Is my PSU going to support 7750

My System configs are as follow:
Intel i3 2120
Asus P8H61-M motherboard
4GB DDR3 RAM
500 GB WD Cavier Blue
DVD RW Drive
LG E1940 Monitor with 1360X768 max resolution.
PSU Zebronics 450W (+12V@15A)

I'm not a hardcore gamer so I'm thinking about buying HD7750. The only thing I worried about my PSU.

On doing a little research I found that I have to calculate my PSU power requirement like this:

CPU max power req. 65W
GPU's max power req. 55W (I'm not sure about this)

Total power req. 120...devide that by 12

So I need 10A + 5A i.e. total 15A minimum on 12V rail which I have on my PSU

but I'm not so sure about this..so please help..

should I upgrade my PSU or will it work?

If I should then which PSU you would suggest?
29 answers Last reply
More about support 7750
  1. I'd be very wary about putting anything more in that system with that PSU, 12V@15A isn't even close to the claimed rated power output. If you're looking to buy a new PSU, check out Seasonic or the Rosewill Capstone/Fortress series.
  2. The HD 7750 only draws about 50 watts when gaming, so in theory that PSU wouldn't even feel it.
  3. Akinos242 said:
    I'd be very wary about putting anything more in that system with that PSU, 12V@15A isn't even close to the claimed rated power output. If you're looking to buy a new PSU, check out Seasonic or the Rosewill Capstone/Fortress series.


    hmm i was thinking the same. :(

    how about this one?:

    http://www.flipkart.com/seasonic-ss-400-es-400-watts-psu/p/itmd5xz4grjhdbjz?pid=PSUD5XZ4DDYQCPJ6&ref=b60f4f5a-4931-4096-9de7-13cef059bca9

    it has 2 12V rail so idon't know how thats going to effect..

    or this one?

    http://www.flipkart.com/corsair-cmpsu-430cxv2uk-430-watts-psu/p/itmd5xz5qs9mhqmq?pid=PSUD5XZ4ZJ5YPGBU&ref=edc96502-4a23-42a7-937d-bd8115a36236

    both are fit for my budge..
  4. Forget the seasonic its garbage. Get a Corsair CX500 builder series, and it will never fail you.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139027&Tpk=corsair%20cx%20500

    And don't be afraid of the DOA reviews, its just bad luck I've had one of these in a system for 3 years now and it is a working horse of massive proportions.
  5. DamZe said:
    Forget the seasonic its garbage.

    :lol: :lol: :lol:
    Gotta love the noobs
  6. delluser1 said:
    :lol: :lol: :lol:
    Gotta love the noobs


    It looks like garbage, it doesn't even have sleeved cables. It may perform well, but the Corsair is still a better buy in my book, one solid 12V rail and 80 plus.
  7. Ok looks like I have no choice but to buy that Corsair 430W in any case if I want to add graphic card.

    I can get MSI 6770 for much cheaper rate than 7750. So should I buy 6770 or stick to 7750
    6770 is available at 6200 Rs while 7750 is at 7500 Rs.
    So is the difference worth it?


    and one more question...how am I going to fit that Corsair in my cabinet? That PSU fan is going to blow hot air right onto CPU fan.

    Do I have to buy a cabinet fan for that?
  8. DamZe said:
    It looks like garbage, it doesn't even have sleeved cables. It may perform well, but the Corsair is still a better buy in my book, one solid 12V rail and 80 plus.

    Do you know who makes Corsair's PSU's?
  9. jsatpal said:
    Ok looks like I have no choice but to buy that Corsair 430W in any case if I want to add graphic card.

    I can get MSI 6770 for much cheaper rate than 7750. So should I buy 6770 or stick to 7750
    6770 is available at 6200 Rs while 7750 is at 7500 Rs.
    So is the difference worth it?


    and one more question...how am I going to fit that Corsair in my cabinet? That PSU fan is going to blow hot air right onto CPU fan.

    Do I have to buy a cabinet fan for that?


    It won't blow hot air in, it is the intake fan, that blows hot air out the back of the PSU. I would go with the HD 7750, newer tech plus it can be overclocked from 800 to 880/900 mhz safely! And it uses less power, performance wise the HD 6770 is just a tiny bit faster, and you would never actually see the difference in real world gaming.
  10. Mousemonkey said:
    Do you know who makes Corsair's PSU's?


    Quite frankly I don't care. My mobo from ASUS was made in China, it is still a A+ class motherboard. So even if the Corsair CX models are made in China that doesn't make them inferior as long as the components are solid.
  11. What is your max budget for the PSU + GPU?
  12. According to this site,I think the 6770 is a better choice over the 7750 if power is not your concern-
    http://www.gpureview.com/show_cards.php?card1=658&card2=676
  13. DamZe said:
    Quite frankly I don't care. My mobo from ASUS was made in China, it is still a A+ class motherboard. So even if the Corsair CX models are made in China that doesn't make them inferior as long as the components are solid.


    Most of the high end Corsair units are made by Seasonic :).
  14. Sunius said:
    Most of the high end Corsair units are made by Seasonic :).

    Exactly. That "garbage" PSU is 80+ bronze rated as well, it's a fine PSU if you don't need huge amps. It's probably twice as powerful as that so-called 450W PSU from Zebronics.
  15. i am running gigabyte GV 7750 OC in 350W dell PSU.my friend also has that card and he is running it in 280W PSU.i am 101 percent sure,it will work on ur pc perfectly.i dont know what the hell are those guys telling u to buy newer psu.buy the gigabyte gv 7750 which is factory overclocked and give u boost in performance.buy the card in amazon,now amazon ships in india also and it will cost u rs.5794($104.4) with shipping charge rs.285(11-17 days),rs.700(8-11 days),rs.1344(2-5days)
  16. Ok guys I just ordered 7750 Sapphire version. :D thanks for your help ;)

    Now about PSU...

    I can spend 3000 Indian Rs. Max on PSU now

    So which one should I buy?

    I'm thinking about Corsair 430CX version
    any other options?
  17. DamZe said:
    Forget the seasonic its garbage. Get a Corsair CX500 builder series, and it will never fail you.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139027&Tpk=corsair%20cx%20500

    And don't be afraid of the DOA reviews, its just bad luck I've had one of these in a system for 3 years now and it is a working horse of massive proportions.
    what kind of noob non sense are you talking about Corsair is a well known supplier of PSU's with top notch ratings with good value. The models made by Seasonic tend to be very reliable the psu your recommending is barley acceptable as not crap get your facts straight! Corsair doesn't build any of it's PSU.
  18. What will happen if I try to run my 7750 on my current Zebronics PSU...?????????

    Is it going to burn and take my mobo with it..or is it just going to shut down because of overload..???
  19. jsatpal said:
    Ok guys I just ordered 7750 Sapphire version. :D thanks for your help ;)

    Now about PSU...

    I can spend 3000 Indian Rs. Max on PSU now

    So which one should I buy?

    I'm thinking about Corsair 430CX version
    any other options?

    I don't know the prices for other PSUs in your area, so I'll just go by the two you linked before; the CX 430 V2 is slightly weaker (fewer amps on 12V rail(s)) but IMO looks better. Pick whichever you prefer, they'll both work well with your system.
  20. jsatpal said:
    What will happen if I try to run my 7750 on my current Zebronics PSU...?????????

    Is it going to burn and take my mobo with it..or is it just going to shut down because of overload..???

    Hard to say. It might work, it might shut down, or it might break something. That's how it is with a PSU from an unreliable brand.
  21. bigcyco1 said:
    what kind of noob non sense are you talking about Corsair is a well known supplier of PSU's with top notch ratings with good value. The models made by Seasonic tend to be very reliable the psu your recommending is barley acceptable as not crap get your facts straight! Corsair doesn't build any of it's PSU.


    Well if SeaSonic built the CX500, then why is it barely acceptable since you hold SeaSonic in such high regard?
  22. DamZe said:
    Quite frankly I don't care.

    How can you be giving recommendation when you don't know anything? :pfff:
  23. DamZe said:
    Well if SeaSonic built the CX500, then why is it barely acceptable since you hold SeaSonic in such high regard?
    :lol: seasonic didn't build it stop giving bad advice to people learn what your talking about before giving bad advice dude
    CX-500 – Channel Well(CWT)
    CX-500 v2 – Channel Well(CWT)
  24. DamZe said:
    Well if SeaSonic built the CX500, then why is it barely acceptable since you hold SeaSonic in such high regard?

    For the CX500 as well as the CX430, Corsair switched from Seasonic to CWT, a manufacturer that isn't as highly regarded. They also rated those PSUs at 30 degrees C, which is a bit low and therefore their numbers are a bit optimistic.
  25. Mousemonkey said:
    How can you be giving recommendation when you don't know anything? :pfff:


    Not knowing if SeaSonic makes Corsair PSUs does hardly qualify me as someone who doesn't know anything!? I may have only built systems for 8 years, but just from looking at the SeaSonic recommended it looks like OEM material, now granted its 80 bronze, but I would rather go with one single powerful 12V rail than having two in a 400Watt PSU no matter the brand. As for recommending the Corsair, a system I built for my sister 3 years ago runs with the CX500 and it runs silent, efficient has no voltage fluctuation and is overall rock solid to this day that is why I recommended it.
  26. Sakkura said:
    For the CX500 as well as the CX430, Corsair switched from Seasonic to CWT, a manufacturer that isn't as highly regarded. They also rated those PSUs at 30 degrees C, which is a bit low and therefore their numbers are a bit optimistic.


    From personal experience I can vouch for the CX500, for 3 years it has worked flawlessly in my sister's machine, it is not suited for hardcore rigs, but looking at OP's rig then the CX get's a recommendation from me.
  27. Ok I'm buying Corsair 430CX...:)

    One final question from me:

    When I install my graphic card do I have to disable onboard graphic card from BIOS or BIOS will automatically detect 7750 and disable onboard graphic card?
  28. DamZe said:
    Forget the seasonic its garbage. Get a Corsair CX500 builder series, and it will never fail you.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139027&Tpk=corsair%20cx%20500

    And don't be afraid of the DOA reviews, its just bad luck I've had one of these in a system for 3 years now and it is a working horse of massive proportions.


    Well Corsair PSU is good( most of them are mid and high end) but they don't make PSU. Seasonic , they do make PSU from entry level psu to high end( some of them might look ugly).

    Top PSU maker: Seasonic, Enermax

    PS: Corsair is only Designer( they don't make PSU). If you say Seasonic is garbage , Corsair PSU is also garbage because Seasonic make PSU for Corsair.
    http://www.tomshardware.com/reviews/power-supply-oem-manufacturer,2913-5.html
  29. jsatpal said:
    Ok I'm buying Corsair 430CX...:)

    One final question from me:

    When I install my graphic card do I have to disable onboard graphic card from BIOS or BIOS will automatically detect 7750 and disable onboard graphic card?


    Your chipset doesn't let you disable onboard, and it will automatically detect the hd 7750. Just plug in HD 7750 in the computer, plug the monitor to the new HD 7750 and turn it on. And you're done :).
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