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Chrno

join:2003-12-11
reply to jchambers28

Re: [Parts Check] 850 watt PSU

Canada, shipping is at least $30-40 which makes the price on newegg very decent.


jchambers28

join:2007-05-12
Alma, AR
sorry for all the questions I have not bought a PSU in 5 years.
The person who I built a system for today already had a corsair ax850 I installed for him a few months ago. I want one but dont have the cash flow for one of those.

Chrno

join:2003-12-11
The AX series isn't all that great. I have encountered more DoAs than I would like for a flag ship SKU from Corsair but the completely modular feature makes up for any defects the AX series have. If the thing fails, just unplug the cables and swap it out. No need to redo the cable management etc. It's clean and easy to maintain.

As for a choice between the HX1050 and the CoolerMaster. You have to ask yourself the following question:
Is the extra 2 year warranty and more quiet fan at full load worth the extra $60?


jchambers28

join:2007-05-12
Alma, AR
Reviews:
·Cox HSI
·Cricket Broadband
·AT&T Wireless Br..
reply to jchambers28
I chatted with Kyle Bennett over at [H] for a while this morning about the latest and greatest crop and power supply's. he told me to get a Antec 900 watt PSU. And skip the corsair. What it seems to me like corsair is slipping in the QC dept.

Here is the one Kyle told me to get.

»www.newegg.com/Product/Product.a···17371050

Chrno

join:2003-12-11
No, I would not get that one. I had more than one that buzzed at 40% load. Pick something else or go with the CoolerMaster or the Corsair


jchambers28

join:2007-05-12
Alma, AR
I wonder why kyle told me to go with that one?
you know who kyle is don't you.


Krisnatharok
Caveat Emptor
Premium
join:2009-02-11
Earth Orbit
kudos:12
bronze?


jchambers28

join:2007-05-12
Alma, AR
yes

Mister_E

join:2004-04-02
Etobicoke, ON
Reviews:
·Bell Sympatico
reply to jchambers28
Don't overlook the XFX PSU.

If it's still like the original version, it's really a SeaSonic and has gotten favorable reviews...also, as long as you're happy with 850W.

I'm running the original version (with the ugly green fan - but no big deal for me since I have an Antec 300 case) and happy with it.


jchambers28

join:2007-05-12
Alma, AR
could one run a pair of 7950 GPU's on it with out trouble?


sk1939
Premium
join:2010-10-23
Mclean, VA
kudos:10
Depending on your system specs, I would hesitate to say yes, since the 7950's draw 280W under load each. That's 560W just for the graphics cards, so it depends on what else you are running.

Mister_E

join:2004-04-02
Etobicoke, ON
Reviews:
·Bell Sympatico
reply to jchambers28
A quick search claims that AMD recommends 700W for a 7950 in crossfire config (Toms Hardware, Guru3D). 4 PCI-E connectors with 46A+ on the 12V rail.

From what I found on the AMD website, they only list the single card recommendation of 500W.

The XFX 850W puts out 70A on the 12V rail.

Depending upon the rest of your system, 850W may or may not cut it.


jchambers28

join:2007-05-12
Alma, AR
Reviews:
·Cox HSI
·Cricket Broadband
·AT&T Wireless Br..
so how do I get keep from getting the wrong PSU that has enough watage for my needs?

the xfx 850 has the capability of pulling 1025 watts from the wall.

1.79 0.98 19.42% 20% Light 202.10 11.8/0.1 3.3/3 5/3.1 5.1/0.5 171.48 84.85%
4.33 0.99 10.66% 50% Typical 494.00 11.8/0.2 3.3/7.6 5/7.6 5/1.3 427.59 86.56%
8.93 1.00 5.61% 100% Full 1025.20

Here is the sheet.

»www.plugloadsolutions.com/psu_re···port.pdf

Chrno

join:2003-12-11

2 edits

1 recommendation

For starters, you have to interpret the information correctly. 1025w is the input power and since the unit is not 100% efficient, as shown by the report, the output power is only 851w which to XFX's credit, is not all that bad (83% efficiency). However, I very much doubt the unit can sustain this type of output for long before either bursting into flames or just shut itself off (the latter is the likely outcome).

This might sound a bit deja vu but here it is again. Don't crossfire or SLI low-end or mid-range cards. Aim for single high-end SKUs. I am not telling you to jump out and get a 7970/6990 or 590/580. Consider cards like the 7950, 570. If you crossfire or SLI these cards, I believe you getting an ultra high-end PSU is justified but getting a kw PSU to crossfire 5770? Don't be ridiculous. You pay extra for a big PSU, it sucks up more power, it generates more heat, it generates more noise and for what? You get the performance of a 580 IF the game is optimized for crossfire/SLI? A single 7970/580 can be powered by a good 500w.


Krisnatharok
Caveat Emptor
Premium
join:2009-02-11
Earth Orbit
kudos:12
said by Chrno:

This might sound a bit deja vu but here it is again. Don't crossfire or SLI low-end or mid-range cards. Aim for single high-end SKUs. I am not telling you to jump out and get a 7970/6990 or 590/580. Consider cards like the 7950, 570.

This needs to be repeated by the OP for hours on end/ad nauseum. Then maybe it will sink in.

A 500w PSU should have no problems powering two 5770s.
--
If we lose this freedom of ours, history will record with the greatest astonishment, those who had the most to lose, did the least to prevent its happening.


Krisnatharok
Caveat Emptor
Premium
join:2009-02-11
Earth Orbit
kudos:12
reply to jchambers28
said by jchambers28:

could one run a pair of 7950 GPU's on it with out trouble?

I thought you had no money. Where are you getting $1000 for GPUs?
--
If we lose this freedom of ours, history will record with the greatest astonishment, those who had the most to lose, did the least to prevent its happening.


Krisnatharok
Caveat Emptor
Premium
join:2009-02-11
Earth Orbit
kudos:12
reply to jchambers28
said by jchambers28:

I wonder why kyle told me to go with that one?
you know who kyle is don't you.

you were name dropping, so I looked it up:

»en.wikipedia.org/wiki/HardOCP
Based on the wiki, I'd rather trust JohnnyGuru and its benchmarks over a website that claims to base its reviews on the non-scientific "end-user experience." However, HardOCP's reviews look like any other site's, with FPS graphs/etc.

So I don't really get it. Bill Clinton could tell you to invest money in underwater cellists, and it wouldn't mean you should.

Instead of dropping names and simply taking a referral, I'd rather look at the relevant PSU reviews and choose one based on my (real) needs, my budget, and then go out and buy the best PSU that fits those two criteria.
--
If we lose this freedom of ours, history will record with the greatest astonishment, those who had the most to lose, did the least to prevent its happening.


signmeuptoo
Bless you Howie
Premium
join:2001-11-22
NanoParticle
kudos:5
A REAL power supply review is based upon tests done with very expensive, commerical equipment that properly and dynamically loads the unit, and tests its output wave. I should think by now the OP should know this, though, so I am just saying it as an FYI for those that haven't done the legwork.

Indeed, I thought he kept saying he couldn't afford the right hardware advised to him only weeks ago? Lottery? Congrats!
--
Join Teams Helix and Discovery. Rest in Peace, Leonard David Smith, my best friend, you are missed badly! Rest in peace, Pop, glad our last years were good. Please pray for Colin, he has ependymoma, a brain cancer, donate to a children's Hospital.


jchambers28

join:2007-05-12
Alma, AR
Reviews:
·Cox HSI
·Cricket Broadband
·AT&T Wireless Br..
reply to jchambers28
I just bought the Antec "green" psu I got tired of running a single 5770.
I am going to hold some cash back and get a xfx 850 pro PSU.
»www.newegg.com/Product/Product.a···17371051
I also got a TV tuner. »www.amazon.com/Hauppauge-WinTV-D···-2-fkmr0

Then my sb6120 cable modem started acting weird . Buying a cisco DPC 3010 from COX. I have been spending money like a drunk sailor this sucks.


Krisnatharok
Caveat Emptor
Premium
join:2009-02-11
Earth Orbit
kudos:12
You bought one PSU just to buy another one very shortly? Lulz.


signmeuptoo
Bless you Howie
Premium
join:2001-11-22
NanoParticle
kudos:5
He keeps making the same mistakes over and over, even when we implore him not to, it seems. You can lead a horsie to water...


jchambers28

join:2007-05-12
Alma, AR
reply to Krisnatharok
it only cost me $50. I can also put it in another system of mine. At $50 it was a steal.


Spork35

join:2011-07-13
Methuen, MA
reply to signmeuptoo
said by signmeuptoo:

He keeps making the same mistakes over and over, even when we implore him not to, it seems. You can lead a horsie to water...

Exactly! You can give a man some wisdom but you make them think. They decide what and how it works for them even if it's in opposition to what they should be doing.
--
"Every once in a while, declare peace....it confuses the hell out of your enemies."


Phantasee

join:2009-08-27
Hammond, LA
reply to jchambers28
Never used Corsair PSU's but I have NEVER had an OCZ PSU go out, yet. I have a 600w I got in 06 still running.