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installing new ram

post #1 of 5
Thread Starter 
I have 4gb ram installed (2x2gb) i just bought 8gb of the same brand, same specs.
I want to clarify how to install them.
Right now my 4gb occupies the right side set of slots which are blue. According to the manual i downloaded its a1, b1.
Do i put the 8gb in a2, b2? Or is it better to move the 4gb over to a2,b2 and put the 8gb in a1,b1.
Or have i got it completely wrong and it needs to be a1,a2 and b1,b2. If so which should iput in a and b.

Sorry if thats a bit confusing with all the a's and b's and 123's
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1st DIY PC
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CPUMotherboardGraphicsRAM
phenom ii 965 asus hd 5770 vapor x 4gb 
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1tb 1 dvd-rw noctua u12p windows 7 
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32in bush tv wireless antec coolermaster centurion 5ii 
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post #2 of 5
2Gb on A1 (blue)
2Gb on A2 (black)
4Gb on B1 (blue)
4Gb on B2 (black)

or

4Gb on A1 (blue)
4Gb on A2 (black)
2Gb on B1 (blue)
2Gb on B2 (black)

shouldn't really matter which one of these two configs.
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My PC
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Wife's PC
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CPUMotherboardGraphicsRAM
Core i5 4460 AsRock H81M-DG4 Sapphire Rx470 Platinum KVR 1600 16Gb 
Hard DriveHard DriveCoolingOS
2x Seagate 3Tb Samsung 850 EVO 120 Scythe Ninja 3 Rev.B Windows 10 Pro 
MonitorKeyboardPowerCase
Fujitsu Siemens A17-2A Logitech K280e SuperFlower SF-550K12XP Thermaltake Versa H25 
MouseAudio
Logitech G402 Sony MDR XD150 
CPUMotherboardGraphicsRAM
Athlon 750K 4.0Ghz AsRock FM2A75 Pro4+ Sapphire R9 270X Dual-X Kingston 2x4Gb 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 120  Western Digital 320Gb LiteON DVD-RW CoolerMaster Hyper Z600 
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post #3 of 5
Quote:
Originally Posted by elitestranger View Post

Do i put the 8gb in a2, b2? Or is it better to move the 4gb over to a2,b2 and put the 8gb in a1,b1.
]

First off, you should always buy all the memory you're going to use in a "Matched set".
(And that's not multiple matched sets!). Memory manufacturers frequently, and seemingly randomly, change the ICs (the large black rectangles on the memory board) they use. The "specs" may be the same, but the complete set of timings (there are 31, not just 4 or 5) will always be different. If you're not going to overclock it's kind of a moot point though.

As for the above quoted question, it probably doesn't matter. The BIOS will read the SPD specs from the stick in the slot closest to the memory controller, and apply those timings to all the memory.
So, performance wise, it doesn't matter. If you run into a compatibility issue you can try reversing them.

You can use Thiaphoon Burner to look at pretty much all timings. But be forewarned, it's not for the faint of heart!
Edited by billbartuska - 10/24/13 at 4:53am
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
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post #4 of 5
Thread Starter 
Im aware its not recommended to use 2 different kits but it works and ram prices are sky high so it will do for now.

Thx ronin for your answer, figured that was the way it went, just wasnt sure. Dont know why i originally put them in wrong
1st DIY PC
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CPUMotherboardGraphicsRAM
phenom ii 965 asus hd 5770 vapor x 4gb 
Hard DriveOptical DriveCoolingOS
1tb 1 dvd-rw noctua u12p windows 7 
MonitorKeyboardPowerCase
32in bush tv wireless antec coolermaster centurion 5ii 
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1st DIY PC
(14 items)
 
  
CPUMotherboardGraphicsRAM
phenom ii 965 asus hd 5770 vapor x 4gb 
Hard DriveOptical DriveCoolingOS
1tb 1 dvd-rw noctua u12p windows 7 
MonitorKeyboardPowerCase
32in bush tv wireless antec coolermaster centurion 5ii 
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post #5 of 5
Quote:
Originally Posted by elitestranger View Post

and ram prices are sky high so it will do for now.

Actually they're outrageously low.

I once paid $379 (retail) for two 512mb sticks of DDR400. Granted it was the fastest memory on the planet at the time, but that would make you 8 gigs worth over $3000!
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
  hide details  
Reply
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
  hide details  
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