Posted: Sat Aug 02, 2008 5:50 pm Post subject: RV870 codenamed "Lil Dragon", 40nm
It's been known for some time that RV870 would be a shrink of RV770. The node following 65/55nm would be 45/40nm, but we weren't sure if AMD would go to 45nm or directly to half-node 40nm. It's now clear that AMD will go directly to 40nm and aim for a performance per watt ratio twice that of RV770. RV870 has been code-named "Lil Dragon", which does indicate that this will be something small, yet something to fear.
The overall performance has been suggested to be somewhere around 20% better than RV770 with a significant drop in power consumption. This points to 960 shaders (192x5), 48 texture units, 24 ROPs and so forth. If this is the case, TDP of the RV870 should be around 150W at most with today's frequencies. This is just an estimate on our part as technical specifications are still hard to come by. We also presume AMD to stay at DirectX 10.1 for now.
Joined: 11 Dec 2003 Posts: 4750 Location: Pennybridge, Sweden
Posted: Mon Aug 04, 2008 5:54 pm Post subject:
I've gotten a lot of questions regarding the 20% more performance, and this is just an indication of the hardware specifications, not so much the final in-game performance.
Source did say performance though, but it all seemed to point to hardware, not software.
//Andreas _________________ "I'm sort of a postmodern vegetarian, I eat meat ironically" "You are our Swedish superhero "
Forget everything, knowledge is your enemy, it's only going to make you second-guess yourself."
Joined: 06 Aug 2008 Posts: 156 Location: Sweden, Gothenburg
Posted: Sun Aug 10, 2008 1:05 am Post subject: Re: RV870 codenamed
Andreas G wrote:
<P>It's been known for some time that RV870 would be a shrink of RV770. The node following 65/55nm would be 45/40nm, but we weren't sure if AMD would go to 45nm or directly to half-node 40nm. It's now clear that AMD will go directly to 40nm and aim for a performance per watt ratio twice that of RV770. RV870 has been code-named "Lil Dragon", which does indicate that this will be something small, yet something to fear.</P><P>The overall performance has been suggested to be somewhere around 20% better than RV770 with a significant drop in power consumption. This points to 960 shaders (192x5), 48 texture units, 24 ROPs and so forth. If this is the case, TDP of the RV870 should be around 150W at most with today's frequencies. This is just an estimate on our part as technical specifications are still hard to come by. We also presume AMD to stay at DirectX 10.1 for now. </P>
Posted: Mon Aug 11, 2008 6:00 pm Post subject: Re: RV870 codenamed
nvidiaamd wrote:
Quote:
If this is the case, TDP of the RV870 should be around 150W at most with today's frequencies.
now that is what i call improvement
keep on goin ATI!
I think 150W is actually the worst-case scenario. Judging by the moderate increase in processing units, a die-size below that of RV670 is quite probable, and with that, a power-consumption-per-clock on par with or below RV670 is likely as well. And that means, clockspeeds of 800+ @ the power consumption of a Radeon 3870 are entirely possible. So at todays clockspeeds, we might look at TDPs of as low as 110W.
What I hope is that the 24 ROP part is true. ATI hasn't increased the number of ROPs since the R420/X800 series, I think it's about time. In terms of pixel fillrate Nvidia still reigns supreme, I think it's actually one of the two reasons why GT200 still wins in most benchmarks (the other being TMUs, obviously).
Well, 20% more SPs and TMUs + higher core- and memory clocks could have the same effect
But right now it's just speculation anyway.
What I'm rather sure about though, I have a feeling we won't see another R520/R600 fiasco from AMDs graphics division anytime soon, at least not until the next completely new architecture arrives.
Joined: 11 Dec 2003 Posts: 4750 Location: Pennybridge, Sweden
Posted: Tue Aug 12, 2008 5:17 pm Post subject:
I sincerely hope so. Since AMD is all for the performance segment now, if that would fail, all other products using the same chip would also fail. It's a bit more dangerous now that way.
//Andreas _________________ "I'm sort of a postmodern vegetarian, I eat meat ironically" "You are our Swedish superhero "
Forget everything, knowledge is your enemy, it's only going to make you second-guess yourself."
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