gwapings101 :
can you teach me how? i'm a noob at this kind of things. -.- thanks for replying! here is exactly what i bought
Corsair Vengeance 4gb
The motherboard manual should have the relevant information.
You need to enter 6 values, which may be in different locations
1. The memory speed. Marketing departments love to *** around with this. The rating on the package will say "1600Mhz" but this is actually the transfer rate. Since this is DDR (Double Data Rate) the module makes two IO bus transfers per bus clock cycle. Thus, the actual "bus frequency" for that module will be 800Mhz, and the transfer rate will be 1600 MT/s (Mega transfers per second).
Your motherboard's system settings can express this a number of ways, it can express it as the bus frequency, as the transfer frequency, or as the DDR3 standard. It takes a bit of a trained eye to tell the first two apart, but if it's expressed as a standard (it will be prefaced with DDR3-xxxx where xxxx is the speed) then it's easy to see.
If you see 1333, set it to 1600
If you see 667, set it to 800
If you see DDR3-1333, set it to DDR3-1600
2. You will need to set the DRAM voltage. That module operates at 1.5 volts and your motherboard should have it set at 1.5 volts already, but it doesn't hurt to check!
3. Now this is the hard part. You will need to set 4 DRAM timings. The module will automatically configure the modules to 7-7-7-21 or 8-8-8-24. You need to set them to 9-9-9-24 or 9-9-9-27 (preferably 9-9-9-24) for it to work properly at DDR3-1600 speeds.
The 4 values that you need to change, in that order, are:
CAS latency AKA CL
Row Address to Column Address Delay AKA Trcd
Row Precharge Time AKA Trp
Row Active Time AKA Tras
These can usually be found under the DRAM overclocking section of your system setup