The Pentium 4 duo is certainly a 64-bit chip, but it runs on the Itanium instruction set instead of the x86_64 one. It is codenamed "Nehalem" and was originally planned out around 2000. Intel supposedly canceled the project and gave the Nehalem name to a new project, but we were carrying out the project in the back of D1D behind the stacks of old RDRAM and defunct 820 chipsets. The Pentium 4 duo is a dual-core chip running at 10.0 GHz just like we said it would when we introduced the original Pentium 4 Williamette back in late 2000. We've got Gordon Moore, bitch, we're NEVER wrong! The chip runs on the Itanium ISA as AMD64 wasn't due to be introduced until 2003 and the Pentium 4 duo was started in 2000. IThe higher-ups declined to market the Pentium 4 duo as they were fearing an lawsuit from AMD for anticompetitive tactics, instead keeping the Pentium 4 duo under wraps and using it to secretly power the machines that supposedly contained Core 2 CPUs during the early part of 2006. That is why Intel never let anybody look at the insides of the machines as the Pentium 4 duo is based on Socket 423 and not LGA 775. The reason that Socket 423 was withdrawn was not due to electrical problems after all, but due to the fact that the Socket 423 was being used for the Pentium 4 duo. We didn't accidentally want some noob on his first day to mistake a P4d for a regular P4 on the first day and have DailyNDABreak get a hold of it, so they switched production CPUs to 478 pins. We also added shiny silver IHSes to the Socket 478 and LGA 775 chips so that if the engineer graduated from UM-Rolla or KU and can't count the pins, the mantra "if it doesn't shine, it doesn't ship" kept the unlidded P4ds safely in the back of D1D. In fact, Intel made that rule in all of its fabs except for the one with the Israeli wankers in it making laptop CPUs who keep thinking that the bloody old Pentium III can be tweaked and sold as a new chip or three. They had nothing to do with the P4d and thus didn't have to put IHSes on their chips.
The actual technical specs of the Pentium 4 duo are as follows:
* 2 cores but expandable to 4 or more.
* Quad-channel RAMBUS XDR memory controller, on-die. This used to be quad-channel RDRAM but the XDR stuff is faster. Makes the pile of old RDRAM sticks useless, though.
* Socket 423 with a solid copper Vcc contact in the center pinless region below the CPU and a grounding strap for providing ground. All pins are data pins. Pretty nifty, eh?
* 10 GHz operating frequency just like we predicted in 2000.
* 500 MHz system clock and 20x multiplier. SpeedStep is enabled.
* Uses an unreleased Intel 890 chipset with support for AGP x32, 133 MHz, 128-bit PCI slots, and PATA/533.
* 65 nm process node. You guys seriously thought that the 90 nm Pentium 4s could only do a mere 400 MHz better than the Northwood? And that 3.73 GHz was as fast as the Preslers could go? That's what we wanted you to think and kept the good silicon for the P4d in case the Athlon 64 actually did get over 4 GHz and give the released Pentium 4s and Core 2 Duo some trouble.
* Half-cycle SSE engine capable of executing two 128-bit SSE instructions per clock.
* 67 W thermal envelope for the 10 GHz version, the 8.0 GHz LV version only consumes 35 W.
* 32 KB L1, 120 kUops trace cache, 8 MB L2, 16 MB L3 cache. The chip is about 300 mm^2, which is a little big, but not too bad. That Z-RAM stuff sure does help shrink stuff.
* HyperHyperHyperThreading, which allows each CPU core to be seen as eight logical CPUs. Because we just couldn't let Sun one-up us with HT and let each core be seen as 4 logical ones.
So that's the Pentium 4 duo...say, where'd you get one? Did those fools over in Shipping confuse them with a Celeron again? I swear, can't trust somebody that says they graduated from a school called "Missouri State" as there is no school with such a name. Maybe they were sniffing the dopants again like I caught them doing last week...Hoosiers.
Facebook
Twitter
Instagram