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Using RAM frequency over the motherboard's support

post #1 of 5
Thread Starter 
Hey, peeps!

Gigabyte's site states that G1 Sniper M3 officially supports "2400(OC)/1600/1333/1066 MHz". However, I've seen several users installing 1866 and 2133 modules onto the mobo. From what I've heard, these users don't get more performance than those using 1600. Is this correct?

Also, if I would install a 1600 module and overclock it to a higher frequency would I gain any performance? I figured that perhaps, against all odds, the overclocking itself would allow the mobo to accept a higher frequency.
Edited by ColtoM - 9/23/12 at 8:41pm
post #2 of 5
Higher frequency memory = higher performance. Really there is no "real world" difference past 1600mhz though. Benchmarks like SuperPi will benefit but for normal usage you're not going to be able to tell the difference. You get much more noticeable difference by overclocking the CPU.
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post #3 of 5
Thread Starter 
I understand that higher clock frequency will equal a higher performance if you juxtaposition two frequencies. However, it was more of a hypothetical question regarding the motherboard's supposed limits. Whether or not you'd actually notice a difference isn't what's interesting to me but whether or not you'd get any extra perfomance out of installing modules that have higher frequencies than the motherboard officially supports.

What I'm basically asking is: How do motherboards' RAM clock frequency limits (DIMM or RAM limits? Correct me if I'm wrong) interfere with performance gain?
post #4 of 5
Since the memory controller is on the processor, board doesn't play too much of a role in what you can do with the memory. Some boards allow for higher dividers, while most inexpensive boards may only let you go up to 1600mhz or so. Technically anything over 1333mhz is overclocking because Intel only offers 1333mhz support officially. So if you're buying any higher end motherboard, you're going to get dividers for 2133mhz or 2400mhz or possibly even higher. It doesn't come down to the board limiting you, it's the quality of the CPU's memory controller. Any board can set RAM voltage high, but you need a decent memory controller (and possibly an increase in the mem controller voltage- VCCIO, CPU VTT, QPI/DRAM voltage whatever it is called depending on generation and board) to run high memory frequencies.

Not sure if I'm explaining what I want to say, but basically motherboard does not interfere at all. You can buy any set of sticks and run them at any frequency you want, so long as DRAM voltage and timings, and memory controller voltage allow them to operate with stability. Step 1 is the memory itself is stable, step 2 is the memory controller can handle that high of a frequency. Also populating more slots or higher density sticks stress the CPU more. A lot of kits are underrated for what they can perform at, and some kits are even the same. EX: a manufacturer might sell a 1600mhz CAS 9 kit that is the same as a 1866mhz CAS 9 kit with higher voltage, or with looser timings at the same voltage as the 1600 kit.
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Beast
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Pixio PX277 Logitech G510 Seasonic SS-660XP2 Fractal Design R4 Blackout 
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Core 2 Duo T5250 @ 1.5ghz Dell 0N6705 Mobile Intel 965 Express 2 x 2GB Hyundai/Kingston DDR2 533mhz 
Hard DriveOptical DriveOSMonitor
OCZ Summit 60GB SSD Slot Load DVD-RW Windows 7 Ultimate x64 13.3 inch 1280x800 
CPUMotherboardGraphicsRAM
i5 2500k Asus P8Z68-V Pro MSI R7970 Lightning BE 2 x 4GB G.Skill Ripjaws 2133mhz 
Hard DriveOptical DriveCoolingOS
Mushkin Enhanced Chronos 240GB and WD Black 1TB Asus DRW-24B1ST Cooler Master Hyper 212 EVO Windows 7 Ultimate x64 
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post #5 of 5
Thread Starter 
Thank you. That clears up quite a few things.
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