Help in choosing compatible RAM for oldish mobo

kghastie

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I'd like to upgrade my RAM to at least 6GB (but sounds like I might as well just go up to 8). I have my (first) homebuilt machine with a mobo from 3 years ago, and I'd like to be sure my RAM is compatible with the board and with my current RAM (unless I get all new RAM).

My Machine
- 2x2 Patriot G-Series Sector 5 DDR3 PC3-10666 1333MHz (PGV34G1333ELK) 9-9-9-24 | 1.65V
- Gigabyte GA-P55A-UD3 (rev. 1) (4 x 1.5V DDR3 DIMM sockets up to 16 GB, dual-channel, DDR3 2200/1600/1333/1066/800 MHz, supports non-ECC/XMP
- Intel i7-860
- Windows 8

I also have a pair of 1GB sticks of unknown quality from a friend that I could use:
- Aeneon 1GB PC3-8500 DDR3-1066MHz DIMM Memory Module Mfr P/N (AEH760UD00-10FA98X) 7-7-7-24 | 1.5V

So the options as I see it are here, in order of preference. Stability/performance is really the number one goal, although I don't overclock or do anything exciting, so I'm not concerned about performance differences under, say, 10%.

Option 1 - Mix Aeneon and Patriot
Since I already have the two 1GB sticks, that's probably my preference, since it's free. But will I have compatibility issues with either the 2x2 RAM or the mobo, or do these sticks suck (it is hard to find an official link for them)? Does it hurt to try this? Do the timing/speed differences matter? Will I be able to use XMP settings so I don't have to be smart?

Option 2 - Add 2-4GB to the Patriot RAM
Unfortunately the Patriot RAM is out of stock, and the Gigabyte Memory Compatibility List has not been updated since before I bought the board (2009). It also has no 2x4GB kits tested. (Note that the Patriot memory I have currently isn't listed on the compatibility list, but I was told by Patriot that it was "the correct memory.") But is there a 2 or 4GB kit out there I could safely add?

Option 3 - Get 6-8 new GB
Most expensive option, but might be the least complicated, although what brand/model should I go with?

Any advice?

Note that I am unclear on whether speeds will make any difference (sounds like not), so the prices that I have seen are about $40-50 for a 2x2 kit or $70-80 for a 2x4 kit).

Thanks in advance!
 
Solution
Hello... mixing ram speed will only allow you to run at the lowest speed setting PC3-8500, or DDR1066... Make sure you get the ram into the correct slots for each pair to run in Dual Mode... your computer memory setting, in the Bios, should be set to AUTO, and saved before installing Option 1... give it a try and see what you think of the results, before going to another option.
Hello... mixing ram speed will only allow you to run at the lowest speed setting PC3-8500, or DDR1066... Make sure you get the ram into the correct slots for each pair to run in Dual Mode... your computer memory setting, in the Bios, should be set to AUTO, and saved before installing Option 1... give it a try and see what you think of the results, before going to another option.
 
Solution

kghastie

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Thanks both. From reading, it sounds like I wouldn't see a noticeable difference in speed with 1333 vs 1600 (which is not what we are talking about, but it's what all the posts I've seen discuss). I assume the same is true for 1333 vs 1066? I don't want to start a war here, so I'm asking from a non-OC'ers point of view, again concerned with differences of >= 10%.
 

robert super

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option 1 is very bad idea first if you use memory with two speeds mobo will use the lower speed for all memory banks second are you sure that memory arent damaged? memtest+ only that memory remove patriots use memory from different company can be problematic and here is random electric 1.65 us 1.5 never use memory if they havent the same i saw memory from the same maker in two series old 1.5 and new 1.65 and they dont work in the same machine
aboat timing you patriots cant work with 7-7-7-24 for sure maybe if you manually set 9-9-9-24 on aeneons that can be work but im not sure but all memory must be set to 1066
option 2
if you find memory with 9-9-9-24 1.65 v 1333 from other company they should work with old memory the best if they on compatybility list but not necesary if you patriots work fine
max mobo 16gb/4bank=4gb max in one bank you can buy 2x2 2x4 1x4 sticks
option 3
in my opinion the best solution if you want to use new memory with next pc and you will be buy it in the next year maybe two
you need to buy 2x4gb kit 1600 (they dont much more expensive that 1333 and you can use it in next machine and add second kit) what company its you choose i always buy geil memory and havent problems remember that the best you will buy low radiators you will not have a problem with cpu cooler i will buy that model
black dragon GB38GB1600C9DC 2x4gb 1600 1.6 v can be problem to find in future second kit (i have old ddr2 modules who working 8 years 24/7)
or
GEL38GB1600C9DC 2x4 1600 1.5v one minus new module from geil are 1.65 if you find kit on 1.65 from that brand from geil that better
Prices are random but 80$ shoud be fine
 

kghastie

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So I ran for a few days with the Aeneon and Patriot memory running side by side, with the BIOS memory settings set to auto. I didn't have a chance to dig out my memtest+ DVD, so the only testing I did was the Windows memory test and an hour of Blend with Prime95. Never saw any issues at all.

Everything seemed to be fine until two days ago, when I tried to boot and I get no POST beeps and no display. DVD drive spins up, all 4 lights on the mobo turn on, some fans spin up, but no beeps/display. Any ideas? The only changes were a new SSD a couple of weeks ago, and then the memory addition a week ago.
 

kghastie

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Pulled out the Aeneon memory that was added recently, still no POST. Pulled out the other 2 sticks (Patriot) and got the expected no-memory beeps. Added one Patriot stick back and booted fine. Added the second Patriot stick back and booted fine. Any idea what's going on?