Would more/new RAM modules improve performance for Lightroom 5 (i7 4771, H87, Samsung 840 SSD, 12GB PC-10600 RAM)

[el_commandante]

Hey guys! I have a quick question.

I recently upgraded my machine to speed-up my Lightroom work. I mostly edit 22.1 mpix files from a Canon 5D Mark II on two 24" monitors and also do the usual daily stuff of course: browsing, office stuff, a Plex server streaming to a Chromecast etc.).

Here's what I've got currently:

• 
  ■ Coolermaster CM690 II Advance case
  ■ Asus H87-Pro
  ■ Coolermaster 212 Evo heatsink with one Noctua NF-F12 fan pulling air through the heatsink and out to the rear fan
  ■ Noctua NF-F12 rear exhaust fan
  ■ Noctual NF-A14 front intake fan
  ■ Intel i7 4771 (don't plan on OCing since I want to keep the machine cool, quiet and at lower power consumption)
  ■ 2x2gb A-DATA DDR3 CL9 PC-10666
  ■ 2x8gb Exceleram DDR3 CL9 PC-10666
  ■ 240 GB Samsung 840 SSD for OS, LR5 catalogs, preview and cache data
  ■ 1 TB Samsung 7200 rpm HDD
  ■ 1 TB WD 5400 HDD
  ■ 3 TB WD 5400 HDD
  ■ OS: Windows 8.1 Pro

Here are my questions:

• 
  ■ Is there anything I can do to dramatically increase performance and/or quiet and cool operation of the system?
  ■ Would replacing the RAM with 1600mhz modules (the max supported by my mobo) increase performance tangibly?
  ■ HDinfo reports that the RAM is running at 667mhz, although it's 1333mzh RAM. That's normal because of dual channel mode, right?
  ■ What do you think about my cooling config? Is there anything I can do to make the system cooler / quieter?

Thanks for the help in advance!


Here's the info from HWinfo:

Computer: ASUS All Series
CPU: Intel Core i7-4771 (Haswell-DT, C0)
3500 MHz (35.00x100.0) @ 798 MHz (8.00x99.8)
Motherboard: ASUS H87-PRO
Chipset: Intel H87 (Lynx Point)
Memory: 12288 MBytes @ 665 MHz, 9.0-9-9-24
- 2048 MB PC10600 DDR3 SDRAM - A-DATA Technology DDR3 1333+
- 4096 MB PC10600 DDR3 SDRAM - Unknown E30115B
- 2048 MB PC10600 DDR3 SDRAM - A-DATA Technology DDR3 1333+
- 4096 MB PC10600 DDR3 SDRAM - Unknown E30115B
Graphics: Intel Haswell-DT GT2 - Integrated Graphics Controller [AsusTek]
Intel HD Graphics 4600, 2112 MB
Drive: Samsung SSD 840 Series, 244.2 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive: WDC WD30EZRX-00D8PB0, 2930.3 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive: SAMSUNG HD103SJ, 976.8 GB, Serial ATA 3Gb/s
Drive: WDC WD10EADS-98M2B0, 976.8 GB, Serial ATA 1.5Gb/s
Sound: Intel Haswell - Mini HD Audio Controller
Sound: Intel Lynx Point PCH - High Definition Audio Controller [C2]
Network: RealTek Semiconductor RTL8168/8111 PCI-E Gigabit Ethernet NIC
OS: Microsoft Windows 8.1 Professional (x64) Build 9600

 

[el_commandante]

Nobody? Really? No heavy Lightroom users around?