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How to get to 6Gb DDR3 memory

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November 28, 2010 6:26:09 PM

Hello,
I recently purchased a new Acer system which has 6Gb memory. On most systems out there (and memory packages), I see they come as 2Gb x 3. When I checked my new system, it came as 2Gb x 2 plus 1Gb x 2. The total adds up to 6, but I wonder if this makes the memory run at slower than the 1333 speed it is rated at? Passmark Performance test says it is only running at 533 Mhz. Does this make sense? Thanks a lot for any help.

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a c 128 } Memory
a c 435 V Motherboard
November 28, 2010 7:08:08 PM

Cpu-z will also give you some ram specs. 533 means the ram is running at 1066. It's not worth changing just to get at 1333; the performance difference is very small.
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a b } Memory
a c 221 V Motherboard
November 28, 2010 7:17:47 PM

The Acer has a dual-channel memory bus and those systems that use 3 x 2GB modules have a triple-channel memory bus (Intel socket 1366).

If you're wondering, an Intel i5 CPU won't run in triple channel mode.
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a c 347 } Memory
a c 717 V Motherboard
November 28, 2010 7:44:41 PM

It depends on the ACER the Aspire Predator G7750 has 6-slots i7-9xx and the i7-8xx or i5's are 4-slots. In your case, ACER did do you any favors with the 2GB & 1GB and the 533 {DDR3 = Double Data Rate} 533 X 2 = 1066 MHz. Also, I too assume that your BIOS is locked-down keeping you possibly from making the OC to 1333 MHz.

However, if you can change the RAM OC you'll first need to VERIFY the RAM, all 4 sticks, are capable of 1333 MHz. As mentioned, CPU-z will also render 'Part-Numbers' that you'll need to look-up if they're ALL 1333 MHz. The 'speed' difference is minimal, and NOT 30% slower - more like 2~5% if that faster with 1333 vs 1066 MHz.
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November 28, 2010 8:44:16 PM

Best answer selected by bmoseleyaz.
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November 28, 2010 9:35:11 PM

Thanks for the responses, I won't worry about going right out and buying different memory then. Next step will just be the full 8Gb, and all 2Gb memory sticks.
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a b } Memory
a c 221 V Motherboard
November 28, 2010 9:41:52 PM

bmoseleyaz said:
Thanks for the responses, I won't worry about going right out and buying different memory then. Next step will just be the full 8Gb, and all 2Gb memory sticks.

Yes, that is what Acer specifies as your only upgrade option.
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November 29, 2010 12:32:30 AM

That's cool, cause I could never see needing more than 8 Gb! :-)
Will have to look into the option of overclocking. The computer is an Acer Aspire - M3400-U2052. CPU-Z says the motherboard is an AMD 880G. Will have to do some research to see if overclocking is possible. Otherwise, maybe install a hexa-core.
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