Preview of Intel's Upcoming 'Camino'-Chipset

Whitney, Intel’s 810 Chipset - Part I

Whitney, Intel 810 Chipset - Part II

440BX Motherboard Review - Summer 1999

Preview of VIA's upcoming Apollo Pro+ 133 Chipset

Rambus on Alternate Platforms

Performance Impact of Rambus

AGP and Graphics Memory

Does AGP Really Improve Performance?

AGP - A New Interface for Graphic Accelerators

The Graphic Accelerator Guide - AGP or PCI?

Rambler's Top100 Рейтинг@Mail.ru


Intel i820 Chipset Review
Краткое содержание статьи: The i820 chipset supports 133MHz Front Side Bus including UDMA66 & 4x AGP. We compare an i820 board against VIA's PC-133, and 440BX.

Intel i820 Chipset Review

Редакция THG,  5 октября 1999
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'MCH' and its Buses

The 82820 chip is named MCH, which stands for 'Memory Controller HUB'. The MCH includes a couple of important buses.

The Memory Bus - 133MHz, 128 Bit = 1.6GB/s
The memory bus in combination with RDRAM is twice that of the BX chipset. However, let's not forget that the CPU can only take advantage of 33% more memory bandwidth, and this is only the case if the CPU runs at 133 MHz FSB. Also, because AGP has moved to 4X it requires increasing the memory bandwidth so it can keep up with the AGP bus. The new RDRAM or Rambus memory does have a much higher bandwidth, but it suffers from higher latencies vs. PC-100 and PC-133 SDRAMs.

The 'Interlink" between the MCH & ICH - 133 MHz, 2x, 8 bit = 266 MB/s
The MCH and ICH are able to directly communicate at 266MB/s. This is much faster than the 440BX's (133MB/s) communication between the North and South Bridge via the PCI-bus.

The AGP 4X bus - 133MHz, 128 Bit = 1064MB/s
The new AGP 4x bus provides much more bandwidth for the AGP graphics adaptor, twice as much bandwidth as the AGP 2X on the 440BX.

The 'ICH'

Right underneath the 'MCH' you can find 82801AA, the 'ICH' = 'I/O Controller Hub'. This part of the chipset talks to all the PCI-devices over the PCI bus, to the EIDE hard drives over the ATA66 interface, to external devices over the USB, to a low priced modem/audio-codec via AMR and finally to the 'FWH' = 'Firmware Hub'. The ICH is the place where all the outside communications run together, forwarded to main memory, the CPU or the AGP graphics controller over this new 266 MB/s bus. You could say that the 'ICH' replaces what used to be called 'South Bridge'.

The FWH - 82802

Behind the name 'FWH' = 'Firmware Hub' you'll find a chip that's not much else than a 4 Mbit EEPROM plus a tiny bit of active silicon. The EEPROM contains the motherboard BIOS and the active silicon is a random number generator. This random number generator, otherwise known as the 'RNG', can supposedly be used by software to provide extra security during computer related transactions (e.g. ECommerce).
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Обсуждение в Клубе Экспертов THG Обсуждение в Клубе Экспертов THG


История мейнфреймов: от Harvard Mark I до System z10 EC
Верите вы или нет, но были времена, когда компьютеры занимали целые комнаты. Сегодня вы работаете за небольшим персональным компьютером, но когда-то о таком можно было только мечтать. Предлагаем окунуться в историю и познакомиться с самыми знаковыми мейнфреймами за последние десятилетия.

Пятнадцать процессоров Intel x86, вошедших в историю
Компания Intel выпустила за годы существования немало процессоров x86, начиная с эпохи расцвета ПК, но не все из них оставили незабываемый след в истории. В нашей первой статье цикла мы рассмотрим пятнадцать наиболее любопытных и памятных процессоров Intel, от 8086 до Core 2 Duo.

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