New psu help

[skiberdee]

im looking for a new psu but dont know what wattage to get

fx8120
antec kuhler 920
16gb ram
2 hdd
5 case fans
7970 vapour x
on the box of my 7970 its says minimum 750w can anyone give me some suggestions max willing to spend £150
thanks

 

[skiberdee]

anyone???

 

[logainofhades]

That 750w is for Crossfire. A single one requires at least a 500w. I would go with at least a 750w anyway, just to give yourself some headroom should you decide to buy another 7970. Corsair or Seasonic with a rating of 80+ bronze or better.

 

[skiberdee]

well i have a 700w psu at the moment and i just get a black screen after 10min the box says 750w (or greater) power supply with two 8pin pci express if it was for crossfire wouldnt it say 4??

 

[Mousemonkey]

anyone???

Don't...

Bump posts


http://www.tomshardware.com/forum/283384-33-read-first

 

[toyftw]

well i have a 700w psu at the moment and i just get a black screen after 10min the box says 750w (or greater) power supply with two 8pin pci express if it was for crossfire wouldnt it say 4??

Hi - what brand/model is your 700w PSU? Unfortunately, there are
a lot of PSU's out there that exaggerate/lie about their publ specs.

Yes, two pci-e connectors are req for one 7970, a ref 7970 req 1- 6pin & 1 - 8pin,
your vapor-x req 2 - 8pin.

A single 7970 sys should run finr on a quality 550w unit(with headroom),
the vapor-x does draw more power, but a quality 550w w/min 31a on the
+12v rail(s) should still be more than enough.

Need make/model of your current PSU, I suspect that may be the root
of your issue.

 

[skiberdee]

Hi - what brand/model is your 700w PSU? Unfortunately, there are
a lot of PSU's out there that exaggerate/lie about their publ specs.

Yes, two pci-e connectors are req for one 7970, a ref 7970 req 1- 6pin & 1 - 8pin,
your vapor-x req 2 - 8pin.

A single 7970 sys should run finr on a quality 550w unit(with headroom),
the vapor-x does draw more power, but a quality 550w w/min 31a on the
+12v rail(s) should still be more than enough.

Need make/model of your current PSU, I suspect that may be the root
of your issue.

i have a ocz modxtreme pro

 

[fkr]

so it looks like you need 350-400 watts just for your graphics card.
watts= amps*volts
400 = x* 12 volt rail
34 amps
you need a power supply that produces a 12v rail at 30 amps
if you look at your specs it will say what amps it pushes on each rail.
make sure you check the product specs on any recommendation given
I am not sure of euro pricing but corsair or seasonic are best choices
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139010

this one has a promo code also

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139029
if you can use newegg

 

[skiberdee]

so it looks like you need 350-400 watts just for your graphics card.
watts= amps*volts
400 = x* 12 volt rail
34 amps
you need a power supply that produces a 12v rail at 30 amps
if you look at your specs it will say what amps it pushes on each rail.
make sure you check the product specs on any recommendation given
I am not sure of euro pricing but corsair or seasonic are best choices
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139010

this one has a promo code also

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139029
if you can use newegg

ahhh i think my problem is that my psu produces 25amps thanks for the help

 

[toyftw]

ahhh i think my problem is that my psu produces 25amps thanks for the help

Hi - OCZ modxtreme pro 700w outputs 46a on the +12v rail(s), you
have 2 - +12v rails (25a each), 46a combined.

You might have a bad psu, but the brand/specs are fine.

 

[skiberdee]

Hi - OCZ modxtreme pro 700w outputs 46a on the +12v rail(s), you
have 2 - +12v rails (25a each), 46a combined.

You might have a bad psu, but the brand/specs are fine.

it works fine with my gtx 580sc what power supply would you recomend for the vapor x?

 

[fkr]

there are some horror stories out there of burning out the power supply and then it taking other components out with it, so I am happy you noticed before any harm was done. I just learned this yesterday after PM one of the top contributors in the power supply forum and he coached me a little and then I did a bunch of reading. never realized how secondary overall wattage was as compared to the ability to carry a current continuously. live and learn

 

[skiberdee]

there are some horror stories out there of burning out the power supply and then it taking other components out with it, so I am happy you noticed before any harm was done. I just learned this yesterday after PM one of the top contributors in the power supply forum and he coached me a little and then I did a bunch of reading. never realized how secondary overall wattage was as compared to the ability to carry a current continuously. live and learn

i think im going to go for the hx850 do you think that would be ok?

 

[toyftw]

it works fine with my gtx 580sc what power supply would you recomend for the vapor x?

How long have you had it? If it's still in warranty rma it.
It did fail Hardocp's review. stopped working twice during load tests

It's rated power is more than sufficient. I think you have one
that isn't delivering it's specs.

Look for quality brands such as Seasonic, Antec, XFX, most Corsair's,
Rosewill Capstone series, PC Power & Cooling, most Enermax, most Silverstone.

Where are you located? UK?

 

[logainofhades]

well i have a 700w psu at the moment and i just get a black screen after 10min the box says 750w (or greater) power supply with two 8pin pci express if it was for crossfire wouldnt it say 4??

I got the 500w or greater from this.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814202005&nm_mc=KNC-GoogleAdwords&cm_mmc=KNC-GoogleAdwords-_-pla-_-Desktop+Graphics+Cards-_-N82E16814202005&gclid=CJ21joKI1bUCFQPnnAod8kMA-w

i think im going to go for the hx850 do you think that would be ok?

That would be more than enough for your setup. I run 2x 5850's on a TX 750. I highly doubt any single GPU graphics card is going to pull more wattage than my two cards combined.

 

[skiberdee]

How long have you had it? If it's still in warranty rma it.
It did fail Hardocp's review.

It's rated power is more than sufficient. I think you have one
that isn't delivering it's specs.

Look for quality brands such as Seasonic, Antec, XFX, most Corsair's,
Rosewill Capstone series, PC Power & Cooling, most Enermax, most Silverstone.

Where are you located?

im located in england i was looking at the 850W XFX Pro Black Edition and the 1000w akasa venom.

psu is about 8-10 months old

 

[fkr]

corsair. 7 year warranty. good power. gold efficiency. That should be good

not to mention a new egg 5 egg rating 83% of the time is really impressive

 

[skiberdee]

corsair. 7 year warranty. good power. gold efficiency. That should be good

ok thanks for your help

 

[toyftw]

im located in england i was looking at the 850W XFX Pro Black Edition and the 1000w akasa venom.

psu is about 8-10 months old

Hi - XFX pro is a good choice, Seasonic built.
Plz understand tho, you don't need anywhere near 850w psu.

It wasn't that 700w isn't enough, it was that the PSU itself
appears bad.

No harm in 850w, but the unnecessary high initial cost.

A quality 650w unit would still provide more amps/watts than
you require.

You should be able to rma the unit, but they will most likely send
you another of the same or repair(unlikely as it's made by sirtec) the one you send

 

[skiberdee]

Hi - XFX pro is a good choice, Seasonic built.
Plz understand tho, you don't need anywhere near 850w psu.

It wasn't that 700w isn't enough, it was that the PSU itself
appears bad.

No harm in 850w, but the unnecessary high initial cost.

A quality 650w unit would still provide more amps/watts than
you require.

ok il look at some 650w psu's thanks for you help

 

[toyftw]

im located in england i was looking at the 850W XFX Pro Black Edition and the 1000w akasa venom.

psu is about 8-10 months old

Hi again - stay away from akasa venom - made by Andyson, not a respected oem.

 

[skiberdee]

Hi again - stay away from akasa venom - made by Andyson, not a respected oem.

oh ok thanks for letting me know

 

[toyftw]

ok il look at some 650w psu's thanks for you help

Hi - I usually use Novatech or scan when searching UK. If you have a
favorite, use it, just sick to quality brands, you can ask here on
specific brand/model if you are not sure.

 

[skiberdee]

Hi again - stay away from akasa venom - made by Andyson, not a respected oem.

oh ok thanks for letting me know

 

[skiberdee]

Hi - I usually use Novatech or scan when searching UK. If you have a
favorite, use it, just sick to quality brands, you can ask here on
specific brand/model if you are not sure.

mainly use amazon as i get free next day delivery will ask tho if i get stuck