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12gb or 8gb of ram

post #1 of 8
Thread Starter 
I have 3 Sticks of 4gb ram, My motherboard has 4 slots dual channel, i have one stick that is different from the other sticks, would i get better performance using just 2 slots 4gb sticks (8), or using 3 slots 4gb sticks (12)

Thanks for your help i appreciate it.
post #2 of 8
Technically, 2 slots at (2x4gb) will give you the best performance. However, you're not going to notice any difference if you keep all three sticks active.
post #3 of 8

The first 2x4GB will run in dual channel until more than 8GB is used, at which point your performance will be impacted as the entire setup will revert to single channel usage.  Since Windows optimizes for more RAM regardless of channels you could be experiencing performance losses earlier with more than 8GB of RAM which chances are you will never have to use.  Realistically the majority of people won't use more than 8GB of RAM nowadays. Not even I, and I regularly edit HD video.

post #4 of 8
Quote:
Originally Posted by xd_1771 View Post

The first 2x4GB will run in dual channel until more than 8GB is used, at which point your performance will be impacted as the entire setup will revert to single channel usage.  Since Windows optimizes for more RAM regardless of channels you could be experiencing performance losses earlier with more than 8GB of RAM which chances are you will never have to use.  Realistically the majority of people won't use more than 8GB of RAM nowadays. Not even I, and I regularly edit HD video.

I was under the assumption that if you run three sticks, you will be running in single channel.
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The Fox Box
(16 items)
 
Macbook Pro
(10 items)
 
 
CPUMotherboardGraphicsRAM
Intel 3930K ASUS P9X79 ASUS GTX 570 DCII 4 x 4GB G.Skill Sniper 1600MHz LV 
Hard DriveOptical DriveCoolingOS
Intel 330 - 180GB LG HDDVD & Blu Ray Reader Cooler Master Hyper 612 Windows 7 Ultimate 64bit 
MonitorMonitorKeyboardPower
HP ZR30w Samsung 2243BWX Ducky! PCP&C 750w Silencer (coppa) 
CaseMouseMouse PadAudio
Lian Li PC-E8 G9x S&S Steel Onkyo Receiver/Design Acoustics 2.1 system 
CPUGraphicsRAMHard Drive
Core i5 2410M HD 3000 8GB 120GB SSD 
Optical DriveOSOSOS
Super Drive OSX 10.7.2 Win 7 Enterprise (In VB) Ubuntu 10.04 (In VB) 
MonitorPower
13" 1280x800 65w Magsafe 
CPUMotherboardRAMHard Drive
Q9300 Gigabyte P35 8GB DDR2 2TB WD 
Hard DriveHard DriveHard DriveHard Drive
2TB WD 2TB Seagate 1.5TB Seagate 1.5TB Seagate 
Hard DriveHard DriveHard DriveOptical Drive
1TB Hitachi 1TB Hitachi 500GB WD DVD-RW 
OSMonitorKeyboardPower
Win Server 2012 Headless/15" touchscreen Apple mini USB PC P&C 500W 
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post #5 of 8

On non-triple channel setups that is true, to some extent.  Flex memory/interleaving allows the first 2x4GB (placed in the correct slots) to run in dual channel (since dual channel is basically an addressing feature over different DIMMs); when the RAM usage tips 8GB bandwidth will be limited to single channel.  Unless you are using apps that will make use of and benefit more from having 12GB of RAM than having higher bandwidth dual channel RAM (again chances are, not) I recommend sticking to 2x4GB.  Having two DIMMs as opposed to three or four can be better for IMC stability anyway.

post #6 of 8
Just use 2 sticks so you have a 2x4GB and your memory will have bandwidth. If you add that third stick it's going to ruin the bandwidth.
post #7 of 8
^^^^^^ BINGO, we have a winner ! thumb.gif
post #8 of 8
Thread Starter 
Alright will do! I will just have to find the time and motivation to take off my cpu cooler ( which most of the time sticks to my cpu and i always bend some pins) I have the Corsair A50 and it covers the first and half of the second DIMM and the other brand of memory is in the First DIMM...

Any idea of how to get the cpu cooler seperated from the cpu if stuck on by thermal paste? i have tried a twisting method but end up messing some pins up. Most of the time the CPU rips out of the ZIF socket when the arm is closed.
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