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[VC] AMD Radeon R9 290X with Hawaii GPU pictured, has 512-bit 4GB Memory - Page 14

post #131 of 1055
Quote:
Originally Posted by Joa3d43 View Post

...ran across this at TechPWU ..much the same info on design....just wondering about the clock info, especially the VRAM clocks- does look a trifle 'low'

LEAD Technologies Inc. V1.01

Agreed. I was expecting 1GHz, or close to it, but 800MHz? The memory clock on the 7970 was 1375MHz (5500 effective).
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post #132 of 1055
Looks like 1 slot?
post #133 of 1055
Quote:
Originally Posted by Joa3d43 View Post

...ran across this at TechPWU ..much the same info on design....just wondering about the clock info, especially the VRAM clocks- does look a trifle 'low'

The wider the bus the lower the memory clock needs to be to get the same bandwidth. If its getting all the bandwidth it needs, clocking it higher is only going to draw more power.
post #134 of 1055
Quote:
Originally Posted by Yeroon View Post

The wider the bus the lower the memory clock needs to be to get the same bandwidth. If its getting all the bandwidth it needs, clocking it higher is only going to draw more power.

...Bios editors and MSI AB to the rescue smile.gif
post #135 of 1055
Quote:
Originally Posted by Joa3d43 View Post

...ran across this at TechPWU ..much the same info on design....just wondering about the clock info, especially the VRAM clocks- does look a trifle 'low'

LEAD Technologies Inc. V1.01
5mln transistors, 2560 sp, low clocks.... not impressive
post #136 of 1055
512-bit is better than 384-bit when it comes to memory clock vs bandwidth scaling.
When both are clocked at 1700 MHz for example.
The 512-bit will end up with 435.2 GB/s compared to only 326.4 GB/s for the 384-bit card.
That's what I mostly like about the 512-bit bus. scaling vs clock yield a lot.
Edited by HeadlessKnight - 9/21/13 at 2:12pm
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post #137 of 1055
Quote:
Originally Posted by wertmur View Post

5mln transistors, 2560 sp, low clocks.... not impressive

You realize they have no idea either. All taken from rumors. Sp's mean little as we are looking at a new microarchitecture and have no idea what has been changed.
     
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post #138 of 1055
At 512-bit, a $499 price tag seems like a dream now frown.gif
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post #139 of 1055
And what is exactly unimpressive about it? Since when do stock clocks matter around here? Certainly not to the legion of Titan and 780 owners (myself included) who keep saying there's no way for the R9 to keep up with GK110 when factoring in the AB hack and unlimited voltage. Why only consider stock clocks with this new AMD card while at the same time comparing it to 1400+MHz, hacked voltage Titans???
post #140 of 1055
Quote:
Originally Posted by HeadlessKnight View Post

512-bit is better than 384-bit when it comes to clock vs bandwidth scaling.
When both are clocked at 1700 MHz for example.
The 512-bit will end up with 435.2 GB/s compared to only 326.4 GB/s for the 384-bit card.
That's what I mostly like about the 512-bit bus. scaling vs clock yield a lot.

...there might be another 'hidden advanatge', all this being speculation anyways until the first retail samples are reviewed...but I was talking with an LN2 friend of mine about the 780 Lightning, which runs Elpida memory which is known to not quite overclock as much as Hynix or Samsung...whether rumour or real, there seem to be some 'supply tightness' with some VRAMs (semi-rumour?)

...if that is the case, the 512 bus route may be a very smart move by AMD
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