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Which limits what memory I can use, motherboard or CPU?

post #1 of 3
Thread Starter 
As the question says, which one limits what kind of memory I use? I see mobos that say I can use ddr3 2133 and then a cpu would say up to ddr3 1333.

If I used that combination and I used ddr3 1600 Mhz would I have problems? Also, what other limitations besides memory should I keep an eye on?
post #2 of 3
Generally, most X79 MoBos support memory speeds of up to 2400MHz and even past that. It's not your MoBo that's being difficult, it's your CPU. Technically, he's set to run your RAM by default at 1600MHz, so if you want to see anything past that, you'll need to overclock it.
This is the case for most other CPUs and MoBos.

Other things to keep in mind: if you have a PS/2 keyboard: if or not there is a PS/2 connection at the I/O rear ports.
Are you planning an SLI/CrossFireX setup? Be sure that your MoBO 1) supports it, and 2) has enough PCI-E lanes.
Do you have lots of HDDs and would you like to continue to use them all? Be sure that your new MoBo has enough SATA connections then.
Still use IDE HDDs? Make sure your MoBo still has an IDE header. I know mine (ASUS Rampage IV Extreme) doesn't have one anymore.

That's all I can think of at the moment. smile.gif
 
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Hard DriveOptical DriveCoolingCooling
Crucial M4 512GB External optical drive Swiftech MCR420-QP 480 Radiator Yate Loon D12SL-12 1350RPM x15 
CoolingCoolingCoolingCooling
Alphacool VPP655 -T12 x2 Alphacool Repack - Dual Laing D5 - Dual 5,25 Ba... DangerDen Delrin 90° G1/4 connector EK-FB KIT RE4 - Acetal+Nickel EN 
CoolingCoolingCoolingCooling
EK-FC Bridge DUAL Parallel EK-FC7970 - Nickel EN Acetal x2 EK-FC7970 Backplate - Black x2 EK-VGA I/O bracket HD7970 x2 
CoolingCoolingOSMonitor
Feser Tube UV - HighFlow - 3/8 ID - 1/2 OD - BLACK Lamptron FC9 Fan Controller 4-channel 50W FC-9-... Windows 7 Ultimate x64 Samsung Syncmaster S27A750D x2 
MonitorMonitorKeyboardPower
IIYAMA G2773HDS-GB1 LG 37LF2500 Razer Blackwidow Ultimate Corsair AX1200W 
CaseMouseMouse PadAudio
Mountain Mods Ascension Razer Mamba Razer Goliathus Extended Control Edition ASUS ROG Phoebus 9.1 Soundcard 
AudioAudioOther
CM Storm Sirus 5.1 Headset Teufel Concept E 400 Digital Media 5.1 Surround... Canon MG6250 MultiFunctional Printer 
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i7 3930K C2 @4.7GHz ASUS Rampage IV Extreme/BF3 ASUS Radeon HD 7970 12GB Corsair Dominator 1600MHz memory 
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Crucial M4 128GB 7 TB External HDDs 2.2 TB HDDs in Raid0 Black Ice GT Stealth 360 
CoolingCoolingCoolingCooling
Swiftech Apogee HD 7x Yate Loon D12SL-12 XSPC X2O 750 Dual Bay Reservoir+Pump Phobya Nano-G 14 Silent Waterproof 140mm - 1000rpm 
CoolingCoolingOSMonitor
10MM (3/8) Compression Fitting Gripz Style - G1... PVC Tube 3/8 ID (10mm ID -13 mm OD ) - 2 meter ... Windows 7 Ultimate LG 37LF2500 
KeyboardPowerCaseMouse
Logitech G15 Corsair HW 750W Cooler Master Cosmos II Razer Naga 
Mouse PadAudioOtherOther
Steelseries SK Gaming Mouse Pad Creative HS 1200 NZXT 12x Red LED Sleeve - 1M NZXT 12x Red LED Sleeve - 1M 
OtherOtherOtherOther
BitFenix PCIe 6-Pin to 6-Pin Cable - 45 cm - Pr... BitFenix USB 2.0 internal extension - 30 cm - P... BitFenix PCIe 8-Pin to 8-Pin Cable - 45 cm - Pr... Sweex US011 4-poorts USB Hub 
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post #3 of 3
in your case the default speed for the CPU is 1333MHz but you can run faster RAM as dictated by your board.. in BIOS you can set you memory to an XMP profile if your referring to Intel platform and it will set the RAM to its specs, i.e 1600MHz thus you wont have a problem with 1600MHz RAM.. other ways is to manually set the RAM frequencies and Timings in your BIOS.. technically this is overclocking your RAM.. things to watch out for are keep you RAM at 1.5V is the standard but will handle 1.35V - 1.65V..

note: usually runing more sticks at >1.5V and fast RAM can put added stress on the CPUs IMC (Internal Memory Controller) but dont be alarmed it will not hurt your CPU if you stay within these limits smile.gif

[edit] adding to what was mentioned above me, if you plan to overclock, temperatures and voltages becarful of and read guides in the CPU section..

PSU has enough power
right socket, right CPU...

smile.gif
Edited by stubass - 5/7/12 at 2:03am
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Going to be chaep
(16 items)
 
Wife's Rig
(12 items)
 
 
CPUMotherboardGraphicsRAM
i7-3770k Gigabyte GA-Z77X-UP5 TH MSI GTX460 G.Skill TridentX 2400 2 x 4GB 
Hard DriveHard DriveOptical DriveCooling
Plextor M5p 128GB 2 x WD 500GB Blues LG Prolimatech Megahalems Rev C 
CoolingOSMonitorPower
Arctic F12 CO PWM x 2 Push/Pull Windows 7 64 bit Ultimate LG IPS235V Corsair AX850 
Case
Coolermaster HAF 912 advanced (Asia version) 
CPUMotherboardGraphicsRAM
I5-3570K Gigabyte Z68X-UD3H-B3 Inno3D Ichill GTX660 8GB G.Skill RipjawsX 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 830 128GB WD black 500GB Liteon Coolermaster Hyper 212+ EVO 
OSMonitorPowerCase
Win 7 ultimate Samsung Syncmaster 932gwe+ OCZ ZT series 550W Coolermaster 410 
CPUMotherboardRAMHard Drive
1.67Ghz Atom stock 1GB DDR2 2 x 500GB Western Digital Cavier Blacks [RAID 1] 
CoolingOSPowerCase
stock DSM3.2 [built on linux] stock stock 
OtherOther
Synology DX510 Expansion unit 5 x 1TB WD Cavier Blacks in a RAID 6 
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