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Gigabyte HD 7850 2GB or HD 7790..Which one should I buy

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  • Motherboards
  • Processors
  • Gigabyte
  • HD
  • Graphics
Last response: in Graphics & Displays
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June 10, 2013 11:29:49 AM

I have a Q9400 Quad core 2.66Ghz processor with Intel DG43NB motherboard and 4GB of DDR2 RAM. I want to upgrade my GPU from XFX 9600GT to either a Gigabyte HD 7850 2GB Overclocked version or HD 7790... I want to know which one is a good buy given my current pc specs. I have heard about older CPU's being a bottleneck; hence I don't want to waste my money if the extra bucks on the HD 7850 don't add up to some thing. Please advise.

More about : gigabyte 7850 2gb 7790 buy

a b V Motherboard
June 10, 2013 11:39:53 AM

The Q9400 will be a bottleneck in situations where a game is CPU dependent. Large MMO scale games for example are often pretty CPU intensive. However most games are GPU dependent and the Q9400 will likely be a okay/good match with either GPUs.

I would rather pick the 7850 as it is ofc faster than the 7790, just given by the name - If you got the money ofc. :) 
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a b V Motherboard
June 10, 2013 11:43:41 AM

had the same dilema a few weeks ago. the 7850 its a 2GB /256bit video card and it has a decent OC from the factory. just saying: WoW ultra/1080p/ max vram 1,48 GB (taken from MSI afterburner monitor). SCII ultra/1080p/ max vram 1,23 GB. So, even older games are capable of using more vram @ 1080p... 1GB its to low imo nowdays...

Edit. OC your CPU to 3 GHz, should be easy 9but monitor your temps:p )
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June 10, 2013 12:53:45 PM

lostgamer_03 said:
The Q9400 will be a bottleneck in situations where a game is CPU dependent. Large MMO scale games for example are often pretty CPU intensive. However most games are GPU dependent and the Q9400 will likely be a okay/good match with either GPUs.

I would rather pick the 7850 as it is ofc faster than the 7790, just given by the name - If you got the money ofc. :) 


I wanted to upgrade to play crysis 3 and similar games...i think it wil utilise considerable cpu usuage...though it might seem odd but im not the multiplayer type..i have a 1440 *900 res lcd which i dont plan on upgrading so i think i can play crysis 3 even on high settings..do u think my cpu would be a bottleneck for crysis 3???

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a b V Motherboard
June 10, 2013 1:23:23 PM

dexter12 said:
lostgamer_03 said:
The Q9400 will be a bottleneck in situations where a game is CPU dependent. Large MMO scale games for example are often pretty CPU intensive. However most games are GPU dependent and the Q9400 will likely be a okay/good match with either GPUs.

I would rather pick the 7850 as it is ofc faster than the 7790, just given by the name - If you got the money ofc. :) 


I wanted to upgrade to play crysis 3 and similar games...i think it wil utilise considerable cpu usuage...though it might seem odd but im not the multiplayer type..i have a 1440 *900 res lcd which i dont plan on upgrading so i think i can play crysis 3 even on high settings..do u think my cpu would be a bottleneck for crysis 3???



at 1440x900 I can assure you that you will get at least above 30 FPS with high settings and some aa turned on. The GPU will actually might let you go even higher.

Here is a video of the CPU you have and the Radeon 7850 gaming Crysis 3 at ultra settings 1080p (1920x1080) with a decent FPS around 30. This was even at the beta, where optimization was lacking.

http://www.youtube.com/watch?v=JD4ZzYdjGfo - The video.
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June 10, 2013 3:34:06 PM

lostgamer_03 said:
dexter12 said:
lostgamer_03 said:
The Q9400 will be a bottleneck in situations where a game is CPU dependent. Large MMO scale games for example are often pretty CPU intensive. However most games are GPU dependent and the Q9400 will likely be a okay/good match with either GPUs.

I would rather pick the 7850 as it is ofc faster than the 7790, just given by the name - If you got the money ofc. :) 


I wanted to upgrade to play crysis 3 and similar games...i think it wil utilise considerable cpu usuage...though it might seem odd but im not the multiplayer type..i have a 1440 *900 res lcd which i dont plan on upgrading so i think i can play crysis 3 even on high settings..do u think my cpu would be a bottleneck for crysis 3???



at 1440x900 I can assure you that you will get at least above 30 FPS with high settings and some aa turned on. The GPU will actually might let you go even higher.

Here is a video of the CPU you have and the Radeon 7850 gaming Crysis 3 at ultra settings 1080p (1920x1080) with a decent FPS around 30. This was even at the beta, where optimization was lacking.

http://www.youtube.com/watch?v=JD4ZzYdjGfo - The video.


there is NO way you can get 30 on ultra at 1080p maybe high on 900p. I can barely get that (25-30) with my 7950 on 1080.
with your cpu you should get the 7850 but dont expect to play crysis 3 maxed. crysis 3 is the most intense game though so expect other games to work better
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a b V Motherboard
June 10, 2013 3:52:10 PM

thdarkshadow said:
lostgamer_03 said:
dexter12 said:
lostgamer_03 said:
The Q9400 will be a bottleneck in situations where a game is CPU dependent. Large MMO scale games for example are often pretty CPU intensive. However most games are GPU dependent and the Q9400 will likely be a okay/good match with either GPUs.

I would rather pick the 7850 as it is ofc faster than the 7790, just given by the name - If you got the money ofc. :) 


I wanted to upgrade to play crysis 3 and similar games...i think it wil utilise considerable cpu usuage...though it might seem odd but im not the multiplayer type..i have a 1440 *900 res lcd which i dont plan on upgrading so i think i can play crysis 3 even on high settings..do u think my cpu would be a bottleneck for crysis 3???



at 1440x900 I can assure you that you will get at least above 30 FPS with high settings and some aa turned on. The GPU will actually might let you go even higher.

Here is a video of the CPU you have and the Radeon 7850 gaming Crysis 3 at ultra settings 1080p (1920x1080) with a decent FPS around 30. This was even at the beta, where optimization was lacking.

http://www.youtube.com/watch?v=JD4ZzYdjGfo - The video.


there is NO way you can get 30 on ultra at 1080p maybe high on 900p. I can barely get that (25-30) with my 7950 on 1080.
with your cpu you should get the 7850 but dont expect to play crysis 3 maxed. crysis 3 is the most intense game though so expect other games to work better


I suspect the guy not using AA, which is where the game are most demanding. Just cranking up details doesn't effect performance as much, as increase the AA in the game. For example I don't see much more than a 3-5 FPS difference going from medium to high and a 5-10 FPS difference going from high to very high. However increasing AA levels really cuts the performance. Just by enabling SMAA at 4x my FPS is decreased by 30-40%.

I can play the game in ultra settings myself with 2x SMAA and every thing else at ultra with FPS at most times above 50 at 1080p (got quite a bit of an overclock on my GPU atm.), so it should not be so unreal that a Radeon 7850 could run the game at high or very high with FXAA or no AA enabled at decent, around 30, FPS at 1080p. The 1440x900 res the OP has should be no problem for the 7850 almost maxing.

The Radeon 7850 is overall in average 30% slower than a GTX 670, which I currently own. I base my statements upon the 30% difference.
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