Is this PSU enough for the following vid cards?

Toggle sidebar Toggle sidebar
D

dflynchimp

Senior member
Apr 11, 2007
468
0
71
I think you look pretty safe there. The psu has 2x 6-pin which should be enough for what you're thinking of, although personally I'm not so sure about the 9500's performance in physx. you should do some benchmark hunting to see if it's worth it. What resolution do you game at?
 
Keysplayr

Keysplayr

Elite Member
Jan 16, 2003
21,211
50
91
9600GSO's come in many flavors. For all I know, this one you've shown me here could have either 48 or 96 shaders. You need to be careful and pay particular attention to these details. 80 bucks seems a bit expensive, because I got an Asus 9600GSO 96 shader, 512MB 128bit GDDR3 memory for about 40 bucks through newegg about 3 months ago.
 
Qbah

Qbah

Diamond Member
Oct 18, 2005
3,754
10
81
The only 9600GSO I could find on EVGA's page is this. It ends with an "LR" though and not with a "TR" as in your link. The listed one has 48 shaders so it won't cut it for PhysX imo. I wouldn't risk it with that if I were you.

It seems all the 9600GSOs dried up... You might want to check the FS/FT forum here or "suck it up" and buy a GT240 - it will have 96 shaders guaranteed. And it should offer the same performance as the 9600GSO tested by Keys. Again, it should :p

So in the end, that's quite an expense just to try PhysX out. None of your friends have a 8800GT or better? That way you could see the effects and determine if it's worth it ? Or something similar? Would be the best way to "try it out" imo.
 
Last edited:
cbn

cbn

Lifer
Mar 27, 2009
12,968
221
106
SRoode said:
4 Rails vs 1 Rail. Nice choice though.
Click to expand...

What is the difference between one 12v rail and four 12v rails?

Currently I have a Antec Neo He 550 with multiple 12v rails. However, I am eyeing a Silverstone 450 watt SFX PSU made by FSP that only has one 12v rail.

How comparable would the two PSUs be?
 
S

SRoode

Senior member
Dec 9, 2004
243
0
0
It's only a problem if what you connect demands more amps than what one single rail can deliver. Also, you have to make sure you balance your rail loads. Other than that, not much difference.
 
cbn

cbn

Lifer
Mar 27, 2009
12,968
221
106
SRoode said:
It's only a problem if what you connect demands more amps than what one single rail can deliver. Also, you have to make sure you balance your rail loads. Other than that, not much difference.
Click to expand...

Balance rail loads? I just plug the modular connectors into the front of the Antec PSU.

How do I balance loads?
 
S

SRoode

Senior member
Dec 9, 2004
243
0
0
Let's say you have a new video card that demands 220W (like the 8800GT when not overclocked). That means you need 18.5A to drive it (and it only has a single 6 pin connector). If you connect the card to a rail that can only supply 16A, then it's going to be questionable because the PCIe slot will only supply 75W (6A), and the same rail may be driving other PC parts.

If you overclock your video card, power consumption increases exponentially.
 
cbn

cbn

Lifer
Mar 27, 2009
12,968
221
106
SRoode said:
Let's say you have a new video card that demands 220W (like the 8800GT when not overclocked). That means you need 18.5A to drive it (and it only has a single 6 pin connector). If you connect the card to a rail that can only supply 16A, then it's going to be questionable because the PCIe slot will only supply 75W (6A), and the same rail may be driving other PC parts.

If you overclock your video card, power consumption increases exponentially.
Click to expand...

How do you know which rail is connected to what?
 
cusideabelincoln

cusideabelincoln

Diamond Member
Aug 3, 2008
3,275
46
91
Read the PSU manual.

Also what's wrong with your current Antec Neo? It should run the 9500GT + 5700 cards perfectly fine.
 
H

HOOfan 1

Platinum Member
Sep 2, 2007
2,337
15
81
SRoode said:
Let's say you have a new video card that demands 220W (like the 8800GT when not overclocked). That means you need 18.5A to drive it (and it only has a single 6 pin connector). If you connect the card to a rail that can only supply 16A, then it's going to be questionable because the PCIe slot will only supply 75W (6A), and the same rail may be driving other PC parts.

If you overclock your video card, power consumption increases exponentially.
Click to expand...

except that the 8800GT doesn't draw anywhere near 220W.

PCI-E SIG 2.0 specifications state that a 6 pin PCI-E connector should not be asked to pull more than 75W in the first place. Then it is allowed to pull 150W from the motherboard socket....which any competently designed multi-rail PSU will not be on the same 12V output limit in the first place...so it is drawing its power from different limits. That is a 225W LIMIT on a non overlocked 8800GT, but it won't even use that and the bias will be on the PCI-E connector...meaning that the card will pull more from the PCI-E connector on it's own rail, rather than the ATX board which might be sharing a rail with other components.
 
Last edited:
H

HOOfan 1

Platinum Member
Sep 2, 2007
2,337
15
81
SRoode said:
So he should buy the 4 rail?
Click to expand...

I forgot 8800GT is 2.0...so 150W from slot is allowed but I can guarantee you the 8800GT isn't using 220W.....the HD5970 just barely uses that much itself.

The FSP built OCZ in question has a very competent rail distribution...so being multi-rail is a non-factor...like it is 98% of the time.

The Corsair is a better PSU by far...but the OCZ is by far good enough for what the OP is asking.
 
Last edited:
S

SRoode

Senior member
Dec 9, 2004
243
0
0
Again, I would pay $7 to not have to worry about it. Or, pay $40 less for Mark's recommendation. I think the OP has some nice options to choose from.
 
H

HOOfan 1

Platinum Member
Sep 2, 2007
2,337
15
81
SRoode said:
Again, I would pay $7 to not have to worry about it. Or, pay $40 less for Mark's recommendation. I think the OP has some nice options to choose from.
Click to expand...

right...I was talking about Mark's suggestion.

The Thermaltake in the original post is crap...

OH WOW LOL I just looked at the price that they are asking..what are they smoking?

$80 for a PSU that only has 29A/348W (more likely less than that actually)
of 12V output....that is hilarious...and typical Thermaltake way overcharging for their PSUs
 
Last edited:
happy medium

happy medium

Lifer
Jun 8, 2003
14,387
480
126
at80eighty said:
Thinking of trying the PhysX + ATI thing thats been floating around here and I was wondering if this powersupply http://www.amazon.com/Thermaltake-W0...187732&sr=1-14 was decent enough for a Sapphire HD 5750 + PNY GeForce 9500 GT combo

/Angry face icon because I have a headache
Click to expand...

I didn't see this question asked yet.
What kind of power supply do you have now?
A 5750 dosen't require much power and neither does a physx card.
 
cusideabelincoln

cusideabelincoln

Diamond Member
Aug 3, 2008
3,275
46
91
happy medium said:
Computer bottleneck is not trying to run physx, he's not the op.

read the thread!:D
Click to expand...

Good job not answering either of their questions. Now let me clarify...

Computer Bottleneck said:
What is the difference between one 12v rail and four 12v rails?

Currently I have a Antec Neo He 550 with multiple 12v rails. However, I am eyeing a Silverstone 450 watt SFX PSU made by FSP that only has one 12v rail.

How comparable would the two PSUs be?
Click to expand...

The Antec Neo HE should be better and put out more power. Depending on what exact Silverstone model you're talking about, though, the 450W might be a bit more efficient. But it's nothing to really worry about, unless your current PSU is having problems.
 
happy medium

happy medium

Lifer
Jun 8, 2003
14,387
480
126
Sroode already answer him correctly in post # 13.

Edit: To elaborate further. If you have 4, 18 amp rails and the cpu,drives and gpu are on 1 rail, with a high end gpu and a overclocked quad core and 3 hard drives it won't work.

It's important to buy a psu with multiple rails that distributes the power the right way.

Like this one..Notice how the rails are distibuted..

http://www.enermaxusa.com/catalog/product_info.php?cPath=21_52&products_id=118

You can have to many rails with to little amperage. I'd rather have a 3 rail psu with 30 amp rails then a 6 rail psu with 15 amp rails.
Combined rail amperage is also important.
 
Last edited:
You must log in or register to reply here.

TRENDING THREADS

COMPANY
RESOURCES
FOLLOW
Top Bottom