case fan should use no more than 0.2A to 0.3A (or 2.4 to 3.6 Watts).  This means that even if the OP has the six fans you stated, that at MOST, the fans are pulling 2 Amps off of the 12V rail, and that would be 24w.  My rig has 2 intakes and one exhausts, and they total about 0.6 Amps altogether (7.2w).  Making assumptions that the OP has enormous fans, is only fear-mongering.  If they have LEDs, then MAYBE that amount goes to 3 Amps (36w altogether), but that's still a far cry from the 90w you are proposing.

c) The 780 TI's TDP is 250w, per NVidia (assuming reference specifications, since the OP hasn't stated that it's a classified or kingpin (both of which are completely non-reference GPUs with higher power requirements), nor has he / she specified if it has an unlocked BIOS, I'm going to assume that it's a vanilla 780 Ti that cannot go beyond 106% in power target and 1.212v on the overvolting.  At the absolute MOST, the GPU would use about 265w to 280w of the available power (assuming it's not a classified / KPE and it has the stock BIOS).  If it has double-BIOS, then that becomes 115%, and most likely about 300w at the very most, not the 400w.  Again, this is due to power constraints and NVidia green light - among other things. 

d) I will agree that the CPU is probably 110w, and I will agree with the idea of leaving leeway to avoid stressing the PSU, but I'll add another reason for having extra wattage.  Capacitors and other components within a PSU do age, depending on factors such as 24/7 usage, how many watts the PSU must provide, etc.,  Granted, these really only come into play in high-wattage situations, or in situations where a component has a very high power demand (ie: my 780 Ti Classy / RM850.... swapped the RM850 for a Seasonic 1050w Platinum for better power delivery, higher quality components, etc.,), but nonetheless, that's a reality of these things.  Additionally, that's 110w at MAXIMUM power (ie: running linpack, OCCT, or anything that demands 100% of the CPU's resources at all cores / threads).  It's also not going to hit the limit of the 8-pin PSU connector, which is about 150w.  (This is why ultra-high-end gaming boards may have a supplemental 4-pin (ie: Asus Maximus VI Formula), or even a supplemental 8-pin connector (ie: Asus X99-WS, eVGA X99 Classified), in order to either supply ultra-high-levels of power to the CPU, or to provide the cleanest possible power by spreading power flow over multiple connections). 

That being said, so long as the PSU is a 650w PSU that can provide a legitimate 650w across its 12v Rail (ie: 12v and 54A MINIMUM), I'd feel comfortable with a good seasonic 650w PSU.  Now, if the 780 Ti in question is a Classified or KingPin, then my recommendation goes up significantly.

@Ganzorevenge..... You are a idiot^.......his cpu and gpu alone use 400 watts........ I don't know what kind of fans you use.... but my 120mm 2k rpm/70Cfm LED's uses 15 watts EACH, (hence why psu calculators use 15 watts as base for fans. SSD drives use at least 25 watts if not more(again this is what every psu calculator uses as base), both my Intel 330/520 Series SSD's uses 27 watts at peak....... I don't know why you would calculate exact wattage, as you would never buy a psu for the exact amount of power draw......only a complete moron would do so.

Actually, he is quite correct and you are overestimating the power draw. I'd suggest you remove all the name calling as along with being wrong, you come off as a bit immature. Standard 120X25mm LED case fans draw from 0.15 to ~0.6 amps at 12v.  So lets exaggerate a bit more and make it 8 watts.   Your SSD is listed by intel as using only a tiny fraction of the power you have listed. (Active (BAPCo MobileMark* 2007 Workload:) 195 mW) Perhaps you're confused by decimal points?

I'm Correct or Rigbuilder's Correct (I'm confused).

Mephusto
Ok guys. I guess I left out that it is a 780 TI Dual Classified but not a crazy overclock nor is my 4.2 a huge overclock for my cpu. I ended up just getting a Corsair 750w that was luckily on sale. Thanks for all the information. :) 

HeavyHemi

ganzosrevenge

Mephusto
Ok guys. I guess I left out that it is a 780 TI Dual Classified but not a crazy overclock nor is my 4.2 a huge overclock for my cpu. I ended up just getting a Corsair 750w that was luckily on sale. Thanks for all the information. :) 

That little detail is significant.  The 780 Ti Classified is not-at-all reference.  It's 2 8-pins (375w TDP), and it's one of those cards that if you BIOS-mod it, can easily blow up PSUs on its own.  I had an 850w corsair (an RM850), and I wound up replacing it with a 1050w Seasonic because the RM850 could not provide enough power at stock to prevent the card from going crazy.  At load, with stock clocks, I was getting 11.75 to 11.8v. With the new PSU, I'm getting 12.05v - rock solid.  As long as you don't try overvolting your GPU, or setting the power target above about 105%, you should be fine.  If you see a 12v rating in GPU-z below about 11.9v, or you hear coil whine, then look into a stronger PSU.  (Mine was screaming.)  
 
Thankfully you didn't say you had a kingpin... because that's 450w on its own (2x8pin and a 6pin).

Eh....while it's possible to draw more power with the GTX 780 TI Dual Classified, it still has the same power draw limits at stock...
Minimum of a 600 Watt power supply.
(Minimum recommended power supply with +12 Volt current rating of 42 Amps.)
Two available 8 pin PCI-E power connectors
Total Power Draw : 250 Watts
That said, I don't disagree with getting a larger PSU. I was trying to stay within the parameters of the original post. After all, I'm running an AX1200 because I appreciate cool and quiet power and plenty of overhead for those few times I like to see if I can burn shizzle up. I have managed, with overclocks and running folding clients on all three GPU's and 12 folding clients on the CPU, to pull ~1100 watts from the PSU or ~1200 watts from the wall.