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8 gigs of cas 7 latency or 12 gigs of cas 9 latency(cheaper)!!!!

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Memory Expert

What are you using the system for?
If just gaming, more than 4gb isn't needed, unless your on a triple channel intel board, in which case 6 is your number,
If its a working pc, editing,heavy applications etc then go for the bigger amount and tweak the timings yourself,
*edit, 7 is faster than 9 btw, lower numbers are faster
Moto
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Memory Master

You don't want that 12GB triple-channel RAM kit on a dual-channel 1155 mainboard. If you want 12GB, get one 2x4GB kit and one 2x2GB kit.

For gaming, 8GB is the optimal amount.

If you use Photoshop for a living, you might want 12GB. If it's a hobby or just something to do, then 8GB should suffice.

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Memory Master

I agree about not using any 3X__GB Kit on Sandy Bridge's Dual Channel. Most Photoshop projects even with a couple dozen layers and at high resolutions do fine with 8GB. If you're doing 'Production' then IMO it should be done on a WS MOBO + Xeon + ECC.

The item that will help the second most, beyond 8GB or 16GB of RAM, is the use of a fast 'scratch' SSD or use 16GB RAM plus a 'RAM Drive.'

As with any Rendering 'more is generally always better' meaning on Sandy Bridge + Photoshop the rendering times are primarily determined by the 'GB' more than the Frequency/CAS:
Cinebench R10 -> http://www.bit-tech.net/hardware/memory/2011/01/11/the-...
Image Editing -> http://www.bit-tech.net/hardware/memory/2011/01/11/the-...


8GB Kit 1600 CAS 8 F3-12800CL8D-8GBXM -> http://www.newegg.com/Product/Product.aspx?Item=N82E168...
16GB Kit 1600 CAS 9 CMZ16GX3M4A1600C9B -> http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Memory Master

SCREWING = $150 1.6v G.SKILL Sniper Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL7D-8GBSR

GOOD VALUE = $75 1.5v G.SKILL Sniper 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBSR

BTW (x2) of either set is 16GB :) 

IF you want 16GB:
1. $180 CORSAIR Vengeance 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMZ16GX3M4A1600C9B
2. $165 G.SKILL Ripjaws X Series 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9Q-16GBXL
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