They could have adjusted the price accordingly.Also a cooler chip is what everyone wants,and what they need,I saw at least 100 pages of 4870 overheating threads,Which also hurt sales.
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Why would performance be the same.Some titles will and some will not benefit.Doesn't aa perf get's better with faster and more memory bandwidth.
AA perf of the RV7XX arch is already great, especially 8, what it needs is more texture power and the obligatory shader power to go with it.
Where's my single card 16x aa.:shrug:
8xaa is excessive once you are at 1920x1200 or higher... the more pixels the less AA is needed in the first place. AA is actually an image quality "patch" if you will, more to compensate for low resolution than to increase quality of the image
^Which explains why I didn't really need much in the way of AA on my old 2048x1536 CRT 19" monitor.^ :D
Nah, I still crave for 8xAA on my 1920x1200 LCD when I play Company of Heroes, or basically any other games. The jagged edges are just more pronounced on LCD screens than CRT's. I would guess that at 2560x1600, 8x is probably excessive, in my book at least.. After all, the resolution is king...
Guys, what if this is really a "cover-up" for the ultimate 40nm refresh of the same chip generation, like the 2900--> 3870? I wouldnt be surprised if ATI has caught Nvidia off-guard at this. At 40nm, even 950 MHz seems possible. It would just really make sense to have more TMU's.
With R800 that might include DX11 hardware, ATI really needs to improve anisostropic filtering so that it's no longer angle-dependent at 45 degrees. Come on, bring on 32x AF!!!!!!!!!!!!!!!!!!!!! At 2560x1600, we'd certainly see a big improvement in IQ with 32x AF.
rv770/790 is already dx11, it has programmable shaders so it doesnt need to be released specifically for DX11
That is, FULL DX11 hardware.. not just the tesselators or partial DX11 functions
like I said programmable shaders = full dx11, or at least thats what I have been told....
Debunked :D
OK, shameless translating continues.
RV790 is a product made from the 55nm GT process. The 55nm GT is the newer improved 55GC process.
40Nm would be very unlikely since ATI had lots of trouble with the RV740. Lots of leakage and clockspeed problems.
Most of those problems may be solved now, but its doubtful that ATI would have working samples by now, and fully working GPU's within a few weeks while they still have problems with RV740, which should be a less difficult design.
and they pushed the launch to april instead of may, don't sound that they have problem to me?Quote:
40Nm would be very unlikely since ATI had lots of trouble with the RV740. Lots of leakage and clockspeed problems.
well we could all possibly aggree then that the bigger die would've been better then , cooler and possibility for 512bit bandwidth ... yes?
This leads us to think that maybe Ati jumped the gun on its latest die shrink
simply to spite Nvidia ....? possible ? probable ? it seems so...
Heh.. all ATI needed to do was just turn up the fan speed by just a LITTLE bit. Most enthusiasts here are manually turning up the stock fan speed up to like 40 or 50 or as high as 60% for reasonably quiet operation at low temperatures. So, I've always read that those chips run quite cool at 50% fan speeds, and trust me, I've read countless threads..
Yeah, why does it take so long for ATI to make a chip that is just slightly larger than the RV740 on 40nm? I mean, just maybe 50% larger chip, but with a delay of 6 months?? Hopefully, ATI learned a lesson for not releasing the RV770 any sooner on 55nm (8 month gap after releasing the higher-clocked RV670 on 55nm). ATI must've been desperately waiting for GDDR5 memory after all, I guess, for more "attractive-ness" and cheaper 256-bit interface that requires less pins and slightly smaller die size "real-estate".
It wouldn't surprise me if 40nm would be overkill for a slightly upgraded RV770.
RV790XT 850Mhz Engine, 975Mhz Memory (1GB GDDR5)
RV790Pro
RV740XT 700Mhz Engine, 800Mhz Memory (512MB GDDR5)
RV740XT 700Mhz Engine, 900Mhz Memory (1GB GDDR5)
RV740Pro 600Mhz Engine, 900Mhz Memory (1GB GDDR3)
Maybe on 40nm the RV790 could have it 900 or 950, but clockspeed alone probably isn't enough. On 40nm they would have add more muscle to the core. RV790 doesn't need to be much faster, and shouldn't because there has to be some room for the RV870 (40nm :D) when its launched end this year (samples will be ready in Q2).
don't quote shintai :( if you do i can read his replies :(
BTW, 4870 is designed for 55nm, right? so 40nm is only a half node away from it's orginal design. Would ik be possible to just make a 40nm dieshrink to cut costs? (like nvidia did with GTX280/260)
While on the other hand, a new 55nm chip (RV790) is created which is an optimized, better RV770?
just guessing though
I thought the same, if the 40nm would have good yields dumb shrinks would happen during this price war, and that we have yet to see such cards is the proof something isn't right at TSMC.