IBM Ships Fastest CPU on Earth

HockeyPuck writes "The 5-billion-instructions-per second Power6 processor from IBM would beat such rivals as the 3.73 gigahertz Pentium Extreme and the 2.4 gigahertz UltraSparc T2 from Sun. 'It's hard to make the average person understand just how fast this is,' said IBM Chief Technology Officer Bernard Meyerson, offering an example meant to explain his company's baby that still leaves the listener awed with the speediness of the two laggards. 'Hold your index finger out in front of your face,' Meyerson said in a telephone interview from IBM headquarters in New York. 'In less time than it would take a beam of light to travel from your knuckle to your fingertip, the new IBM chip would complete one task and start looking for the next, he said.'"

Comments

Re:It's the uses, stupid!

[gEvil (beta)]

Nice chip. Now what OS and applications run on it?

I'd guess anything that runs on the Power archicture. Here's a list of the various OSs that have been supported on various iterations of the Power architecture at one time or another.

Re:Sour grapes or a real arguement

[Albanach]

It's horses for courses. If you're serving web pages and running database queries from a well tuned database, the Sun Niagara chips are fast and very well suited. They serve the pages a little slower, but can serve many more at a time.

If, on the other hand what you're doing is not easily threaded then IBM probably have the upper hand. Say you're doing some mathematical analysis, where you have to do everything in sequence. IBM's faster processor can complete each stage quicker, moving on to the next part and delivering the result faster than a chip with more threads but slower speed.

Power6 architecture: it's different

[frankie]

Power6 is a big change from Power4 & Power5 series. The key factor is: it gains clock and SMT at the expense of OoOE. In-order execution means its performance is deeply dependent on perfectly tuned compilers.

Other than the lack of out-of-order, on paper it looks pretty strong. Dual core, lots of bandwidth, up to 7 IPC (5 in one thread, 2 in the other), big GHz, voltage & frequency slewing, and yes it has AltiVec.

p.s. No, it would not be good for Macs. POWER chips are all made for big iron.

Re:Sour grapes or a real arguement

[Hal_Porter]

Actually the whole article is utter bollocks. They talk about 5 billion instructions per second. But

http://en.wikipedia.org/wiki/POWER6

Each core has two integer units, two binary floating-point units, and a decimal floating-point unit, and is capable of two way SMT. The binary floating-point unit incorporates âoemany microarchitectures, logic, circuit, latch and integration techniques to achieve [a] 6-cycle, 13-FO4 pipeline,â according to a company paper.[6] Unlike the servers from IBM's competitors, the POWER6 has hardware support for decimal arithmetic and will include the first decimal floating-point unit integrated in silicon. More than 50 new floating point instructions handle the decimal math and conversions between binary and decimal.[7] This is a feature being added to the processors powering IBM's System z.[8] So it has a 5Ghz clock rate but can actually manage a bit more than 5 Bips peak. But

A notable difference from POWER5 is that IBM moved from an out-of-order design to an in-order design, a drastic change which should require software recompilation for top performance. However, the processor still achieves significant performance improvements even with unmodified software, according to the lead engineer on the POWER6 project.[2] Hmmph. I'd bet it's got a really long pipeline to reach that clock speed.

The POWER6 has approximately 790 million transistors and 341 mm large fabricated on an 65 nm process. It was released on the 8th June 2007, at speeds of 3.5 GHz, 4.2 GHz and 4.7 GHz[2], but the company has noted prototypes have reached 6 GHz.[3] POWER6 reached first silicon in the middle of 2005[4]. Wow it's huge, almost twice the size of a Core 2 Duo.

I think IBM is doing taking the NetBurst approach - a long pipeline to get to high frequencies. Plus it's a server chip only used in their servers so they can design for a much higher TDP than Intel or AMD and rely on water cooling.

I think this guy is spot on
http://aceshardware.freeforums.org/praising-the-power-6-design-t426.html

Later this year Intel will release the 65 nm bulk CMOS Tukwila and
it will likely easily outperform the 65 nm SOI CMOS Power6 on the
benchmarks of most interest to buyers of business critical servers
despite running at less than half its clock frequency and having
less than half its socket level bandwidth. IBM might have created
a better product and closer competitor to Tukwila better if Power6
had been a quad design based on a Power5 core worked over to
improve performance/power but then its wouldn't have the mega-
giga for headlines in the WSJ and given IBM Micro a measure of
bragging rights to help justify its continued existence. ;-)