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Help with power supply for amd 6970 hd

Last response: in Graphics & Displays
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October 6, 2011 6:53:04 PM

lads i've built my system, and as graphics car arived(6970) i discovered a problem it needs 6pin(75w) and 8 pin(150w)
i have two six pin so its no problem as for 8pin motherboard is after taking that, how do i asemble 8 pin? friend of mine tellin me 6pin=8pin but acording to some search on internet their not ((The AMD Radeon HD 6970 uses both an 8-pin and a 6-pin PCIe power connector located at the end of the video card on the top corner. AMD didn't tell us what the power supply requirements are, so we pinged XFX and they were happy to let us know. AMD recommends a 550 Watt or greater power supply with one 75W 6-pin PCIe connector and one 150W 8-pin PCIe connector on the Radeon HD 6970. ))
power supply is 850w

More about : power supply amd 6970

October 6, 2011 7:33:42 PM

yes i know it needs 75w and 150w
how can i make 150w on a 8 pin from the other connections? i have one free 6 pin(on the same line as the one pluged in in a graphics card already
power supply is win power plus
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a b U Graphics card
October 6, 2011 7:34:50 PM

If you have an 850 watt, I'm surprised you don't have an 8 pin PCI-E connector for your GPU.

a c 143 U Graphics card
a b ) Power supply
October 6, 2011 7:38:19 PM

listen, if your PSU is a cheap one and unknown brand, it will fire out your whole system when you make a load at your PSU.
and if a 850W PSU doesn't have at least 4×(6 pin) and 4x (6+2pin) it can't handle a Crossfire or a SLI system. or even single powerful GPU.
so if you have a link for your PSU provide it. but i'm afraid i say you'll have to change your PSU
a c 214 U Graphics card
a b ) Power supply
October 6, 2011 7:40:56 PM

What is the make/model of your PSU?

You can use a 6-pin for the CPU power and use the 8-pin from the CPU to use on the GPU.

What CPU do you have?

Don't use the card without all the necessary power connectors
October 6, 2011 7:44:37 PM

cpu is overclocked i7 2600k
power suplly came with the case
i think its one of the cheap ones alrite, any links to the good power supply that would suit
October 6, 2011 7:52:44 PM

purple stank said:
If your O.C.ing it then nvm don't use a 6pin for the CPU power.

What is your budget for a new PSU?

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Are you sure your PSU isn't modular?

i wont be doing anything to graphics card, cpu came over clocked but i have it disabled as i dont use computer for heavy gaming anyway
i'd like to go with strong enough psu just in case i get another 6970 for christmas
a c 143 U Graphics card
a b ) Power supply
October 6, 2011 8:08:57 PM

not until you get the new PSU... for your PC safety :) 
you just plug the 6 pin PCI Express and the 8 pin PCI Express directly from the PSU to the GPU. that's all
October 6, 2011 8:13:53 PM

thanks lads
a c 214 U Graphics card
a b ) Power supply
October 6, 2011 8:16:03 PM

Welcome.

Goodluck.
October 6, 2011 8:18:54 PM

oh also should i order new case aswell as my ones cover slightly touches the top of the procesor's heatsink
a c 214 U Graphics card
a b ) Power supply
October 6, 2011 8:19:49 PM

What heatsink are you using?

Yes get a new one.A bigger case is always better.
October 6, 2011 8:27:05 PM

Noctua NH-D14 Dual Radiator CPU Cooler



a c 143 U Graphics card
a b ) Power supply
October 6, 2011 8:28:31 PM

gedis said:
Noctua NH-D14 Dual Radiator CPU Cooler

aha you got a big monster here, so what's your budget for the case ?
October 6, 2011 8:33:02 PM

not much after i bought that psu, delivery is a killer, 180 euro all in, i think i'll have to take that side door off and introduce it to the hammer :D 
a c 143 U Graphics card
a b ) Power supply
October 6, 2011 8:34:11 PM

sounds like a good option LOL
a c 143 U Graphics card
a b ) Power supply
October 6, 2011 8:41:54 PM

what's your current case ?
October 6, 2011 8:44:57 PM

its only barely touching the cover but its obviuosly aplying small bit of presure to the tips of the cooling rods and that cant be good for the motherboard, also do you know if front usb3 ports will work with usb2 keys or should i get card reader with separate usb2 slots?
a c 143 U Graphics card
a b ) Power supply
October 6, 2011 8:46:46 PM

USB 3 is fully backward compatible with USB 2 devices, so if you plug in USB 2 device in a USB 3 it will work without any problem.
a c 143 U Graphics card
a b ) Power supply
October 6, 2011 8:54:18 PM

one of the CM HAF series will be great for your rig. does the HD 6970 fit properly ?
a c 214 U Graphics card
a b ) Power supply
October 6, 2011 8:56:08 PM

Yah that's a really cheapo case.Especially for such high quality components like your using.
The HAF 912 is fairly cheap but still offers good expandability.The HAF series are really wide so they can accommodate a bunch of really tall coolers.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

The Antec 300 Illusion is also a good option.But if your using the Noctua I suggest going with the HAF to get as much clearance as possible.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
October 6, 2011 9:30:45 PM

ilysaml said:
one of the CM HAF series will be great for your rig. does the HD 6970 fit properly ?

yes it fits, the only thing if i fit secondary hard disc inline with it will be very close to gpu so i'll keep that couple slots below, primary had disc is solid state and very small so no problem at all
a c 143 U Graphics card
a b ) Power supply
October 7, 2011 12:56:02 AM

gedis said:
yes it fits, the only thing if i fit secondary hard disc inline with it will be very close to gpu so i'll keep that couple slots below, primary had disc is solid state and very small so no problem at all

but you still need a decent case for the best fit and better cooling
a c 214 U Graphics card
a b ) Power supply
October 7, 2011 12:57:49 AM

Yah I agree.If you have some extra money you might as well get a new case.It will benefit you in the long run.
October 13, 2011 8:30:18 PM

lads still havin problems, got my power supply today, connected up, screen turns on, windows starts, but it doesnt reconize my video card, card is working as the fan is turning and monitor is working (connected to gpu) i'm using windows 7 64bit, if you going in tom change resolution it says, standart graphics adaptor, did i connected something wrong
October 13, 2011 9:13:22 PM

does anyone know how exactly to connect power to that graphics card
a c 143 U Graphics card
a b ) Power supply
October 13, 2011 9:15:53 PM

what PSU do you have ? you just connect the PCI Express 8pin and the PCI Express 6 pin
October 13, 2011 9:30:09 PM

there isnt 8 pin, only 6+2 pin x3, but i dont think their 150w as 6pin is only 75w and the other extra 2 looks like ground
a c 143 U Graphics card
a b ) Power supply
October 13, 2011 9:34:32 PM

6+2 pin is the (8 pin) hook the 2 pins near their brothers (6pins) and connected it to the GPU, and take a single 6 pin and hook it up to the 6 pin (female) in the GPU
those ones
October 13, 2011 9:37:34 PM

dont work that way, i tried i cant see that suplieing 150w as 6 pin only 75w, i tried to switch bios on the graphic's card, but no luck either, as on my old car i had to switch it to work
a c 143 U Graphics card
a b ) Power supply
October 13, 2011 9:40:31 PM

don't make your own assumption, the 6 pin gives 75W and the 8 pin gives 150W i'm not electrician to tell you how it works. but they supply power as i said and the PCI Express expansion slot itself gives 75W
a c 214 U Graphics card
a b ) Power supply
October 13, 2011 9:47:16 PM

Did you disable the onboard GPU?
October 13, 2011 9:47:45 PM

that card is doing my head in now, what do i do now?
a c 214 U Graphics card
a b ) Power supply
October 13, 2011 9:49:00 PM

Even if it wasn't getting enough power it would just downclock.It would still be recignized by Windows.
October 13, 2011 9:49:21 PM

purple stank said:
Did you disable the onboard GPU?

no, where do i do that? i dont think it was ever on anyway, i was using 4870 before that and i didnt had to disable anything
a c 214 U Graphics card
a b ) Power supply
October 13, 2011 9:50:21 PM

Which mobo are you using again?
a c 143 U Graphics card
a b ) Power supply
October 13, 2011 9:51:51 PM

the on board graphics card is disabled automatically once a discrete GPU is installed, and if it's still on you should hear the PC peeps and everything running normally.

@ gedis what's your problem ? are you having problems getting signal from the GPU ? or you have a windows problem ?
October 13, 2011 9:52:10 PM

''standart vga graphic's adapter'' it says in resulution vindow and if i go to settings its only 16mb
a c 143 U Graphics card
a b ) Power supply
October 13, 2011 9:53:06 PM

that's because you didn't install the GPU driver :S
a c 214 U Graphics card
a b ) Power supply
October 13, 2011 9:53:13 PM

Did you install the drivers for the card?
a c 143 U Graphics card
a b ) Power supply
October 13, 2011 9:54:06 PM

the CD that came with the card, put it in and install driver from it, or give a jump to AMD website and download the latest drivers.
October 13, 2011 9:54:20 PM

ilysaml said:
the on board graphics card is disabled automatically once a discrete GPU is installed, and if it's still on you should hear the PC peeps and everything running normally.

@ gedis what's your problem ? are you having problems getting signal from the GPU ? or you have a windows problem ?

i think its signal from gpu, vindows should have no problems as its only 2 weeks old and never been on internet yet, maybe it needs updates or something?
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