What is the difference betweeen a 266, 333 and 400 hz ram. Does it have a big effect , specially in gaming?
1. Memory comes in 133Mhz, 166Mhz and 400Mhz -- the 266, 333 and 400 are the DDR-ized values
2. It makes a difference
can I put besides a 266hz a 333hz?
Depends on the motherboard. Some really good mobos dont let you do that.
Since I am trying to by a 512 mb ram, and I have a 256 with 266hz , so what would be better to have 512mb ram with 333hz or 768mb with 266 hz?
Depends on the mobo -- and its MHz -- not hz.
well I have an intel mobo D865GBF with 513mhz bus speed
If you have that mobo running 513 then something is wrong -- it's supposed to be 533
In the case of that specific mobo you should be ok
what will the virtual memory speed be?
Very slow. Several hundred (maybe thousand) times slower.
well does increasing the fsb have a harm?
Only if you screw up or the system screws up
So what program do I use to increase the RAM speed, and how do I control the temp?
You dont use programs (and you shouldnt because 'programs' tend to make things feel 'safe' and people get careless). You OC in the BIOS. Temperature is 'controlled' via heatspreaders and active memory coolers
you dont use a program. you have to do it manually
Technically u could (although its not reccomended)
thanks. But isnt it better to get 512 ram with 400mhz rather then 226 and use it by downclocking it? Cause I may use it in the future with new motherboards.
Define "future" -- if "future" = "long time" then get the cheaper stuff as the future wont be using DDR