The high and low performance of the computer chipset greatly affects the experience of the computer. Whether the computer runs smoothly, has no obvious stuttering phenomenon, and whether the high frame rate picture is good is closely related to the performance of the computer chipset. The computer chipset is mainly composed of a Northbridge chip and a Southbridge chip. North Bridge chip is responsible for connecting with CPU and controlling memory, AGP, PCI data transmission, providing CPU type, main frequency, system front side bus (FSB), memory type, ISA/PCI/AGP slot, ECC error correction and other support, integrated North Bridge The chip also includes a display core.
Relative to the North Bridge chip, the South Bridge chip is mainly responsible for communication with IDE devices, PCI devices, sound devices, network devices and other I/O devices. So far, the South Bridge chip has only the traditional BGA package mode.
Motherboard chipset - Northbridge chip
The performance of the computer chipset has a great influence on the Northbridge chip and the Southbridge chip, especially for the Northbridge chip , which controls the data transfer of the computer memory, board interface and peripheral devices, which has a great impact on the overall performance of the computer. It is as important as the CPU CPU chip; the Northbridge chip is responsible for data flow in various channels, and the CPU processor is responsible for instruction execution and logic operations.
For each chipset, there is a corresponding Northbridge chip, so the number of Northbridge chips is very large. Let's take a quick look at the chip series of the two major brands of the chipset:
Intel platform:
Intel: 828 series chipset 82845E/82845GL/82845G/82845GV/82845GE/82845PE, except for 82845GL, it supports 533MHz FSB (82845GL only supports 400MHz FSB). Supporting memory, all 845 series North Bridges support up to 2GB of memory. The 82845GL/82845E supports DDR 266 and the rest support DDR 333. In addition to the 82845GL/82845GV, the AGP 4X specification is supported; the 865 series chipset's 82865P/82865G/82865PE/82865GV/82848P supports 800MHz FSB except for the 82865P, and the DDR 400 (82865P only supports 533MHz FSB, DDR 333, except 82848P). Both support dual channel memory and maximum 4GB memory capacity (82848P only supports single channel maximum 2GB memory), except for 82865GV, which supports AGP 8X specification; there is also the highest-end 875 series 82875P North Bridge, supporting 800MHz FSB, 4GB dual Channel DDR 400 and PAT functionality. Intel's chipset or Northbridge chip name with the word "G" also integrates the graphics core.
NVIDIA: The latest MCP73 integrated display core is the best integrated display core.
SIS: There are mainly SIS648/SIS648FX/SIS655/SIS655FX/SIS655TX supporting DDR SDRAM memory, SIS661FX integrated with graphics core, SISR659 supporting RDRAM memory and so on.
VIA: There are mainly new PT800/PT880/PM800/PM880 and earlier P4X400/P4X333/P4X266/P4X266A/P4X266E/P4M266, etc., where the VIA chipset name or the Northbridge name has the word "M" The graphics core is integrated (both on Intel platforms and AMD platforms).
Ali: I have been away from the chipset market for many years. At present, there are not many products, mainly the new M1681 and M1683.
AMD platform:
VIA: There are mainly new KT880/KT600/KT400A supporting K7 series CPUs (Athlon/Duron/Athlon XP) and earlier KT400/KM400/KT333/KT266A/KT266/KT133/KT133A and so on. Support for the K8 series CPU (Opteron/Athlon 64/Athlon 64 FX) is available in the K8T800 and K8M800.
NVIDIA: There are nForce2 IGP/SPP supporting K7 series CPUs, nForce2 Ultra 400, nForce2 400 and nForce3 150 and nForce3 250 supporting K8 series CPUs.
SIS: There are mainly SIS748/SIS746/SIS746FX/SIS745/SIS741/SIS741GX/SIS740/SIS735 supporting K7 series CPUs, SIS755/SIS755FX/SIS760 supporting k8 series CPUs, and so on.
ALi: I have been away from the chipset market for many years. At present, there are not many products, mainly including M1687 and M1689 which support K8 series CPU.
Under normal circumstances, the larger the number of the computer chipset model, the stronger the performance; the more functions and interfaces supported by the chipset, the more peripherals, the better the performance.
The more recent and supported memory cores supported by the chipset, the greater the FSB value of the memory front-end bus, the more powerful the performance.
Small computer system interface (SCSI) is an independent processor standard for system level interfaces between computers and intelligent devices (hard disks, floppy drives, optical drives, printers, scanners, etc.). SCSI is an intelligent universal interface standard.
In addition to SCSI, IDE is also a very common interface. From the point of view of ease of use, IDE is more suitable for ordinary users. In addition, personal computer users not only need to configure a few peripherals, but also do not require high speed. Therefore, it is more appropriate to choose IDE interface. In addition, IDE also has the characteristics of high performance price ratio and wide application. Although the SCSI interface has many incomparable characteristics, the price of the interface and its peripherals is too expensive to be borne by ordinary users, which determines the limitation of its actual use range.
1. The working mode of IDE requires the whole process participation of CPU. When the CPU reads and writes data, it can't perform other operations. In this case, in the multitask operating system of Windows 95 / NT, the system reaction will be greatly slowed down. The SCSI interface controls the data reading and writing operation completely through the independent high-speed SCSI card, so the CPU does not have to waste time to wait, which obviously can improve the overall performance of the system. However, IDE interface has also made great improvements to improve this problem. DMA mode can be used instead of PIO mode to read and write data. DMA channel is responsible for data exchange, which greatly reduces the CPU consumption. However, comparing the CPU utilization of SCSI and IDE, we can find that SCSI still has considerable advantages.
2. The scalability of SCSI is larger than that of IDE. Generally, each ide system can have two IDE channels, with a total of four IDE devices. The SCSI interface can connect 7-15 devices, much more than IDE, and the cable connected is far longer than ide.
3. Although the price of SCSI device is higher, compared with IDE, the performance of SCSI is more stable, durable and reliable.
SCSI Solder Type Section
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