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Technology Stocks : Advanced Micro Devices - Moderated (AMD)

AMD 227.90

+2.0%

3:59 PM EST

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To: Mani1 who started this subject	6/4/2001 7:09:22 PM
From: andreas_wonisch	Read Replies (4) of 275872

First real evaluation of nForce motherboard inqst.com Van Smith did it again: In our labs we compared bandwidth performance between NVIDIA nForce 420 1.2GHz Thunderbird Athlon systems with identically configured AMD760 systems. We have observed bandwidth improvements on common synthetic benchmarks that average around 30%-50%. Some individual results range up to a threefold improvement! The nForce 420 streaming performance we have witnessed is simply breathtaking. The Thunderbird Athlon is capable of software data prefetching by using its 3Dnow instruction set. In addition the new Athlon4 is equipped with an automatic hardware data prefetching mechanism. Can the nForce improve performance even when the CPU is prefetching data? In order to test this condition we used a synthetic bandwidth benchmark that is heavily optimized for 3dNow! software data prefetching. Even with this benchmark the nForce still delivered memory bandwidth performance that is 15-25% better than the 760. This is a powerful statement about the value of Nvidia’s DASP architecture even when used in conjunction with Athlon’s software or hardware data prefetch capabilities. [...] To examine the potential impact of the nForce’s HyperTransport link, we wrote a simple benchmark that times file copies. To maximize bandwidth utilization we set up three systems with identical dual IBM 7200rpm ATA100 hard drives. We then measured the time to copy a 1.44GB file in WindowsME from one drive on one ATA100 channel to a blank 10GB partition 0 of the second drive residing on the second ATA100 channel. The two systems we tested were a 1.2GHz AMD Athlon PC2100 DDR SDRAM system with an AMD760 chipset (VIA686B Southbridge), and a 1.2GHz Athlon system using a NVIDIA nForce 420 dual channel PC2100 configuration. The nForce 420 soundly beat the AMD760 system. [...] We had the opportunity to thoroughly exercise multiple nForce 420 reference platforms. Using pre-production silicon we logged several hundred hours of continuous testing. nForce delivered rock solid stability under all of our evaluations, benchmarks and torture tests. The only irregularity we encountered was related to the integrated graphics core, but this problem was immediately resolved by flashing our outdated BIOS. Wow, and these are pre-production boards. I'm extremely impressed over Nvidia's work here. Andreas

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