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dual channel ram or dual chanel mb

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December 23, 2002 11:16:27 PM

iam quite confused here how do we get dual channel ram output by the ram or the m/b or by the new intel's chipset E7205. which is the best ram around now ?
December 24, 2002 9:20:36 PM

http://developer.intel.com/design/chipsets/e7205/
Products Chipset E7205
The Intel® E7205 chipset represents the next step in entry workstation chipset technology for the Intel® Pentium® 4 processor. The Intel E7205 chipset design provides a compelling transition to next-generation workstation-class technologies by delivering support for Hyper-Threading Technology along with maximized system bus, memory, and graphics bandwidth.
Features that Maximize Performance and Balance the Platform
Intel® Pentium® 4 processor with 512KB L2 cache and a 533 MHz system bus provides up to 4.3 GB/s of bandwidth between the processor and the chipset.
Dual DDR266 memory channels provide up to 4.3 GB/s of memory bandwidth, which exactly matches the system bus bandwidth.
The direct attach AGP 8X port provides 2.1 GB/s of graphics bandwidth directly out of the MCH.
The ICH4 provides advanced features, including Hi-Speed USB 2.0.
Supports the Intel® Pentium® 4 processor with Intel® NetBurst™ microarchitecture Supports advanced CPU features and the fastest frequencies. Increases system responsiveness.
533 MHz System Bus Delivers 4.3 GB/s of system bus bandwidth for increased responsiveness.
Dual-channel DDR266 Memory Provides 4.3 GB/s of memory bandwidth for balanced performance on the Intel Pentium 4 processor-based platform.
Memory ECC Memory error correction code for greater reliability.
APG 8X Interface Next-generation graphics interface, delivering 2.1 GB/s of graphics bandwidth directly from the MCH, for use with the most advanced AGP 8X graphics cards.
Intel Hub Architecture Dedicated data paths deliver error protection and maximum bandwidth for I/O-intensive applications.
Integrated Hi-Speed USB 2.0 Six ports offer up to 40 times greater bandwidth over the original USB 1.1 for the most demanding I/O peripherals.
Alert on LAN* 2.0 Emits an alert in case of software failures or system intrusion, even when the O/S is not present or the system is suspended.
Ultra ATA/100 Takes advantage of the latest industry innovations in HDD features and performance.
Intel Application Accelerator Software that helps accelerate boot times and application launch time.
AC’97 controller Supports Dolby* Digital 5.1 Surround Sound, delivering up to six channels of enhanced sound quality.
Low-power sleep mode Saves energy.
Product Brief
Product Features
Application Notes
BIOS/Drivers
Chipset Comparison Chart
Datasheets
Design Guides
Manuals
Product Change Notifications
Software Development Tools
Technical Specification Updates
Intel® Pentium® 4 Processor
Intel Gigabit Ethernet Controllers
Intel® Architecture-Based Entry Workstations
Motherboard Selector Guide (MBSG)
Ad Builder
Sales Brief
Where to Buy
Chipset Press Releases
Selling Intel® Platforms: Value of Intel® Chipsets and Software
Intel® E7205 Memory Controller Hub (MCH) 1005-pin Flip Chip-Ball Grid Array (FC-BGA)
Intel® 82801DB I/O Controller Hub 421-pin Micro Ball Grid Array (µBGA*)
Advanced Technology and Next-Generation Graphics
The Intel® E7205 chipset combines two core components which were designed, optimized, and validated for the Pentium 4 processor with Intel NetBurst microarchitecture.

The Intel® E7205 Memory Controller Hub (MCH) is the central hub for all data passing through core system elements, such as: the Pentium 4 processor via the system bus interface; the memory subsystem through a dual-channel memory interface; the graphics subsystem over an AGP 8X interface; and the Intel® 82801DB I/O Controller Hub via Intel Hub Interface architecture. The Intel E7205 chipset delivers the performance of 4.3 GB/s of bandwidth across the 533 MHz system bus and up to 4.3 GB/s of bandwidth across two high-performance Double Data Rate (DDR) SDRAM memory channels. The high data throughput of these interfaces augment the direct attach AGP 8X interface, which enables up to 2.1 GB/s of graphics data. Connectivity to advanced networking components and peripherals is provided via the Intel® 82801DB I/O Controller Hub. Also, the Intel E7205 chipset supports Hyper-Threading Technology. Together, these features deliver a balanced, high throughput, system for demanding workstation-class applications.

The Intel® 82801DB I/O Controller Hub (ICH4) connects to the MCH through a point-to-point Hub Interface 1.5 connection. The Intel® ICH4 provides 32-bit PCI connectivity to Intel Gigabit Ethernet adapters. Additionally, the ICH4 includes integration for up to six ports of Hi-Speed USB 2.0; offering greater bandwidth for I/O-intensive peripherals. New power management and audio capabilities are also incorporated into this component.
Before we get to the boards themselves it's important to look at a few of the key features of the E7205 chipset:

Dual Channel DDR266 Memory Bus (4.2GB/s memory bandwidth)
400/533MHz FSB Support (3.2GB/s - 4.2GB/s FSB bandwidth)
AGP 8X support
USB 2.0 support
What's interesting to note here is that the chipset only supports dual channel DDR266 and is not validated for dual channel DDR333 operation. It won't be until Intel moves to a 667MHz FSB before we see dual channel DDR333 support for single processor Pentium 4 systems simply because of bandwidth requirements.
Intel has undoubtedly regained all that they have lost in the chipset market. There was a period in time when Intel was only able to claim sales by forcing motherboard manufacturers to produce motherboards based on their chipsets but today, most motherboard manufacturers are more than excited about virtually all of Intel's chipset lines.

One interesting chipset that has been on the radar for months is Granite Bay; the first dual channel DDR solution for the Pentium 4, Granite Bay was supposed to be an entry-level Pentium 4 workstation solution. However, its feature set combined with a very pro-DDR market made Granite Bay the perfect successor to Intel's RDRAM based 850E solution as the top performer in the Pentium 4 market.

Today, Intel has finally unveiled Granite Bay and dubbed the chipset E7205 to go along with their server/workstation class chipset nomenclature. Despite the target market for the chipset, the three motherboards we have rounded up today based on the new 7205 chipset can be used as either entry level workstations or high-end desktop motherboards. In fact, a good number of E7205 partners will have enthusiast boards as well as entry level workstation solutions available.
December 25, 2002 12:16:34 AM

the motherboard sets up the memory in a dual channel setup
you just have to buy a motherboard that supports dual channel ddr
and i'd say get ddr that will run 400Mhz at cas2 (most motherboards will support it, though not officially)
but there does exist DDR433 @ cas2 as well, see <A HREF="http://www.ocsystem.com" target="_new">http://www.ocsystem.com&lt;/A>

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