3*2GB Ram on Dual Channel

[KatatesPizartmasi]

Hey guys, I have M4A87TD/USB3 motherboard. And I would like to use 6gb ram.

Kingston HyperX 2GB DDR3 1333MHz CL7 KHX1333C7AD3/2G
Kingston HyperX 2x2GB DDR3 1333MHZ CL7 KHX1333C7D3K2/4GX

Are these going to be a problem? Or are they fine?

 

[Tradesman1]

Can try, will prob need to raise the DRAM voltage about + 0.07 and the CPU/NB about + 0.10 and not positive of yoru mobo offhand but if it supports mixing will have 4GB in dual channel and 2 GB in single - if it doesn't support the equivalent to flex mode then all 6 will simply run in single channel mode

 

[KatatesPizartmasi]

Can try, will prob need to raise the DRAM voltage about + 0.07 and the CPU/NB about + 0.10 and not positive of yoru mobo offhand but if it supports mixing will have 4GB in dual channel and 2 GB in single - if it doesn't support the equivalent to flex mode then all 6 will simply run in single channel mode

I don't know if it supports. But why do I need raising voltage? By the way probably they are raised. Because I am using Phenom 945, but overclocked to 965 by Bios.

 

[Tradesman1]

To mix different sticks you often have to increase voltage slightly to get them to play together, hopefully they would play nice, but more often than not they won't

 

[KatatesPizartmasi]

To mix different sticks you often have to increase voltage slightly to get them to play together, hopefully they would play nice, but more often than not they won't

CL(IDD) 9 cycles
Row Cycle Time (tRCmin) 49.5ns (min.)
Refresh to Active/Refresh 110ns
Command Time (tRFCmin)
Row Active Time (tRASmin) 36ns (min.)
Power 1.800 W
UL Rating 94 V - 0

These are exactly the same for 3 modules. Still gonna be a problem?

 

[Tradesman1]

Those things are rated for 1.6.5 and you have them at 1.8, sorry I wouldn't touch that, 1.7 is pressing the highest I'd take the sticks - I'd suggest looking for a good set of sticks that run 1600/9 at 1.5 or even less

 

[KatatesPizartmasi]

Those things are rated for 1.6.5 and you have them at 1.8, sorry I wouldn't touch that, 1.7 is pressing the highest I'd take the sticks - I'd suggest looking for a good set of sticks that run 1600/9 at 1.5 or even less

Its not possible me to buy new modules. What should I do before I attach that third 2gb to mobo?

 

[Tradesman1]

It's up to you, at 1.8 like aI said I wouldn't touch them, that's too much voltage

 

[KatatesPizartmasi]

It's up to you, at 1.8 like aI said I wouldn't touch them, that's too much voltage

And my last question, attaching the 3rd module, does it decrease the performance or increase the performance?

 

[Tradesman1]

When talking 2GB at a time it's an increase, entry level for DRAM these days is 8GB