A1000 On-Line - Item Description Page

FEATURES- Pentium 4 CPU- 2.53 GHz OEM 533MHz FSB, 512 KB cache and .13 micron die size. Uses the Socket 478 FC-PGA2 (Flip Chip-Pin Grid Array) connector and requires a 850 chipset motherboard. The Intel� Pentium� 4 processor is the next evolutionary step for desktop processor technology. Based on Intel� NetBurst� micro- architecture, the Pentium 4 processor offers higher-performance processing than ever before. Built with Intel's 0.13-micron technology, the Pentium 4 processor delivers significant performance gains for use in home computing, business solutions and all your processing needs. * The hyper-pipelined technology of the Intel NetBurst microarchitecture doubles the pipeline depth compared to the P6 microarchitecture used on today's Pentium III processors. One of the key pipelines, the branch prediction/recovery pipeline, is implemented in 20 stages in the Intel NetBurst microarchitecture, compared to 10 stages in the P6 micro- architecture. This technology significantly increases the performance, frequency, and scalability of the processor. * The Pentium 4 processor's 533-MHz system bus supports Intel's highest performance desktop processor by delivering 4.2 GB of data-per-second into and out of the processor. This is accomplished through a physical signaling scheme of quad pumping the data transfers over a 133-MHz clocked system bus and a buffering scheme allowing for sustained 533-MHz data transfers. * In addition to the 8-KB data cache, the Pentium 4 processor includes an Execution Trace Cache that stores up to 12-K decoded micro-ops in the order of program execution. This increases performance by removing the decoder from the main execution loop and makes more efficient usage of the cache storage space since instructions that are branched around are not stored. The result is a means to deliver a high volume of instructions to the processor's execution units and a reduction in the overall time required to recover from branches that have been mis- predicted. * Two Arithmetic Logic Units (ALUs) on the Pentium 4 processor are clocked at twice the core processor frequency. This allows basic integer instructions such as Add, Subtract, Logical AND, Logical OR, etc. to execute in one-half a clock cycle. For example, the Rapid Execution Engine on a 2.53 GHz Pentium 4 processor runs at 5.1 GHz. * 512-KB L2 Advanced Transfer Cache (ATC). The Level 2 ATC delivers a much higher data throughput channel between the Level 2 cache and the processor core. The Advanced Transfer Cache consists of a 256-bit (32-byte) interface that transfers data on each core clock. As a result, the Pentium 4 processor at 2.53 GHz can deliver a data transfer rate of 81 GB/s. This compares to a transfer rate of 16 GB/s on the Pentium III processor at 1 GHz. Features of the ATC include: - Non-Blocking, full speed, on-die level 2 cache - 8-way set associativity - 256-bit data bus to the level 2 cache - Data clocked into and out of the cache every clock cycle * The Advance Dynamic Execution engine is a very deep, out-of-order speculative execution engine that keeps the execution units executing instructions. The Pentium 4 processor can also view 126 instructions in flight and handle up to 48 loads and 24 stores in the pipeline. It also includes an enhanced branch prediction algorithm that has the net effect of reducing the number of branch mis-predictions by about 33% over the P6 generation processor's branch prediction capability. It does this by implementing a 4-KB branch target buffer that stores more detail on the history of past branches, as well as by implementing a more advanced branch prediction algorithm. * The Pentium 4 processor expands the floating-point registers to a full 128-bit and adds an additional register for data movement which improves performance on both floating-point and multimedia applications. * With the introduction of SSE2, the Intel NetBurst microarchitecture now extends the SIMD capabilities that MMX technology and SSE technology delivered by adding 144 instructions. These instructions include 128-bit SIMD integer arithmetic and 128-bit SIMD double-precision floating-point operations. These instructions reduce the overall number of instructions required to execute a particular program task and as a result can contribute to an overall performance increase. They accelerate a broad range of applications, including video, speech, and image, photo processing, encryption, financial, engineering and scientific applications. * Data Prefetch Logic is functionality that anticipates the data needed by an application and pre-loads it into the Advanced Transfer Cache, further increasing processor and application performance.