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View Full Version : G74SX-BBK9 and 1600MHz Ram



Srkrono
02-22-2012, 04:49 AM
i was wondering how i could make my notebook run at 1600MHz instead of 1333MHz?

fostert
02-23-2012, 03:34 AM
Kingston makes HyperX Plug-n-Play 1600MHz DDR3 RAM with "automatic" overclock SPD settings that are supposed to be read by your BIOS and thus your memory controller. They also come in 1866MHz speeds. Corsair makes the same stuff with slightly better (faster) timings than the Kingston in their Vengeance line for notebooks (e.g. http://www.corsair.com/memory-by-product-family/vengeance/vengeance-8gb-high-performance-sodimm-memory-upgrade-kit-cmsx8gx3m2a1866c10.html): again with "plug-n-Play" automatic overclocking of the memory controller to 1600 or 1866MHz. You have no choice but to try this "PnP" stuff as the G74 BIOS has no functionality to manually overclock the IMC to the rated speed of the RAM you stick in it, mores the pity.

In the G74 it has been observed that 2x4GB=8GB of the 1866MHz Kingston stuff works at full speed, while filling all four banks with it (for 16GB) causes the memory controller to "downclock" to stock 1333 MHz speeds. We suspect its a BIOS problem with the G74. However, folks around here have gotten 4x4GB=16GB of the 1600 MHz stuff to work fine in the G74.

Srkrono
03-23-2012, 04:35 AM
damn :(

i orginally bought an Alienware M17X-R3

and i bought some corsair vengence 1600MHz ram and in that laptop it ran at 1600MHZ but i ended up taking it back and swapping it for this laptop so i kept my SSD and the ram and now i have 16gb of $100 ram lol

hoping to sell this ram and replace it with the Hyper-X

tWiCeAsfLyOhMy
03-23-2012, 05:19 PM
Unless you do some sort of video editing/coding 16 GB of ram is absolutely over kill. If you're just gaming you don't needmore than 8GB of ram. Anything more than 8GB is a placebo effect.

fostert
03-24-2012, 12:45 AM
More like a real comfort zone rather than a placebo (which implies no benefits whatsoever)...16GB will prevent you from swapping should you ever spill over 8GB, but agreed thats not too often for regular use.