Hi all,\n\nI just bought a new computer system that has a:\nP4 2.8c Ghz CPU FSB800\nASUS P4R800-VM Motherboard\n512 Hynix PC3200 DDR SDRAM\nBuilt in ATI Radeon 9200 Video w/ 128 onboard memory\nCase w/300 Power Supply\n\nI downloaded SiSoftware SANDRA 2004 to test the system to see how is\nit and it seems pretty good except for the memory benchmark.\n\nIt gave the memory Bandwidth Effieciency as 34%-35%.\n\nThis is what SANDRA'S website had to say about it.\n\n"Q: Why do some systems show close to 95% bandwidth efficiency and\nothers less than 80%?\nA: While the code for all CPUs is heavily optimised, the effciency\ndepends on chipset performance and memory settings. Only the most\naggressive settings may yield > 80% efficiency, thus anything higher\nis a bonus."\n\n[URL]http://www.sisoftware.net/index.html?dir=qa&location=ben_mem&langx=en&a=[/URL]\n\nThe reason why I'm asking this is because I'm wondering whether I have\na faulty ram and should get it replaced? 35% effiency seems awfully\nlow.\n\nHowever, SiSoftware SANDRA recommended this solution.\n\n"Warning W5400 - Low memory bandwidth efficiency (advanced test).\nGenerally this means a setting is incorrect or set too "safe"\nresulting in too low performance.\nFix: Check memory timings (reduce them) or check other chipset or\nmemory speed settings."\n\nThe problem is, is that I don't see anywhere in the bios or anywhere\nelse in the computer that can adjust the memory speed/timings.\n\nThe only thing I can find in the bios is "DRAM CAS Select: Slow/Fast".\nIt doesn't matter which one I choose, the same benchmark is shown.\n\nHere is the whole report in case you wanted to read it.\n\n~~~~~~~~~~~~~~~~~~~~~~\nSiSoftware Sandra\n\nInt Buffered iSSE2 (Integer STREAM) Results Breakdown\nAssignment : 2190MB/s\nScaling : 2196MB/s\nAddition : 2211MB/s\nTriad : 2208MB/s\nData Item Size : 16-bytes\nBuffering Used : Yes\nOffset Displacement Used : Yes\nBandwidth Efficiency : 34% (estimated)\n\nFloat Buffered iSSE2 (Float STREAM) Results Breakdown\nAssignment : 2200MB/s\nScaling : 2205MB/s\nAddition : 2217MB/s\nTriad : 2215MB/s\nData Item Size : 16-bytes\nBuffering Used : Yes\nOffset Displacement Used : Yes\nBandwidth Efficiency : 35% (estimated)\n\nTest Status\nMemory Used by Test : 191MB\nNUMA Support : No\nSMP Test : No\nTotal Test Threads : 1\nSMT Test : Yes\nNumber of Test SMT (per CPU) : 2\nDynamic MP/MT Load Balance : No\nProcessor Affinity : No\n\nChipset 1\nModel : ASUSTeK Computer Inc ??? (5833)\nFront Side Bus Speed : 4x 200MHz (800MHz data rate)\nWidth : 64-bit\nMaximum Bus Bandwidth : 6400MB/s (estimated)\n\nLogical/Chipset 1 Memory Banks\n\nFeatures\nMMX Technology : Yes\nSSE Technology : Yes\nSSE2 Technology : Yes\nSSE3 Technology : No\nHTT - Hyper-Threading Technology : Yes\n\n~~~~~~~~~~~~~~~~~~~~~\n\nPlease let me know if you need any more info. If anyone has any ideas\nas to how I can increase my memory settings/timings, that'd be greatly\nappreciated. If not, I'm assuming I should have the Ram replaced.\n\nHope to hear from anyone soon,\n\nRanma\n\np.s. Maybe I should use a different Memory Benchmark program?