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6790 or 6850? - Page 3

post #21 of 43
Quote:
Originally Posted by Redwoodz View Post
after doing some further research on HWBOT, I can verify the crossfire performance between the 6790 and 6850, they score very, very closely. Furthermore, the 6790 seems to have a slight edge in overclocking.
i am at 905/1200 gpu/mem. i have an auto fan profile setup and never see above 67*C.
i have not and will mot flash the bios to a higher voltage though. killed my last card doing that..lol
post #22 of 43
Quote:
Originally Posted by kelvintheiah View Post
how about heat issue on crossfiring 6790 vs 6850? which would run hotter on crossfire? im planning on crossfiring but im also considering buying one card like 6850 if it can perform better. here's my options in my mind.

option 1: buy 1 6790 and buy 1 later for crossfire.

option 2: buy 1 6850 and wait for 7000 series.

my only concern is that, would option 1 perform better on BF3 with 1920x1080 or would option 2 perform better than 6850 on a large scale? 6850 cost more than a 6790.
Power consumption of the 6790 is nearly the same as the 6850, ditto for heat output. Both of these cards deal with the heat quite well, so with a reasonably good case cooling setup either will be fine in Crossfire. If you want the best AMD single card solution for BF3 for less than $200, I would have to say to spend a few more $ than the 6850 and go for a 6870. Honestly though, your awesome mobo is screaming for a Crossfire setup, and the 6790 x 2 is the best bang for the buck by far.

Edit to add: For me, a lot of the "fun" in PC building is getting great performance at the minimum price. Anybody can spend $2000 on a gaming rig and have it rock out all the games, but doing it for less than half that is a challenge and quite satisfying when you can make it happen. Along this train of thought I have spent $89 on my first 6790, and intend to grab another in the next couple of months. I am thinking I can score an open box unit for less than that during the post-Christmas return bonanza, and not have to bother with any MIRs for my second card. Keep in mind that PC does not include a Crossfire bridge with their cards, you will have to drop $10 on one or scrounge one from somebody if you want to use two of that particular brand.
Edited by Jagged_Steel - 10/30/11 at 7:56am
    
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post #23 of 43
Thread Starter 
i think ill be getting 6850. i think it's best for me to settle for a single card at the moment. ill be updating tomorrow if my rig post lol. all components are still inside box and haven't touch them yet. hope no DOA.
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post #24 of 43
Thread Starter 
@jagged_Steel

lol still remember me? im the one who's asking for a good mobo for 1055t. xD my first choice was m5A97 evo that you recommend but when i had the money and plan to buy, i saw asrock 990fx extreme 4 which costs a little higher compared to m5a97 evo and yet its a newer chip. xD. i think ill go for 6850. ill just crossfire them in the future if needed. but why is it crossfiring 6790 perform well on or on par with crossfiring 6850?
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post #25 of 43
Thread Starter 
btw, will my sig cpu bottleneck on crossfiring 6790/6850?
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post #26 of 43
Quote:
Originally Posted by kelvintheiah View Post
@jagged_Steel

lol still remember me? im the one who's asking for a good mobo for 1055t. xD my first choice was m5A97 evo that you recommend but when i had the money and plan to buy, i saw asrock 990fx extreme 4 which costs a little higher compared to m5a97 evo and yet its a newer chip. xD. i think ill go for 6850. ill just crossfire them in the future if needed. but why is it crossfiring 6790 perform well on or on par with crossfiring 6850?
I thought I recognized your name. Good choice on the mobo, I am a bit jelly. The reason the 6790s Crossfire so well has to do with the nature of how the GPU chips are "binned" to become each particular model. A 6870 is a BARTS GPU that functions 100% and clocks high at stock voltage. These are the "golden" chips . Chips with slightly slower clock speeds and maybe a couple defects have some of the cores and shaders- etc turned off and are then locked as 6850s. 6790s are the same chip that have quite a few defective cores, BUT are selected for having the good cores having better than average performance. Also, they have intentionally selected the best possible ratio of shaders- etc to cores, so these end up scaling better than the 6850s and 70s.

Edit to add: I think your CPU will do fine with any real world task you are likely to throw at it.
Edited by Jagged_Steel - 10/30/11 at 8:11am
    
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post #27 of 43
Thread Starter 
have you played BF3? if yes what FPS are you getting?
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post #28 of 43
HD 6790 will never for the life of it be anywhere as good as the HD 6850 due to the cut down ROPs (and to a lesser extent the shaders). This gives it literally half the pixel fillrate.
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post #29 of 43
Quote:
Originally Posted by kelvintheiah View Post
have you played BF3? if yes what FPS are you getting?
No, I havn't. I am not a much of a FPS player, I mainly play RTS/Strategy type games. I have seen the 6790 listed on BF3 performance charts though, and a single card can run the game at 1920x with reduced settings @ above 30 fps, or lower res with high settings getting the same playable fps #s. The heaviest game I play right now is Napoleon: Total War (23 gigs of graphics- no slouch in this department) and it handles the battle sequences with around 10,000 units on the battlefield at Ultra settings and I never get a hiccup- a solid 60 fps when locked in with vertical sync enabled.
    
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post #30 of 43
Edit: I totally thought you were asking 6850 or 6970... feel free to laugh
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