3rd most expensive. behind my CPU and GPU
Quality PSUs, how much is considered enough overhead
- Thread starter MrWhippy
- Start date
3rd most expensive. behind my CPU and GPU
For most PC's with one graphics card 300W, add 200W per extra graphics card, then add 40%
Therefore
1GFX = 450 - 500W
2GFX = 700 -750W
3GFX = 1000W+
simple really. The rest is epeen or other special kit you need.
andy.
Therefore
1GFX = 450 - 500W
2GFX = 700 -750W
3GFX = 1000W+
simple really. The rest is epeen or other special kit you need.
andy.
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So would my 800W be enough to run xfire 6950 unlocked + 2500k @ 4.5 GHz + water cooling single loop + 6 fans + 4 HDDs?
I would not use a 650w for Xfire 6950's, I'm struggling with a 750w at the moment, might be getting a 1.2kw to male sure my whole setup definitely has enough power, me getting water-cooling means only one thing...
HUGE ******* OVERCLOCKS!
HUGE ******* OVERCLOCKS!
cheers brah
EDIT: crikey, if I've filled this out right I've got a recommended 331W PSU and if I add in another 5770 I'll only need a 390W PSU....madness...
Not madness, truth. PSU's are usually massively overspecified for what they have to do. You can run a system with no add in cards on a 250W supply no problem.
It's only when you start adding cards with loads of additional PCIe cables or heavy overclocking that you need a monster supply. The rig in my sig comes out as 650W on that calculator due to needing four six pin PCIe cables, and having a big overclock.
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The efficiency affects the power taken from the wall, not the power supplied to your components.
I purchased a wall power monitoring strip, the system draws 280w at idle, 530w when gaming.
Full system spec
i7 920 @4.2ghz
6 gb ocz reaper
Asus p6t dlx v2
Gtx 470 sli
Asus xonar dx audio card
2 x 7200 rpm hdd's
LG blu ray drive
fan controller, 6 fans
Corsair hx 850w psu.
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Effeciency is vital when considering what wattage psu you need after using such websites as i posted.
How so?
An 800W PSU with 80% efficiency will supply 800W (if it's a good one). It'll draw 1000W from the wall to do that though. The 80% doesn't mean it can only supply 640W.
Thats the one i initially ordered RJC, unfortunately they were out of stock for ages. Finally settled on this one here.
Very handy for measuring total system power use, such as monitor and speakers as well. Also has a cost per unit function built in, havent dare look at that one though tbh.
Very handy for measuring total system power use, such as monitor and speakers as well. Also has a cost per unit function built in, havent dare look at that one though tbh.
Thats the one i initially ordered RJC, unfortunately they were out of stock for ages. Finally settled on this one here.
IMG]http://i164.photobucket.com/albums/u16/setter123_photos/N35HN_inuse.jpg[/IMG
Very handy for measuring total system power use, such as monitor and speakers as well. Also has a cost per unit function built in, havent dare look at that one though tbh.
That looks quite handy, problem with my one the screen needs to be up top as you need to pull the cable to one side to have a look!
I have a British Gas energy monitor which clips onto the mains coming into the fuse box and this give me a indication of rough costs day to day.
Like you I don't look very often
