Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 2 / 3   >   >>
krisi
User Rank
Author
re: AMD 'clocks' FX processor at 8.429-GHz
krisi   9/15/2011 2:43:47 PM
NO RATINGS
Every CMOS circuit operates significantly faster when cooled below 77K...what happens if you take any other processor and run it at such temperature? Kris

Neo10
User Rank
Author
re: AMD 'clocks' FX processor at 8.429-GHz
Neo10   9/15/2011 6:04:52 AM
NO RATINGS
Yeah, I agree the 8.4GHz is impressive even with all that liquid N2/He cooling. It goes to demonstrate that the CPU maintained functional integrity even at those very high speeds without so much as a glitch. Very good, however the cooling requirements make it almost a demo product. If they can get it to run at half the speed with just air cooling then they got a winner on their hands.

krisi
User Rank
Author
re: AMD 'clocks' FX processor at 8.429-GHz
krisi   9/14/2011 4:17:52 PM
NO RATINGS
2.4kW is more than my whole house...and if it is 2-4x more then using this processor will cost close to a $1 an hour in energy bill alone, pretty pricey...you play 10 hours a day and in one year it will cost you $3000 ;-)...Kris

NimrodO0l1
User Rank
Author
re: AMD 'clocks' FX processor at 8.429-GHz
NimrodO0l1   9/14/2011 3:53:39 PM
NO RATINGS
Power is probably proportional to clock-rate times Voltage-squared. 1) Note they cannot put too much power in or the local heating will mess things up. 2) A point that used to be made about the super-cooled Crays: Because of the huge temperature difference and assuming a perfect Carnot engine, you need to spend at least 273C/43C (=273-230C) as much energy pumping the system as the CPU uses to keep it cool. So, a factor of 6+ times something like 95W * 4 (8MHz/2MHz) = 2400 Watts. (I skipped the V-squared part, but it might be 2-4x more) A point that used to be made about the Crays: if you look at Power/cpu cycle, it is not that, umm, cool. But, for gamers, if you want to put the maximum hurt on your enemies, every Hertz helps.

krisi
User Rank
Author
re: AMD 'clocks' FX processor at 8.429-GHz
krisi   9/14/2011 3:25:06 PM
NO RATINGS
thank you Peter, good data...I love the point about "power consumption was not measured", really?, AMD went to all these efforts of clocking 8GHz and didn't bother to measure power, hard to believe...Kris

Peter Clarke
User Rank
Author
re: AMD 'clocks' FX processor at 8.429-GHz
Peter Clarke   9/14/2011 3:04:33 PM
NO RATINGS
@elPresidents AMD came back with this: "The CPU voltage was 2.0125 [volts], the temperature was below -230C, and the power consumption was not measured." -230 deg C is below the freezing point of liquid nitrogen as I remember so it is amazing that the packaging, interconnect and low-k dielectric materials don't just shatter at some point. I guess you take the temperature down as you take the clock frequency up, and very slowly.

krisi
User Rank
Author
re: AMD 'clocks' FX processor at 8.429-GHz
krisi   9/14/2011 1:57:01 PM
NO RATINGS
Yes, multicores don't scale linearly...but calling it a hogwash is going way too far...and they run much faster than 1 MHz...Kris

t.alex
User Rank
Author
re: AMD 'clocks' FX processor at 8.429-GHz
t.alex   9/14/2011 1:12:51 PM
NO RATINGS
How are they cooling down the system?

stixoffire
User Rank
Author
re: AMD 'clocks' FX processor at 8.429-GHz
stixoffire   9/14/2011 11:19:40 AM
NO RATINGS
I feel the need for speed! Speed does count - multicore hogwash - that came out because they had difficulty getting the accelator pedal further down. Run those 8 cores at 1 Mhz or even 100 cores at 1 Mhz - then compare that to a 3 gigaherz machine with one core and tell me about speed doesn't count. It's all horsepower.

Peter Clarke
User Rank
Author
re: AMD 'clocks' FX processor at 8.429-GHz
Peter Clarke   9/14/2011 8:32:30 AM
NO RATINGS
@elPresidente Yes it would. That is exactly the sort of information AMD doesn't give out. I will ask though.

<<   <   Page 2 / 3   >   >>


Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Most Recent Comments
David Ashton
 
resistion
 
resistion
 
Bill_Jaffa
 
David Ashton
 
David Ashton
 
Aries1470
 
realjjj
 
junko.yoshida
Like Us on Facebook
Special Video Section
Protecting sensitive electronic circuitry from voltage ...
09:45
Watch as a web server authenticates or rejects a water ...
Protecting sensitive electronic circuitry from voltage ...
Watch as a web server authenticates or rejects a water ...
Protecting sensitive electronic circuitry from voltage ...
Power can be a gating factor in success or failure of ...
Get to market faster and connect your next product to the ...
00:44
See how microQSFP is setting a new standard for tomorrow’s ...
The LTC3649 step-down regulator combines key features of a ...
Once the base layer of a design has been taped out, making ...
In this short video we show an LED light demo to ...
The LTC2380-24 is a versatile 24-bit SAR ADC that combines ...
In this short video we show an LED light demo to ...
02:46
Wireless Power enables applications where it is difficult ...
07:41
LEDs are being used in current luxury model automotive ...
With design sizes expected to increase by 5X through 2020, ...
01:48
Linear Technology’s LT8330 and LT8331, two Low Quiescent ...
The quality and reliability of Mill-Max's two-piece ...
LED lighting is an important feature in today’s and future ...
05:27