Anything wrong with this CUDA-oriented dual Nehalem build?

BUDGET RANGE: $3500-$4000

SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: CUDA, multithreaded crunching, sw development


OVERCLOCKING: not particularly

SLI OR CROSSFIRE: if irrelevant to CUDA, no

The choice of motherboard is specifically for the 4 PCI-E 2.0 x16 slots; I'm starting out with a GTX 295 for graphics + CUDA, will swap in more/different boards for testing & running large problems.

Particular points of ignorance: is the case appropriate? Will the power supply be adequate to running 4 graphics cards? Anyone experienced in the downsides of using a card for display and CUDA at the same time?


TYAN S7025WAGM2NR Dual LGA 1366 Intel 5520 SSI EEB Dual Intel Xeon 5500 Series Server Motherboard - Retail

2 x Intel Xeon E5520 Nehalem 2.26GHz 4 x 256KB L2 Cache 8MB L3 Cache LGA 1366 80W Quad-Core Server Processor - Retail

2 x Thermalright Ultra-120 Extreme RT 1366 Rev C CPU Cooler

KINGSTON 24GB (6 x 4GB) ValueRAM™ Dual-Rank PC3-8500 DDR3 1066MHz CL7 SDRAM DIMM, ECC Registered

EVGA 017-P3-1295-AR Geforce GTX 295 CO-OP Edition 1.79GB GDDR3 PCI Express x16 (2.0v) Video Card Retail

BFG Tech EX-1200 BFGR1200WEXPSU 1200W Continuous Rated at 40°C ATX12V 2.2 / EPS12V 2.91 SLI Ready CrossFire Ready 80 PLUS Certified Modular Active PFC Power Supply - Retail

LITE-ON Black 24X DVD+R 24X DVD-R SATA Black 24X DVD Writer LightScribe Support - Retail

Western Digital VelociRaptor WD3000HLFS 300GB 10000 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive

Intel X25-M Mainstream SSDSA2M080G2R5 2.5" 80GB SATA II MLC Internal Solid State Drive (SSD) - Retail

LIAN LI PC-P80 Black Aluminum ATX Full Tower Computer Case - Retail
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  1. ^ These threads would help...
    So you would get an idea whether CUDA is what you require...

    And you might be able to power 4 GTX 295s with that 1200W PSU...but that doesnt have the required power connectors for 4 GTX 295s...And you would need a 8Pin CPU power splitter to power the 2 CPUs...

    Instead go with any of these...
    Antec TPQ-1200 1200W

    Or this will be even better
    ENERMAX Galaxy EVO EGX1250EWT 1250W

    RAM - Check these out...

    I dont see any incompatibilities with the build, but just make sure that the 4 PCIe slots on the mobo run at full x16 speed as a single GTX 295 has 2 GTX 275 chips and if the x16 slots runs at x8 speed, it will surely bottleneck the GTX 295...
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