El 26/02/07, "Francisco Javier Martínez de Pisón Ascacíbar (UR)"
Hola,
Tenemos que comprar unos servidores duales para cálculo intensivo con 16Gigas de ram. Nos surge la duda de si comprarlos con 2 Opteron 2.4GHz (3500€)o 2 XEON Woodcrest 2.33GHz (5400€). La diferencia es de 1800€ entre uno y otro.
Me había olvidado de pasrte un link del sitio de tomshardware, donde aparece tambien la comparativa, y donde aparece explicado el porque del mayor consumo de los actuales Opteron frente a los Woodcrest: La diferencia radica en que al tener el controlador de memoria en el micro, este controlador requiere de unos cuantos wats extras, que en el caso de intel, no se consumen en el micro, pero se consumen en el chipset donde va este controlador (probablemente con mayores perdidas de energía). Un resumen de la comparativa: AMD Opteron: * It has been the faster processor, especially for floating point operations * HyperTransport interconnects processors and core logic. This point-to-point interconnect scales much better than bus interfaces. * Power consumption is acceptable even when under load * Socket 940 is the basis for all Opteron models that have been released. Usually you can upgrade to one of the dual core models. * Each processor has its own memory controller. * No FB-DIMM memory is required. Registered DDR400 memory is enough. * Quad core Opterons will require a Socket F platform. Intel Xeon: * The Front Side Bus is the interface and a potential bottleneck between the processor(s) and the chipset northbridge. The 5000 chipset widens this bottleneck by implementing seperate Front Side Busser per processor (DIB). * Dual core Xeon Paxville DP has high to very high power requirements. * Dual Core Xeon Dempsey 5000 has high power requirements. * Less flexible platform design: A Xeon Nocona or Irwindale (socket 604) can only be upgraded with a dual core Xeon Paxville DP. If you want a Xeon 5000 (Dempsey) or Xeon 5100 (Woodcrest) you need the 5000 chipset platform for socket 771 (Bensley). * Quad channel DDR2 memory controller offers more bandwidth, but requires FB-DIM modules * Intel's chipset and FB-DIMM components require more energy than the Opteron equivalents * Quad core Xeons are technically feasible for socket 771. http://www.tomshardware.com/2006/06/26/xeon_woodcrest_preys_on_opteron/page2... "we do not see Woodcrest knocking out AMD, since the HyperTransport architecture remains the best choice for 4P solutions thanks to its point-to-point layout and dedicated memory controller per processor. Also, socket F will accelerate HyperTransport links to make sure that multi-core processors don't suddenly saturate the interface. Finally, Intel might have to convince SMB customers of the benefits of fully buffered memory, because a 2P Opteron system does still provide a very good value - especially if you can live with 4 - 8 GB of memory. FB-DIMMs will only have a serious benefit if multiple modules are deployed." http://www.tomshardware.com/2006/06/26/xeon_woodcrest_preys_on_opteron/page1... Salu2 --------------------------------------------------------------------- Para dar de baja la suscripción, mande un mensaje a: opensuse-es+unsubscribe@opensuse.org Para obtener el resto de direcciones-comando, mande un mensaje a: opensuse-es+help@opensuse.org