HD 7770 Minimum Power Supply

What is the minimum PSU requirement for and HD 7770. AMD says that a 500w minimum is needed. I think 500w might be overkill...
64 answers Last reply
More about 7770 minimum power supply
  1. the 7770 is a 100w card, so not much power is needed, I have a small AMD X2 550 BE thats over clocked with a 7770 in it, max power usage is 213watts, so it depends on your system config
    but you could easily use a good quality 430watt PSU and have plenty of power to spare
  2. I have a 450w PSU.
    I'm upgrading my PC to this:
    Core i3 2100
    4GB RAM
    HD 7770
    I don't want to buy a new PSU :D
  3. The quality of your 450W PSU is the crucial part but 7770s requires such low power. So, as long as you have a 6-pin power connector it will run just fine.

    I have a 300W bronze PSU and I'm using a GTX 660. Running great!
  4. My PSU doesn't have a 6-pin PCIE power connector.. It's old too. I've been using it since 2009 with an Nvdia 9600GT.
  5. I will get one with card :D
    Oh and which card is better: HD 7770 vs HD 6870
  6. It's never suggested to use a MOLEX adapter. That's just bad juju. You should upgrade your PSU to something modern.
  7. Yeah I know but I'm already really tight on my budget... :(
  8. What is your PSU?
  9. I have a 430W PSU with a 95W cpu and 7770, working good even overclocked.
  10. The thing with PSU's is that they are quality over quantity. A quality built 400W is better than a no name 600W. It's your rig, it's your parts and money, it's your choice.
  11. Its a no name PSU written 'For Pentium IV' on it. I can post a picture if you want :/
  12. Lets get some 12 volt amperage ratings on the current power supply to see just what it can do.

    The Core i3 2100 is a very low power consuming cpu.

    I have used the Molex adapters in the past with no issues. As long as you have the 12 volt current to run it.

    Point in case, I7 750(under volted :) ) + 5770 is more then within the 12 volt power of my 300 watt power supply(22 Amps @ 12 volts). And the 7770 takes LESS power. It just needs to have the 6 pin connector. In honestly, with some slight tweaks(lower voltage and a good chip) it would not even need one.

    EDIT. Just saw the "no name" thing and am worried a bit.

    Picture for sure.
  13. How can i know if my PSU has 12 volt current?

    http://imgur.com/YbXqe
    My PSU is the 'ATX-450' one :D
  14. the unit has 16amps on the +12v rail. which is up to 192w
  15. dudewitbow said:
    the unit has 16amps on the +12v rail. which is up to 192w


    Which is really low compared to todays standards. You should have at least 30A for modern equipment. The more Amperage the better (along with a quality name).
  16. This can lead to a worry about not having the needed power.

    The math was just AMP X VOLT = WATT
    or
    16 X 12 = 192

    You could be cutting it close. I mean, it "should" work, but even I am unsure of cutting it that close(And I run a 5770 on a 300 watt unit :) . When it worries ME, it should worry you.).

    65 watt cpu(chances are it stays under that) + 80-90 watt video card.. This does not leave lots of room for the rest of the system. All components idle MUCH lower.

    The risk is more up to you at this point, but a cheap(not not BAD) 450 watt power supply should be HIGHLY considered.

    Sorry about the newegg.CA. it asked me once and now it always goes to .CA so please check .com if you are in the US Fixed

    Antec Value psu with 360 watts @ 12 volts.
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371045

    XFX. A bit more money and power 408 watts @ 12 volts.
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817207018

    Rosewill has become much better with some of the new power supplies. 444 watts @ 12 volts. VERY good value(Still recommended to use a surge bar since it has nothing built in.)
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817182261
  17. I use the above mentioned Antec VP-450 for my rig. I don't even come close to stressing it out. In a breakdown by Hardware Secrets you can see that while it doesn't have the 80+ rating, it does, in fact, have 80.3% efficiency at 100% load.
  18. For the love of god, do not, I repeat NOT get an i3 2100 for gaming, I have it right now and its using a 7950 in BF3, on ANY settings, I get max 25fps, normal 19ish. Please do not get it, my god it sucks for gaming. I`m about to upgrade to an i7 3770k
  19. StrangeInstance said:
    For the love of god, do not, I repeat NOT get an i3 2100 for gaming, I have it right now and its using a 7950 in BF3, on ANY settings, I get max 25fps, normal 19ish. Please do not get it, my god it sucks for gaming. I`m about to upgrade to an i7 3770k


    Why in the world would you get an i7 for gaming? A total waste of money. The i5 is cheaper and does everything the i7 can do in games.
  20. I never said the i7 was for gaming, and it is, but its also for some other fun stuff
  21. Well, *** then...
    I really can't stretch my budget anymore :'(
    and PSUs are so freaking expensive(good ones).
    I might sell my old PC parts to get one PSU.
    I think I will get this:
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371049
    It will be enough if I wanted to Crossfire or Upgrade my CPU ;)
  22. http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026&Tpk=cx430
    I run this with a 7770 and an i5-3470. Runs like a charm. I got the $20 rebate back no problems after 4 weeks or so. $25 after rebate is a steal.
  23. for a $45 price, a $25 is indeed a steal :P
    Will look into the PSU.. I will be future proofing for SLI..
  24. themegadinesen said:
    I have a 450w PSU.
    I'm upgrading my PC to this:
    Core i3 2100
    4GB RAM
    HD 7770
    I don't want to buy a new PSU :D

    trust us you would be just fine with that psu. only the amperage worries us a bit.

    boyabunda said:


    I have a 300W bronze PSU and I'm using a GTX 660. Running great!

    thats cutting it too close

    StrangeInstance said:
    For the love of god, do not, I repeat NOT get an i3 2100 for gaming, I have it right now and its using a 7950 in BF3, on ANY settings, I get max 25fps, normal 19ish. Please do not get it, my god it sucks for gaming. I`m about to upgrade to an i7 3770k


    i plain refuse to believe that
  25. Quote:
    trust us you would be just fine with that psu. only the amperage worries us a bit.


    I trust you :P. It's just that I don't want it to go faulty on the first day of usage :D...

    Quote:
    For the love of god, do not, I repeat NOT get an i3 2100 for gaming, I have it right now and its using a 7950 in BF3, on ANY settings, I get max 25fps, normal 19ish. Please do not get it, my god it sucks for gaming. I`m about to upgrade to an i7 3770k


    I saw people gaming with an i3 just fine...
    Maybe it's your PSU or you're trying to play on a 64 player map :/
  26. I have a 7950 3GB, 16GB DDR 1600 RAM, 600W PSU, and the mobo is fine, this plain stinks, I am serous :P I`m upgrading to an i7 3770k tomorrow.
  27. ok go waste your money!!
  28. Read my sig. i3-2100, 8gb, blah blah blah. I play Skyrim (my main game until BO2 comes out) on a 24" LED monitor at 1920x1080 on Ultra and I consistently stay at 50-55fps. Skyrim uses multiple cores just like BF3. I know I couldn't run BF3 on Ultra and recieve those same frames but medium, maybe high with 30+ fps.
  29. dscudella said:
    Read my sig. i3-2100, 8gb, blah blah blah. I play Skyrim (my main game until BO2 comes out) on a 24" LED monitor at 1920x1080 on Ultra and I consistently stay at 50-55fps. Skyrim uses multiple cores just like BF3. I know I couldn't run BF3 on Ultra and recieve those same frames but medium, maybe high with 30+ fps.


    am not saying you shouldnt upgrade to a better cpu but not to a 3770k. 3570k is plenty for any game now and in future also
  30. I'm not upgrading, well, not until Haswell & the new Radeons drop. I was replying to StrangeInstance
  31. The i3 should be fine for me, right?
    I mean gaming at 1440x900 with an HD 7770 will be 30+ FPS?
    Games like Skyrim, BF3 and others at near max settings should be fine, at least I think :/
  32. themegadinesen said:
    The i3 should be fine for me, right?
    I mean gaming at 1440x900 with an HD 7770 will be 30+ FPS?
    Games like Skyrim, BF3 and others at near max settings should be fine, at least I think :/


    Let's get honest here. What is your budget for your upgrade? What components do you have now?

    Edit: I went with the i3-2100 because I was on a tight budget and needed a computer at that second with a $500 budget (5 year old gaming laptop died). If I would have known that Piledriver was going to be on AM3+ I would have purchased a 965BE, Hyper 212 and OC'ed it myself, saved the cash from the CPU and purchased a better Motherboard & Video Card.

    That was my situation, doesn't have to be yours.
  33. themegadinesen said:
    The i3 should be fine for me, right?
    I mean gaming at 1440x900 with an HD 7770 will be 30+ FPS?
    Games like Skyrim, BF3 and others at near max settings should be fine, at least I think :/

    those games that you mentioned will be playable at near 60 fps with an i3 + 7770 with near max settings (but not quite at max) at 1440*900
    for example i get anywhere between 40-50 fps in skyrim at 1440*900 on ultra quality with multiple mods installed and thats with a G630 and 7750.
    you should easily be able to get 60 fpps in most games at max settings with i3 + 7770 :)
  34. Quote:
    Let's get honest here. What is your budget for your upgrade? What components do you have now?


    Edit: I went with the i3-2100 because I was on a tight budget and needed a computer at that second with a $500 budget (5 year old gaming laptop died). If I would have known that Piledriver was going to be on AM3+ I would have purchased a 965BE, Hyper 212 and OC'ed it myself, saved the cash from the CPU and purchased a better Motherboard & Video Card.


    That was my situation, doesn't have to be yours.



    Well THAT is my situation too :P
    I only have $300 for the:
    CPU, GPU, MOBO and RAM.

    Quote:
    those games that you mentioned will be playable at near 60 fps with an i3 + 7770 with near max settings (but not quite at max) at 1440*900
    for example i get anywhere between 40-50 fps in skyrim at 1440*900 on ultra quality with multiple mods installed and thats with a G630 and 7750.
    you should easily be able to get 60 fpps in most games at max settings with i3 + 7770 :)


    Wow, I always wanted to know what it is like to play at 60FPS 0_0.
    Oh and I finished Skyrim on My crappy PC(sig) played it at 15fps xP
    I will be modding too btw :P
  35. Well if I knew you were playing at lower settings and resolution, an i3 might be OK for 30+ fps, but I need my i7 because I do some things that are just plain cruel to my CPU
  36. Quote:
    Well if I knew you were playing at lower settings and resolution, an i3 might be OK for 30+ fps, but I need my i7 because I do some things that are just plain cruel to my CPU


    Well, umm, I'm planing on gaming at 1440x900 at mostly high settings not low.. :D
    And also, I think i reconsidered my parts. I may swap the CPU with a Phenom II X4 965 BE or an FX-4300 and the GPU with an HD 6870 Hawk ED.
    Now I want to know if my PSU will be able to handle it. I'm pretty sure it won't but I need your answer :D
  37. The 965 takes MORE power then the I3 so no, not with the current power supply.

    The 6870 takes WAY more then the 7770.

    Those together give a 100% chance of power supply failure.

    The older power supplies had more power on the 3.3 and 5 volt rails, but when systems started using 12 for everything(CPU/Video/Ect), those kinds of power supplies are just not suitable anymore.
  38. Expected this... I will try to look into a PSU to buy...
    My Upgrade will be:
    Phenom II X4 965 BE
    4GB RAM 1333mhz or more
    HD 7770
    a nice MOBO
    any suggestions on the minimum wattage these components would require?
  39. themegadinesen said:
    Expected this... I will try to look into a PSU to buy...
    My Upgrade will be:
    Phenom II X4 965 BE
    4GB RAM 1333mhz or more
    HD 7770
    a nice MOBO
    any suggestions on the minimum wattage these components would require?


    No more than 450W. If you want to go over to give some headroom for future upgrades you can but don't go crazy.
  40. And make that a quality 450 watt unit :)

    I did a 955BE system with a 550watt(OCZ Z-series. Got it for the Silver rating) and had plenty to spare.
  41. nukemaster said:
    And make that a quality 450 watt unit :)



    Exactly, quality > quantity.
  42. http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026&Tpk=cx430
    The best 25$ after rebate PSU. FTW BABY! Getting it x).
    And themegadinesen. In your FACE I finished Skyrim on 17 FPS AHHAHAHAH more than you YAAY! :)
  43. And also if you don't wanna get a new PSU you can always get a 7750? :)
  44. Quote:
    No more than 450W. If you want to go over to give some headroom for future upgrades you can but don't go crazy.


    Quote:
    And make that a quality 450 watt unit :)

    I did a 955BE system with a 550watt(OCZ Z-series. Got it for the Silver rating) and had plenty to spare.



    I will be getting this one for sure: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026&Tpk=cx430&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&AID=10446076&PID=4176827&SID=rhqv32wwu4jh


    Quote:
    And also if you don't wanna get a new PSU you can always get a 7750? :)


    Nah I won't step down now.. I already went a tier down by choosing the HD 7770 instead of the HD 6870 :)

    AND 2 FPS DOESN'T MAKE A DIFFERENCE HAHA!
  45. themegadinesen said:

    Should be perfect. Even some overclocking will be good to go.
  46. Glad to here it :)
    Oh and How much will I be able to overclock the Phenom? Can I overclock higher than Bulldozers/Vishera?
    If no then which one is better to get? :D
  47. themegadinesen said:
    Glad to here it :)
    Oh and How much will I be able to overclock the Phenom? Can I overclock higher than Bulldozers/Vishera?
    If no then which one is better to get? :D


    If you've got the $230 for a Piledriver, the FX-8350 is king. But it's the top of the line CPU by AMD. I've seen 965 BE's paired with the Hyper 212 hit 4.0ghz which is really good. It all depends on your temps. The faster you can bring in cooler outside air and exhaust the hotter air from the case the lower your ambient temps will be making the HSF's job easier.

    Edit: Here is a really good tutorial for overclocking the Phenom II from Overclockers.com and you can also head over to Overclockers.net where they pretty much specialize in the topic.
Ask a new question

Read More

Graphics Cards Power Supplies AMD HD Graphics Product