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Windows 7 64 bit, 8 gigs of ram installed, 3.99 available?

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  • Memory
  • Windows 7
  • RAM
Last response: in Memory
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March 23, 2010 10:28:00 PM

I recently built my new own computer, and it runs windows 7 64 bit. I installed 8 gigs of ddr3 1066 mhz ram, and apparently 4 gigs are allocated for hardware and 3.99 i can use.

Any idea why? And yes, memory remapping is on in the bios and max memory is not ticked in msconfig.

Btw, i have a radeon 5770 gpu.

More about : windows bit gigs ram installed

a b } Memory
March 24, 2010 12:37:55 AM

What are your full system specs (mainly CPU and Motherboard)?
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March 24, 2010 1:39:17 AM

Intel core i5 750 overclocked at 3.7 ghz, 20x multiplier and a 185 BCLK frequency. 8 gigabytes of 1066 RAM, and a ASUS P7P55D PRO mobo.
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a b } Memory
March 24, 2010 2:10:32 AM

Your 1066 MHz RAM, what is it actually run at? Is your memory multiplier (SPD) at x8? This would be it's default setting, but with a 185 bclk you'd be running at 185x8 = 1480 MHz. Try lowering your memory multiplier to 6.

Also what Voltage is your RAM set to? And please provide a link to your RAM.

The following may be of interest, see the section under "The Great Heist": http://www.anandtech.com/mb/showdoc.aspx?i=3652&p=20
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a b } Memory
a b $ Windows 7
March 24, 2010 2:13:34 AM



Click the Start orb, and type in msconfig.

Right click the msconfig app to run it as Administrator. That brings up the configuration utility.

Click the Boot tab, and then click the Advanced Options button.

In that window, there is a setting for Maximum Memory - Make sure the checkbox for it is clear (not checked), then reboot your computer
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a b } Memory
March 24, 2010 2:14:44 AM

Hmm, after skimming that article (and just a good practice in general) I'd suggest trying to get everything working at default. Shoot, even just load optimized defaults and keep all clocks at stock until we get this sorted out.
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