Originally Posted by smoke2
Planning to buy single R9 290 non-reference design.
I forward my former PSU.
Now I'm wondering to buy a new one.
Do you think it is worth to buy maybe X-850 despite I'm not planning to Crossfire?
I was wondering that maybe in the future when the power of graphic cards will increasing and the manufacturing process will be the same (problems with 20nm chips), there will be requirment for still stronger power supplies?
When I bought my former Enermax 485W in 2006 it was plenty enough wattage, but in 2013 it was too low.
Radeon R9 290 have minimal requirments 750W, I know that is too overwattaged, but maybe next generation will want more watts?
I'm wondering between X-750 and X-850.
Want to stay with him some years, ideally like with my former Enermax (7 years
In my country the price difference between them is 24 EUR.
Originally Posted by EvolveGamingPC
I would go the X-850, I say this is a few reasons. Mainly because as you say you want to be able to keep it for a few years and having a higher wattage extends a PSUs effective life...I hate to use the word future proofing but it kinda is
. Another reason is a PSU is more efficient when the wattage you are drawing is between 100W and it's theoretical maximum power output. For 24 Euros it is definitely worth going to 850 Watts.
lol you guys. I posted a detailed explanation awhile back on why for a single 290 you don't need more then a 650w psu . as long as it isn't a crap psu.
maybe my post could be added to the op somewhere because people keep asking the same questions and recommending overkill psu power.
See my post here with the math to back it up. http://www.overclock.net/t/1436497/official-amd-r9-290x-290-owners-club/11550#post_21421778
I want to add that getting a bigger psu can still make sense like you said in case newer cards use more power or you want to add a second card later. However to the other guy i'm not even hitting 475W usage on a 650W psu (with my heavily oc'ed cpu at 100% and oc'ed gpu at 100% and a water cooling loop)
so that isn't going to effect the life span on the unit at all. Remember too these are designed to handle up to their max output 24//7 and it's something of a myth in my opinion that running a (quality) psu at max capacity lowers it's life span.Edited by HardwareDecoder - 12/27/13 at 9:35am