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Suggestions on better gaming GPU for 450w PSU rig

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  • Graphics Cards
  • Graphics
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Last response: in Graphics & Displays
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November 3, 2012 6:35:14 PM

Hi guys,

I'm planning on getting a new graphics card, i have a GT 440,the DRR3 ver. (just 128-bit so aiming to get another with 256-bits)
So, as you can see it's not really good for modern games nowadays. :( 

I have a TreeTop TA-80 450w PSU

I'm planning to get a GTX 550 ti or a HD6850, not really sure whether they could run on my rig with just a 450w PSU.
I'm on a budget so i'd rather not change the PSU. :p 

Here's my spec:

AMD FX-4100, OC'ed to 4.0GHz
2x4GB 1600MHz RAM
Asus M5A78L-MLX
Seagate ST500DM002-1BD142 500GB

currently playing GTAIV, GuildWars2, Battlefield:BC2, on med and Skyrim, CODMW3 on med-high (1600x900 res) (30-40fps)
Planning to tryout Battlefield 3 or MaxPayne 3 but i doubt my PC can handle well.

any suggestions on a good mid-range GPU or cheap high-end GPU? :lol: 

More about : suggestions gaming gpu 450w psu rig

a b U Graphics card
November 3, 2012 6:52:13 PM

What is your max amount? I would get a 7770 or 7850 if you can afford the latter.
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a b U Graphics card
November 3, 2012 7:01:18 PM

For the most part, lt_dan's pretty much right. If you can afford it, get the 7850.

But I can honestly not find anything on that PSU - is there any way you can get a photo of the label on it (where it lists the amperages and voltages and such) so I can get a better picture of what it's capable of? I kind of get the feeling it's not really a 450W.
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a c 302 U Graphics card
November 3, 2012 7:26:31 PM

A 450w psu will usually include one 6 pin pci-e power connector, and be able to deliver 30-34a on the +12v rails.

If it does not have suuch a connector, then I suspect that it is a cheaply made psu that should be replaced.
I would not try to use a molex to 6 pin adapter.
Here is a handy list of graphics cards and what power needs they have.
Look for a graphics card that will be satisfied with just one 6 pin connector and 450W:
That might be a card as strong as a 7850 or a GTX660ti:
http://www.realhardtechx.com/index_archivos/Page362.htm
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a c 578 U Graphics card
November 3, 2012 8:23:56 PM

The Treetop Corp. TA80 450W PSU is only a 390 Watt continuous rated PSU.

The OEM seems to be Acbel Polytech. Acbel Polytech has a couple of 390 Watt PSUs that have a maximum combined +12V current rating of 29 Amps and they only have one (6+2)-pin PCI Express power connector.

I agree with @geofelt's card recommendations.

Just be careful if you're thinking of getting a Radeon HD 7850 because some of them require two 6-pin PCI Express power connectors.
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a b U Graphics card
November 3, 2012 10:43:20 PM

a 7770 would still be fine with 390w continous, maybe even a 7850, but I would check before getting that.
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a c 184 U Graphics card
November 3, 2012 11:30:01 PM

lt_dan_zsu said:
a 7770 would still be fine with 390w continous, maybe even a 7850, but I would check before getting that.


I totally agree.
I'm not sure on that PSU so I'm not comfortable recommending much more than an HD7770 though:

This one is $105 after rebate and you get FAR CRY 3!
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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a b U Graphics card
November 4, 2012 3:12:08 AM

Yeah I am not sure of that psu. I have never heard of that brand, but you could probably also get a good 400w psu for like $30.
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November 4, 2012 4:31:32 AM

Here's the pic of the side label, showing the amperage and voltages - https://docs.google.com/open?id=0ByWecAc2lHOQdHpEM2NuTj...

Honestly, i don't half understand what the table and figures means so i beg for some guidance.
But i do have one 6-pin PCI-e power connector inside, so is it enough to power the HD7850?

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November 4, 2012 12:28:58 PM

I think i'll get the HD6850 or HD7850 since they're both sub $200 priced, but the problem it will they work with my PSU?
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a c 302 U Graphics card
November 4, 2012 1:07:08 PM

darkevin said:
Here's the pic of the side label, showing the amperage and voltages - https://docs.google.com/open?id=0ByWecAc2lHOQdHpEM2NuTj...

Honestly, i don't half understand what the table and figures means so i beg for some guidance.
But i do have one 6-pin PCI-e power connector inside, so is it enough to power the HD7850?


You should be OK.
Your psu is capable of 30a. (take the combined 12v watts and divide by 12v,)
You should be ok with a normal 7850, assuming that it is not one of those heavily overclocked versions that need two 6 pin connectors.
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November 7, 2012 1:11:47 PM

Thanks guys, it's the HD7850 then, thanks for the help, gonna get it by this week.
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November 7, 2012 1:12:45 PM

Best answer selected by darkevin.
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