RAM Combinations

i have two Different RAM, PC 667 and Pc800
I want to know if its safe to use them both in my PC

I would recommend using PC800, but not with PC667 at the same time. Since ram is so inexpensive, it would be better to use just PC800 modules.
 

My Computer

System One

  • CPU
    Intel Q6600 Quad Core 2.4 Ghz
    Motherboard
    Dell 0TP406
    Memory
    4 X 1 GB DDR2 Kingston 800 Mhz
    Graphics card(s)
    Nvidia 8800 GT 512 MB
    Monitor(s) Displays
    Dual Dell 22" Widescreen
    Screen Resolution
    3360x1050
    Hard Drives
    320 GB Internal Main 500 GB USB External 160 GB USB External 2TB USB External
    Internet Speed
    DSL 3MB
You can safely use both ram together but its not recommended
having both ram sets together will reduce system performance considerably as the pc800 RAM will only work at the same speed as the pc677 (with a possible degrade)
the only reason you would ever want to mix ram like that is for a temporary solution where you may have an application that exceeds the requirements than one of the sticks capacity
pairing any two.three or four stick is the best way to go.... .Joe said the price of ram is expensive... well this is not actually true
check out 7dayshop.com - Online Store you can get ram for pennies when you look in the correct places
shop about a little and im sure you will find something affordable
 

My Computer

System One

  • Manufacturer/Model
    Me :P
    CPU
    Core 2 Quad Q6600
    Motherboard
    Abit IN9 32X MAX
    Memory
    8 GB OCZ PC2-6400 nVIDIA SLI-Ready Edition (4X2GB)
    Graphics card(s)
    AMP! GeForce GTX 260² 896MB 448-bit GDDR3 (650MHz/2100MHz
    Sound Card
    Realtek 7.1 CH HD Audio
    Monitor(s) Displays
    17" Fujitsu siemens TFT + 32" LG HD LCD TV
    Screen Resolution
    1280x1024 + 1360x768
    Hard Drives
    150GB Raptor HDD 500GB Caviar HDD
    PSU
    Thermaltake W0133RB 1200W PSU
    Case
    Antec 900
    Cooling
    Stock + Antec 900 case fans
    Mouse
    Logitech MX Revolution
    Keyboard
    Logitech G15 (full layout)
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