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Added 8GB for total 16GB - some questions - different voltages

post #1 of 5
Thread Starter 
Hey folks.

I read/research a lot. First time asking a personal question. Thanks for any help. I enjoy knowledgebase.

Built a rig about 8 months ago. Over Christmas, I made a rush purchase of 8GB (2x4gb) RAM to add to my current 8GB (2x4gb) RAM for a total of 16 GB. I only play games so judging from other posts, it's not really necessary. I'm not sure why I did it.

FX-8150 CPU
Gigabyte 970A-D3 MB
Radeon HD 6850
ADATA 1.5V CL9 2x4GB (http://www.memory4less.com/m4l_itemdetail.aspx?itemid=1445708585&partno=AD3U1333C4G9-B)
And I bought Kingston HyperX 1.65V CL9 2x4GB (http://www.kingston.com/datasheets/KHX1333C7AD3K2_8G.pdf)

I'm a bit wary of the different voltages between the two sets. And I did recently experience some computer shut-offs (not freezes or BSOD, just shutoff like it lost power) in the past couple weeks.


I did a Memtest (Original version) and it hangs and the computer freezes within a minute. I plan on trying a memtest+ tonight.

I just have my BIOS doing stock SPD timings/voltages atm. Is there anything I should change manually?
post #2 of 5
Well if you are going to mix match ram. You need to get the voltage/speed/timing the same or you will have problems like the one you are having now.
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HTPC
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CPUMotherboardRAMHard Drive
AMD A-3870K AsRock A75 Pro (FM1) HyperX DDR3 1866 8 GB SAMSUNG 830 256gb 
Hard DriveOptical DriveCoolingOS
SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
MonitorPowerCase
LG M2762D-PM Glossy Black 27" 5ms (1920x1080) Antec HG 900 Gerenic ATX Case 
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post #3 of 5
Thread Starter 
Quote:
Originally Posted by dixson01974 View Post

Well if you are going to mix match ram. You need to get the voltage/speed/timing the same or you will have problems like the one you are having now.


Right.....



Excuse my ignorance, but isn't the 'auto' in the BIOS doing just that? Making it all the same? Seems to be defaulting to 9-9-9-24 at 1.51 Volt.


So I would assume it has to be the *working* voltage/speed/timing and same by default. Finding that working voltage/speed/timing is what I'm after I suppose. Or can I run different slots at different voltage/speed/timing? That's crazy. That doesn't seem stable at all.
Edited by soccercake7 - 1/4/13 at 12:54pm
post #4 of 5
The HyperX modules should default to CAS9 at 1.5V, which will be the same for your A-Data modules. All your RAM modules will run at whatever speed/timings you specify. The "auto" setting simply reads the JEDEC standard values of your modules, which is 1333MHz CAS9 @ 1.5V. The HyperX sticks are simply able to safely run at lower timings with the increased voltage.
Edited by Melcar - 1/4/13 at 1:40pm
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Magicbox
(17 items)
 
crapbox
(13 items)
 
 
CPUMotherboardGraphicsRAM
FX 8320 Sabertooth 990FX Nitro+ RX480 Kingston HyperX Fury 
Hard DriveHard DriveHard DriveCooling
Samsung 850 EVO  Kingston HyperX 3K Seagate Barracuda 7200.14 Noctua NH-D15 
OSOSMonitorKeyboard
Kubuntu  Windows 10 Pro Dell U2515H CM Quickfire TK (Cherry Blue) 
PowerCaseMouseMouse Pad
Cooler Master Silent Pro M 850W Enthoo Pro Logitech G502 Logitech G440 
Audio
Xonar DX 
CPUMotherboardGraphicsRAM
Sempron 3300+ HP stock mobo (laptop) 200M (IGP) 2x1GB PC3200 
Hard DriveOptical DriveOSMonitor
100GB ATA133 DVD/CDRW Kubuntu 32 bit 14.1" (1280x768) 
Power
6 cell 
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post #5 of 5

Mixing generic modules with performance modules is a waste especially given that there is only one way to use more than 8GB of RAM and that is if you run VMs. Just keep the enhanced performance set. Mixing RAM is already hard enough, I recommend it only be done with kits of matching speed, timings and voltage.

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