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AMD 'clocks' FX processor at 8.429-GHz

9/13/2011 01:38 PM EDT
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clematis
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re: AMD 'clocks' FX processor at 8.429-GHz
clematis   9/29/2011 2:04:12 PM
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Intel i7 2600K is routinely being overclocked by end users like you and me to 5 GHz. And its almost easy to get 4.5 GHz.

Jack.L
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re: AMD 'clocks' FX processor at 8.429-GHz
Jack.L   9/27/2011 1:04:01 PM
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GOOGLE and read people! It is a 3.6GHZ, 8 core processor, not 1 - 1.5GHZ core. Yes it was a stunt (probably by overclockers as much as AMD) and yes they did use liquid helium, but it still worked. AMD state that by air/water cooling the chip should be good for 5GHz. Multicores are one way to speed, but with added software complexity and/or plain algorithmic limitations, GHz is often king.

KB3001
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re: AMD 'clocks' FX processor at 8.429-GHz
KB3001   9/24/2011 5:31:34 PM
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Of course it's a publicity stunt. Nice to read about such feat though.

seaEE
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re: AMD 'clocks' FX processor at 8.429-GHz
seaEE   9/22/2011 4:20:42 AM
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I can just see them spraying Circuit Cooler on it. ;)

Robinho
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re: AMD 'clocks' FX processor at 8.429-GHz
Robinho   9/22/2011 4:11:48 AM
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Aren't the transistor characteristics very different at such low temperature? Don't designers have fast corners where chip works significantly faster? Sounds like a publicity stunt.

krisi
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re: AMD 'clocks' FX processor at 8.429-GHz
krisi   9/17/2011 12:07:44 AM
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thank you Frank, this is the link: http://www.youtube.com/watch?v=UKN4VMOenNM

old account Frank Eory
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re: AMD 'clocks' FX processor at 8.429-GHz
old account Frank Eory   9/16/2011 10:07:59 PM
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If you search for the video on YouTube, you can see how they did the test. It was a packaged part on an Asus motherboard -- normal chipset, DDR3, etc. In other words, a working PC. They used the BIOS overclocking menus to set the reference frequency and the CPU multiplier. The 8.429 GHz CPU clock frequency was reported by the BIOS. The LN2 cooler was basically a 6 inch tall cylinder on top of the CPU, into which a guy slowly poured LN2.

ohmpossum
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re: AMD 'clocks' FX processor at 8.429-GHz
ohmpossum   9/16/2011 8:46:58 PM
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This test was probably done on production test equipment directly on a whole (un-diced) wafer. The tester can be programmed for a 'shmoo' plot to find the best die on the best wafer. It could potentially even be a skew lot where the transistor lengths are varied for fast and slow device corners. Being AMD they own the wafer fab and control the process. This could even be from a next generation process that has not yet been qualified for production runs yet. There are a lot of knobs that can be turned. Companies that own their own wafer fabs can do this sort of thing. You won't see this on most ARM processors that are run by fabless semiconductor companies at foundries.

fdunn0
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re: AMD 'clocks' FX processor at 8.429-GHz
fdunn0   9/16/2011 12:29:59 AM
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You have got to be kidding, if AMD even thinks of releasing FX at those speeds, they may as well just shutter the product. I know they were having some issues (SURPRISE!) with the planned clock frequencies but that is supposed to be remedied in the silicon, and that is why we don't have parts yet. But don't tell me that they can overclock a 1-1.5GHz cpu to 8+GHz, just not going to happen....PERIOD!

fdunn0
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re: AMD 'clocks' FX processor at 8.429-GHz
fdunn0   9/16/2011 12:23:56 AM
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Are you brain dead or what? The CPU was OC'ed in a very careful environment but what this means is that even in Air Cooled products that the parts are going to excel.

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