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Maximum Speed | AMD FX Sets a Guinness World Record

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September 14, 2011 12:22:33 AM

Quote:
AMD said Tuesday that the company's FX processors had been overclocked to an astounding 8.429 GHz.

AMD said in a blog post that the eight FX processors had been overclocked at speeds up to 8.429 GHz, beating the prior record of 8.309 GHz, using a third-party team of overclocking enthusiasts.

More importantly to the average consumer user, however, AMD found that the company's FX chips could reach over 5 GHz using normal air cooling or water-cooling rigs that cost less than $100.

"Based on our overclocking tests, the AMD FX CPU is a clock eating monster, temporarily able to withstand extreme conditions to achieve amazing speed," Simon Solotko, a senior manager with AMD, wrote. "Even with more conservative methods, the AMD FX processors, with multiplier unlocked throughout the range, appear to scale with cold. We also achieved clock frequencies well above 5GHz using only air or sub-$100 water cooling solutions."

AMD's announcement opens the Intel Developer Forum here in San Francisco, a developer conference hosted by AMD's arch-rival and much larger competitor, Intel.

What is overclocking? Historically, overclocking was a practice begun in the early days of the 486 and Pentium where a microprocessor was pushed past its rated speeds. Microprocessors are generally "binned," where each chip is tested to determine the fastest speed at which it can operate before it starts generating electrical faults and/or incorrect results due to the heat it itself produces. Within a PC, notebook computer or phone, these chips are generally either air-cooled using a series of "fins" that distribute the chip's warmth to the outside air via a fan. A sealed network of tubes, filled with water, can also be connected to a copper-based "heat sink," which thermally conducts heat away from the CPU.

Overclocking a chip can void its warranty, however, meaning that it's generally a risky practice even for enthusiasts. An overclocked chip that fails can essentially be destroyed, as can the motherboard or chipset components.

Extreme overclocking uses liquid helium and nitrogen to cool the chips; liquid nitrogen can push the chip's temperature down to less than 180 degrees centigrade. The risk here is a "cold bug," which can also prevent the chip from working. Fortunately for AMD, the team of overclockers found no such bug.

AMD's FX chips represent its enthusiast line of high-end chips, which are "unlocked," allowing users to set its operating voltage and clock speed multiplier in order to overclock the chips.


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How about that Intel? Your limitless budget can only get you that far, AMD for the win. :pt1cable:  Discuss.

With all of the rumors of AMD FX series being not able to raech Intel for raw power, this article just got me all pumped up for the release of the Bulldozer.
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September 14, 2011 1:35:15 AM

it's good news
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September 14, 2011 1:48:14 AM

Clock speed != everything.

While they didn't say so exactly, I'm assuming this is using a BD chip? (only 8 core CPU that I know of from AMD.) It is good to see that the rumored clock speed issues might not be as correct as we've heard. I bet they had to use much higher voltages then normal users however, which is probably the issue. If you want to stay inside of 95W or 125W, how fast can these chips hit then?
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September 14, 2011 4:50:06 AM

^2.06v from what I saw on the CPUz.

Still LN2 never proves to be much. Deneb hit 7GHz on LN2. But most got 4GHz on air.

And you are right as well. Clock speed means nothing these days. Thats why a Phenom II on a per core level is equal to about a Core 2 Quad.
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September 14, 2011 5:50:28 AM

On 2 cores.

If it can do an everyday oc of 4.5 on air and provide some real world benchmarks then we have something to discuss.
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September 14, 2011 6:05:04 AM

Chill for a few weeks and you can all read the benches and be happy.
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September 14, 2011 6:13:31 AM

jimmysmitty said:
^2.06v from what I saw on the CPUz.

Still LN2 never proves to be much. Deneb hit 7GHz on LN2. But most got 4GHz on air.

And you are right as well. Clock speed means nothing these days. Thats why a Phenom II on a per core level is equal to about a Core 2 Quad.


2.06 volts is really high for a 32 nm CPU. I suspect the CPU was idling. And I wonder how many CPU's they went through to cherry pick the winner.

Still, impressive.

Now, if real world performance matches the OC performance, ...
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September 14, 2011 6:27:57 AM

i cant believe they can give us this 8ghz crap but cant post a proper flipping benchmark!!!!!!!!!!!!!!!!!!!!!!!!!
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September 14, 2011 7:05:22 AM

At least we know the arch CAN get that high. Doubt it will get close to that with normal voltages and air cooling, but we know where it currently tops out at.
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September 14, 2011 8:05:28 PM

4745454b said:
At least we know the arch CAN get that high. Doubt it will get close to that with normal voltages and air cooling, but we know where it currently tops out at.


They achieved this disabling 6 out the 8 cores. How is this any indication on what the chip will do for real world and real people? This is purely marketing fluff cause you know how uneducated people like bigger numbers. Kinda like how AMD had people believing that because they have 6 cores, its superior.
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