I have a system that I built running Win 7 Pro 64-bit with an AMD Phenom II x6 1100T BE on a MSI NF980-G65 motherboard with 32G of matched DDR3 memory (4x8G). I have not physically touched this configuration (except for installing a second GTX660 SC for SLI) in two years. In this time, I have rarely used more than 12G of memory.
I was talking to someone at the local PC shop the other day and the topic of memory config came up. He mentioned that, since I had rarely used more than 12G of memory, it might be a good idea to swap chips from the 'unused' DIMM slots (3 & 4) to the used slots (1 & 2) to 'use' those 'fresh' chips.
Is it a good idea to swap memory chips (keeping the 'matched' chips together)?
Unless there was a problem with a memtest RZN I cannot think of any reason and using 12GB at one time I think is one heck of a lot of memory in use. I think most get by on 8GB unless it is very heavy gaming I suppose.
You could try asking on a specialized forum like the G Skill one Tradesman might have an idea of what you want to know Welcome to the G.SKILL TECH FORUM
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Own build (new) Desk1 / Asus ROG Win 7 / Desk2 1st build
OS
Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10
One other Desktop (tester) and spare Toshba laptop both with SSD's
Running Kaspersky 2016 ISS on all machines config'd identically
Logitec audio stereo systems on each machine (x3)
Canon MG5250MFC
Router/modem TP-Link running WPA2SK
I see no point in rotating memory chips. The downside being that you might damage something in the process. And even if you only use 12 GB memory at any time with the rest being free you can't assume it is always the same chips being used.
I agree, it's unnecessary. Windows 7 randomizes memory any way as a deterrent for malware and will use all that's available. You can't "see" the memory being used but it is. Just because the most you've used is 12GB doesn't mean that the first 12GB was used. It could have been spread all over the modules.
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Built 2/11/2011
OS
Windows 7 Pro-x64
CPU
i7-2600 3.4GHz - 3.8GHz Turbo
Motherboard
Intel DH67BL-B3
Memory
8Gb - 2x4GB, Muskin 991770 PC3-1333
Graphics Card(s)
Integrated Intel HD 2000
Sound Card
Integrated Intel 10.1 HD, RealTek ALC892
Monitor(s) Displays
Asus LCD VH222H, Haier HL24XSL2a
Screen Resolution
1920x1080, 1920x1080
Hard Drives
Crucial SSD C300-128Gb,
Western Digital WD5002AALX - 500Gb,
Western Digital WD7501AALS - 750Gb
PSU
Seasonic 650W 80+ Gold Modular
Case
Rosewill Defender
Cooling
Stock CPU, Four 120mm case fans, PCH fan added
Keyboard
Logitech EX100 Y-RBH94 Wireless
Mouse
Logitech EX100 M-RCE95 Wireless
Internet Speed
3.0/1.5 Mbs
Antivirus
Microsoft Security Essentials
Browser
Microsoft Internet Explorer 11
Other Info
Antec Veris Premier-Multimedia IR Station,
Cyber Accoustics-3602 Speakers,
AFT XM-5U Card Reader,
Hauppauge TV-HVR-2250,
Sony LX300 USB Turntable