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Power supply good enough?

I have an Extreme RSY-645 450W PSU and might be getting a Gigabyte HD 6850 (http://www.newegg.com/Product/Product.aspx?Item=N82E16814125353) and I would like to know if 450 watts is going to cut it?
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More about power supply good enough
  1. That is a week PSU. Change the PSU too , don't risk to burn something in your PC. A 500W - 550W from a good brand like Corsair,Seasonic,Antec,XFX,OCZ,Enermax.
  2. no thats not a good psu get an corsair cx 430e psu that would be good enough to power hd 6850.(or get more better psu)
  3. It has 25A on the +12V rail so if I were you I'd go with a 7770 even if it's more expensive as it only draws ~80W. If the PSU doesn't have a 6pin pci-e power connector, get a 7750 (doesn't need external power) or get a new PSU and a 6870.
  4. Will a 7750 suffice (or any 7000 series)?
    If i'm spending money on a video card like that i really want to avoid spending more money on a power supply...
  5. What are your resolutions? it depends because if you have a 17" 1280x1024 monitor for gaming you will not need more than 6790 or 7770 for gaming at ultra many games with pretty good FPS. But if have a bigger monitor like 1600x900 or a 1920x1080 you will need a 6850 or better to play at high graphic level.

    For that PSU I would recomend you a 7770, but for most 67xx or any 68xx series you should change that PSU...

    I ran my HIS 6790 with a 350W Thermaltake PSU, but I just turned it on and testing it cuz it was new, then I put it into my new machine with the new PSU, which is only 450w and sadly a coolermaster but at least its certified and does have a 38A single rail which is enough for runing my system...
  6. I'm going for a triple monitor setup with eyefinity, each 19 inch at 1280x1024
    motherboard is unfortunately not crossfire capable so i need the best single video card for roughly $100-150
  7. I hadnt seen your sig. 7750 won't be much of an upgrade from 6670, 7770 is better but I would really get these if I were you, the improvement would be great :

    6870 http://www.newegg.com/Product/Product.aspx?Item=N82E16814102948

    CX500 http://www.newegg.com/Product/Product.aspx?Item=N82E16817139027
  8. The 6670 i currently have is slightly defective and is being returned so i'm looking for another card to run my setup (don't want to take the chance with the same card)
    Is there any cheaper power supply? 0.0
    And how's the XFX Double-D? (i just love the name) http://www.newegg.com/Product/Product.aspx?Item=N82E16814150521

    BTW here's my PSU-
  9. The XFX 6870 its a little monster in the good meaning of it, its pretty good GPU and aweosme for the eyefinity that you are planing to do, its plenty of power.

    But you cant go cheap with the PSU, its the most important part of your system, its like the tires of you car. You buy cheap tires, for your ferrari you are not going to have a good day.

    Cutting down your GPU and spending it on your PSU will not only give stabilty, but also lower energy bills, low eat, better headrom for upgrades and if not enough everything i said, it will last for years, more than any other parts because you will be using it across at least 2 system you build or more...

    Also Im sorry to say, but athons are not great, if you plan to get a mid-high GPU like 6870, it will be bottlenecked by your processor, even my 6790 is getting bottlenecked my Athlonx x2 260 overclocked to 3.7ghz...

    Im sorry if I sound harsh, im just trying to help as others members of the comunity..
  10. horaciopz said:
    The XFX 6870 its a little monster in the good meaning of it, its pretty good GPU and aweosme for the eyefinity that you are planing to do, its plenty of power.

    But you cant go cheap with the PSU, its the most important part of your system, its like the tires of you car. You buy cheap tires, for your ferrari you are not going to have a good day.

    Cutting down your GPU and spending it on your PSU will not only give stabilty, but also lower energy bills, low eat, better headrom for upgrades and if not enough everything i said, it will last for years, more than any other parts because you will be using it across at least 2 system you build or more...

    Also Im sorry to say, but athons are not great, if you plan to get a mid-high GPU like 6870, it will be bottlenecked by your processor, even my 6790 is getting bottlenecked my Athlonx x2 260 overclocked to 3.7ghz...

    Im sorry if I sound harsh, im just trying to help as others members of the comunity..

    Nah you ain't harsh you're very helpful.

    Also, I just found a PSU in my closet. 528w with 32 amp off the 12v, will that work?
  11. If its "new" one will work, but if it has been used for too long I would be worried.. PSUs dregades their eficienty and power overtime, thats why its recomended an PSU with much more Wattage than its used by the system....

    Even if its not new, and has been used for short time it will be good for a 6850, since the rest for your PC dont use much energy, the GPU will be the only "heavy" load for it...

    I LoL'ed a little when you said that, it was like

    http://farm6.staticflickr.com/5148/5684564532_15affdd273.jpg

    Im saying you need a PSU for a bigger card and you looking for go cheaper, so why dont you use a smaller GPU and a new PSU? can you go a little long in your budget?

    Also that PSU in your closet its for any "brand" ? or certified? it will give you confidence...
  12. Tested the Closet PSU, no good, i guess that's why it's in the closet x)
    I can go to about like $180 max if i really need a good PSU. which gives me about 120-130 for a GPU.
    keep in mind i NEED to be able to run eyefinity (or i'll die of regular-ness) to play GTA IV, etc =D
    so, recommendations?
    How about your CX500 http://www.newegg.com/Product/Product.aspx?Item=N82E16817139027 and this 6850 http://www.newegg.com/Product/Product.aspx?Item=N82E16814161384
  13. Best answer
    Since you're real tight on budget I would go with :

    6850 : http://www.newegg.com/Product/Product.aspx?Item=N82E16814131374
    CX430 (Plenty for 6850 since it's from Corsair) : http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026&Tpk=cx430

    Total : 187$ including shipping and performance is way better than 6670, even slightly better than 7770. :)


    EDIT : You're probably gonna say why go from your current 450W PSU to a 430W unit? It's all about the manufacturer, I would never trust no name PSU's they just might blow up your entire PC.
  14. Thank you much for your help, i'll update whenever i get this 6670 refunded and the new stuff shipped to me.
  15. Wanna go cheaper?

    This one will have to job done http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026

    but it wont las longer than a 600W one, the GPU is ok with this one. It is certified, a good brand and for 45bucks (and mail in rabate makes it cheaper) you should get it...

    some time ago before i upgrade my stuff a guy recomended me a 380W antec PSU, cheap and certified, but i went higher and got a 450W for my HD6790. For the HD6850 that one will work fine...

    Also the HD6850 its a pretty long card, make room for it! happy gaming lol !

    Lol diec4st said almost the same, as you can see thats the way you should go!
  16. horaciopz said:
    Wanna go cheaper?

    This one will have to job done http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026

    but it wont las longer than a 600W one, the GPU is ok with this one. It is certified, a good brand and for 45bucks (and mail in rabate makes it cheaper) you should get it...

    some time ago before i upgrade my stuff a guy recomended me a 380W antec PSU, cheap and certified, but i went higher and got a 450W for my HD6790. For the HD6850 that one will work fine...

    Also the HD6850 its a pretty long card, make room for it! happy gaming lol !

    Lol diec4st said almost the same, as you can see thats the way you should go!


    heh thanks, but you're late by a few minutes on that PSU ;]
  17. Best answer selected by phait103.
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