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walterman
10-23-04, 02:42 PM
Hi, i've been testing the gainward 6800 GT 2400 GS with crap power supplies &
i've learn a lot of new things to me.

My hardware config:

Asus P4C800
Intel P4 3.0 GHz Prescott
2x512MB PC3200
Maxtor 160GB HD

In the beginning, my machine was using a 250W power supply & a crap
geforce FX 5500, & i had no problems. Then DooM III arrived :)

When i upgraded to the 6800 GT, my machine took an eternity to load
windows, & it looked like an slideshow when playing DooM III. But it
worked. I had around 15fps in the timedemo.

Then, i got a crap 400W power supply (9A in the 12V rail), & still
windows needed an eternity to load, but i jumped from 15fps to 35fps
in the timedemo. Only with a power supply upgrade.

Then i used my old 250W power supply to power the mobo & hard disk only,
& i used the new crap 400W power supply to power the 6800 GT only.
With 2 crap power supplies, i jumped from 35fps to 45fps.

Finally, today i got a good 200$ power supply with 50A in the 12V rail, & now
i'm getting around 70fps in the timedemo & windows works fine again.

I've run the timedemos in 1280x1024 in Ultra High Quality mode.

So, i can resume my experiments with the following table:

15fps <- 250W
35fps <- 400W (9A in 12V rail)
45fps <- 250W (mobo) + 400W (vga)
70fps <- 550W (50A in the 12V rail)

Therefore, i think that if you've a power hungry CPU like prescott, & you
pretend to use a new gen card like the 6800GT, you should upgrade to a
good quality power supply with a lot of Amps in the 12V rail.

I hope that my experiments will help you. (popcorn)

bkswaney
10-23-04, 02:45 PM
Good post. :)

Yes running a Prescott and 6800 takes
a LOT of power. ;)
I'm going to up my PSU to a 550.
My 480watt is running my rig but no extra left in it.

Elvin Presler
10-23-04, 02:58 PM
Then i used my old 250W power supply to power the mobo & hard disk only,
& i used the new crap 400W power supply to power the 6800 GT only.

Hah! Now there's something I never thought of. Good idea.

einstein_314
10-23-04, 04:52 PM
Wow, I new powersupplies made a difference but I never would have imagined that much. Good call on the two power supplies though. I never would of thought of that. :lol2: The power supply is one of the most important parts in your computer.

bkswaney
10-23-04, 09:01 PM
Wow, I new powersupplies made a difference but I never would have imagined that much. Good call on the two power supplies though. I never would of thought of that. :lol2: The power supply is one of the most important parts in your computer.


It sure is and so is good cooling.
Many forget these things when they build rigs.

They go and spend a LOT on the motherboard,cpu and memory.
Then wonder why it's unstable. "lol" :rofl:

MustangSVT
10-23-04, 09:24 PM
Why'd you buy a crap 400W PSU in the first place?

einstein_314
10-23-04, 09:34 PM
Why'd you buy a crap 400W PSU in the first place?

There are many people out there who do not realize the significance of a good power supply. They buy the best cpu, mother board, ram, video card but buy a $50 power supply.

MustangSVT
10-23-04, 09:36 PM
$50 will get you a Thermaltake 420W and I'm pretty sure that would run his system more than fine. Crap PSU is more like $20 to $30. Anything $50 and above will get you a good PSU. Anyway $200 on a PSU seems overkill to me. I paid around $70-$80 on my Enermax like 2.5+ years ago, and it still runs my overclocked system really well, and I even have more components than you, and same vid card (Gainward 2400 GS).

einstein_314
10-23-04, 09:41 PM
$50 will get you a Thermaltake 420W and I'm pretty sure that would run his system more than fine. Crap PSU is more like $20 to $30. Anything $50 and above will get you a good PSU. Anyway $200 on a PSU seems overkill to me. I paid around $70-$80 on my Enermax like 2.5+ years ago, and it still runs my overclocked system really well, and I even have more components than you, and same vid card (Gainward 2400 GS).

Sorry, I was talking canadian dollars. so that's like what....$5 US? :lame: actually it's like $30-35. oh well

MustangSVT
10-23-04, 09:55 PM
It's actually about $40 US.. But yea $50 CAD won't cut it. For about $65-$70 CAD, you can get an Enermax EG365PE or a Thermaltake 420W.

Fog Dogg
10-23-04, 10:44 PM
So I have an antec Truepower 430 watt PSU with 20A on the +12 rails... You think it's holding me back any?

2500+M @ 2.2ghz 1.5V
3 Sticks of ram
1 HD
Geforce 6800GT @ Stock -- Can't OC past 360 on the core though

Didn't really realize that the PSU was that important..

I know I don't get anywhere near 70fps in doom 3.. maybe around 42... I've always attributed my sup-par performance to my PC2100 ram that I have OC'd to ~333mhz which I intend to replace soon...

Thoughts?

bkswaney
10-23-04, 11:02 PM
So I have an antec Truepower 430 watt PSU with 20A on the +12 rails... You think it's holding me back any?

2500+M @ 2.2ghz 1.5V
3 Sticks of ram
1 HD
Geforce 6800GT @ Stock -- Can't OC past 360 on the core though

Didn't really realize that the PSU was that important..

I know I don't get anywhere near 70fps in doom 3.. maybe around 42... I've always attributed my sup-par performance to my PC2100 ram that I have OC'd to ~333mhz which I intend to replace soon...

Thoughts?


No. That PSU is top of the line.
Truepower Antec's are great psu's.
I'm just putting a hell of a load on mine. It's also almost 3 years old now.
My setup with watercooling, lights and all eats power. I'm looking
to get a 550 watt myself. :)

I would love a PC Power and Cooling but there is no way I can shell out
over 200 bucks for a PSU. I would LOVE to have one but my funds
will not allow it.

Fog Dogg
10-23-04, 11:08 PM
No. That PSU is top of the line.
Truepower Antec's are great psu's.
I'm just putting a hell of a load on mine. It's also almost 3 years old now.
My setup with watercooling, lights and all eats power. I'm looking
to get a 550 watt myself. :)

I would love a PC Power and Cooling but there is no way I can shell out
over 200 bucks for a PSU. I would LOVE to have one but my funds
will not allow it.

Sweet, it's the ram then.. Thanks alot man.

bkswaney
10-23-04, 11:09 PM
I like this one for the money.
It's the OCZ PowerStream 470.

http://www.frozencpu.com/cgi-bin/frozencpu/psu-90.html

I might pick one up myself.
Mine now is the TrueBlue 480.
But the 12volt is only 22a.

The OCZ is 33a and the peak power on it is 560. :)
For 129.00 bucks it's hard to beat.

Anyone know of a great PSU for under 130 bucks? :D

bkswaney
10-23-04, 11:26 PM
Check this one out. Seems really nice for 99 bucks. :)



http://www.frozencpu.com/cgi-bin/frozencpu/psu-70.html

http://www.frozencpu.com/cgi-bin/frozencpu/scan/se=Power%20Supplies/se=Super%20Flower/mp=menu_search.html

kahloq
10-23-04, 11:41 PM
Check this one out. Seems really nice for 99 bucks. :)



http://www.frozencpu.com/cgi-bin/frozencpu/psu-70.html

http://www.frozencpu.com/cgi-bin/frozencpu/scan/se=Power%20Supplies/se=Super%20Flower/mp=menu_search.html

OCZ 420 / 470 / or 520 all the way. Just as good as PCp&C if not better and has more features at a much lower cost.

bkswaney
10-23-04, 11:47 PM
OCZ 420 / 470 / or 520 all the way. Just as good as PCp&C if not better and has more features at a much lower cost.


Cool!
I'll get me a OCZ. :) :ORDER:

Slammin
10-23-04, 11:58 PM
I just bought and installed this tonight: http://thetechzone.com/?m=show&id=104

And will be putting my Antec TruePower 430 in another experiment. It's only been a few hours of use, but so far this PSU is living up to the reviews and seem s great. I got it at Circuit City for $99.

bkswaney
10-24-04, 12:06 AM
I just bought and installed this tonight: http://thetechzone.com/?m=show&id=104

And will be putting my Antec TruePower 430 in another experiment. It's only been a few hours of use, but so far this PSU is living up to the reviews and seem s great. I got it at Circuit City for $99.


I take what I said back.
I'm ordering one of these to. :D :D :D
Thanx for the link.

U know it really suxs no one local sells
a good PSU. :(
Antec is all u can find. For a regular
person that's fine.
But for people like us it's not. ;)

bkswaney
10-24-04, 12:25 AM
Just ordered the Ultra X-Connect in Blue. ;)
500 watts and cool as hell. :D
Man this thing has some great reviews.

Blacklash
10-24-04, 12:43 AM
I have never understood why people will shell out 800-1000 dollars on a CPU 500 for a video card, yet cut corners on thier PSU and motherboards. IMO having clean stable well sheilded power is a good thing. It is not about I "only" need this much. How stable is it? How much interference does it cause? Many problems can arise from a crappy PSU.

bkswaney
10-24-04, 03:51 AM
I have never understood why people will shell out 800-1000 dollars on a CPU 500 for a video card, yet cut corners on thier PSU and motherboards. IMO having clean stable well sheilded power is a good thing. It is not about I "only" need this much. How stable is it? How much interference does it cause? Many problems can arise from a crappy PSU.


Amen brother. :D :ORDER: :clap2:

pkrexer
10-24-04, 12:55 PM
I have an Aspire 520watt Power supply.

was like $59 and its rated 32A on the +12v rail. Plus it has 3 fans built into it with an adjustable speed knob on the back.

Clevor
10-24-04, 06:42 PM
You don't need to spend a lot of money on a good PSU (like close to $100). Those PSUs designed for overclocking are hype.

Looky here: I am running a Fortron 530W (560W?) from Newegg. I got it for $75 I think. As an experiment, I have been running a 6800 Ultra with both power connectors hooked up to one PSU lead. I have no problems so far.

This PSU has pots but they are not bumped. I bumped pots on two PSUs and one lasted 3 months and the other 2 years, but they eventually failed.

And get this: I am running 2-120 mm fans, 3-80 mm fans, 2-50 mm fans, and 1-40 mm fan. I've also run a 3.0C at 3.9 gig and 1.675 VCORE on the same rig. No problems so far.

My rails run dead on or a tad under. But in my experience, bumped rails didn't improve overclock on the CPU or ram one bit.

bkswaney
10-24-04, 07:20 PM
You don't need to spend a lot of money on a good PSU (like close to $100). Those PSUs designed for overclocking are hype.

Looky here: I am running a Fortron 530W (560W?) from Newegg. I got it for $75 I think. As an experiment, I have been running a 6800 Ultra with both power connectors hooked up to one PSU lead. I have no problems so far.

This PSU has pots but they are not bumped. I bumped pots on two PSUs and one lasted 3 months and the other 2 years, but they eventually failed.

And get this: I am running 2-120 mm fans, 3-80 mm fans, 2-50 mm fans, and 1-40 mm fan. I've also run a 3.0C at 3.9 gig and 1.675 VCORE on the same rig. No problems so far.

My rails run dead on or a tad under. But in my experience, bumped rails didn't improve overclock on the CPU or ram one bit.


This is why I went with the Ultra X-Connect.
It's 99 bucks.
I love the modular PSU's. :)