OCZ PSU Question

Twist86

Twist86

Active Member
So I never dealt with multi-rail PSU before but how exactly do you factor the amps? Any issues with balancing the load are you able to overload a rail or did they stupid proof it?

Also with this PSU below (great deal imo) could it handle a 5850 / Phenom II X4 920 without issues?
http://www.newegg.com/Product/Product.aspx?Item=N82E16817341017

I figure for $43 its a hell of a deal and I can surprise my mother this year with a 920 and when she needs it a 5850 to keep her AM2+ rig going a little longer. (simple WoW junkie)

Thanks.
 
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It is funny you linked that OCZ OCZ700GXSSLI GameXStream I was just looking at it. The only question I have to ask is....modular or not. Would make life a lot cleaner if I didn't have to mess with clutter. Specially since I wont have to upgrade her system for another 2-3 years. 1000w+ might be required for everything by then you know what I mean?

Though one thing id like to know is the difference between that multi-rail set up vs a single rail. Just so I know in the future :)
 
Twist86 said:
It is funny you linked that OCZ OCZ700GXSSLI GameXStream I was just looking at it. The only question I have to ask is....modular or not. Would make life a lot cleaner if I didn't have to mess with clutter. Specially since I wont have to upgrade her system for another 2-3 years. 1000w+ might be required for everything by then you know what I mean?

Though one thing id like to know is the difference between that multi-rail set up vs a single rail. Just so I know in the future :)
Click to expand...

Multi rail units have the power output split over multiple rails, to find the total power output you take the overall wattage that it gives 680W over the +12v rails, divide that by 12 and you end up with a maximum combined wattage over the +12v rails of 56.67 Amps.

Also, the GameXStream line is not modular.
 
I see thanks for spelling that out to me :) (the amperage) I know its not modular...reason I am torn now :P
 
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Hey i have that Psu,Its fantastic...Run my system on it no problems and cant see why it would not run an i7 and 5850/5870 based system like Bomber mentioned.

Its also very quiet,and modular which is a big plus....excellent psu for the value. ;)
 
Well that is pretty close to her specs...and unless I misread the 5850 actually draw less power then the 4890 correct?
 
According to Gpu review,The 5850 -158 W and the 4890 -190 W

So yeah :)

Shouldnt have any problems :good:
 
Yeah, that PSU will have no issue running any current ATI graphics processors barring dual GPU varieties such as the 5970/4870x2.
 
To the OP, I think i make a good point pls read....

It all comes down to whether you value $20 or intelligence.

THE OCZ
That is not a true multirail PSU however as it has one single output winding and is electronically split with 240VAC safety limiting on each rail. This is also why bomber correctly indicated that you cannot simply add the rails up. True mutlirail designs (scientific level PSU) will have essentially 2 individual coils on the transformer to create 2 true seperate 12V rails. According the the PSU nameplate it can deliver 504W (50A) on the 2 (elctronic) 12V rails. Wait, 504W is not 50A you say - its actually 42A. For the money - where did those amps go?

'MULTI-RAIL' PSU BOLLOCKS
The biggest ever bullshit marketing success has been the love affair with 'multiple rails' on consumer grade PC PSUs. Its a joke, in this case this 'multi-rail' design loses 8A of deliverable power (due to max 240VAC limit) by creating 'rails'. Its more complicated than that, but that is essentially the gist.

This Corsair 650W (below) provides 52A on the 12V rail. That is 10A more than the OCZ.

$20 more. gets you quality, 5 year warranty (vs 3) single rail, quality action with 10A more on the 12V rail

Another way to think of it is the:

  • OCZ is $10/watt but you only actually recieve 1.4A / USD rather than the
  • Corsair which is is $12/watt but provides 1.5A / USD (BETTER VALUE)

This all adds up to 10A more for GPU, CPU upgrades etc for $20 more (or.....2 watts' worth on the OCZ).

It's a way better deal www.newegg.com/Product/Product.aspx?Item=N82E16817139005&cm_re=corsair-_-17-139-005-_-Product
.
.
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bigfellla said:
To the OP, I think i make a good point pls read....

It all comes down to whether you value $20 or intelligence.

THE OCZ
That is not a true multirail PSU however as it has one single output winding and is electronically split with 240VAC safety limiting on each rail. This is also why bomber correctly indicated that you cannot simply add the rails up. True mutlirail designs (scientific level PSU) will have essentially 2 individual coils on the transformer to create 2 true seperate 12V rails. According the the PSU nameplate it can deliver 504W (50A) on the 2 (elctronic) 12V rails. Wait, 504W is not 50A you say - its actually 42A. For the money - where did those amps go?

'MULTI-RAIL' PSU BOLLOCKS
The biggest ever bullshit marketing success has been the love affair with 'multiple rails' on consumer grade PC PSUs. Its a joke, in this case this 'multi-rail' design loses 8A of deliverable power (due to max 240VAC limit) by creating 'rails'. Its more complicated than that, but that is essentially the gist.

This Corsair 650W (below) provides 52A on the 12V rail. That is 10A more than the OCZ.

$20 more. gets you quality, 5 year warranty (vs 3) single rail, quality action with 10A more on the 12V rail

Another way to think of it is the:

  • OCZ is $10/watt but you only actually recieve 1.4A / USD rather than the
  • Corsair which is is $12/watt but provides 1.5A / USD (BETTER VALUE)

This all adds up to 10A more for GPU, CPU upgrades etc for $20 more (or.....2 watts' worth on the OCZ).

It's a way better deal www.newegg.com/Product/Product.aspx?Item=N82E16817139005&cm_re=corsair-_-17-139-005-_-Product
.
.
.
Click to expand...

Unless you look at the recertified 700W GameXStream, which nets you 56.67A for $44.99.

Also,i think you calculated your figures wrong, for 1.5A/USD that would mean that corsair has 120A on the +12v rail. And $12/watt would make that corsair cost $7800:P

Also, the modxstream in the first post has 20% off with a coupon code, making it $44.

I'd buy the recertified 750W Silencer over that 650W corsair anyhow. Although you do make a good point, as both the corsair and pcp&c silencer have quite a bit less ripple than the OCZ power supplies.
 
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I see food for thought then. Thanks for the info guys and its not $20 over intelligence...its just a "ohhh cheap upgrade" kinda thing so wanted to make sure :)


However since I have such a educated bunch of PSU masters here mind if I ask you a question? Is a 450w Corsair PSU pushing it on this system or close to max load?

X2 5400+ 2.8ghz (Arctic 64 Cooler)
GIGABYTE GA-MA770-DS3P
450w Corsair - +3.3V@20A, +5V@20A, +12V@33A, [email protected], [email protected]
EVGA 512-P3-N975-AR GeForce 9800 GT 512MB
500GB HDD
1x DVDR Drive
4 120mm Fans

This is the actual system I am buying that PSU for....as said before the 940/5850 is the only upgrade this system will EVER see. If the PSU is good and wont be effected by the above items then I can actually wait till the prices drop on Corsair. She has been having random "computer freezes" while playing WoW so wasn't sure if the PSU was a issue or not. I mean it meets the amps etc but wanting to make sure.
 
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Twist86 said:
I see food for thought then. Thanks for the info guys and its not $20 over intelligence...its just a "ohhh cheap upgrade" kinda thing so wanted to make sure :)


However since I have such a educated bunch of PSU masters here mind if I ask you a question? Is a 450w Corsair PSU pushing it on this system or close to max load?

X2 5400+ 2.8ghz (Arctic 64 Cooler)
GIGABYTE GA-MA770-DS3P
450w Corsair - +3.3V@20A, +5V@20A, +12V@33A, [email protected], [email protected]
EVGA 512-P3-N975-AR GeForce 9800 GT 512MB
500GB HDD
1x DVDR Drive
4 120mm Fans

This is the actual system I am buying that PSU for....as said before the 940/5850 is the only upgrade this system will EVER see. If the PSU is good and wont be effected by the above items then I can actually wait till the prices drop on Corsair. She has been having random "computer freezes" while playing WoW so wasn't sure if the PSU was a issue or not. I mean it meets the amps etc but wanting to make sure.
Click to expand...

The 450W corsair will push that system easily, to give you an example, this is what a GTX470/GTX480 system pulls at load:
126962492671BZgJ5ZxI_7_1_l.png

(From Hardocp)
 
wow...the more I see from ATI the more impressed I am with them anymore. Thank you Bomber. This is actually the reason I was gonna upgrade....I figured I might be pushing the system (amperage wise)
This solves my problem then....I will wait till either A. I upgrade to a system that needs more then my current Corsair or B. the 650w Corsair drops in price/better sale for her 5850/940 later this year.
Thanks again for the help I appreciate it.
 
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