Stupid question memory bandwidth

TexTex Dallas/Ft. Worth
edited January 2004 in Hardware
Ok all you gamer OC guys. I got a question or two.

Can sandras memory bandwidth test be trusted? Is it considered correct?

I just hit a 3545 on it and its saying thats faster then pc3200? Is that correct? And this is sandra 2004 pro also. I think its throwing up on me. This is 1gb (4 stciks of 256mb) pc2100 with ecc enabled also.

tex

Comments

  • madmatmadmat
    edited January 2004
    What board, chipset?
    My 875P with pc3700 gets like 5500 with the ram at 411mhz.
    An Nforce 2 based mobo will be able to do up to 6400 in theory.
  • TexTex Dallas/Ft. Worth
    edited January 2004
    This is off msi k8d. pc2100. One cpu. The slowest cheapest one. Everything is bone stock. no oc. Your fsb is twice mine. This is memory I buy on ebay for 25 bucks a pop. Just reg ddr. Cl 2.5 and its even got the ecc enabled.

    Tex
  • madmatmadmat
    edited January 2004
    It might be an issue with the chipset.
    Is it a dual cpu board? Dual Opteron? If so it's running Dual channel DDR as well which at 2X2100Mbs would give you the potential for 4200.
  • TexTex Dallas/Ft. Worth
    edited January 2004
    Chipset 1
    Model : Advanced Micro Devices (AMD) Athlon 64 / Opteron HyperTransport Technology Configuration
    Front Side Bus Speed : 1x 199MHz (199MHz data rate)
    Total Memory : 1024MB ECC DDR-SDRAM Registered
    Memory Bus Speed : 2x 126MHz (252MHz data rate)

    Don't know ??? Thats what sandra is reporting.
  • madmatmadmat
    edited January 2004
    Try patching it, but looking at an Intel dual ch DDR chipset numbers with PC2100, it was showing 3356 as a reference number so maybe your is running a dual ch setup as well.
  • hypermoodhypermood Smyrna, GA New
    edited January 2004
    Tex,

    The Opteron's memory controller is integrated into the CPU. Therefore, it is running at CPU speed and not FSB speeds. The latency introduced by the CPU communicating with the memory controller is essentially eliminated.

    Prime's done some testing with them before so maybe he can pitch in.
  • mmonninmmonnin Centreville, VA
    edited January 2004
    Yeah the memory bandwidth is like outragious on the new 64bit AMDs. Very little latency as well.
  • madmatmadmat
    edited January 2004
    After a lot of digging I found that you have the amd-8000 series of chipset but other than that I can't find squat as far as specs for that chipset go.
    AMD has to have the worst organization of a website I've ever seen.
  • TheLostSwedeTheLostSwede Trondheim, Norway Icrontian
    edited January 2004
    It's correct Tex. Get some 3200 memory and that thing will fly.
  • TexTex Dallas/Ft. Worth
    edited January 2004
    Mackanz wrote:
    It's correct Tex. Get some 3200 memory and that thing will fly.

    For what I use it for the cpu speed is the holdup not memory. You have to use reg ecc memory and pc3200 or pc3700 would be outrageous. I only have 1gb now and I'm scarfing to add another. 2gb at this speed would due me better then 512mb at pc3700 speed for what this was built for.

    That explains one other thing though. I was wondering how they got away with also allowing not only pc2100 but also even pc1600 memory on this thing.

    Tex
  • Geeky1Geeky1 University of the Pacific (Stockton, CA, USA)
    edited January 2004
    Tex, just out of curiosity, what do you use these things for?
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