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Stop recommending 650W-850W power supplies for single card systems

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post #21 of 286 (permalink) Old 06-15-2011, 07:44 AM
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Quote:
Originally Posted by prava;13880462 
Thats a heck of an exception list, mate biggrin.gif:D:D:D:D

6? And 3 are very outdated.

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post #22 of 286 (permalink) Old 06-15-2011, 07:45 AM
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Quote:
Originally Posted by Phaedrus2129;13879898 
Knock it off, you're making people waste money. I guess a lot of you are newer users, but you could still look at what the more experienced are saying. If the person is going to use a GTX590 or HD6990, sure recommend a 650W. But if they're using an HD6950 or GTS450 or HD6850 and state that they aren't going to SLI/Crossfire, then recommending a 650W or more is wasting their money.

And before saying "they may want to SLI/Crossfire later", first check and make sure that they have a dual slot motherboard in the first place. rolleyes.gif


Oh yes Phaedrus2129 you're absolutely right..applaud.gif

It's actually quite annoying to watch people pulling stunts like that..

Quote:
Originally Posted by Phaedrus2129;13880441 
A quality 650W will run any two GPUs except HD2900XTs, GTX275s, GTX280s, GTX470s, GTX480s, and GTX580s.

GTX570s, HD6950s, HD6970s, GTX285s, etc are all fine in Crossfire/SLI.

This is assuming a highly overclocked Nehalems CPU; with a more power efficient CPU you could naturally run more.



Just last night I have reassured a OCN member that a TX650W V2 is enough for a GTX570 SLI and 2500K..

He tried it and loving it now.. (even though he had to use molex to PCIe 6Pin adapters)..


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post #23 of 286 (permalink) Old 06-15-2011, 07:47 AM
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2cents.gif I think that reccomendingmore than 650w is good. Why? Because you do not want to put your PSU at full load all the time. If the PSU dies, you can take all your parts with it, remember that. Also, you can use PSUs in future builds, and TBH, a 650w PSU isn't gunna be enuff 4 years from nao.

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Hahaha, NO! tongue.gif

I don't think you're going to have a 120mm height TOWER heatsink.

Is the Noctua U9B around your requirements?

It's:SUPER QUIETSUPEREFFICIENTSUPER EXPENSIVESUPER UGLY
But it's worthit, can last you a LONG LONG time.

In Australia it's approx $60, New Egg always has something to offer though drunken.gif
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post #24 of 286 (permalink) Old 06-15-2011, 07:47 AM
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System Type:1 physical CPU
Motherboard:Regular - Desktop
CPU:Intel Core i5-2500K 3300 MHz Sandy Bridge
Overclocked:4500 MHz, 1.3 V
CPU Utilization (TDP):90% TDP
RAM:2 Sticks DDR3 SDRAM
Video Card:NVIDIA GeForce GTX 570
Video Type:Single Card

ATTENTION: FOR PERSONAL, NON-COMMERCIAL USE ONLY
IDE HDD 5400 rpm:5 HDDs
IDE HDD 7200 rpm:2 HDDs
DVD-RW/DVD+RW Drive:1 Drive
Sound Blaster w/ Front Bay:Yes
Additional PCI Card (avg):2 Cards
Fans
Regular:4 Fans 120mm; 3 Fans 140mm;
Keyboard and mouse:Yes
System Load:90 %

Minimum PSU Wattage:585 Watts
Recommended Wattage:635 Watts

Please note that those numbers are relative and do not include GPU OC. I have a 750 W Corsair and I doubt it would handle perfectly another 570 with full OC on both cards and CPU. And efficiency is at its best at around 50 % of PSU power, so I don't see why we should not recommend 650 W for gaming rigs.

A 650 W PSU holding SLI of 570 ? Are you sure ?

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post #25 of 286 (permalink) Old 06-15-2011, 07:49 AM
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Quote:
Originally Posted by Phaedrus2129 View Post
Knock it off, you're making people waste money. I guess a lot of you are newer users, but you could still look at what the more experienced are saying. If the person is going to use a GTX590 or HD6990, sure recommend a 650W. But if they're using an HD6950 or GTS450 or HD6850 and state that they aren't going to SLI/Crossfire, then recommending a 650W or more is wasting their money.

And before saying "they may want to SLI/Crossfire later", first check and make sure that they have a dual slot motherboard in the first place.
Hear, hear!

Quote:
Originally Posted by mikepahl318 View Post
My 700 watt StealthxStream could not handle my 6950 + 1090t overclocked...

FYI
Wow! My crappy DELL 750w psu was able to handle dual GTX 260s (not the 216 SP version) while running a Q9400 @ 3.9MHz 24/7 using a 790i Ultra mobo for over 2 years.
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post #26 of 286 (permalink) Old 06-15-2011, 07:49 AM
 
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This is what I imagine you wanting every time you type.



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post #27 of 286 (permalink) Old 06-15-2011, 07:50 AM
 
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Quote:
Originally Posted by ktf View Post
System Type: 1 physical CPU
Motherboard: Regular - Desktop
CPU: Intel Core i5-2500K 3300 MHz Sandy Bridge
Overclocked: 4500 MHz, 1.3 V
CPU Utilization (TDP): 90% TDP
RAM: 2 Sticks DDR3 SDRAM
Video Card: NVIDIA GeForce GTX 570
Video Type: Single Card

ATTENTION: FOR PERSONAL, NON-COMMERCIAL USE ONLY
IDE HDD 5400 rpm: 5 HDDs
IDE HDD 7200 rpm: 2 HDDs
DVD-RW/DVD+RW Drive: 1 Drive
Sound Blaster w/ Front Bay: Yes
Additional PCI Card (avg): 2 Cards
Fans
Regular: 4 Fans 120mm; 3 Fans 140mm;
Keyboard and mouse: Yes
System Load: 90 %

Minimum PSU Wattage: 585 Watts
Recommended Wattage: 635 Watts

Please note that those numbers are relative and do not include GPU OC. I have a 750 W Corsair and I doubt it would handle perfectly another 570 with full OC on both cards and CPU. And efficiency is at its best at around 50 % of PSU power, so I don't see why we should not recommend 650 W for gaming rigs.

A 650 W PSU holding SLI of 570 ? Are you sure ?
Might I suggest the Corsair AX1200?

http://www.newegg.com/Product/Produc...014&Tpk=AX1200


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post #28 of 286 (permalink) Old 06-15-2011, 07:51 AM
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I just ask Tator Tot if I have any PSU questions...


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post #29 of 286 (permalink) Old 06-15-2011, 07:51 AM - Thread Starter
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Quote:
Originally Posted by prava View Post
Thats a heck of an exception list, mate
True, but what it basically comes down to is that top-end Nvidia cards are usually a little heavy on the power draw and you should go for a 750W for SLI. For AMD/ATI stuff a 650W will almost always do for Crossfire (excluding the 2900XT, which sucked anyways).

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post #30 of 286 (permalink) Old 06-15-2011, 07:53 AM
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Quote:
Originally Posted by ktf View Post
System Type:1 physical CPU
Motherboard:Regular - Desktop
CPU:Intel Core i5-2500K 3300 MHz Sandy Bridge
Overclocked:4500 MHz, 1.3 V
CPU Utilization (TDP):90% TDP
RAM:2 Sticks DDR3 SDRAM
Video Card:NVIDIA GeForce GTX 570
Video Type:Single Card

ATTENTION: FOR PERSONAL, NON-COMMERCIAL USE ONLY
IDE HDD 5400 rpm:5 HDDs
IDE HDD 7200 rpm:2 HDDs
DVD-RW/DVD+RW Drive:1 Drive
Sound Blaster w/ Front Bay:Yes
Additional PCI Card (avg):2 Cards
Fans
Regular:4 Fans 120mm; 3 Fans 140mm;
Keyboard and mouse:Yes
System Load:90 %

Minimum PSU Wattage:585 Watts
Recommended Wattage:635 Watts

Please note that those numbers are relative and do not include GPU OC. I have a 750 W Corsair and I doubt it would handle perfectly another 570 with full OC on both cards and CPU. And efficiency is at its best at around 50 % of PSU power, so I don't see why we should not recommend 650 W for gaming rigs.

A 650 W PSU holding SLI of 570 ? Are you sure ?

Single GTX570 system, would draw around 470w. A 650w is more than enough.
These PSU calculators are pretty bad, and overrated, also if its from a PSU manufacturer, they are going to make money by convincing you to buy a bigger PSU.
A quality PSU will put out its rated wattage and more, so why waste the extra money?
I had a Corsair CX430 V1 running SLI 8800GT's

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