2 pairs of RAM with different frequencies

SerialK2015

Reputable
Oct 24, 2015
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4,520
Hi guys,

I currently have a MoBo gigabyte G1 sniper B6 with 2 cards of 4gb RAM kingston DDR3 @1600MHz...I currently have them in what the manual calls the DDR3_1 and DDR3_2 slots(the green ones) as it indicates to place same brand, capacity and frequency cards at same color slots

So recently I was given 2 more cards of 4gb kingston but at 1333MHz and tried to install them at DDR3_3 and DDR3_4 slots (the black ones) but the PC would keep on rebooting or "half turned on" but doing nothing...that, until i swap channels and it normally boots detecting all 16gb @1333 (cause it can't work with 2 different freqs at the same time right?)...everything cool!!!

So my questions are:
1- why does that happen?? is there some problem with my board or there's normally a priority channel to be picked when different frequency pairs are installed??
2- would you recommend keeping the previous 8gb @1600...or is it always better to expand capacity regardless of frequency loss( i'd say I play consuming games but I'm not sure i could need more than 8gb)

thanks in advance to you all guys..really appreciate the replies
 
Solution
When mixing memory frequency motherboard should automatically run at the fastest speed supported by all your ram, maybe there is some kinda prioritization of timings and clocks on the first channel.
It's best IMHO to run 8 GB 2x4GB kit @ 1600, although the standard for the ram capacity seems to be setting at 16GB due the more demanding apps and modern games and more powerful multitasking capable CPUs.

R0GG

Distinguished
When mixing memory frequency motherboard should automatically run at the fastest speed supported by all your ram, maybe there is some kinda prioritization of timings and clocks on the first channel.
It's best IMHO to run 8 GB 2x4GB kit @ 1600, although the standard for the ram capacity seems to be setting at 16GB due the more demanding apps and modern games and more powerful multitasking capable CPUs.
 
Solution