Toshiba Satellite L305D-S5934 Notebook Computer Teardown

Overview / Main Features

The Toshiba Satellite L305D-S5934 under analysis here is a 15.4 inch laptop computer powered by an AMD Turion X2 dual-core processor with an accompanying AMD chipset featuring Radeon 3100 graphics controller. It comes configured with 3GB of RAM, 250GB hard disk drive and 8x DVD+/-RW optical drive. The Toshiba Satellite laptop also features an integrated webcam, ExpressCard 54 slot, and on board media card reader.

Toshiba Satellite L305D-S5934 Notebook Computer Main Image

Value Laptop PC

Released

Q3 2008

Toshiba Satellite L305D-S5934 Notebook Computer - Motherboard Top

Pricing - Based on the configuration of the device under analysis, the Toshiba Satellite L305D-S5934 retails for approximately $620 at the time of writing (Sept 2009).

Availability - Global (assumed)

Volume Estimations

For the purposes of this teardown analysis, we have assumed a lifetime production volume of 1 million units.

As a reminder, teardown volume production assumptions are primarily used for our cost analysis in terms of amortized NRE and tooling costs, especially for custom components specific to the model being analyzed (mechanical components especially). Unless assumed, volumes increment by an order of magnitude. Minor changes in volume (say 1 million vs. 2) rarely have a large net effect on our final analysis.

Toshiba Satellite L305D-S5934 Notebook Computer - Motherboard Bottom

Major Cost Drivers (Representing ~87% of total materials costs)

AMD - TMRM70DAM22GK - CPU - AMD Turion X2 Dual-Core RM-70, 2.0GHz, 1MB L2 Cache, 1800MHz Bus, 65nm Process

Samsung - LTN154AT07 - Display Value Line Item - 15.4' Diagonal TFT LCD, WXGA, 1280 x 800 Pixels (16:10), 0.259mm x 0.259mm Pixel Size, 262K Colors, 300:1 Contrast Ratio, 220cd/m^2 Brightness, 8ms Response Time, Active Area: 331.2mm x 207.0mm

Toshiba Storage Device - MK2555GSX - Hard Drive - 250GB, 2.5', SATA 3.0Gb/s, 5400RPM, 8MB Buffer

Samsung Semiconductor - M470T5663QZ3-CF7 - SO-DIMM DDR2-800 - 2GB, 256Mx64, 1.8V

Panasonic - UJ-880E - CD/DVD RW Drive - Slim Internal Type, Tray Load, SATA, 8X DVD±R, 6X DVD±R Dual Layer, 24X CD±R

PA3534U-1BRS - Battery - Li-Ion, 10.8V, 4000mAh

Hynix - HYMP112S64CP6-S6 - SO-DIMM DDR2-800 - 1GB, 128Mx64, 1.8V

AMD - 216-0674024 - Northbridge - Radeon 3100 Graphics Controller

Gold Circuit Electronics - 8-Layer - FR4

Lite-On - AC Adapter - 19V, 4.74A

Atheros - AR5BXB63 - WLAN Mini PCIe Module Value Line Item - 802.11b/g

AMD - 218S7EBLA12FG - Southbridge - I/O Controller Hub

Keyboard Assembly - Injection Molded Plastic Keys, Mounted on Stamped Metal Backing Plate, w/ Interconnect Flex

Enclosure, Main, Bottom - Injection Molded Flame Retardant ABS Polycarbonate, Painted, w/ ESD/EMI Coating & 17 Brass Inserts

Webcam PCB - Contains 1.3MP Camera Module, Sonix Camera Controller & Supporting Elements

Enclosure, Display, Top - Injection Molded ABS Polycarbonate, Clear Coated, Painted, Printed, w/ 8 Brass Inserts

Cooler Assembly - Stamped Copper Plate, Copper Tube & Aluminum Fins w/ Mounting Bracket

Enclosure, Main, Top - Injection Molded ABS Polycarbonate, Clear Coated, Printed, w/ 23 Brass Inserts

Total BOM Cost $476.25

Toshiba Satellite L305D-S5934 Notebook Computer Cost Analysis

What Is Not Included in our Cost Analysis

The total materials and manufacturing costs reported in this analysis reflect ONLY the direct materials cost (from component vendors and assorted EMS providers), AND manufacturing with basic test. Not included in this analysis are costs above and beyond the material manufacture of the core device itself - cost of intellectual property, royalties and licensing fees (those not already included into the per component price), software, software loading and test, shipping, logistics marketing and other channel costs including not only EMS provider and the OEM's margin, but that of other resellers. Our cost analysis is meant to focus on those costs incurred in the manufacture of the core device and exceptionally in some circumstances the packaging and literature as well.

Toshiba Satellite L305D-S5934 Notebook Computer - Enclosure Disassembly

OEM/ODM/EMS Relationships / Manufacturing

Toshiba's mobile PC manufacturing profile reflects a majority outsourced operational model. Approximately 79% of their product volume is sourced from EMS partners in Asia. Toshiba maintains manufacturing capacity domestically in Japan as well as facility in China. According to iSuppli's "Global OEM Manufacturing and Design Analysis - Compute Platforms, Toshiba's major contract manufacturers in 2008 are Compal, Inventec, Quanta and Pegatron (formerly Asustek) respectively.

Country of Origin / Volume Assumptions

Based on markings, the unit was assembled in China. Furthermore, we have assumed that custom mechanicals (plastics, metals, etc.) were also sourced in China.

Country of origin assumptions relate directly to the associated cost of manufacturing, where calculated by iSuppli. In the cases of 'finished' sub-assemblies (such as LCD display), we do not calculate internal manufacturing costs, but rather assess the market price of the finished product in which case country of origin assumptions may or may not have a direct effect on pricing.

Remember also that labor rates are applied directly only to hand inserted components and systems in our bill of materials, and although regional assumptions do, these new rates do not have a direct effect on our modeled calculations of placement costs for automated SMD assembly lines. ""Auto" inserted components (such as SMT components) placement costs are calculated by an iSuppli algorithm which allocates a cost per component based on the size and pincount of the device. This calculation is affected by country or region of origin as well.

Design for Manufacturing / Device Complexity

Invariably, laptop computers represent some of the more complex and electronically dense devices. Manufacturing costs for more densely configured devices in inevitably higher than such products as desktops where assembly is facilitated and costs reduced by not having to resort to more sophisticated, costly and complex systems for such things as interconnect (flex cable, PCBs, etc.). Furthermore, higher density PCBs cost inherently more, as typically this affects board layer counts, via structures and complexity, etc.

With that said, the overall component count on the Toshiba Satellite L305D-S5934 came out to 1590 (excluding box contents), of which, 267 are mechanical in nature.

Component counts have a direct bearing on the overall manufacturing cycle times and costs, and also can increase or decrease overall yields and re-work. Our calculations of manufacturing costs factor counts and more qualitative complexities in the design. The cost of manufacturing is also, to some extent, decreased in this case because of assumed labor rate applied for China.

Note that manual labor has a much smaller effect on auto-insertion assembly lines (for the Main PCB, for example), where manufacturing costs are much more capital equipment intensive and driven by these investment costs.

Design Notes

Here is a summary of the major components used in the Toshiba Satellite L305D-S5934 laptop design:

Motherboard

CPU

• AMD - TMRM70DAM22GK - AMD Turion X2 Dual-Core RM-70, 2.0GHz, 1MB L2 Cache, 1800MHz Bus, 65nm Process

Northbridge

• AMD - 216-0674024 - Radeon 3100 Graphics Controller

Southbridge

• AMD - 218S7EBLA12FG - I/O Controller Hub

Memory

• SO-DIMM DDR2-800 - Samsung - M470T5663QZ3-CF7 (2GB, 256Mx64, 1.8V)
• SO-DIMM DDR2-800 - Hynix - HYMP112S64CP6-S6 (1GB, 128Mx64, 1.8V)

I/O & Interface

• Embedded Controller - Nuvoton - WPCE775LA
• Ethernet Controller - Realtek - RTL8102E
• Codec - Realtek - ALC268-GR
• Flash Memory Card Reader/Controller - Realtek - RTS5158

Clock

• Clock Generator - IDT - ICS9LPRS489CGLF

Display

• LCD Panel - Samsung - LTN154AT07 (15.4' Diagonal TFT LCD, WXGA, 1280 x 800 Pixels, 16:10 format)

Storage

• Hard Drive - Toshiba Storage Device - MK2555GSX (250GB, 2.5', SATA 3.0Gb/s, 5400RPM, 8MB Buffer)
• CD/DVD RW Drive - Panasonic - UJ-880E

Toshiba Satellite L305D-S5934 Notebook Computer - Box Contents