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Need a solid 500W PSU for the Radeon HD 6850.

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June 9, 2012 9:13:49 PM

Hi guys. I'm looking for a new PSU that will work good with my system and won't die on me for 2 years or so. I currently have an Xilence XP500 R3 Redwing series and i want to put it in my other build and get a new one for my gaming rig. I need a good 500W PSU (if that's not enough maybe 550W or 600W) i was thinking about getting an Antec Earthwatts 500W Green but i don't like the 80mm cooler it has but is it good enough to run my system without killing it or do i need something stronger?
Specs: AMD Radeon HD 6850
AMD Phenom II X4 965 BE
MSI 870S-C45
4gb of Transcend DDR3 RAM
160gb Seagate barracuda 7200rpm
Pioneer DVD RW (ATA)
June 9, 2012 9:22:26 PM

Sunius said:
It will easily be enough. I'd even recommend Corsair CX 430 if you want to save some money:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

P.S. May I ask why you need a 500w?


Because i would rather have more power than i need and also because someone wrote on the box of my radeon HD 6850 that i need a minimum 500W PSU
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June 9, 2012 9:45:06 PM

Sunius said:
It doesn't need that. If you want to get more power for future SLI, I'd suggest this one then:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Hmm are you sure? I've had bad experience with Corsair PSU's. One shorted out (a 430W) on an old Pentium 4 rig which worked good after replacing the psu, the other one (500W) got its capacitors blow to pieces when i was building a PC for my friend and after 2 hours of working there was a big boom, the third one for some odd reason wouldn't even power up the machine properly (fans spin at their max speed and both green and red light were on and stayed that way until i turned the PC off. so is there something else other than corsair because i wouldn't like my PC end up having barbecue charcoal parts. and i'm not planing on crossfire or SLI since i don't have enough money for another GPU
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a c 291 U Graphics card
June 9, 2012 9:50:20 PM

Corsair makes one of the best power supplies in the world. They are also very affordable. I am sorry to hear that you had bad experiences with them, but it must have been bad luck.

If you aren't planning to go SLI ever, I hardly see any reason not to go with CX 430 - it's cheap, reliable and your realistic power usage will not ever go above 250-300 watts.
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June 9, 2012 10:10:45 PM

Sunius said:
Corsair makes one of the best power supplies in the world. They are also very affordable. I am sorry to hear that you had bad experiences with them, but it must have been bad luck.

If you aren't planning to go SLI ever, I hardly see any reason not to go with CX 430 - it's cheap, reliable and your realistic power usage will not ever go above 250-300 watts.


Well this is against my every instinct it looks like i have to risk my rig to a cheap PSU. oh well if it works then i'll just run a little stress test with furmark on both PSU's and see if the 430 is as stable as the Xilence XP500 2 year old PSU. I also don't see the reason why the CX430 has an 8pin VGA and CPU connections if its a 430W PSU. my Xilence doesn't have a single 6pin and only 2 molex connectors.
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a c 291 U Graphics card
June 9, 2012 10:17:43 PM

It's a quality power supply, that's why. Just because CX 430 is relatively cheap, it doesn't mean it is made out of cheap materials. I recently installed it to one PC - it really feels like a quality product. As I said, Corsair makes one of the best power supplies in the world.

Check this:
http://www.hardwaresecrets.com/article/Corsair-CX430-V2...
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June 9, 2012 10:26:49 PM

Sunius said:
It's a quality power supply, that's why. Just because CX 430 is relatively cheap, it doesn't mean it is made out of cheap materials. I recently installed it to one PC - it really feels like a quality product. As I said, Corsair makes one of the best power supplies in the world.

Check this:
http://www.hardwaresecrets.com/article/Corsair-CX430-V2...


I agree that they do but their PSU's just don't work for me. its like they hate me or something xD but what i'm worried about is can a 430W PSU handle a heavily overclocked and 6th core unlocked Phenom II X4 965 and a Radeon HD 6850. Btw my luck was exactly with the Xilence PSU though many people say its crap but it looks like it wasn't crap to me. I personally think that some people just have a heavy dose of luck for some unimaginable things to happen to them like one of my friends managed to run a GTX 460 on a nonamed 350W psu.
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a c 291 U Graphics card
June 9, 2012 10:56:17 PM

That seasonic is a very decent unit as well.

Your system will not draw over 300 watts of power. That phenom will consume at most 160 watts, while HD 6850 will consume around 100 watts at full load. What's left? Hard drives use around 20 watts. That's it!
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a c 185 U Graphics card
June 9, 2012 10:57:40 PM

Lazar_99 said:
How about i just buy this one http://www.newegg.com/Product/Product.aspx?Item=N82E168...
don't worry about newegg, i'm in serbia so even if i wanted to i couldn't buy from newegg but the PSU on that link is available in stores here
no i wouldn't get that one you want a 80 PLUS BRONZE Certified... or higher
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a c 185 U Graphics card
June 9, 2012 10:58:54 PM

Sunius said:
That seasonic is a very decent unit as well.

Your system will not draw over 300 watts of power. That phenom will consume at most 160 watts, while HD 6850 will consume around 100 watts at full load. What's left? Hard drives use around 20 watts. That's it!
+1 ;) 
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June 9, 2012 11:01:13 PM

bigcyco1 said:
no i wouldn't get that one you want a 80 PLUS BRONZE Certified... or higher


it says that its 80 plusbronze certified
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a c 291 U Graphics card
June 9, 2012 11:01:53 PM

Lazar_99 said:
How about i just buy this one http://www.newegg.com/Product/Product.aspx?Item=N82E168...
don't worry about newegg, i'm in serbia so even if i wanted to i couldn't buy from newegg but the PSU on that link is available in stores here


Don't get it. Chieftec isn't a quality brand. Check this for power supply ratings:
http://www.xtremesystems.org/forums/showthread.php?1080...

I would not with anything that's not in the list or lower than Tier 3.
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June 9, 2012 11:02:17 PM

Sunius said:
That seasonic is a very decent unit as well.

Your system will not draw over 300 watts of power. That phenom will consume at most 160 watts, while HD 6850 will consume around 100 watts at full load. What's left? Hard drives use around 20 watts. That's it!


good one. the radeon HD 6850 draws 144 watts when idle. on load can reach more than 200W
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a c 291 U Graphics card
June 9, 2012 11:04:06 PM

Where did you get that info from? Those readings are for whole system!

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June 9, 2012 11:07:13 PM

Sunius said:
Don't get it. Chieftec isn't a quality brand. Check this for power supply ratings:
http://www.xtremesystems.org/forums/showthread.php?1080...

I would not with anything that's not in the list or lower than Tier 3.


yo my current PSU is as good as that seasonic one and probably better than the 430W C psu. i should just buy the cheap 430W C for my other rig then.
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a c 291 U Graphics card
June 9, 2012 11:18:33 PM

For people who buy power supplies like these:
http://www.tomshardware.com/reviews/low-cost-psu-pc-pow...

The HD 6850 gets power from the PCIe slot and one 6-pin connector. PCIe slot can deliver up to 75 watts of power, and 6-pin connector can deliver 75 watts too. So 150 watts is theoretical maximum that the card MAY use, but if they card was even close to that, they would not risk it and put two 6-pin connectors for maximum of 225 watts.

Also, your current power supply isn't good at all. It has 22 Amperes of power on 12v rail. The corsair CX 430 has 28 amperes and the seasonic has even more. Plus you don't have a 6-pin connector so you cannot use it for your HD 6850.
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a c 185 U Graphics card
June 9, 2012 11:28:33 PM

Give us a link to the store your going to buy the psu from and will pick a good one for you
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June 9, 2012 11:33:00 PM

Sunius said:
For people who buy power supplies like these:
http://www.tomshardware.com/reviews/low-cost-psu-pc-pow...

The HD 6850 gets power from the PCIe slot and one 6-pin connector. PCIe slot can deliver up to 75 watts of power, and 6-pin connector can deliver 75 watts too. So 150 watts is theoretical maximum that the card MAY use, but if they card was even close to that, they would not risk it and put two 6-pin connectors for maximum of 225 watts.

Also, your current power supply isn't good at all. It has 22 Amperes of power on 12v rail. The corsair CX 430 has 28 amperes and the seasonic has even more. Plus you don't have a 6-pin connector so you cannot use it for your HD 6850.


20amps on each 12v rail and has 2 12v rails so that's 40 amps and i don't have a 6pin connector but i use a 2 molex to 6pin adapter
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a c 106 U Graphics card
June 9, 2012 11:37:20 PM

Lazar_99 said:
And may i ask you will the i3 2100 bottleneck my 6850?



Im using an i3-2120 and a 7850 you tell me O_o
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a c 291 U Graphics card
June 9, 2012 11:37:27 PM

No it will not bottleneck.

Lazar_99 said:
20amps on each 12v rail and has 2 12v rails so that's 40 amps and i don't have a 6pin connector but i use a 2 molex to 6pin adapter


That's not how it works. You can't add them up because then it would exceed your total PSU wattage. Usually, you can take higher out of two rails and add 10% to it. That's it. That's how it is with bad quality power supplies.
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a c 235 U Graphics card
June 9, 2012 11:38:26 PM

Lazar_99 said:
20amps on each 12v rail and has 2 12v rails so that's 40 amps and i don't have a 6pin connector but i use a 2 molex to 6pin adapter



you don't add amps on a split rail to see total amps on the rail. also, PSU are not governed by any body so I can take a crappy 300w and sell it as a 500w (see your Xilence)

if it makes you feel any better that corsair 430w can deliver 517w (see the link) which is more power, at a better efficiency, and higher temperature then the chieftec unit you linked or the Xilence

http://www.hardwaresecrets.com/article/Corsair-CX430-V2...

FYI, the antec EA500 has plenty of power for your system and the 80mm won't be an issue since you will hardly be pushing the PSU. It's a better PSU (slightly) then the corsair 430w
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June 9, 2012 11:49:14 PM

ct1615 said:
you don't add amps on a split rail to see total amps on the rail. also, PSU are not governed by any body so I can take a crappy 300w and sell it as a 500w (see your Xilence)

if it makes you feel any better that corsair 430w can deliver 517w (see the link) which is more power, at a better efficiency, and higher temperature then the chieftec unit you linked or the Xilence

http://www.hardwaresecrets.com/article/Corsair-CX430-V2...

FYI, the antec EA500 has plenty of power for your system and the 80mm won't be an issue since you will hardly be pushing the PSU. It's a better PSU (slightly) then the corsair 430w


like i said the xilence is doing its job as good as ever for 2 years now. and why the F is that corsair labled a 430W psu if it outputs 517W? man this is childish. i've been attacked by corsair fanboys. OK i'll buy the 430W C and if it dies on me like the 3 previous C psu's i had then its gonna meet my sledge hammer or axe.
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a c 291 U Graphics card
June 9, 2012 11:51:07 PM

We're giving you friendly advice. You may take it or not. But trust me, the advice is good.
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June 9, 2012 11:52:57 PM

Sunius said:
We're giving you friendly advice. You may take it or not. But trust me, the advice is good.


is there a better CX series PSU than the 430W version? at least 500W or more?
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a c 106 U Graphics card
June 9, 2012 11:53:08 PM

Lazar_99 said:
like i said the xilence is doing its job as good as ever for 2 years now. and why the F is that corsair labled a 430W psu if it outputs 517W? man this is childish. i've been attacked by corsair fanboys. OK i'll buy the 430W C and if it dies on me like the 3 previous C psu's i had then its gonna meet my sledge hammer or axe.


because its 100% better to understate your psu than to over state. if you understate, it will 100% always work at 430 then, since its known to go higher. if you overstate, it will explode.
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a c 291 U Graphics card
June 9, 2012 11:54:56 PM

Lazar_99 said:
is there a better CX series PSU than the 430W version? at least 500W or more?


There is CX 430, CX 500 and CX 600.

500 and 600 watt models come with two 6+2 pin connectors.
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June 9, 2012 11:57:11 PM

Sunius said:
There is CX 430, CX 500 and CX 600.

500 and 600 watt models come with two 6+2 pin connectors.


will come in handy for my next GPU upgrade in 2 years or so. CX500 it is... if i can find it here in serbia lol
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