Intel BL440ZX
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Intel BL440ZX，是一款电脑主板，主芯片组为Socket370，内存类型为SDRAM。
编辑
主芯片组：Intel 440ZX
CPU插槽：Socket 370
CPU类型：赛扬
内存类型：SDRAM
集成芯片：非整合
显示芯片：无
编辑
集成芯片：非整合
芯片厂商：Intel
主芯片组：Intel 440ZX
显示芯片：无
音频芯片：无
网卡芯片：内建硬件监测芯片
CPU类型：赛扬
CPU插槽：Socket 370
CPU描述：Intel Celeron处理器
支持CPU数量：1颗
主板总线：100
内存类型：SDRAM
内存描述：二个168-pin DIMM
显卡插槽：一个AGP插槽
PCI插槽：三个PCI插槽
IDE插槽：二个IDE插槽，支持Ultra ATA 33/66
FDD插槽：一个FDD插槽
USB接口：二个USB接口
外接端口：二个16550 UART兼容串列口
PS/2接口：一个PS/2键盘接口和一个PS/2鼠标接口
并口串口：一个并口（EPP/ECP/SPP）与二个串口（兼容6550A）
主板板型：ATX板型
外形尺寸：307 x 210
BIOS性能：Award 即插即用BIOS
电源插口：ATX电源
超频功能：电压监测及警告，支持对CPU电压的调节
硬件监控：主板内置的系统侦测晶片能监测电压的供应、风扇转速及系统温度
包装清单：主板说明书一本，一根硬盘线，一根软驱线，带有固定螺丝
The Intel 440BX (codenamed Seattle), is a chipset from Intel, supporting Pentium II, Pentium III, and Celeron processors. It is also known as the i440BX and was released in April 1998. The official part number is 82443BX.
Intel 82443BX (440BX northbridge) on an Abit BF6
The 440BX originally supported Slot 1 and later Socket 370 Intel P6-based processors in single and SMP configurations at speeds of up to 1 GHz (and potentially up to 1.4 GHz with certain unsupported modifications, up to 1.7 GHz can be achieved using Front Side Bus speeds higher than 133 MHz and appropriate cooling). Its southbridge counterpart is the PIIX4E.
The Intel 440BX is the third Pentium II chipset released by Intel, succeeding the 440FX and 440LX. With the new 100 MHz front side bus, Pentium II CPUs were able to scale better in performance by reducing the difference between processor clock and bus speed. The previous 66 MHz bus had become a serious bottleneck and dated back to the first Pentium "Classic" chipsets.
The 440BX had two closely related chipset peers; the 440ZX and 440MX. 440MX is a mobile chipset for laptops, although a number of notebooks did use 440BX. 440ZX is a cost-reduced version of 440BX. It has a lower maximum RAM limit resulting from having support for only 2 RAM banks. The 440ZX-66, designed for Intel Celeron processor, is limited to 66 MHz FSB speed.[1]
The 440BX became one of Intel's most popular chipsets. Enthusiasts enjoyed its overclockability, with the chipset capable of running the front-side bus at speeds ranging from 66 MHz to well over 133 MHz, in stark contrast to the 440LX's struggle to top 75 MHz. A common overclock involved the pin-40 hack, or using an ABIT BP6 or Asus P2B, and setting the bus speed on a 66 MHz Covington or Mendocino-core Celeron to 100 MHz. The Mendocino-core Celeron 300A became a "sweet spot" for overclockers, with nearly 100% success rates at reaching 450 MHz on a 100 MHz FSB, allowing it to equate to a much more expensive Pentium II at 450 MHz. Other popular overclocks included the SL2W8-stepping Deschutes-core Pentium II that could often run to 450 MHz at 100 MHz FSB, and the SL35D Katmai-core Pentium III 450 MHz which could frequently manage 600 MHz on a 133 MHz FSB. The later Pentium III Coppermine-core processor was easily overclocked and performed well on 440BX motherboards. Finally, the unsupported Tualatin-core Pentium III could be used with an adapter and various modifications, with varying degrees of success.
Ironically, the 440BX offered better performance than several of its successors. The i810 and i820 chipsets were unable to beat the 440BX at the 100 MHz FSB speed. The i820 was plagued with a requirement for high cost RDRAM to reach good performance, along with a string of reliability issues involving an RDRAM-to-SDRAM memory translator hub in designs using that chipset with SDRAM. Unofficially, the 440BX could often be taken to 133 MHz FSB. Enthusiast motherboards, such as the Asus P3B-F and Abit BH6/BF6/BE6 series, were equipped with BIOS options to set the board to this unofficial speed. With a 133 MHz FSB, the 440BX could even match the later i815 chipset, which was designed to accommodate the final Tualatin-core Pentium III.
Unfortunately, running a 440BX above 100 MHz FSB resulted in the AGP video card being forced to run on an overclocked AGP bus, as the 440BX only had "2/3" and "1/1" bus dividers. Some video cards were tolerant of this, such as various early NVIDIA GeForce cards, but more than a few were unstable with a 35% AGP overclock.[2]The PCI bus was not affected by this problem (there was a "1/4" bus divider for the PCI bus on the 440BX) so users could use a PCI graphics card in lieu of an AGP one. However, this inflicted a performance penalty on graphical performance since PCI has significantly lower bandwidth throughput than AGP.
Still, the later i815 was considered the best Pentium III chipset because it offered a better feature set and very similar performance relative to the 440BX. Not only did the i815 support a proper "1/2" AGP divider for the 133 MHz FSB clock rate, AGP 4x, and Ultra DMA 100, but the later revisions also directly supported the Tualatin Pentium III.
The success of the 440BX chipset has caused various software emulation and virtualization packages to use it as part of their virtual system. VMware and Microsoft Virtual PC present the Intel 440BX chipset virtually to hosted virtual machines, due to its broad compatibility.
This chipset lacked support for 256Mbit SDRAM, which became more common in the 2002 to 2003 period. The higher end 440GX chipset released in June 1998 that was originally intended for servers and workstations has this support.
The Intel 440 series of chipsets built on the Pentium’s success to advance Intel dominance.
The 440LX (by this time Intel had dropped the term Triton) was the successor to the Pentium Pro 440FX chipset and was developed by Intel to consolidate on the critical success of the Pentium II processor launched a few months earlier. The most important feature of the 440LX is support for the Accelerated Graphics Port (AGP), a new, fast, dedicated bus designed to eliminate bottlenecks between the CPU, graphics controller and system memory, which will aid fast, high-quality 3D graphics.
Other improvements with the LX are more like housekeeping, bringing the Pentium II chipset up to the feature set of the 430TX by providing support for SDRAM and Ultra DMA IDE channels. The chipset includes the Advanced Configuration and Power Interface (ACPI), allowing quick power down and up, remote start-up over a LAN for remote network management, plus temperature and fan speed sensors. The chipset also has better integration with the capabilities of the Pentium II, such as support for dynamic execution and processor pipelining.
The 440EX AGPset, based on the core technology of the 440LX AGPset, is designed for use with the Celeron family of processors. It is ACPI-compliant and extends support for a number of advanced features such as AGP, UltraDMA/33, USB and 66MHz SDRAM, to the Basic PC market segment.
The PC’s system bus had been a bottleneck for too long. Manufacturers of alternative motherboard chipsets had made the first move, pushing Socket 7 chipsets beyond Intel’s 66MHz. Intel’s response came in April 1998, with the release of its 440BX chipset, which represented a major step in the Pentium II architecture. The principal advantage of the 440BX chipset is support for a 100MHz system bus and 100MHz SDRAM. The former 66MHz bus speed is supported, allowing the BX chipset to be used with older (233MHz-333MHz) Pentium IIs.
The 440BX chipset features Intel’s Quad Port Acceleration (QPA) to improve bandwidth between the Pentium II processor, the Accelerated Graphics Port, 100-MHz SDRAM and the PCI bus. QPA combines enhanced bus arbitration, deeper buffers, open-page memory architecture and ECC memory control to improve system performance. Other features include support for dual processors, 2x AGP, and the Advanced Configuration Interface (ACPI).
The 440ZX is designed for lower cost form factors without sacrificing the performance expected from an AGPset, enabling 100MHz performance in form factors like microATX. With footprint compatibility with the 440BX, the 440ZX is intended to allow OEMs to leverage BX design and validation investment to produce new systems to meet entry level market segment needs.
Released at the same time as the Pentium II Xeon processor in mid-1998, the 440GX chipset was an evolution of the 440BX AGPset intended for use with Xeon-based workstations and servers. Built around the core architecture of its 440BX predecessor, the 440GX includes support for both Slot 1 and Slot 2 implementations, a 2x AGP expansion slot, dual CPUs and a maximum of 2GB of memory.
Importantly, the chipset supports full speed backside bus operation, enabling the Pentium II Xeon’s Level 2 cache to run at the same speed as the core of the CPU.