Max amt of DDR3 2400 Memory for Sabertooth Z77

[NIK1]

I have G.SKILL Trident X Series 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 2400 (PC3 19200) Desktop Memory Model F3-2400C10D-16GTX and working fine at the rated 2400ghz.A friend of mine sold me his Gskill memory that is the same as mine,2 8 gig sticks for 80 bucks.I put the other 2 sticks for 32 gig total and she would not boot, then tried only 3 sticks for 24 gig and still a no go. Is my I5 3570k with a sabertooth z77 board at the limits with 2 "8" gig sticks at 16 gb. I checked the ram he sold me and as long as I use 2 sticks she runs fine. Would more voltage help in at least getting 3 8 gig sticks to work for 24 gig max, or underclocking it to a lower ghz. No worries though 80 bucks for 2 sticks 2400 memory goes for close to 200 bucks at a local computer parts store. If she wont take anymore of this ram I will use it for another build I am doing this month. Anyone have any ideas...

 

[SiNxPride]

It could be that both kits don't want to work together. Generally, when you're mixing two kits even if its the same model with the same frequency, timings and voltage it could cause some compatibility issues. You can try raising the DRAM voltage a little to see if that helps.

 

[Tradesman1]

COuld be a few things, first might be your CPU can't handle 32GB of 2400, so could try at 2133, also do you have any OC on the 3570K, would prob want 4.2 or so, also prob need to increase the MC (memory controller) voltage to 1.15 or so. If it a strong 3570K then it's certainly possible, I ran 32GB of these with my IB rig, could also start at 1866, 9-10-9-28 and see if that works, if so kick it up to 9-11-11-29 at 2133 and try (initially with either, I'd leave voltage at 1.65.