РЕКЛАМА
ИНФОРМАЦИЯ
ПОЛЕЗНЫЕ ССЫЛКИ
Socket A Is Coming: Test of 10 Boards

VIA's New South Bridge: VT82C686B Supporting UltraATA/100

Tuning Extreme: Overclocking with the Asus A7V

Modifying An Asus A7V Motherboard For Duron-Overclocking

VIA Tech Forum 2000

AMD Extends Performance Lead With New Athlon and Duron Processor

AMD's Latest Thunderbird - SocketA Athlon at 1.1 GHz

The Celeron Killer - AMD's New Duron Processor

Overclocking AMD's Socket Processors

Rambler's Top100 Рейтинг@Mail.ru

МАТПЛАТЫ

5 New SocketA Boards With UltraATA/100
Краткое содержание статьи: VIA's KT133 chipset has been joined by the 686B-Southbridge. Finally, the first boards from AOpen, Biostar, Luckystar, MSI, and Soltek offer the long-expected UltraATA/100 feature for hard disks. But is it really a big push in terms of performance?

5 New SocketA Boards With UltraATA/100


Редакция THG,  20 декабря 2000
Назад
Вы читаете страницу 3 из 19
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Далее


The Disk Data Tranfers Rates Of 686A and 686B

We checked the maximum data transfer rate with an ATA/100-hard disk connected to the 686A and 686B. We compared each VIA-chipset with its counterpart from Intel. The following results represent the data transfer rate when reading data from the hard disk's cache memory modules, not the actual physical disks.

Peak Data Transfer Rate Of Current Southbridges

We already expected that, due to the overhead, the transfer protocol would not reach the theoretically possible 66 and 100 MByte/s. ATA66 reaches 55-57 MB/s, so the overhead-loss is about 13 - 15%. The results of ATA100 are slightly worse. With 15 and 17 % respectively overhead compared to the theoretical maximum, the effectiveness is very similar ATA/66.

Benchmark Expectations

What do these results mean in practical life? First we have to know the influence of basic hard drive performance numbers on overall system performance. These are the sustained transfer rates and access times. The sustained transfer rate is the maximum transfer rate of data coming from the actual platters (disks), which is also known as disk-to-interface speed. This should not be mixed up with the much higher maximum transfer rate of data coming from the cache chips (cache-to-interface speed), which is obviously the preferred number quoted by marketing departments of hard disk manufacturers. In real life the hard drive cache can only show its strength in certain applications.

Modern hard disks offer a sustained data transfer rate of 35 MByte/s and more. Therefore, the UltraATA/66 should have some reserves left. We expect marginal performance increases in business applications when using ATA100 with the 686B, as reported by Sysmark 2000. We do not expect any improvement with games and OpenGL benchmarks because hard rive performance doesn't have any impact on frame rates.
Назад
Вы читаете страницу 3 из 19
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Далее


СОДЕРЖАНИЕ

Обсуждение в Клубе Экспертов THG Обсуждение в Клубе Экспертов THG


РЕКЛАМА
РЕКОМЕНДУЕМ ПРОЧЕСТЬ!

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.

ССЫЛКИ
Реклама от YouDo
Задача 'http://photo.youdo.com/st205973/' на YouDo.