Tight Timings vs High Clock Frequencies

Test Setup

Socket 939 AMD Opteron 165
Denmark core (1800 MHz, 2 x 1 MB L2 Cache)
Socket 939 DFI LANParty UT SLI-DR Expert
Rev. A3 BIOS: 12/07/2005
Chipset: Nvidia nForce4
DDR G.Skill F1-4400DSU2-1 GBFC
2x 512 MB DDR550 (275 MHz, CL 2.5-4-4-8 1T)
Common Hardware
Graphics Card (PCIe) Point of View 7800GT
GPU: Nvidia GeForce 7800GT (480 MHz)
Memory: 256 MB GDDR3 (1180 MHz)
Hard Drive I SATA Western Digital WD740
74 GB, 8 MB Cache, 7200 RPM
Hard Drive II SATA Maxtor Diamondmax 10
300 GB, 16 MB Cache, 7200 RPM
Nvidia nForce 4 SLI Forceware 6.70
Nvidia Graphics Detonator 81.98
DirectX Version: 9.0c (4.09.0000.0904)
OS Windows XP, SP2

Benchmarks And Settings

Benchmarks and Settings
DirectX 9
3DMark01 SE Build 330
Resolution: 640x480, 32 Bit (to eliminate any graphics bottleneck)
Default Benchmark Run
SiSoftware Sandra 2005 Version 2005.10.10.69 SR3
Memory Bandwidth Benchmark
Everest Ultimate Edition 2006 Version 2.50.480
Memory Latency Benchmark
SuperPI Version: 1.1
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  • jona1
    Excellent article. I was looking for a good explanation of memory timings. Thank you (I am from Uruguay, sorry for my bad English :) )
  • Anonymous
    Good Article I guess. I've been wondering that exact question now that i got 2x1GB of Patriots PC2-8500 Viper Series from NVISION08. The timings are 5-5-5-15 2T at 1066MHz. When i try to lower it 1T it's not reliable. Anyways, thanks tomshardware for another good article, I hope there is a sequel to this, specifically DDR2 or 3 memory.
  • spellbinder2050
    As most of you are probably aware, the MHz clock speed of the Athlon 64 and Opteron is the product of the HyperTransport speed (HTT) times the multiplier of the CPU.

    Correct me if I'm wrong, but shouldn't this be written as, "the MHz clock speed of the Athlon 64 and Opteron is the product of the HyperTransport speed (HTT) and the multiplier of the CPU."
  • Anonymous
    HTT times Multiplier = CPU speed, the article is correct