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Purchased 6750HD.. 300W PSU enough?

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January 17, 2012 1:44:05 PM

Hi guys tthis is my first post in this website...
Just joined..
So i jus purchased a Radeon 6750 (due to get it shipped on friday)..
I jus have 300Watts Native psu..
Is it enough???
I jus opened the case of my pc and it has 19A max on 12v railings..
My PSU is from HCL (Hindustan Computers Limited) a premier computer manufacturer of India so i think it isnt bad.. but stil i dont want to take risks...

My system specs are:
Core2Duo @2.2ghz.. i have OC to 2.9
2gb Ram (have ordered 2gb more along with the gpu)
Gigabyte S series motherboard with 945 series chipset.
160gb HDD..

And coulpe of ques..
Wil i be able to play Gta 4? my max screen res is 1400x900..
If i have to buy another psu than 500W enough?

And can i purchase another HDD and use it with the existing one? like use both?

Thanks guys plz reply soon :) 
January 17, 2012 2:07:47 PM

The power supply you have will most likely work (as long as it can provide that power continuously not total max) but I would not trust it as its close and if it dies it could take alot of your other components with it. Also a quality power supply can supply most of its rating to the 12V rail not 2/3rds of it.
January 17, 2012 2:09:39 PM

I don't want to take the risk. I think it is better to get a Power supply that has atleast 24A on the 12v rail.
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January 17, 2012 8:06:07 PM

No, you won't need a 500W PSU, but I would Greatly Recommend you buying a Quality brand like Corsair.
(A Quality brand with lower wattage are better than cheap ones with higher wattages since its efficiency is higher than 80% while some cheap ones won't even archive 50%, an 500W PSU with 50% efficiency = 250W)

From what I read your PSU "should" suffice for an 6750, since your CPU's TDP isn't very high. But if your PSU is one of the cheap ones, when it breaks, it could break some parts of your computer.

Also, yes you could definitely play GTA4 with that resolution, even an 6570 can play GTA4 at 720P with mostly High settings.

Hope it helps! :) 
January 17, 2012 9:24:59 PM

It should work just fine unless the PSU is crap. If you don't want to take a chance though I say buy a quality PSU.
January 17, 2012 9:43:36 PM

I really don't think 300w is good enough for that card, you're really risking your whole system with such a low wattage.
January 17, 2012 9:50:12 PM

bloc97 said:
No, you won't need a 500W PSU, but I would Greatly Recommend you buying a Quality brand like Corsair.
(A Quality brand with lower wattage are better than cheap ones with higher wattages since its efficiency is higher than 80% while some cheap ones won't even archive 50%, an 500W PSU with 50% efficiency = 250W)

From what I read your PSU "should" suffice for an 6750, since your CPU's TDP isn't very high. But if your PSU is one of the cheap ones, when it breaks, it could break some parts of your computer.

Also, yes you could definitely play GTA4 with that resolution, even an 6570 can play GTA4 at 720P with mostly High settings.

Hope it helps! :) 


That's actually not how efficiency works, it basically means that when say an Antec Earth Watts 500D is producing its max power output @ 80% efficiency it's taking more watts from the outlet than it's producing. So when it's producing 500 watts its actually taking 600 watts from the outlet because 20% of 500 is 100 and 100 added to 500 is 600 watts which it is actually pulling from the wall.
January 18, 2012 12:42:29 AM

Lol oops I confused that efficiency with something else, sorry... -_-
January 18, 2012 4:05:47 AM

bloc97 said:
No, you won't need a 500W PSU, but I would Greatly Recommend you buying a Quality brand like Corsair.
(A Quality brand with lower wattage are better than cheap ones with higher wattages since its efficiency is higher than 80% while some cheap ones won't even archive 50%, an 500W PSU with 50% efficiency = 250W)

From what I read your PSU "should" suffice for an 6750, since your CPU's TDP isn't very high. But if your PSU is one of the cheap ones, when it breaks, it could break some parts of your computer.

Also, yes you could definitely play GTA4 with that resolution, even an 6570 can play GTA4 at 720P with mostly High settings.

Hope it helps! :) 


It says 250W with a peak of 300W so i thinnk in shud upgrade psu..
Here an Intex or Iball psu of 450W available fpr 25dollars..
It wud be fine?
i dont have more budget than that at the moment....
And u mentioned 6579 can play GTA so that means my GPU can do more btter?

And last can i use another HDD with my pc?
like dual HDD? I dont want to take out the old one..
January 18, 2012 11:11:38 AM

No, DON'T get Intex or Iball. You can look out for corsair CX and seasonic s12ii. Or at least FSP.
January 18, 2012 11:24:50 AM

get an corsair cx430 or cx500 that psu will be good and intex and iball psu are very cheaper and bad in quality if u will buy an iball psu you will be not able to perform good or may it will get damage in 1year becuz in india iball psu are in sale most of the people are getting but i dont think it would be good just go for an corsair.:) 

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
January 18, 2012 7:25:14 PM

anasahmad17 said:
It says 250W with a peak of 300W so i thinnk in shud upgrade psu..
Here an Intex or Iball psu of 450W available fpr 25dollars..
It wud be fine?
i dont have more budget than that at the moment....
And u mentioned 6579 can play GTA so that means my GPU can do more btter?

And last can i use another HDD with my pc?
like dual HDD? I dont want to take out the old one..


You should buy an psu from an Quality Brand like Corsair, some Intex or Iball PSU aren't reviewed and may have cheap parts inside, just to go to a safe side, buy a quality brand PSU at around ~400W.

Also, yes an 6570 is the low-end North Island cards, but it is able to play any new games, but not at max, neither at 1080P. But your card will definitely be capable of playing GTA4 or more graphic-intensive games like Crysis or Metro 2033 at Higher settings.

Yes, you can add an other HDD, since most motherboards support 4 SATA or 4 IDE inputs, but it will be more power-hungry and it will probably produce 2x the noise.

A AMD graphic card numbering is somewhat confusing for newcomers, since they want to trick some of their customers when they can.

The First number (4xxx 5xxx 6xxx) is the Generation of the GPU, higher is the generation number, more complex codes can be run on it. (Like newer DirectX and OpenGL versions)

The Second number (56xx 57xx 58xx) is the performance level of the GPU, higher it is, better will be the performances in games. (4570 and 5570 should be at a equal performance)
0-2 are usually Intergrated Graphic Chipsets and are ONLY suitable for 2D tasks NOT going to perform well in any general 3D tasks. (6250, 6290)
3-4 are the Low-Low-Low end video cards, they are generally NOT suitable for gaming. (6350, 6450)
5-6 are the Entry Level video cards, they should be capable of playing games at somewhat medium settings. (6570, 6670)
7-8 are the Medium Level video cards, they should be capable of playing games at high settings at 1080P. (6750, 6870)
9 is the High level video cards, they should be capable of maxing out games at higher resolutions than 1080P. (6950, 6970)

The Third number (5550, 5570) is the performance level of the GPU at a smaller scale, higher it is, better will be the performances in games. (5570 should be just a little ~3% better than the 5550) People usually don't care about this number since just a little overclock or an BIOS flash can trick the card into an other one. (Like flashing the 6950 into an 6970)
An exception is when the second number is an 9 and the third number is also an 9, it usually means a dual-GPU card. (Just like two cards in crossfire but in only one slot, it also usually perform better than CrossFire.)

The Last and Fourth number is currently unused by AMD.

So in conclusion an card like the 4970 is way way better than an 6370 performance-wise, some people that are more ignorant may do this mistake and buy an unusable card.
January 20, 2012 11:47:20 AM

I got a new PSU.... It has 450W power output but i am not reallyy sure if i shud use it...
here is whats written on it.. please tell if it will work fine..

+5V: 34A, 12V: 14A, -5V: 0.5A, -12V: 0.8A, 3.3V: 28A, +5VSB: 2A TOTAL: 450W

Also,
My GPU arrived today...
Everything is fine but the problem is it wasnt shipped with 6pin PCI E connector and in my city i cudnt find one.. so i am not able to power up my gpu..
What shpuld i do...
The Brand is XFX...
I thooght it wil come atleast with the reqquired cables..
January 20, 2012 12:26:02 PM

That power supply has less power on the 12V rail than the 300W one so I advise don't use it. A 450W power supply should have around 34A on the 12V rail not 14A and should have at least 1 PCIE connector.
January 20, 2012 1:08:25 PM

simon12 said:
That power supply has less power on the 12V rail than the 300W one so I advise don't use it. A 450W power supply should have around 34A on the 12V rail not 14A and should have at least 1 PCIE connector.


My old power supply (300W) is a Branded one...
The problelm is the shop from where i bought the new PSU isnt understandint that good power means more amperage on 12v rails... he is saying more the wattage better the supply..

So my new one is crap i guess coz 14A is pretty uselss and its a generic brand..
It doesnt even have dual rails for 12v.

So guys shud i stay with my old PSU?
i want to mention that i saw this on my old psu label again..


It has dual 12v rails and it was written..
Max Amperage on 12V1 raill is 10Amperes
Max Amperage on 12V2 rail is 14Amperes

So that means a total of 24A on both the rails... a 10A increase over my new PSU...

So should i stay with it?


I dont have money left to buy another PSU... :(  i have used all my pocket money for GPU and RAM upgrade...


So please say that it wil somehow work on old psu...
Meaing my 300W is better than new 450W...
January 20, 2012 1:15:00 PM

14A on the +12V rail? The max output is not 450W definitely, and it would be obvious that it doesn't come with a PCI-E. The max output will be around 175W-200W I think. Get a new PSU and next time try gathering some information first about a Power Supply before getting one :)  and don't be tricked by a store guys... Your Old one is better but sadly it still won't work :( , if it does it will risk your component.
January 20, 2012 1:24:00 PM

^+1
January 20, 2012 5:08:49 PM

If i have to decide btw the two..
which should i go with?
Max TDP of my processor is 65W, Max TDP of GPu is 85W...
these two mattr i guess...
so as far me thinks my old psy btr with 19A on 12v rail? or the power output wil be a bottleneck?
!