Fitting GPU for my system

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Katon123

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Hey there guys. I have a PC with an Asus P5QPL-AM Mobo, Core 2 Quad Q8300 CPU, 4GB of RAM and a Corsair 600W 80 Plus Bronze PSU. Can you suggest me a GPU that will not bottleneck my CPU? Was thinking of a XFX HD 7850 Core Edition or a GTX650Ti, but since I don't know about such stuff, I'm not sure. Any suggestions?
 
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EzioAs

EzioAs

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Actually, even an HD7770 would be bottlenecked by that CPU. I used a Q8300 (overclocked to 3.1GHz) in my main rig before and it totally bottlenecks the GTX460 (close to an HD7770) in most games, especially those that are not multi-threaded well (now I'm using an i5-3570K). However, it's not so bad that I didn't get non-playable frame rates in games, it's just not as good as the newer CPUs.

If you have any plans for a CPU upgrade in the not too long future, then I suggest get the HD7850. If not, then maybe the GTX650ti is as good a card as you should get.
 
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Feldmarschall

Feldmarschall

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Both of these will work just fine with your board and CPU. 7850 radeon is a little bit faster so I would go with that option. Either way, CPU is good and works great for oldie, and you can choose any GPU that fits your PSU specs.

All of these are PCIe 3.0 while you have 1.1 architecture supported but that should not bother you cause it's compatible.
 
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Katon123

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You know Feldmarschall, I have a very old GPU right now (7600GT), and I'm short on money, so I have to be sure about the GPU I'll get. I asked this question many times, searched on other forums, I always get mixed answers. Some agree, some not. Are you sure the HD 7850 will do fine? I don't mind if there is a slight bottleneck, but if it's too much, the GPU's paid price will basically go to waste, because I won't be able to take full advantage or at least a sutifying advantage of this GPU.

 
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spentshells

spentshells

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Without an overclock the 7850 would be a waste. If you are low on funds look for used 5770/6770 .
 
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Katon123

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So, the 6770 is the best GPU I can get for my system?
 
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Feldmarschall

Feldmarschall

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You will always get mixed answers. That's for sure. Mostly because "bottleneck" is a wide term and cannot be tested for sure. Only comparable thing for this CPU is if you clock it to 3,3 (on 3,0 will run with stock cooler) and run passmark you'll get same results as new i3-3220 which is base for lot a PC's these days and lot of people have put 7850 or simillar GPU's with that CPU. The main difference between those i3 CPU's and your's is that your one is quad core and i3's just act as quad cores sometimes due to HT tech.

Right question is will you get same results as in brand new computer with this video card: Answer is no (due to RAM, PCI-e older etc.)
Next question is will you get same results if you buy 7850 or something weaker: Answer is no (7850 will perform better with your system)

I have used friends 480GTX (old monster) with mine Q6600 @3.0GHz 8GB ram @800 MHz and played even Crysis with 1920*1080 without AA. FPS (25-30)

He has 1600MHz DDR3, and i5 2500K (his CPU vs mine is like 2 times on passmark). Same results (he has like 2 fps more).

So bottleneck is very, very relative.

Just to clarify, it would be better to wait and buy all together (that's what i always do), but 7850 will perform in your system and that's certain.

In unoptimized games like Assassins creed 3 you'll get weaker results, but that's because this game has bug and uses only 1 core @100% in Boston and other cores are like 20% used. GPU stays at 40% usage, and guess what i was told when asked about that game? Bottleneck for sure, CPU too weak. Then guy came with i7 and 7970 radeon and got same usage, and 5 fps more than me, and lot of people came back with same problems. I've had HD4850 by the way in PC that time.

That's my opinion.
 
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Katon123

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I see. The thing is, I just bought the Core 2 Quad Q8300. I wanted a better CPU, cause I had a Dual Core. I didn't plan to change my Mobo, and Core 2 Quad CPUs are the best ones it can get. And recently, I found out about the "bottleneck". A week ago, I thought you could use any CPU with any GPU and get great gaming results, as long as the GPU is good. I was wrong. Now, the only thing left for me to buy is a GPU (got CPU,PSU,RAM). I don't know how to overclock, so yeah. Could you perhaps tell me what's the best GPU option for my CPU? Or should I get the 7850 anyway?

 
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Feldmarschall

Feldmarschall

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Well if you are low on funds dont go that high. I would not for sure. I would go for something older (cheaper). Anything would make great improvement over ehat you have now. Take a look at benxhmarks of 6770, 5770, gtx460 or something. Can't really help you becquse i don't know what you want to achieve. Those benchmarks will give you idea how they perform with new games and according to that you may choose.
 
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Katon123

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Putting aside the funds, as a final answer, what would you suggest? Will I notice any differences with a HD 7850, compared to a HD 6770 (always based on my CPU)?
 
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