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Need Help... RAM for Llano.... More sticks or less???

post #1 of 6
Thread Starter 
I am looking to get 8GB of corsair vengeance 1600mhz ram for my 3870k llano system. I accidentally ordered a corsair cx500 that came with a deal of $15 with vengeance 2x2gb 1600mhz sticks. I meant to get 2x4gb sticks. They dont offer the deal with 2x4gb... I was just going to order 2 more sticks of 2gb to have a total of 8gb.

Should I just get 2x2gb on top of what I already have being delivered??

Or should I return them for 2x4gb sticks?

I heard that it doesnt really matter but this is my first build with a APU so I dont know if it differs.

I would really like to hear some feedback on this if you have any information.

Thank you.
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CPUMotherboardRAMHard Drive
AMD Llano A8-3870k ASUS F1A75-M Pro FM1 uATX Corsair Vengeance Corsair Force 3 
Hard DriveOptical DriveCoolingOS
Hitachi ASUS DVD Burner Cooler Master Hyper TX3 Windows 7 Ultimate 64-bit 
MonitorKeyboardPowerCase
ASUS VE247H 24" 1080p Razer Lycosa Corsair CX500 Fractal Define Design R3 ATX 
Mouse
Razer DeathAdder 
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(13 items)
 
  
CPUMotherboardRAMHard Drive
AMD Llano A8-3870k ASUS F1A75-M Pro FM1 uATX Corsair Vengeance Corsair Force 3 
Hard DriveOptical DriveCoolingOS
Hitachi ASUS DVD Burner Cooler Master Hyper TX3 Windows 7 Ultimate 64-bit 
MonitorKeyboardPowerCase
ASUS VE247H 24" 1080p Razer Lycosa Corsair CX500 Fractal Define Design R3 ATX 
Mouse
Razer DeathAdder 
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post #2 of 6
I would recomend 2x 4GB. as four DIMMs takes more time for the memory controller to access and places more of a strain on it. If you plan to OC, then two DIMMs always seems to be better than four. I can also tell you that RAM OC'ing on an AMD APU makes a nice improvement in system performance because both the CPU and GPU benefit.

Also mixing of RAM - even the exact part number, may not run at the advertised speed unless you buy it as one, tested RAM kit - per Corsair.
post #3 of 6

There shouldn't be anything wrong of having 4x2GB of the same kit with the same speed, voltage, and timings considering in the end it may cost you less for the total setup and take you less time as opposed to taking on a 2x4GB kit and attempting to sell off the 2x2GB kit.  The Llano APU's IMC is improved upon Phenom II and should have no problems handling 4 DIMMs of DDR3 at 1600Mhz.

Having four DIMMs doesn't necessarily affect your CPU OC capability as long as the all the DMMs have already been proven to work at that particular speed.  There is no link between the RAM multiplier and DIMM amount with the height potential of your CPU multiplier.

 

Taking the 2x DIMM setup opens up a possibility for 4 DIMMs but considering the average modern computer user will not even make full use of 4GB of DDR3 (so you may want to reconsider going with 8GB in any case unless you are doing anything memory-intensive, i.e. editing video or playing BF3) that should not be prioritized as an utmost issue of any sort.


Edited by xd_1771 - 2/6/12 at 6:11pm
post #4 of 6
As with every thread on this subject... we go thru the same issues and according to AMD, two DIMMs are preferred over four DIMMs if you are OC'ing.

At the default RAM frequency One, proper matched (4) DIMM RAM Kit should operate just fine. Two RAM kits however of the same part number may NOT operate at the advertised frequency or latencies - per Corsair, because the ratings are only for the two DIMM RAM Kit, not for four DIMMs.
post #5 of 6
Thread Starter 
Quote:
Originally Posted by AMD4ME View Post

As with every thread on this subject... we go thru the same issues and according to AMD, two DIMMs are preferred over four DIMMs if you are OC'ing.
At the default RAM frequency One, proper matched (4) DIMM RAM Kit should operate just fine. Two RAM kits however of the same part number may NOT operate at the advertised frequency or latencies - per Corsair, because the ratings are only for the two DIMM RAM Kit, not for four DIMMs.

I already have the 4 x 2gb sticks on the way so I guess if I cant get all four of them to 1866Mhz then I will return for 2 x 4gb kit. I dont think I will have any problem getting them to 1866Mhz though. I talked to AMD, Corsair and ASUS and they said I shouldnt have any problems getting 4 1600dimms to 1866 with F1A75-M Pro board using 3870k. We'll see. IF it doesnt work out then I will exchange for 2x 4gb. I am not concerned about upgrading to more than 8gb ram so thats not an issue for me otherwise I would defintely go 2 x 4gb.
FUSION
(13 items)
 
  
CPUMotherboardRAMHard Drive
AMD Llano A8-3870k ASUS F1A75-M Pro FM1 uATX Corsair Vengeance Corsair Force 3 
Hard DriveOptical DriveCoolingOS
Hitachi ASUS DVD Burner Cooler Master Hyper TX3 Windows 7 Ultimate 64-bit 
MonitorKeyboardPowerCase
ASUS VE247H 24" 1080p Razer Lycosa Corsair CX500 Fractal Define Design R3 ATX 
Mouse
Razer DeathAdder 
  hide details  
Reply
FUSION
(13 items)
 
  
CPUMotherboardRAMHard Drive
AMD Llano A8-3870k ASUS F1A75-M Pro FM1 uATX Corsair Vengeance Corsair Force 3 
Hard DriveOptical DriveCoolingOS
Hitachi ASUS DVD Burner Cooler Master Hyper TX3 Windows 7 Ultimate 64-bit 
MonitorKeyboardPowerCase
ASUS VE247H 24" 1080p Razer Lycosa Corsair CX500 Fractal Define Design R3 ATX 
Mouse
Razer DeathAdder 
  hide details  
Reply
post #6 of 6
Quote:
Originally Posted by mikezachlowe2004 View Post

I already have the 4 x 2gb sticks on the way so I guess if I cant get all four of them to 1866Mhz then I will return for 2 x 4gb kit. I dont think I will have any problem getting them to 1866Mhz though. I talked to AMD, Corsair and ASUS and they said I shouldnt have any problems getting 4 1600dimms to 1866 with F1A75-M Pro board using 3870k. We'll see. IF it doesnt work out then I will exchange for 2x 4gb. I am not concerned about upgrading to more than 8gb ram so thats not an issue for me otherwise I would defintely go 2 x 4gb.

Whatever works, works. I'm just relaying info. directly from the sources: AMD and Corsair. Hopefully you won't have any issues. thumb.gif
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