stulid . . . it's less than 1/3 of the price!
im sorry, you have mistaken me for someone who suggested the AX850, again!
i still think a HX range of about 750w is my recommendation.
Long term PSU Choice
- Thread starter Arthalen
- Start date
im sorry, you have mistaken me for someone who suggested the AX850, again!
i still think a HX range of about 750w is my recommendation.
I am just helping Arthalen "examine" the reasons why he is spending such a large premium on this PSU!
Corsair Professional Series™ Gold AX850
£154.99 inc
corsair psu are a quality unit from a quality OEM manufacturer, excellent RMA service, nice long cables,
found the sapphire warranty, its less than halve at 3years
stulid . . . it's less than 1/3 of the price!
im sorry, you have mistaken me for someone who suggested the AX850, again!
Have you got your eyeballs in or?
. . . we are talking about the AX850 and the reasons he is paying the large premium? . . .So basically you are suggesting that Arthalen pay a large premium for something that doesn't appear to benefit him today and is in fact a kinda extended warranty?
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yep.
if true he has made a good selection from the excellent advice on these forums.
not my particular choice, but top notch in any case.
Thanks guys. Off to buy the AX850
if true he has made a good selection from the excellent advice on these forums.
not my particular choice, but top notch in any case.
GPU - 5870 spec or above (looking at a single top end 6xxx series GPU when released)
Hardware Canucks said:
he has made a good selection from the excellent advice on these forums.
Your idea of "excellent advice" and my idea of "excellent advice" could not be further apart! . . . Arthalen appears to be paying a tremendous premium for no good "reason!
. . . and all you do is encourage him? It seems some people have no concept of Bang-for-Buck or Value For money!
. . . oh well I tried! 
Been using a corsair HX520 for years now, bought it when they were just entering the psu market and its been brilliant, from how its boxed, what it came with and its build quality.
You'll be happy with your purchase, although i would have gone with cheaper lower wattage model.
You'll be happy with your purchase, although i would have gone with cheaper lower wattage model.
I did say I'm a fan of high end Single GPU setups. Unlikely to run GTX480 in SLI
Ladies and Gentlemen . . . witness somebody grasping at straws!
In case anybody else is wondering what my point is . . . I am just helping Arthalen "examine" the reasons why he is spending such a large premium of this PSU!
Corsair Professional Series™ Gold AX850
*IMG Snip*
£154.99 inc
It's like my i5 vs. i7 vs. X6 thread all over again, Big.Wayne
There are many reasons I'm spending this amount of money on the AX over something like the Sapphire, or one of the 'lesser' brand PSUs out there.
1) I honestly believe the PSU is the heart of your system - having a great system that doesn't have a potentially weak link in the PSU is a sound foundation to work from.
2) I had a fantastic experience with my last PSU, a Corsair TX750. Corsair have my trust when it comes to PSUs, they get my repeat business.
3) I want a 80+ Gold rated PSU. I want the highest efficiency PSU that money
can buy at 850wattage for a number of reasons:
i. The highest efficiency PSU = less money spent on electricity compared to lesser efficient models, such as the Sapphire and its base 80+ rating. At 50% load, the AX850 is around 91% efficient with a 230v input:
http://www.corsair.com/products/ax850/default.aspx
(Click resources then review the efficiency graph)
And a review of the 80plus certification:
http://www.80plus.org/manu/psu/psu_reports/CORSAIR_CMPSU-850AX_ECOS 2197_850W_Report.pdf
ii. Therefore, the longer the PC is utilised, the more money saved over a lesser efficiency PSU, with even further increased savings over time.
iii. One thing not in all of this thread is that I will leaving my PC on for extended times running 3D renders as well as gaming. That's 100% CPU for extended periods. That's an awful lot of % time spent with above average power draw compared to the usual hours and hours of browsing.
iv. If I'm not working on a 3D render, I'll be gaming, so fairly close to 100% GPU draw instead, and probably pulling similar current levels to iii.
v. For lesser tasks such as email and Internet, I have an netbook which is perfect low power draw PC for such tasks
4) The machine is being built for longevity - I have the resources to build a decent top spec PC to last me 2 to 3 years, I want the PSU to last past that too and into my next upgrade. In a similar vein, I bet there are users out there with the original Enermax Galaxy 1KW unit that are still going strong with SLI'd GTX 480's
5) Longevity = Decent warranty in mind. 7 years is not only a good stamp of confidence from Corsair in their PSU's (backed up by my own personal experience), but also will no doubt be welcome if the PSU does blow 3 or more years down the line.
6) I want a quiet unit that at 'full load' isn't going to cause my PSU to heat up and start spinning a loud noisy fan.
Since 'full load' is the around the 450watt mark, thats nicely just around the 50% efficiency mark of a 850watt PSU. For this AX850, this means an effective noise level of around 13-14DB quoted from manufacturer specs.
To explain further - This was the one fault of the TX750 I had before - with a single ATI 5850 and a Q6600 @ 3.6Ghz, running games at 1920x1080 would cause the PSU to spin up its fan to cope with the heat it was generating supplying the necessary current. On the corsair website, the TX750 is quoted at around 24DB - a much higher noise level in comparison to the AX850.
It would be foolish of me to go for the AX1200, or under 850 to say a 600watt model, due to efficiency reasons and noise @ relevant load levels..
In conclusion - I can't see why I *wouldn't* or *shouldn't* go for the AX850 with the reasons I have listed!
yep.
if true he has made a good selection from the excellent advice on these forums.
not my particular choice, but top notch in any case.
Yep, bought alright.
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Soldato
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BOOM!
Gotta say im with wayne on this one, people go crazy for super expensive PSUs when even running multiple gfx cards in real world conditions is unlikely to stress even a 650w. When folks turn up to lan parties with some insane 1200w psu for absolutely now logical reason it always makes me chuckle, focus your money on things that will improve performance m8y. Yes its worth paying a little extra for a reliable make, but its not worth paying extra for 250w you will never use.
Well, a few years ago i tried to run an s775 q6600 rig, single gpu on a cheap psu, (EZCOOL 500w), It turned on and immediately shut down again. Not saying theres anything wrong with the sapphire, not a brand ive used myself, but i do believe that the psu is the single most important component in the system, therefore id be happy to pay for that quality and assurance, just my 2p's worth.
I agree with you setter, get a good reliable make by all means and look at reviews for anything you spend your hard earned money on. What im saying is that there is no point at all in getting 850w+ PSU for almost anyone, even a top end PC will never use nearly that much power.
Just as an aside on the sapphire pure power 625w, according to this thread,
http://forums.overclockers.co.uk/showthread.php?t=18196021
Theese are enermax psu's rebadged under the sapphire brand name, enermax are a brand that ive always found to be very good, have a 620w liberty in my second rig, going strong after nearly 3 years of 24/7 usage.
http://forums.overclockers.co.uk/showthread.php?t=18196021
Theese are enermax psu's rebadged under the sapphire brand name, enermax are a brand that ive always found to be very good, have a 620w liberty in my second rig, going strong after nearly 3 years of 24/7 usage.
yes it will, have you missed the Furmark chart in this thread?
newer cards use more power than their previous gen,
a 5870 uses more power than a 4890.
a GTX480 uses more power than a GTX280.
a GTX295 uses more than a 8800GX2.
this trend will continue with the ATI refresh.
so your saying you should run a lower wattage psu at nearly max 100% load if you are running sli GTX470/480, a psu is most efficient at approximately 50-75% load, it also helps keep it quiet too.
so if you have a "top end pc" as you called it, a 850w psu is recommended, possibly more if you want to stress your components to check for faults.
anyway this thread is done now, he's made his purchase.
a 5870 uses more power than a 4890.
a GTX480 uses more power than a GTX280.
a GTX295 uses more than a 8800GX2.
this trend will continue with the ATI refresh.
so your saying you should run a lower wattage psu at nearly max 100% load if you are running sli GTX470/480, a psu is most efficient at approximately 50-75% load, it also helps keep it quiet too.
so if you have a "top end pc" as you called it, a 850w psu is recommended, possibly more if you want to stress your components to check for faults.
anyway this thread is done now, he's made his purchase.
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Heh, I think I went off in post ..#5? to go buy the PSU, and here we are over 50 posts later still debating the choice