I'm building with a GIGABYTE GA-870A-UD3 AM3 AMD 870 SATA 6Gb/s USB 3.0 ATX AMD Motherboard. (And a AMD Phenom II X4 955 Black Edition. And an entry level Radeon HD 5570 1GB video card.) The ram description on the mother board says:
"DDR3 1866(OC)/1333/1066 *To reach DDR3 1866MHz or above, you must install two memory modules and install them in the DDR3_3 and DDR3_4 memory sockets."
1) Can I use 2000mhz ram or does it have to be 1866mhz exactly? 2) How big of a difference am I going to see between 1333mhz and 1866mhz? On a non gaming business machine running three monitors and multiple apps?
The reason I ask is financial. 1333 ram is cheapest. 2000 ram is next expensive. And 1866 more expensive than that.
Thanks in advance for any help. Greatly appreciate these forums.
More aboutddr3 1866mhz gigabyte 870a
1- Not really, you can use even a 1333MHz RAM and overclock it to 1866. 2- That depends of RAM's timings.
How do I figure out how fast my ram is working? I have CPU-Z installed. And then how do I change it if it's not running at 1866?
Open CPU-Z and select the memory tab, then you can see "frequency", take that number and multiply it by 2 (dual channel)