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post #6811 of 9343
Quote:
Originally Posted by chillidog View Post

a 520 psu is very very bare min.these day's even with your 650w .
with your set up
MB: Asus PZ68 PRO/GEN3,
CPU: i2500k,
RAM: 2x4 GB Patriot Viper Extreme 2133 MHz,
VGA: Sapphire 6950,
Silicon Power SSD (old Win7 install on it)
HDD WD (old Ubuntu install on it)
you would need at the most a 700 upwards.try this link and work out how much power supplie you would need:http://www.thermaltake.outervision.com/Power

I'm starting to sound like a broken record saying this but... A quality 500 watt power supply will power ANY CPU + single GPU system on the market with room for overclocking. A 6950 will draw 200 watts and an i5 2500K will pull slightly over 100. Thats 300 watts in worst case scenario, realistically while gaming you're looking at around 275 real usage... how does that justify a 700 watt power supply? Simple, It doesn't.
Edited by Jayjr1105 - 3/16/12 at 6:03am
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post #6812 of 9343
Quote:
Originally Posted by kristink041180 View Post

I seem to be having several issues with my system. One seems to be I can't install Linux. It seems to get as far as detecting USB devices and just sits there after that doing nothing at all.

I ran into the same problem with Xubuntu 11.10 x64. Setting the "acpi=off" boot option allowed startup to complete. At that point I installed, made sure the kernel was updated, and it was then able to boot Linux off the hard drive without any special boot options.
post #6813 of 9343
Quote:
Originally Posted by Jayjr1105 View Post

I'm starting to sound like a broken record saying this but... A quality 500 watt power supply will power ANY CPU + single GPU system on the market with room for overclocking. A 6950 will draw 200 watts and an i5 2500K will pull slightly over 100. Thats 300 watts in worst case scenario, realistically while gaming you're looking at around 275 real usage... how does that justify a 700 watt power supply? Simple, It doesn't.

The key word in your quote is a "quality" PSU. Something a lot of people forget is that it is not just the wattage but your manufacturer that makes a difference, Different power can go to different rails, the components can be inferior, your home electrical can also come into play.
post #6814 of 9343
The back blue usb 3.0 ports on my mobo(P8Z68) wont detect my external hard drive?They detect my mouse and keyboard though.Any fix for this?
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post #6815 of 9343
Quote:
Originally Posted by raxf View Post

The back blue usb 3.0 ports on my mobo(P8Z68) wont detect my external hard drive?They detect my mouse and keyboard though.Any fix for this?

Make sure you install the usb 3.0 drivers. Sometimes they will work with legacy stuff like keyboards and mice but won't power on hard drives.
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post #6816 of 9343
Quote:
Originally Posted by MooMoo View Post

I maybe remember it wrong way on that old post. You have to calculate the VID from manual voltage and your desired multi. I quoted some info here:
Quote:
Once you know what vcore you require under load, using cpu-z you can work out the offset by using the VID. When running your cpu under load to read vcore, you can do the same to read the VID. That can be achieved by running prime with cpu-z and realtemp. The difference between the load voltage in cpu-z and the VID you see in realtemp is the offset amount you're looking for.
For example if your VID is 1.3875 under load and your cpu-z vcore under load is 1.4275, the offset will be a positive amount from the VID, so it'll be +0.040 (1.3875 + 0.040 = 1.4275)
If the VID is 1.3875 and your cpu-z vcore is lower, say 1.3675, the offset will be a negative value of from the VID, which is -0.020 (1.3875 - 0.020 = 1.3675)
Rep is always welcome lachen.gif

Thanks !
+ Rep - very good info !biggrin.gif
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post #6817 of 9343
Quote:
Originally Posted by Jayjr1105 View Post

I'm starting to sound like a broken record saying this but... A quality 500 watt power supply will power ANY CPU + single GPU system on the market with room for overclocking. A 6950 will draw 200 watts and an i5 2500K will pull slightly over 100. Thats 300 watts in worst case scenario, realistically while gaming you're looking at around 275 real usage... how does that justify a 700 watt power supply? Simple, It doesn't.

simple the 700w will be plenty i agree on that.
a simple work out on his system set up in which you haven't included any sata drives,harddrives,fans,cd/dvd drives .would give him just under 400w and just giving him a small amount to work with oc. agree?
now if he wanted to go c/f and so on he be pushed.
a 700w or a true power 650 w would give him alot of leave way and a few $ more will last him for future upgrades if need be.by the way did some looking around the 6950 can draw anything from 250-280 watts on full load
post #6818 of 9343
Quote:
Originally Posted by Jayjr1105 View Post

I'm starting to sound like a broken record saying this but... A quality 500 watt power supply will power ANY CPU + single GPU system on the market with room for overclocking. A 6950 will draw 200 watts and an i5 2500K will pull slightly over 100. Thats 300 watts in worst case scenario, realistically while gaming you're looking at around 275 real usage... how does that justify a 700 watt power supply? Simple, It doesn't.

Remember HDDs and fans! + Other misc they need power too tongue.gif
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post #6819 of 9343
Quote:
Originally Posted by chillidog View Post

simple the 700w will be plenty i agree on that.
a simple work out on his system set up in which you haven't included any sata drives,harddrives,fans,cd/dvd drives .would give him just under 400w and just giving him a small amount to work with oc. agree?
now if he wanted to go c/f and so on he be pushed.
a 700w or a true power 650 w would give him alot of leave way and a few $ more will last him for future upgrades if need be.by the way did some looking around the 6950 can draw anything from 250-280 watts on full load
Quote:
Originally Posted by MooMoo View Post

Remember HDDs and fans! + Other misc they need power too tongue.gif

I'm not just spatting out numbers without any knowledge, research, or experience. I have a kill-a-watt meter at home and have done a lot of testing with it. My sig rig pulled a max of 420 watts while running Prime95 and Furmark at the same time. I also have a new system I just built that has a GTX 480 (A power hog) a phenom quad, fans, hard drives, etc. and it pulled 300w even running Heaven 2.5 benchmark. Systems just don't pull what people think they'll pull, especially with newer tech making everything more efficient and lets face it, PC building is expensive, why recommend the user spend $50 more than they have to when they can get a quality 550w for ~$50.

Edit: And remember, the power pulled from the wall needs multiplied by 85% thus lowering the power pull even more.
Edited by Jayjr1105 - 3/16/12 at 12:29pm
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post #6820 of 9343
Quote:
Originally Posted by Jayjr1105 View Post

I'm not just spatting out numbers without any knowledge, research, or experience. I have a kill-a-watt meter at home and have done a lot of testing with it. My sig rig pulled a max of 420 watts while running Prime95 and Furmark at the same time. I also have a new system I just built that has a GTX 480 (A power hog) a phenom quad, fans, hard drives, etc. and it pulled 300w even running Heaven 2.5 benchmark. Systems just don't pull what people think they'll pull, especially with newer tech making everything more efficient and lets face it, PC building is expensive, why recommend the user spend $50 more than they have to when they can get a quality 550w for ~$50.
Edit: And remember, the power pulled from the wall needs multiplied by 85% thus lowering the power pull even more.



Here is Guru3D's power supply recommendation:

GeForce GTX 480

On your average system the card requires you to have a 650 Watt power supply unit.

GeForce GTX 480 in SLI

A second card requires you to add another 250 Watts. You need a 900+ Watt power supply unit if you use it in a high-end system (1 KiloWatt recommended if you plan on any overclocking).
For each other card (3-way SLI) that you add, just add another 250 Watts and 20A on the 12V rails as a safety margin. What would happen if your PSU can't cope with the load? Here are some pointers:

bad 3D performance
crashing games
spontaneous reset or imminent shutdown of the PC
freezing during gameplay
PSU overload can cause it to break down

please check link : http://www.geforce.com/Hardware/GPUs/geforce-gtx-480/specifications

the op doe's not need to take my advice or yours,he is his own person to make his mind up .time will tell if he needs to up his psu or not.

end of story.
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