UniversalTruth
Veteran
EU cripples future graphics cards
- Thread starter fellix
- Start date
Earlier we saw a doubling of transistor density every 18 months. We also saw increased frequency scaling as gate oxides became thinner and thinner and we had ever increasing power consumption.
That is over.
Moore's law is dead, we now have 24-30 months between doubling of densities, and frequency increases are all but gone.
Improvements to GPUs are incremental. I've upgraded from a 4890 to a 7970 GE, performance has only doubled. There is 3 generations and 3½ years between the release of the two cards. The 7970 uses more power as well. The days when you upgraded your GPU yearly and saw a doubling of performance are over.
Note: The EU directive is only about idle power and, IMO, they aren't nearly ambitious enough.
Cheers
You make it sound as if that slow.
Yes, compared to 10y back. No, compared to anything else.
UniversalTruth
Veteran
http://www.techpowerup.com/reviews/HIS/Radeon_HD_6870/29.html
http://www.techpowerup.com/reviews/AMD/HD_7970_GHz_Edition/28.html
45% once (4890 vs 6870), and 117.4% (6870 vs 7970 GE) for th second time.
108 W on average vs 209 W on average.
The pace of development is irrelevant, as is the "powerwall" ... those are only relevant to the ON state power, which aren't what this regulation is about.
If this regulation couldn't be met because the ASICs are too large and power regulation not advanced enough that would be one thing ... but those things aren't true. These regulations can be met, when they aren't met it's because the engineering cost to meet them was deemed too high ... now for sure they are not.
If this regulation couldn't be met because the ASICs are too large and power regulation not advanced enough that would be one thing ... but those things aren't true. These regulations can be met, when they aren't met it's because the engineering cost to meet them was deemed too high ... now for sure they are not.
UniversalTruth
Veteran
At a guess, perhaps because going "off-die" for data is a relatively large consumer of energy?
"SLEEP/IDLE/OFF power consumption"
It's used as a proxy for performance, and it's a pretty decent one at that ... there is an exemption for the very highest performance desktop machines (CPU/GPU/PSU wise) for the next 12 months.
Slicing by memory bandwidths is a rough proxy for segementation (or chip sizes); this has been used in a number of cases previously. It undersood that that a bigger ASIC is going to have more static leakage power, even in relatively low power states and so a "one size fits all" categorization will not work, so some mechanism is needed to slice the market.
At 1900x1200, the resolution I use, techpowerup's numbers for the 7970 GE add up to 2.13 x performance of the 4890 (ie. 113% faster)
AFAICT from the links you gave, 131 W average for 4890 vs 209 W for the 7970 GE. It still means that performance/watt is less than 50% better than 3½ years ago.
Cheers
UniversalTruth
Veteran
To be accurate- slightly more than 3 years between April 02, 2009 and June 21, 2012.
But if we count the original 7970, then it would be 2.5 years.
But if we count the original 7970, then it would be 2.5 years.
Which you then should compare to the original 4870. The 4890 was a speed optimized 4870, clocking 13% higher, exactly the same ratio as 7970 GE vs 7970.
The 4870 was introduced late june 2008, the 7970 late december 2011, exactly 3½ years apart.
Cheers
Err… I got a factor of 2.76. How did you get to 2.13?
Even a factor of just 2 in 5 years would be much faster than almost any other industry.
Blazkowicz
Legend
Maybe a ZX81 was silent, or an amiga/atari when floppy drive wasn't in use, but I sure remember hard disk drives to be noisy as hell
UniversalTruth
Veteran
RV790 has more work on it done in comparison to 7970---> 7970 GHz where you had different binning only.
RV790 has more work on it done in comparison to 7970---> 7970 GHz where you had different binning only.
I know. It still had the same architecture and the same amount of shaders.
Regarding the 2.13 x performance increase. I misread one of the graphs. The speedup is 2.8x. However don't forget the 7970 is 26% bigger than the 4890 (365 mm^2 vs 289 mm^2)
Cheers
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