Measured system power for my 8800GTS comp

[thilanliyan]

Originally posted by: Truenofan
seasonic are quite nice, i had a 500 and only replaced it because i thought i was having problems, it was a s12, very quiet and very power efficient, i think it was in the low 90's

I just took a look at a review of the S12 and DAMN...that's very efficient.

 

[Gamingphreek]

Originally posted by: Truenofan
seasonic are quite nice, i had a 500 and only replaced it because i thought i was having problems, it was a s12, very quiet and very power efficient, i think it was in the low 90's

They are not the low 90's. Most of them are not even 80 Plus Certified. They normally hang right around the 80% mark.

The OCZ's are typically around the 75% mark.

[L=SPCR]www.silentpcreview.com] has various marks for efficiency at a wide variety of wattages.

Finally, get the multiple 12V Rails. There is no reason to go one way or another. If you are concerned about multiple 12V Rails, then look at JonnyGuru or SPCR. Both of which do Crossload tests which well tell you what happens if you strain one Rail and not the rest.

-Kevin

 

[GerferCholkin]

I've been worried about this.

I'm planning a machine with (Hopefully) an 8800gts 320MB, if not x1950xt 256MB, otherwise x1950pro. (the cards pricing is in that order decending, in the country I live.)

I've been hoping that a tr2 430W will handle these cards but am worried about it, upgrading to something in 600w range is pretty much out of the question, unless I wait like
3 months to get the GPU, untill then running with on-board.

The price doubles with anything above 500W, depending on brand, and most Antec, Thermaltake, other "high-level" PSUs are too expensive.

Tr2 430W is 500 South African Rand,
My other option was a "Liquid Silver" 500W that has 20A on the 12v rail, also R500.
However I've been unable to find any web info on Liquid Silver.
PSU with Case
I know it has 20A 12v rail 'cos a friend has one of these.
BTW I Know the case is FUGLY and its made of old coke cans i'm sure...

My friend is running a 7900gt 256MB, 939 x2 4200+, 2x ddr 400 512mb, 2 SATA drives, DVD-RW on this thing.

How will my intended setup handle this?

AM2 X2 3800+ (or 4600+, depending on funds.) Stock Cooler
2X 512MB ddr2 800
2X SATA 2 Drives
SATA DVD-RW
8800GTS (Being the heaviest load of the 3 as far as I know)
Either Asus m2npv-vm or Gigabyte GA-M51GM-S2G

Thanks.

 

[happy medium]

Originally posted by: GerferCholkin
I've been worried about this.

I'm planning a machine with (Hopefully) an 8800gts 320MB, if not x1950xt 256MB, otherwise x1950pro. (the cards pricing is in that order decending, in the country I live.)

I've been hoping that a tr2 430W will handle these cards but am worried about it, upgrading to something in 600w range is pretty much out of the question, unless I wait like
3 months to get the GPU, untill then running with on-board.

The price doubles with anything above 500W, depending on brand, and most Antec, Thermaltake, other "high-level" PSUs are too expensive.

Tr2 430W is 500 South African Rand,
My other option was a "Liquid Silver" 500W that has 20A on the 12v rail, also R500.
However I've been unable to find any web info on Liquid Silver.
PSU with Case
I know it has 20A 12v rail 'cos a friend has one of these.
BTW I Know the case is FUGLY and its made of old coke cans i'm sure...

My friend is running a 7900gt 256MB, 939 x2 4200+, 2x ddr 400 512mb, 2 SATA drives, DVD-RW on this thing.

How will my intended setup handle this?

AM2 X2 3800+ (or 4600+, depending on funds.) Stock Cooler
2X 512MB ddr2 800
2X SATA 2 Drives
SATA DVD-RW
8800GTS (Being the heaviest load of the 3 as far as I know)
Either Asus m2npv-vm or Gigabyte GA-M51GM-S2G

Thanks.

I don't think this system will run on that psu with only a 20 amp rail.

A 8800gts uses more than twice the power then the 7950gt.
Heres a chart....
http://www.atomicmpc.com.au/forums.asp?s=2&c=7&t=9354

 

[GerferCholkin]

Thanks for reply.
Guess your right, I think i'm being a bit too cheap.

If anyone one wouldn't mind helping me out, what would you take from the following list, obviously the bigger the better, but I have a limit on what I can spend.
Also if you think nothing listed would be suitable, please recommend something...
(Arranged loosely in order of cost, lowest to highest)

Antec Earth Watts 380W 12v1 17A 12v2 15A Total 12v 27A
TR2 W0093 500W 12v1 14A 12v2 15A
Antec Earth Watts 430W 12v1 17A 12v2 16A Total 12v 30A
Asus A-45GA 450W 12v1 14A 12v2 15A
Antec NeoHE 380W 12v1 17A 12v2 15A Total 12v 27A
Antec NeoHE 430W 12v1 16A 12v2 16A 12v3 16A 384W available to 12v's
Antec TruePower Trio 430W 12v1 16A 12v2 16A 12v3 16A 384W available to 12v's
Enermax Liberty 400W 12v1 20A 12v2 20A Total 12v 30A
Zalman ZM460B-APS 460W 12v1 16A (peak 20A) 12v2 18A (peak 22A)

These are all ample for the system I'm planning, I think, some though have dual or multi 12V rails which confuses the issue for me.
Especially because the don't really specify which rail powers what (CPU, GPU, Peripherals...)

The specs all from manufacturer websites.

...Note...I tried to make it look readable but once posted it looks all screwy...sorry

 

[Matt2]

Is there a way to know which components are on which 12v rail?

 

[43st]

Interesting...

Here's mine...

Idle = 107 Watts
Load = 167 Watts

PC:
E6600
GA-965P-DQ6
2Gb Corsair XMS2
Gigabyte 7900GS
WD SE16 250Gb
Pioneer 16x DVD+R
Creative X-Fi Fatality
Antec Nine hundred (single 200mm fan)
Seasonic S12 600W
Vista (min processor state 5%, max state 100%, all others max power saver)

EDIT: added PSU

 

[MTDEW]

Is there a way to know which components are on which 12v rail?

I've been wanting an answer to that question for ages.
Seems nobody knows , which seems strange since isnt that the purpose of dual rails (to help evenly distribute the power)?

Ive never seen any documentation that comes with dual rail psu's mention it, or any reviews.

 

[thilanliyan]

I think part of my high results seem to be related to the less than stellar efficiency of the Powerstream 420 which is about 70% from what I gather. So even if I am drawing 350w from the wall, the system itself is only using about 250w, which is decent I think considering my OCing.

 

[GerferCholkin]

quote:

Is there a way to know which components are on which 12v rail?


I've been wanting an answer to that question for ages.
Seems nobody knows , which seems strange since isnt that the purpose of dual rails (to help evenly distribute the power)?

Ive never seen any documentation that comes with dual rail psu's mention it, or any reviews.

Compatibility issues for ATX power supplies and motherboards
A few pages

This just talks about it being basically unclear.

There's also an article on www.bleedingedge.com that has something to do with this, but I can't find it. It was called "Power Supply Selection Guide" but searching for it yields no result...

But antecs page for EarthWatts 430W says that its 12v1 for CPU and 12v2 for Motherboard and peripherals

So maybe it's safe to assume others do it that way too?

 

[avi85]

Originally posted by: MTDEW

Is there a way to know which components are on which 12v rail?

I've been wanting an answer to that question for ages.
Seems nobody knows , which seems strange since isnt that the purpose of dual rails (to help evenly distribute the power)?

Ive never seen any documentation that comes with dual rail psu's mention it, or any reviews.

On my Sparkle it says on the side that 12v1 (or was it 12v2?) is a yellow wire with a thin black stripe whereas the other one is solid yellow. Also, in some power supply reviews they take apart the power supply and point out what is hooked up to which rail.