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DDR3 memory question

post #1 of 8
Thread Starter 
Hello all,

So i am building my new rig,and i have a question about DDR3 memory and how it operates...

I am planning to use this board:
ASUS Rampage III Extreme LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard

If i get 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 2000 (PC3 16000) memory, at what speed will each stick run at? Will my board support it?
post #2 of 8
Operating memory at 2000 MHz is technically overclocking your motherboard so it's not 100% guaranteed. However, with the right BIOS settings and the right memory sticks, it shouldn't be much of a problem.

Each stick will run at the speed you set. Memory speed is a product of the reference clock (BCLK) times the memory multiplier. Depending on the motherboard, you will have 6x, 8x, 10x, 12x, and maybe even 14x memory multipliers available. So if your BCLK is at the stock 133 MHz and you run a 10x memory multiplier, the memory will run at 1333 MHz. Now if you bump that up to 200 MHz BCLK and use the same 10x memory multiplier, the memory will run at 2000 MHz. If you want to bump the memory multiplier to 12x, you can still achieve 2000 MHz memory by setting the BCLK to 166 MHz. You have many options available to run the memory at whatever speed you want by adjusting the BCLK and/or the memory multiplier. However, keep in mind that adjusting the BCLK will also affect your CPU speed so depending on how comfortable you are with overclocking your CPU, that may or may not be something you want to do.
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Intel Core i7 6850K ASUS X99-A II EVGA GTX 1080 SC ACX 3.0 G.Skill Ripjaws 4 DDR4-2666 32GB (4x8GB) 
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Gaming Rig
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CPUMotherboardGraphicsRAM
Intel Core i7 6850K ASUS X99-A II EVGA GTX 1080 SC ACX 3.0 G.Skill Ripjaws 4 DDR4-2666 32GB (4x8GB) 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 950 Pro M.2 SSD Samsung 840 Pro SATA SSD WD Black 4TB HDD ASUS CD/DVD-RW 
CoolingOSMonitorMonitor
Corsair H115 Windows 10 Home x64 LG 34UC97 Dell U2713HM 
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Roccat Ryos MK FX Corsair AX1200i Corsair 780T Roccat Nyth 
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post #3 of 8
Thread Starter 
I just read a post on newegg from Gskill tech support, that with i7.. 6GB (3x2GB) 1600mhz sets will have only 1 stick running at 1600mhz on stock settings and the other 2 at 1333mhz. He said that you need to perchase 1800mhz or 1866mhz toget 1600mhz on stock settings...
post #4 of 8
Quote:
Originally Posted by Rubashka View Post
I just read a post on newegg from Gskill tech support, that with i7.. 6GB (3x2GB) 1600mhz sets will have only 1 stick running at 1600mhz on stock settings and the other 2 at 1333mhz. He said that you need to perchase 1800mhz or 1866mhz toget 1600mhz on stock settings...
Do you have a link to that comment from G.Skill tech support? Memory speed is the same for all sticks and is always BCLK*memory multiplier. If you set it to 1600 MHz, all three sticks will run at 1600 MHz. Memory speed never varies from one stick to another if they're installed in the same system.

If the sticks don't run at their advertised speeds at the manufacturer's recommended settings, that is grounds for an RMA. However, since you are overclocking your RAM, you may need to bump your VTT to get your CPU's memory controller to operate properly at that speed.
Edited by dkim1359 - 6/8/10 at 2:05pm
Gaming Rig
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CPUMotherboardGraphicsRAM
Intel Core i7 6850K ASUS X99-A II EVGA GTX 1080 SC ACX 3.0 G.Skill Ripjaws 4 DDR4-2666 32GB (4x8GB) 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 950 Pro M.2 SSD Samsung 840 Pro SATA SSD WD Black 4TB HDD ASUS CD/DVD-RW 
CoolingOSMonitorMonitor
Corsair H115 Windows 10 Home x64 LG 34UC97 Dell U2713HM 
KeyboardPowerCaseMouse
Roccat Ryos MK FX Corsair AX1200i Corsair 780T Roccat Nyth 
Audio
Creative Sound Blaster ZxR 
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Gaming Rig
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 6850K ASUS X99-A II EVGA GTX 1080 SC ACX 3.0 G.Skill Ripjaws 4 DDR4-2666 32GB (4x8GB) 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 950 Pro M.2 SSD Samsung 840 Pro SATA SSD WD Black 4TB HDD ASUS CD/DVD-RW 
CoolingOSMonitorMonitor
Corsair H115 Windows 10 Home x64 LG 34UC97 Dell U2713HM 
KeyboardPowerCaseMouse
Roccat Ryos MK FX Corsair AX1200i Corsair 780T Roccat Nyth 
Audio
Creative Sound Blaster ZxR 
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post #5 of 8
Thread Starter 
post #6 of 8
Quote:
Originally Posted by Rubashka View Post
The issues were caused by trying to use memory designed for Intel platforms on AMD systems. Since you are considering an X58 (Intel) platform, you will not have those issues. I'm not sure what the differences are that would limit memory overclockability between Intel/AMD motherboards, but it seems most (if not all) of the issues arise from using this RAM on an AMD motherboard. The RAM specifications clearly state that it was "Specifically Designed to compatible with Intel Core i5 and Core i7 for Intel P55 motherboard"
Gaming Rig
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 6850K ASUS X99-A II EVGA GTX 1080 SC ACX 3.0 G.Skill Ripjaws 4 DDR4-2666 32GB (4x8GB) 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 950 Pro M.2 SSD Samsung 840 Pro SATA SSD WD Black 4TB HDD ASUS CD/DVD-RW 
CoolingOSMonitorMonitor
Corsair H115 Windows 10 Home x64 LG 34UC97 Dell U2713HM 
KeyboardPowerCaseMouse
Roccat Ryos MK FX Corsair AX1200i Corsair 780T Roccat Nyth 
Audio
Creative Sound Blaster ZxR 
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Gaming Rig
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 6850K ASUS X99-A II EVGA GTX 1080 SC ACX 3.0 G.Skill Ripjaws 4 DDR4-2666 32GB (4x8GB) 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 950 Pro M.2 SSD Samsung 840 Pro SATA SSD WD Black 4TB HDD ASUS CD/DVD-RW 
CoolingOSMonitorMonitor
Corsair H115 Windows 10 Home x64 LG 34UC97 Dell U2713HM 
KeyboardPowerCaseMouse
Roccat Ryos MK FX Corsair AX1200i Corsair 780T Roccat Nyth 
Audio
Creative Sound Blaster ZxR 
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post #7 of 8
Also, I noticed that you linked a 2x2GB set. Is there an equivalent 3x2GB set that you plan to use with the R3E? The R3E is an X58 system with an LGA1366 socket, which is different than a P55 system with an LGA1156 socket. I'm fairly certain it wouldn't be a problem to use a 4GB set of this ram in an X58 board, but you would be missing out on 2GB of RAM and running in dual channel as opposed to triple channel that the X58 is capable of.
Edited by dkim1359 - 6/8/10 at 2:19pm
Gaming Rig
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 6850K ASUS X99-A II EVGA GTX 1080 SC ACX 3.0 G.Skill Ripjaws 4 DDR4-2666 32GB (4x8GB) 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 950 Pro M.2 SSD Samsung 840 Pro SATA SSD WD Black 4TB HDD ASUS CD/DVD-RW 
CoolingOSMonitorMonitor
Corsair H115 Windows 10 Home x64 LG 34UC97 Dell U2713HM 
KeyboardPowerCaseMouse
Roccat Ryos MK FX Corsair AX1200i Corsair 780T Roccat Nyth 
Audio
Creative Sound Blaster ZxR 
  hide details  
Reply
Gaming Rig
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 6850K ASUS X99-A II EVGA GTX 1080 SC ACX 3.0 G.Skill Ripjaws 4 DDR4-2666 32GB (4x8GB) 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 950 Pro M.2 SSD Samsung 840 Pro SATA SSD WD Black 4TB HDD ASUS CD/DVD-RW 
CoolingOSMonitorMonitor
Corsair H115 Windows 10 Home x64 LG 34UC97 Dell U2713HM 
KeyboardPowerCaseMouse
Roccat Ryos MK FX Corsair AX1200i Corsair 780T Roccat Nyth 
Audio
Creative Sound Blaster ZxR 
  hide details  
Reply
post #8 of 8
Thread Starter 
K ill do more research, thanks guys
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