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- Apr 30, 2008
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- Birmingham, UK
What cooling? This happened with the HD2900XT as well, breaking the 1000Mhz core but then real life results weren't as lucky
Better to wait on real reviews.
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The first of these changes is that the chip has been given a tune-up to tighten the clock loops and enhance the power distribution. The second change is that the chip can now operate on two distinct power planes; one for the 3D core and one for the memory controller. This provides for greater control of the voltages and allows the chip to run closer to its optimal range. The dual power plane design also means that there is a higher potential top-end frequency and lower idle power consumption, since there is more voltage control over the different parts of the ASIC.
As a result, overclocking potential is off the charts. Reports have been flooding the net about this chip running at and in excess of 1GHz; a feat never before achieved with reference cooling solutions. Couple this with the fact that the memory can also be overclocked near 1.2GHz, and you have a very enthusiast-oriented card that should outperform even the most expensive competing products - and that’s not even the best part. According to our sources, you don’t need to go out and buy a factory-overclocked card to be able to reach 1GHz; mostly all cards based on the reference ATI design should be able to hit this milestone. Sweet.
I wonder what will happen if all of a sudden intel releases a GPU 1.5x more powerful than the ati/nvidia offering and sell it 1.5x cheaper. And with near-perfect drivers. It surely will shake things up a bit I highly doubt it'll happen though. Or least not sometime soon.
Yeah I won't be surprised if a 4890 exceeds 1ghz. But i think it is really just the RV770 core with a higher stock voltage allowing that high stock clock, if that's the case then there won't be much headroom for OCing. I hope i'm wrong though coz i want to see a card OCed to 1ghz+ w/o vmods Still, quite disappointed because it looks like they won't increase the number of SPs. All it is basically is an overclocked 4870...
The GTX275 looks more promising with 240 cores. The performance might scale better than the 4890 when overclocked, and seeing the stock clock (though not final), looks like there is some good headroom for overclocking.
I guess we'll find out which one will perform better in a few weeks time. But my bets on the gtx275 this time
Yeah that'll NEVER happen. Intel only knows how to make "functional" graphics cards.. and BARELY FUNCTIONAL at that!
hey mate, you from Australia?Ey richard, got AU$489 to burn?
http://www.pccasegear.com/index.php?main_page=product_info&cPath=416&products_id=11039
You are just as bad in the other direction, only you love Nvidia. Have you gone as far as I have and actually used every series personally from both brands? I have and continually go back to ATI.
http://www.google.com/search?hl=en&safe=off&q=driver+stopped+responding+nvlddmkm
Just because you don't get it, doesn't mean the large majority are as lucky. Look at the first post on the official nvidia forums, over 113 pages.
ATI may necessarily have more bugs, but they tend to be minor. Nvidia has the joy of entire system crashes.
that's the way!No I do not have the free time and money to waste on every series of cards from both brands, but I have owned several from Nvidia and ATI... and just like you have had better experience with ATI, I have had better experience with Nvidia. Your wording was wrong and suggested fanboism, and you completely missed the sarcasm in mine... for all you know I have changed my mind to getting a 4870 1GB card.
And I don't 'love' any brand. I just haven't had my system crash on me so many others have.
yeah, sorry. shuodln't have assumed your prices would be the same. here in Australi though, you can get the 1GB 4870 with Asus' own cooler for $5 more than the stock 512MB 4870, and also a lot chaeper than other companies.Im not looking for a specific brand... sales are fluctuating for both brands at the moment. And Sapphire 4870 1GB is cheaper right now. I'll wait for 4890 launch and grab 4870 when the prices fall further.
Burst memory reads are not supported by the RV770; however, the 710, 730, 740 and 790 do support it.
certainly not!The R700 ISA (Instruction Set Architecture) document mentions in at least one point functional differences between RV770 and RV790, so I wouldn't say both are the same chip...
If you want to see what I'm talking about, download this, go to section 7.3 and look for
Just don't collapse when you see the 392 pages technical document :lol:
Anyway, I don't think that changes things so much. In the end, what we get is a little update of the RV770 chip with some tweaks and fixes here and there, including (but not limited to) the ability to clock much higher than the previous version so it can be made more powerful. That's what I expect from a RV770->RV790 or HD4870->HD4890 transition given the names, and that's what I expect because of everything I've already seen around this topic. Given the chip/card names, I think that what we should expect is a slightly improved RV770, and I think that's exactly what they're gonna release...
PS: A RV770 that can be clocked at ~1000MHz at stock cooling, probably well over that with better cooling, isn't so bad anyway, is it?
I know some pplz have the 8600gt/s reach 1ghz before (google will reveal the forums). As for a 4830, i know pplz get to 950mhz stable. The 4870 i have yet to see someone to do 1ghz stable...