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Difference between 16GB DDR3-2133 RAM vs. 64GB DDR3-2133 RAM?

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June 27, 2013 5:06:48 AM

Hi, this is my newly built setup:

/*
CPU: Intel Core i7-3930K 3.2GHz 6-Core Processor
Motherboard: Asus Rampage IV Extreme EATX LGA2011 Motherboard
Memory: Corsair Dominator Platinum 16GB (4 x 4GB) DDR3-2133 Memory
Storage: Samsung 830 Series 128GB 2.5" Solid State Disk
Video Card: EVGA GeForce GTX 680 2GB Video Card (3-Way SLI)
Video Card: EVGA GeForce GTX 680 2GB Video Card (3-Way SLI)
Video Card: EVGA GeForce GTX 680 2GB Video Card (3-Way SLI)
Power Supply: Cooler Master Silent Pro Gold 1200W 80 PLUS Gold Certified ATX12V / EPS12V
Optical Drive: ASUS DVD/CD Writer
Operating System: Microsoft Windows 7 Ultimate Full (32/64-bit)
Case: LD PC-V8 ATX/HPTX White
Other: Swiftech MCR420-XP eXtreme Performance Quad 120mm
Other: Black Ice GTX Xtreme 360 Radiator
Other: Alphacool VPP655 Variable Speed Pump - HF Top Edition
Other: Bitspower Water Tank Z-Multi 150 Inline Reservoir - Ice Black
Other: 7x Scythe Gentle Typhoon 1850RPM Fans
Other: Lamptron 20W - 4 Channel Aluminum Rheobus w/ Multi Color LED Display
Other: HEATKILLER® GPU-X³ GTX 680 Water Block
Other: MIPS ICEFORCE HF Liquid Cooling CPU Block - Socket LGA 2011
*/

I run memory-intensive applications, several windows of Chrome (each with 40+ tabs), leave PDFs and numerous Office suite applications on, might be downloading, watching shows or movies, running statistical analysis software to import, load, transform and query massive amounts of data.

For example, I might be running Photoshop CS6 with 10 projects open, each at 300dpi. Chrome might have 10 instances, each with 50 tabs. I could also be logged into a remote desktop connection, transferring files and editing databases. Would have multiple instances of Microsoft Excel, Word, Powerpoint, Adobe PDFs, other browsers, a torrenting application, Solidworks for industrial design, music, Dropbox, and more. I don't like to close things.

My question is, what the difference between 16GB (4x$) DDR3-2133 RAM vs. 64GB (8x8) DDR3-2133 RAM? Also, what is the difference between 64GB DDR3-2133 vs. 64GB at 2400, or higher. What are the pros and cons? How much of a difference does that 64GB RAM make?
June 27, 2013 5:17:53 AM

IF this is all true, then I would suggest saving yourself a lot of money and adjusting your working practices.
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June 27, 2013 5:33:10 AM

if your 16gb ram is 100% occupied with all your running applications, and you want more applications to run... then yes go for more. 32... 64...
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June 27, 2013 6:24:40 AM

Most of your applications are relatively minor in terms of memory footprint.

Since you are already running all that stuff at the same time, simply take a look at how much RAM and swap are actually in-use. I tend to leave everything open, run a handful of somewhat memory-hungry programs and 16GB was a snug fit with 1-2GB of stuff landing in the swapfile when all RAM is in use. Because I do a lot of tabbing, the HDD lag from swapping pages gets quite annoying so I upgraded to 32GB to get rid of it and that leaves me with 10-15GB available for disk cache.

For a heavy multitasker, 16GB to 32GB should make a noticeable difference when tabbing a lot but not so sure about 32 to 64GB. You really need to look at how much real RAM usage your heaviest applications actually add up to.
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June 27, 2013 10:28:42 PM

Thanks for the more detailed reply. I love multitasking to the max, and find it inconvenient to close and reopen files and applications. I'll probably upgrade to the 64GB eventually. I just can't deal with the lag when one's operating at full or over-capacity.


InvalidError said:
Most of your applications are relatively minor in terms of memory footprint.

Since you are already running all that stuff at the same time, simply take a look at how much RAM and swap are actually in-use. I tend to leave everything open, run a handful of somewhat memory-hungry programs and 16GB was a snug fit with 1-2GB of stuff landing in the swapfile when all RAM is in use. Because I do a lot of tabbing, the HDD lag from swapping pages gets quite annoying so I upgraded to 32GB to get rid of it and that leaves me with 10-15GB available for disk cache.

For a heavy multitasker, 16GB to 32GB should make a noticeable difference when tabbing a lot but not so sure about 32 to 64GB. You really need to look at how much real RAM usage your heaviest applications actually add up to.


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