As mentioned it should be okay, are you slowing it down? Well, I think you are looking at it in the wrong way. See you have
1.Total amount
2.Speed
3.latency
Amount is what your talking about like adding 1024 + 256 total 1280
Speed is such as
PC2700 (DDR333)
PC3200 (DDR400)
Okay to understand this, you see where it says 333 and 400? well thats 333Mhz and 400Mhz. that's the speed the ram can run at. If you put a 400Mhz module with a 333Mhz module the 400Mhz module will be slowed down to 333Mhz because they have to run at the same speed.
Latency, well the simplest way I can explain this is to say, Thats how fast it reacts, another words look at it like this,
you have to at the same 400Mhz but one has a lower latency, the 1 with the lower latency will get the information to the cpu first because once it received the information it reacted faster then the other. (now don't confuse this with speed because the both can send it at the same speed but one is just faster at reacting)
To understand more about ram read this
http://forums.techguy.org/hardware/531492-guide-building-your-own-system.html
scroll down to the 5th post (my post) and that will give you the general explanation.
1.Total amount
2.Speed
3.latency
Amount is what your talking about like adding 1024 + 256 total 1280
Speed is such as
PC2700 (DDR333)
PC3200 (DDR400)
Okay to understand this, you see where it says 333 and 400? well thats 333Mhz and 400Mhz. that's the speed the ram can run at. If you put a 400Mhz module with a 333Mhz module the 400Mhz module will be slowed down to 333Mhz because they have to run at the same speed.
Latency, well the simplest way I can explain this is to say, Thats how fast it reacts, another words look at it like this,
you have to at the same 400Mhz but one has a lower latency, the 1 with the lower latency will get the information to the cpu first because once it received the information it reacted faster then the other. (now don't confuse this with speed because the both can send it at the same speed but one is just faster at reacting)
To understand more about ram read this
http://forums.techguy.org/hardware/531492-guide-building-your-own-system.html
scroll down to the 5th post (my post) and that will give you the general explanation.
