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Looking at the Intel E3-1230v2 CPU, under Memory types it says "DDR3-1333/1600". My question is, in what way does the CPU limit the RAM speed? What would happen if I put in a DDR3-2133 RAM chip together with the CPU, if the motherboard supports the faster RAM speed? Would it be better to get a RAM chip that is DDR3-1600 so it matches the CPU's listed frequency?
1The CPU can only access the memory at the speed it was designed to do so at. The memory can only be access as quickly as it was designed. If you use faster memory then the CPU supoprts the speed is limited by the CPU. You gain nothing by putting memory faster then can be supported by the motherboard, infact, past a certain point the memory might not even result in a POST. – Ramhound – 2014-05-14T18:16:09.587
@Ramhound: Would it be better to get a RAM chip that is DDR3-1600 so it matches the CPU's listed frequency or is there no significant difference? – Claudiu – 2014-05-14T18:18:12.600
1It makes no difference. If the RAM run as a faster frequency then supported by the CPU it will be ran at the frequency that is supported. The simple fact is your unlikely to see a difference unless you double or triple the difference of difference memory. This means that 1600 mhz and 1800 mhz while in theory one is faster you really won't see a performance difference. You would only see a difference in benchmarking which only provides a general overview of your potential performance. – Ramhound – 2014-05-14T18:21:39.880