Best way to upgrade this pc?

[romeodakins]

I have a system with
CPU: A8-3870k
Mobo: ASUS F1A55-M LE
GPU: 6670(Dual Graphics with CPU)
HDD: 750GB Seagate
Case: M59 NZXT
Cooler: Hyper 212
PSU: 400w Antec
RAM: 8GB Kingston Hyper X

I thought I wasn't ever going to upgrade my pc before so I went with the Llano build but now I got no upgrade path What's the best way to upgrade this pc without changing the CPU, and possibly keep the same PSU. It's too much hassle to remove the Mobo and CPU and PSU, that's pretty much just building a new pc. I realize that I can just get a new GPU but I want the most efficient way and also so that the CPU doesn't bottleneck the GPU and also works with my 400W Antec.

Here's my PSU, it's pretty good, got it for a sale of 30 bucks
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371029

 

[romeodakins]

Also what is the best GPU that can run on a 400w psu?

 

[Deemo13]

The CPU shouldn't bottleneck that many cards too hard. You could potentially upgrade to a 7770 with no problems.

 

[romeodakins]

The CPU shouldn't bottleneck that many cards too hard. You could potentially upgrade to a 7770 with no problems.

On a 400w psu?

So if I get a 7770 with the A8, how would it compare with getting a 965 BE with 7770. Would there be a whole big difference or just a tinsy difference?

 

[Deemo13]

If its a good 400W, you should be alright. Seeing as its an Antec, you should be alright.

 

[romeodakins]

If its a good 400W, you should be alright. Seeing as its an Antec, you should be alright.

7770 isn't that much better than the 6770, my 6670 dual graphics with my cpu makes it close to a 6770.

http://www.hwcompare.com/11926/radeon-hd-6770-vs-radeon-hd-7770/

They're basically the same. Is there anything better I can get instead of a 7770?

 

[Deemo13]

Well, you might have to upgrade your power supply to run something like a 7850.

 

[manofchalk]

7770 isn't that much better than the 6770, my 6670 dual graphics with my cpu makes it close to a 6770.

http://www.hwcompare.com/11926/radeon-hd-6770-vs-radeon-hd-7770/

They're basically the same. Is there anything better I can get instead of a 7770?

HWCompare isnt the best indicator of performance, all their results are theoretical rather than actual.
This is more akin to what you will actually see.
http://www.anandtech.com/bench/Product/613?vs=536
Though I don't know how much a factor the fact it can Crossfire with the iGPU is. But at the very least you wont lose performance.

 

[romeodakins]

Well, you might have to upgrade your power supply to run something like a 7850.

What would be the best psu to upgrade to? How much watts would I need?

 

[Deemo13]

Corsair, Antec, and Seasonic are all really good brands. Anything like 500W would be good from those manufacturers.

 

[romeodakins]

Corsair, Antec, and Seasonic are all really good brands. Anything like 500W would be good from those manufacturers.

Should I get 600W just to be safe if I want to upgrade again later? And at what gpu would my cpu start bottlenecking my gpu a lot? Also if I get a 7770 with the A8, how would it compare with getting a 965 BE with 7770. Would there be a whole big difference or just a tinsy difference? I want to know this because I want to see if I'm losing a lot of performance and paying the same when I could've went the phenom build.

 

[Deemo13]

The A8 really isnt that bad. It will run with a 7770 just fine.

 

[romeodakins]

The A8 really isnt that bad. It will run with a 7770 just fine.

I'm interested in something better like a 7850, how would it do with the A8 and a 400w psu?

 

[Deemo13]

Well, 400W is pushing it, but it should do just alright with the A8. Not stellar, just alright.