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What's the max mem speed my mobo supports?

post #1 of 4
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Well, right now my mem is stock 800mhz(1600) @ 9-9-9-24, but on my mobo it says ddr 3 1666+ so does that mean i can OC it to anything above 1666?
post #2 of 4
It means that it natively supports 1066 and 1333 MHz memory, but it's capable of overclocking such memory up to 1666 MHz. Although, I don't know why there's a Plus sign there. Maybe it means you can maybe even go slightly past 1666 - I don't know. However, this is provided that your memory can do it.

So I guess what you're doing now is "overclocking" your 1600 MHz memory to 1600 MHz (even though this is not "overclocking" from the memory's perspective).
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #3 of 4
Generically speaking the speed of the RAM is limited by the memory controller in the CPU you use mostly and by the RAM itself.
The mobo BIOS or the motherboard PCB quality affects the maximum speed as well but in a lower ammount ,if the board is not made on a ship.
In your case your RAM and your CPU will limit you both.
To be able and increase memory speed you need
-quality RAM or RAM rated at higher than default speeds
-overclocking ablities on the mobo ,HTT ,HT Link Multiplier ,NB Speed and CPU Multiplier (if you have a BE CPU).And CPU NB voltage +RAM voltage as well.

To get the RAM higher you need to increase the HTT ,the multipliers and deviders will help you get over the default limit.You will need to readjust some parameters in case you modifie HTT to avoid unneeded overclocking.A non BE CPU may limit you here.
Edited by Dromihetes - 3/25/11 at 6:34pm
   
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post #4 of 4
1600Mhz via multipliers on 2 DIMMs (except with C2 rev on 4 DIMMs)
Anything above that depends on the processor IMC; the mobo has nearly nothing to do with memory support nowadays.
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