Another hardware post: Dell Laptop Model Numbers

Previous Models[edit]

xx90 Models (2018)[edit]

• 7490: 14.0" Ultraportable (7th gen Core i3, 8th gen Core i5/i7)
• 7390: 13.3" Ultraportable (7th gen Core i3/i5, 8th gen Core i5/i7)
• 7390 2-in-1: 13.3" Ultraportable 2-in-1 (8th gen Core i3, 8th gen Core i5/i7)
• 7290: 12.5" Ultraportable (7th gen Core i3/i5, 8th gen Core i5/i7)
• 5591: 15.6" High-Performance (8th gen Core i5/i7)
• 5590: 15.6" Mainstream (7th gen Core i3/i5, 8th gen Core i5/i7)
• 5491: 14.0" High-Performance (8th gen Core i5/i7)
• 5490: 14.0" Mainstream (7th gen Core i3/i5, 8th gen Core i5/i7)
• 5495: 14.0" Mainstream (AMD Ryzen Pro Mobile: 3 2300U, 5 2500U, 7 2700U)
• 5290: 12.5" Mainstream (8th gen Core i5/i7)
• 5290 2-in-1: 12.5" Mainstream 2-in-1 (7th gen Core i3/i5, 8th gen Core i5/i7)
• 3590: 15.6" Essential (7th gen Celeron/Core i3/i5, 8th gen Core i5/i7)
• 3490: 14.0" Essential (7th gen Celeron/Core i3/i5, 8th gen Core i5/i7)
• 3390 2-in-1: 13.3" Essential 2-in-1 (7th gen Pentium/Core i3, 8th gen Core i5)

xx80 Models (2017)[edit]

• 7480: 14.0" Ultraportable (7th gen Core i3/i5/i7)
• 7389: 13.3" 2-in-1 Ultraportable (7th gen core i3/i5/i7)
• 7380: 13.3" Ultraportable (7th gen Core i3/i5/i7)
• 7285: 12.5" 2-in-1 Ultraportable (7th gen Core i3/i5/i7)
• 7280: 12.5" Ultraportable (7th gen Core i3/i5/i7)
• 5580: 15.6" Mainstream (7th gen Core i5/i7)
• 5480: 14.0" Mainstream (7th gen Core i5/i7)
• 5289: 12.5" Convertible Ultraportable 2-in-1, non-detachable keyboard (7th gen Core i3/i5/i7)
• 5285: 12.5" Convertible Ultraportable 2-in-1, detachable keyboard (7th gen Core i3/i5/i7)
• 5280: 12.5" Mainstream (7th gen Core i5/i7)
• 3580: 15.6" Essential (7th gen Celeron/Core i3/i5/i7)
• 3480: 14.0" Essential (7th gen Celeron/Core i3/i5/i7)
• 3380: 13.3" Essential (7th gen Celeron/Core i3/i5/i7)
• 3189: 11.6" Education Convertible 2-in-1 (Pentium N4200 Intel 7265, Celeron N3350)
• 3180: 11.6" Education (Celeron N3350)

Exx70 Models (2016)[edit]

• E7470: 14.0" Ultraportable (6th gen Core i3/i5/i7)
• E7270: 12.5" Ultraportable (6th gen Core i3/i5/i7)
• 7370: 13.3" Ultraportable (6th gen Core m3/m5/m7)
• 7275: 12.5" Ultraportable 2-in-1 (6th gen Core m3/m5/m7)
• E5570: 15.6" Mainstream (6th gen Core i5/i7)
• E5470: 14.0" Mainstream (6th gen Core i5/i7)
• E5270: 12.5" Mainstream (6th gen Core i5/i7)
• 5175/9: 10.8" Ultraportable 2-in-1 (6th gen Core m5/m7)
• 3570: 15.6" Essential (6th gen Celeron/Core i3/i5/i7)
• 3470: 14.0" Essential (6th gen Celeron/Core i3/i5/i7)
• 3380: 13.3" Essential (6th gen Core i3)
• 3379: 13.3" Essential 2-in-1 (7th gen Core i3/i5)

Exx50 Models (2015)[edit]

• E7450: 14.0" Ultraportable (5th gen Core i3/i5/i7)
• Latitude 13 7350: 13.3" Convertible Ultraportable 2-in-1 Tablet (5th gen Core M)
• E7250: 12.5" Ultraportable (5th gen Core i3/i5/i7)
• E5550: 15.6" Mainstream (5th gen Core i3/i5/i7)
• E5450: 14.0" Mainstream (5th gen Core i3/i5/i7)
• E5250: 12.5" Mainstream (5th gen Celeron/Core i3/i5/i7)
• E3550: 15.6" Essential (5th gen Celeron/Core i3/i5/i7)
• E3450: 14.0" Essential (5th gen Celeron/Core i3/i5/i7)

Exx40 Models (2013/2014)[edit]

• E7440: 14.0" Ultraportable (4th gen Core i3/i5/i7 ULV)
• E7240: 12.5" Ultraportable (4th gen Core i3/i5/i7 ULV)
• E6540: 15.6" Mainstream (4th gen Core i3/i5/i7 Mobile)
• E6440: 14.0" Mainstream (4th gen Core i3/i5/i7 Mobile)
• E5540: 15.6" Mainstream (4th gen Core i3/i5/i7 ULV)
• E5440: 14.0" Mainstream (4th gen Core i3/i5/i7 ULV)
• E3540: 15.6" Essential (4th gen Core i3/i5/i7 ULV)
• E3440: 14.0" Essential (4th gen Core i3/i5/i7 ULV)

Exx30 Models (2012/2013)[edit]

• E6530: 15.6" Mainstream (3rd gen Core i3/i5/i7)
• E6430: 14.0" Mainstream (3rd gen Core i3/i5/i7) (Ivy bridge processor)
• E6330: 13.3" Mainstream (3rd gen Core i3/i5/i7)
• E6230: 12.5" Mainstream (3rd gen Core i3/i5/i7)
• E5530: 15.6" Essential (3rd gen Core i3/i5/i7)
• E5430: 14.0" Essential (2nd gen core i3) or (3rd gen Core i3/i5/i7 year 2014)
• 6430u: 14.0" Ultraportable (3rd gen Core i3/i5/i7) [no standard docking, only over WiGi docking station D5000 and integrated dell wifi card ]

Exx20 Models (2011/2012)[edit]

• E6520: 15.6" Mainstream (2nd gen Core i3/i5/i7)
• E6420: 14.0" Mainstream (2nd gen Core i3/i5/i7)
• E6320: 13.3" Ultraportable (2nd gen Core i3/i5/i7)
• E6220: 12.5" Ultraportable (2nd gen Core i3/i5/i7)
• E5520: 15.6" Essential (2nd gen Core i3/i5/i7)
• E5420: 14.0" Essential (2nd gen Core i3/i5/i7)
• E5520m: 15.6" Value (Celeron/Core2Duo)
• E5420m: 14.0" Value (Celeron/Core2Duo)
• E6420 XFR: 14.0" Fully Rugged (2nd gen Core i5/i7)
• E6420 ATG: 14.0" Semi-Rugged (2nd gen Core i5/i7)

Exx10 Models (2010/2011)[edit]

• E6510: 15.6" Mainstream (1st gen Core i3/i5/i7)
• E6410: 14.1" Mainstream (1st gen Core i3/i5/i7)
• E6410 ATG: 14.1" Semi-Rugged (1st gen Core i5/i7)
• E5510: 15.6" Essential (1st gen Core i3/i5/i7)
• E5410: 14.1" Essential (1st gen Core i3/i5/i7)
• E4310: 13.3" Ultraportable (1st gen Core i3/i5/i7)

Exx00 Models (2008/2009)[edit]

• E6500: 15.4" Mainstream (Core2Duo)
• E6400: 14.1" Mainstream (Core2Duo)
• E6400 ATG: 14.1" Semi-Rugged (Core2Duo)
• E6400 XFR: 14.1" Fully Rugged (Core2Duo)
• E5500: 15.4" Essential (Celeron/Core2Duo)
• E5400: 14.1" Essential (Core2Duo)
• E4300: 13.3" Ultraportable (Core2Duo)
• E4200: 12.1" Ultraportable (Core2Duo)

Other Models[edit]

• XT3: 13.1" Convertible Touch Tablet & Pen (Core i3/i5/i7) –Release Date: August 2011
• XT2: 12.1" Convertible Touch Tablet & Pen (Core2Duo ULV)
• XT2 XFR: 12.1" Convertible Touch Tablet & Pen –Fully Rugged (Core2Duo ULV)
• 2100 10.1" Netbook
• 2110 10.1" Netbook
• 2120 10.1" Netbook
• Z 16.0" Thin and Light

Reviewing Optical Lithography since 1995

I was re-reading an article from 1995 that warned of the 180 nm limit in CPU manufacturing.  Reviewing where the technology went since then, I found this Wikpedia excerpt encapsulated it as much as anything:

Optical lithography has been extended to feature sizes below 50 nm using the 193 nm ArF excimer laser and liquid immersion techniques. Also termed immersion lithography, this enables the use of optics with numerical apertures exceeding 1.0. The liquid used is typically ultra-pure, deionised water, which provides for a refractive index above that of the usual air gap between the lens and the wafer surface. The water is continually circulated to eliminate thermally-induced distortions. Water will only allow NA's of up to ~1.4, but materials with higher refractive indices will allow the effective NA to be increased further.
Experimental tools using the 157 nm wavelength from the F2 excimer laser in a manner similar to current exposure systems have been built. These were once targeted to succeed 193 nm lithography at the 65 nm feature size node but have now all but been eliminated by the introduction of immersion lithography. This was due to persistent technical problems with the 157 nm technology and economic considerations that provided strong incentives for the continued use of 193 nm excimer laser lithography technology. High-index immersion lithography is the newest extension of 193 nm lithography to be considered. In 2006, features less than 30 nm were demonstrated by IBM using this technique

-http://en.wikipedia.org/wiki/Photolithography