AMD_FX_CPU_LogoNormally I do not think that a CPU running at a massive clock speed is very news worthy. This is even more true when the speed in question cannot do much more than verify “yes this was my clock speed”. However, when the same model and style of CPU breaks a world record twice in around two months… well that is something a little different. I decided to take a look and see what was going on.

It seems that back in September an overclocker by the name of Macci (aka AMD_FX-FX_chew*_macci_hardman_64NOMIS_AJS) posted a verified CPUz for the AMD FX-8150 Octo-core CPU of 8.429.38 MHz (8.429GHz). This speed was achieved by using a staggering 2.016 volts on an Asus Crosshair V Formula. This is not a bad clock at all, but we did notice something very interesting.

macci
If you look at the screen shot above you notice that despite being listed as an “AMD FX-8150 Eight-Core Processor” CPUz only lists two cores and two threads. This would seem to indicate that to reach this speed Macci had to shut off three other cores (there are two “cores” per “core) bringing it down to just the two single cores inside one CPU module on the processor die. Now, before you fire off that nasty email of start warming up the flame thrower, I want to be clear on something; this speed is extremely impressive. No matter how thin you slice it, but it does bring up something though. On the Phenom the crossbar that talked between CPU cores would often fail to respond in a timely manner between all cores. This would cause a BSOD and mean that that high clock speed you were going for was out of the question.  (Before anyone says anything, I know this happens on Intel CPUs as well it is just not as common).
andrew
Last week another overclocker by the name of Andre Yang pushed the FX-8150 (Dual Core) CPU past the 8.42 mark to 8.46GHz. This time the high Clock speed was reached with a voltage of only 1.992 Volts, but still using the same motherboard.  These two clock speed are very impressive in terms of simply going for that top spot, but what is missing right now is the performance side of overclocking. Where are the low SuperPi Scores, the high PCMark Scores, and PiFast numbers?  

While I would never take away from the accomplishments of these two overclockers, I will say to AMD that overclocking is not only about the clockspeed. You have to have performance to match these numbers, and from what we are seeing… it just isn’t there yet.

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-- GIGABYTE Announces Winners of Pentium G6950 OC Challenge on HWBOT --
-- over@locker886 Takes Top Score for all 4 Benchmarks --

TAIPEI, Taiwan – July 09, 2010 – GIGABYTE TECHNOLOGY Co., Ltd, a leading manufacturer of motherboards, graphics cards and other computing hardware solutions today proudly announced that over@locker886 from Hungary was the winner of the Pentium G6950 OC Challenge hosted by HWBOT, scoring a total of 40 points by reaching the top spot in 4 different benchmark categories using a GIGABYTE GA-P55A-UD7 motherboard.