Unknown Soldier
Veteran
As long as it can consistantly average 100FPS or more at 1680x1050 with 4xAA and 16xAF then it should be a winner .. and by consistantly I mean 98% of the time.
US
US
AMD confirms R680 is two chips on one board
- Thread starter nicolasb
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vertex_shader
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Little preview
Idle consume more power than the HD2900XT.
Idle consume more power than the HD2900XT.
vertex_shader
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vertex_shader
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Not particularly surprising when you consider it contains almost twice as many transistors! Quite impressive that it uses (very) slightly less power under full load, however.
Yep, now it just needs to kick some ass so we can get some movement in the high-end.
Sound_Card
Regular
PCIe2.0 seems to allow this card to flex.
Jawed
Legend
http://forum.beyond3d.com/showpost.php?p=1106864&postcount=96
Though I identified the wrong chip (there's a 3 port version of the PLX chip) the chip on the boards we've seen so far only does PCI Express 1.1, it seems.
Now, I'd be a happier bunny if the released cards do use PCI Express 2.0 - but I'm pessimistic right now.
Jawed
Sound_Card
Regular
err I'm confused. The graph I was looking at showed a considerable boost on a PCIe2.0 motherboard as compared to PCIe1.1. Is this due to the PCIe1.1 bus chip between the dies?
I think that's one of the promo graphs that ATi released back with the 3870, touting the benefits of PCIE 2.0.
Sound_Card
Regular
This is the russian translation of the chinese original translated to english. lol.
That comfirms Jawed's observation. That graph does indeed seem to be the x2 from the impression I get.
So some qustions...
1) What justifies the performance increase? Should not the PCIe2.0 bus be bottle necked by the PEX8548? However, the x2 is clearly flexing in 2.0 over 1.1.
2) Why did they choose the 1.1 chip over the 2.0? Is their some sort of backwards compatibility problem with existing 1.1 spec motherboards with using the PEX6347?
Why should there be? The current 2.0 cards having problems are either due VIA just screwing something up, practicly meaning they're not following the spec 100%, and in some cases, too high clocked PCI Express bus (some motherboards have it at 133MHz, and have had problems with the new 2.0 cards, but downclocking it back to normal 100MHz has reportedly solved these problems)
Here is the benchmark test that makes worthy upgrade from G80Ultra to R680.
R680 almost twice as fast compare to G80 at 2048x1536 resolution. Looks like people who have 30" inch monitors can enjoy extreme quality smooth play @ 2560x1600 using ATI 3870X2.
Edit: Too bad the ATI drivers are not optimize for other games
. Like Crysis for example which sucks @ 2560x1600 resolution.
R680 almost twice as fast compare to G80 at 2048x1536 resolution. Looks like people who have 30" inch monitors can enjoy extreme quality smooth play @ 2560x1600 using ATI 3870X2.
Edit: Too bad the ATI drivers are not optimize for other games
. Like Crysis for example which sucks @ 2560x1600 resolution.
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Unknown Soldier
Veteran
Anyone notice the inconsistancy of the results.
Notice the NFS 11 result at the bottom .. they say 100/100 compared to the Ultra, yet the test shows it's almost 2x slower thus it should actually be 54/100 for the Ultra.
US
Notice the NFS 11 result at the bottom .. they say 100/100 compared to the Ultra, yet the test shows it's almost 2x slower thus it should actually be 54/100 for the Ultra.
US
Silent_Buddha
Legend
Now if they found some way to make it appear as 1 card to all games with no need of AFR, I'd be sorely tempted to get one...
As it is, it's probably just AFR and as such not at all interesting. Although thank god they broke through one barrier at least. Allowing at least extended display support on multiple monitors with CF enabled.
I wonder if their extended monitor mode will support one monitor at 2560x1600 paired up with another monitor at 1200x1600...my current setup.
Although I'm tempted to get multi-GPU just to do a 1200x1600 monitor - 2560x1600 monitor - 1200x1600 monitor setup.
Regards,
SB
As it is, it's probably just AFR and as such not at all interesting. Although thank god they broke through one barrier at least. Allowing at least extended display support on multiple monitors with CF enabled.
I wonder if their extended monitor mode will support one monitor at 2560x1600 paired up with another monitor at 1200x1600...my current setup.
Although I'm tempted to get multi-GPU just to do a 1200x1600 monitor - 2560x1600 monitor - 1200x1600 monitor setup.
Regards,
SB
Are you talking about 3DFX Vodoo5 5500.
Another review, this one in english:http://www.fpslabs.com/reviews/video/amd-radeon-hd-3870-x2-review
Would you people doing serious reviews, that show up only post-NDA lifting, please, please get the clock-rates right?I've seen mem-clocks being all across the board, from 2400 to 1800. It's either the case of there being more SKUs and reviewers/leakers getting different thingies, or not actually checking and simply reproducing something you've read somewhere at some point.
Would you people doing serious reviews, that show up only post-NDA lifting, please, please get the clock-rates right?I've seen mem-clocks being all across the board, from 2400 to 1800. It's either the case of there being more SKUs and reviewers/leakers getting different thingies, or not actually checking and simply reproducing something you've read somewhere at some point.
vertex_shader
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