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Will this PSU work with this GPU????

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September 2, 2012 11:33:26 AM

The graphics card: XFX Radeon HD 6870 1GB GDDR5
LINK: http://www.newegg.ca/Product/Product.aspx?Item=N82E1681...
The power supply: OCZ ModXStream Pro 700W PSU
LINK: http://www.newegg.ca/Product/Product.aspx?Item=N82E1681...

The graphics card I stated above requires two 6-pin connectors, so my question is will this power supply work with this graphics card? Does anyone know FOR SURE if this specific power supply (the one I have listed above) has TWO 6-pin connectors?? Will this power supply work with any generic motherboard do you think?

Other PC parts:
ASUS generic HDMI mid-ATX motherboard (it's a pre-built ASUS desktop, which is why I say generic)
Intel Core i5-2320 @ 3GHz

More about : psu work gpu

September 2, 2012 11:54:53 AM

There's not an issue as regarding working, but I do wonder why 700W. 500 or 550W would be adequate, unless you are planning to add crossfire. The OCZ has some "mixed reviews", but some people seem to like it. Personally, I would prefer, perhaps, Corsair or one of the better Rosewill's (the cheap Rosewill's are nothing special)
a b U Graphics card
September 2, 2012 12:08:46 PM

More than enough :)  Won't be a problem..
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a b U Graphics card
September 2, 2012 12:14:21 PM

If you look at the tab marked "details", click on it and scroll down to the part where it says "connectors", you will see that it has "two" PCI-e connectors
September 2, 2012 12:18:22 PM

malbluff said:
There's not an issue as regarding working, but I do wonder why 700W. 500 or 550W would be adequate, unless you are planning to add crossfire. The OCZ has some "mixed reviews", but some people seem to like it. Personally, I would prefer, perhaps, Corsair or one of the better Rosewill's (the cheap Rosewill's are nothing special)


This specific OCZ PSU is $50 (Canadian dollars) right now (after the rebate and discount) and it also seems to be the best (and most powerful) PSU I can find for under $60. I just simply want to make sure that I can run an XFX Radeon HD 6870 (that requires two 6-pin connectors) with this PSU.
September 2, 2012 12:20:31 PM

Thanks everyone for your replies!
September 2, 2012 12:33:05 PM

Yes PSU has 6 pin and 6+2 ( which CAN be used for 8 pin). Bear in mind that, whilst the PSU may be cheap to buy, if it's working well below capacity, it won't be working efficiently (electricity bill), and case will be hotter than it needs to be (or fans will work harder).
September 2, 2012 2:24:23 PM

malbluff said:
Yes PSU has 6 pin and 6+2 ( which CAN be used for 8 pin). Bear in mind that, whilst the PSU may be cheap to buy, if it's working well below capacity, it won't be working efficiently (electricity bill), and case will be hotter than it needs to be (or fans will work harder).


Here's a list of the hardware in the desktop:

- ASUS generic desktop mid-ATX motherboard (don't know the exact model name, sorry.)
- Intel Core i5-2320 @3GHz (turbo up to 3.3GHz) with stock heatsink and fan.
- XFX Radeon HD 6870 1GB GDDR5 (core clock speed @ 900MHz)
- 6GB DDR3 RAM @ 1600MHz
- 2TB of total HDD space (1TB internal HDD, two 500GB external USB HDD's)


Here's what I've researched as being the approx. power usage for all the major parts:

Core i5-2320 - 95W
XFX Radeon HD 6870 1GB - 250W-300W at full load

---THAT'S ALREADY ALMOST 400W RIGHT THERE!!---

Then there's:
2 x 3GB RAM @ 1600MHz - approx. 8W-10W
ASUS motherboard - 20W-60W
Everything else... - let's just round it off at 40W to be safe

So the desktop uses approx. 480W-500W, and I'm getting a 700W PSU, which yes, it's 200W more than my system uses, but isn't it better to have more power than needed as opposed to not enough? 200W of extra power (probably 150W effective approx. if you count the efficiency) doesn't seem like that much extra power, or is it??
September 2, 2012 3:30:50 PM

2727020,8,1347574 said:
Here's a list of the hardware in the desktop:

- ASUS generic desktop mid-ATX motherboard (don't know the exact model name, sorry.)
- Intel Core i5-2320 @3GHz (turbo up to 3.3GHz) with stock heatsink and fan.
- XFX Radeon HD 6870 1GB GDDR5 (core clock speed @ 900MHz)
- 6GB DDR3 RAM @ 1600MHz
- 2TB of total HDD space (1TB internal HDD, two 500GB external USB HDD's)


Here's what I've researched as being the approx. power usage for all the major parts:

Core i5-2320 - 95W
XFX Radeon HD 6870 1GB - 250W-300W at full load

---THAT'S ALREADY ALMOST 400W RIGHT THERE!!---

Then there's:
2 x 3GB RAM @ 1600MHz - approx. 8W-10W
ASUS motherboard - 20W-60W
Everything else... - let's just round it off at 40W to be safe
It is only a question of degree. If you use a PSU calculator, it will suggest 450-500W as a PSU size. Personally, I tend to add around 25% to those suggestions, and probably go for a 600W. That ensures it is adequate, and is also reasonably efficient. Having said that, and I often have this "discussion", others would say there's no point in putting in more than 500W. There is nothing WRONG with putting in more than 600W, and if it gives you more "peace of mind", I'm all for that. The SLIGHT drawback is that, most of the time, the PC will actually be drawing 300W, or even less. All but the best PSU's are horribly inefficient, when working at, or below 50% of maximum load. In the long run, that electric mounts up, that's all.

!