IDF 'Penryn', Intel's upcoming die-shrink-plus Core 2 processor architecture, may have been high on the chip maker's agenda at its Developer Forum this week, but it said nothing new about the technology. Need a refresher? Here's what Register Hardware knows about the 45nm CPU...

Intel 45nm CPUs to clock above 3GHz (http://www.reghardware.co.uk/2007/03/28/intel_spills_penryn_beans/)
Upcoming Core 2 processors based on Intel's 45nm 'Penryn' architecture are due to go into production later this year...

Intel announces fourth 45nm fab (http://www.reghardware.co.uk/2007/02/27/intel_announces_45nm_fab/)
Intel is to spend $1-1.5bn upgrading its Rio Rancho, New Mexico plant, Fab 11X, to produce 45nm processors...

Intel won't launch 45nm desktop CPUs until 2008? (http://www.reghardware.co.uk/2007/02/02/intel_45nm_desktops_until_q1_08/)
Intel may claim its 45nm processors will be in production in H2, but desktop chips may not launch until Q1 2008...

Intel 45nm CPUs to use metal gates, high-k dielectric (http://www.reghardware.co.uk/2007/01/27/intel_45nm_metal_gates/)
But the chip maker was tight-lipped about which materials will actually make up these components in its 45nm dual-core die, 'Penryn'...

Intel exposes 45nm Core 2 Duo (http://www.reghardware.co.uk/2007/01/27/intel_reveals_penryn/)
Penryn's 410m transistors revealed...

Intel 65nm-to-45nm crossover coming in 2008 (http://www.reghardware.co.uk/2006/11/30/intel_45nm_crossover_coming_2008/)
Intel expects to begin shipping more 45nm processors than 65nm chips - the so-called 'crossover point' - in 2008...

Intel samples 45nm 'Penryn' (http://www.reghardware.co.uk/2006/11/28/intel_samples_penryn/)
Core 2 die-shrink to introduce SSE 4...

Intel readies SSE 4 for 2007 (http://www.reghardware.co.uk/2006/09/27/intel_x86_isa_extensions/)
Intel has said it will extend the x86 instruction set with even more Streaming SIMD Extensions, pledging to add a further 50 instructions to the ISA...