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#3389826 - 09/14/11 07:49 AM
Re: AMD/ATI HD7000 Series Official -- 4 Weeks?
[Re: Allen]
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Skate Zilla HD Studios
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#3389906 - 09/14/11 09:57 AM
Re: AMD/ATI HD7000 Series Official -- 4 Weeks?
[Re: Allen]
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Senior Member
Registered: 10/13/99
Posts: 4748
Loc: Ohio USA
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The linked article confirms (doesn't prove) my previous "guess": That a single HD7970 should be almost equivalent to my 2x HD5870 CrossFire -- without the CrossFire limitations. I.e. HD7970 has roughly 2/3 the total shaders as 2x HD5870 -- but, it has more efficient shaders (some say by 20+ percent) and faster clocks (another 20+ percent considering both memory and GPU). So, in very rough order of magnitude math, 1.44x2048(HD7970 shaders) is equivalent to 2950 HD5870 shaders. 2x HD5870 has just over 3200 shaders. However, CrossFire (and SLI) does not scale 100 percent -- so, 3200 CrossFire shaders is more like 2700 single card shaders. If one followed all that, it means that the single HD7970 might out perform the CrossFire 2x HD5870 on average. Hope the rumor turns out true -- because I am psychologically committed to wanting an HD7970 when they are released 
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#3389909 - 09/14/11 10:00 AM
Re: AMD/ATI HD7000 Series Official -- 4 Weeks?
[Re: Allen]
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Member
Registered: 03/20/03
Posts: 1934
Loc: Andover, UK
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If that is the case then isn't the GTX580 in the same ball park!......and won't have the price premium?
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#3389926 - 09/14/11 10:21 AM
Re: AMD/ATI HD7000 Series Official -- 4 Weeks?
[Re: Allen]
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Skate Zilla HD Studios
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Registered: 11/24/04
Posts: 8120
Loc: Virginia Beach, VA
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The linked article confirms (doesn't prove) my previous "guess": That a single HD7970 should be almost equivalent to my 2x HD5870 CrossFire -- without the CrossFire limitations. I.e. HD7970 has roughly 2/3 the total shaders as 2x HD5870 -- but, it has more efficient shaders (some say by 20+ percent) and faster clocks (another 20+ percent considering both memory and GPU). So, in very rough order of magnitude math, 1.44x2048(HD7970 shaders) is equivalent to 2950 HD5870 shaders. 2x HD5870 has just over 3200 shaders. However, CrossFire (and SLI) does not scale 100 percent -- so, 3200 CrossFire shaders is more like 2700 single card shaders. If one followed all that, it means that the single HD7970 might out perform the CrossFire 2x HD5870 on average. Hope the rumor turns out true -- because I am psychologically committed to wanting an HD7970 when they are released Not To Mention Using Less Power, Putting out Less Heat. Add in the Supposed XDR performance jump and the PCIe 3.0 Bandwidth Jump...
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Skate Zilla
Chevron 11 (Born Feb. 2012)
Cooler Master HAF 922(Mesh Side), 700W OCZ, Windows 7 Pro, Windows 8 Beta
ASRock Fatal1ty 990FX Pro, Corsair H100 Water Cooled AMD FX-8120@4.0 GHz, 16GB G.SKILL Sniper @ DDR1600, WD 1.5TB Black
Sapphire RadeonHD 7950@1.0 GHz Core/6GHz Mem., ASUS VS248H-P 24" LED x 3, 5760 x 1080 Eyefinity,
Creative XFi Fata1ity Platinum Champion, Intensity Pro 10-Bit HDMI Video Recording, Ceton InfiniTV 4 PCIe
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#3389949 - 09/14/11 10:44 AM
Re: AMD/ATI HD7000 Series Official -- 4 Weeks?
[Re: JAMF]
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Frugalite & P-38 fan
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Registered: 05/29/10
Posts: 2779
Loc: The Netherlands
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... to the patent troll we know as Rambus. /me does a little happy dance. "USPTO declares key Rambus patents invalid" http://techreport.com/discussions.x/21630
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#3389955 - 09/14/11 10:49 AM
Re: AMD/ATI HD7000 Series Official -- 4 Weeks?
[Re: Allen]
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Veteran
Registered: 05/21/02
Posts: 13057
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Don't suppose these cards could effectively run games 3 30" monitors (7680x1600) could they? I am torn between keeping my single 30" or moving to 3 27"-- it's more the loss of vertical resolution (from 1600 to 1080) that I want to avoid.
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#3390274 - 09/14/11 06:31 PM
Re: AMD/ATI HD7000 Series Official -- 4 Weeks?
[Re: peppergomez]
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Senior Member
Registered: 10/13/99
Posts: 4748
Loc: Ohio USA
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Don't suppose these cards could effectively run games 3 30" monitors (7680x1600) could they?... If my daydreaming calculations prove accurate, two HD7970 in CrossFire at 7680x1600 would perform slightly better than my two HD5870 in CrossFire at 5760x1200. So, CrossFire would make 3x 30" practical, for me. However, our expectations may be different; so, I can't be sure how someone else would see things. Without CrossFire it would work well enough at 30" Eyefinity in many games, for me (a single HD5870 works well enough in Eyefinity in my system for many games). But, how it would look to you in the games you want to play -- I don't know. Typically, our flight simulations are CPU limited. So, a single HD7970 should work relatively better in flight sims, I am guessing. It should "blow away" most XBox ports -- XBox ports don't stress the graphics card much, usually.
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#3390403 - 09/14/11 09:56 PM
Re: AMD/ATI HD7000 Series Official -- 4 Weeks?
[Re: Allen]
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Veteran
Registered: 05/21/02
Posts: 13057
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Thanks. Game wise, here's what I imagine will be on my plate over the next year:
Falcon 4 BMS
DCS A-10
Battlefield 3
Arma3
Bioshock Infinite
Elder Scrolls Skyrim
X Rebirth
Dead Island
Red Orchestra 2
Mass Effect 3
Prey 2
Rage
Some of these would be pretty demanding on the GPU I would expect. At a resolution of 7560x1600, I am pretty sure I would be fine without using anisotropic filtering and other demanding settings. Do you know if any major sites like Tom's have tested the performance of the most powerful cards at this resolution?
Edited by peppergomez (09/14/11 09:58 PM)
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