Chinh Do

EPoX EP-9NPA+Ultra 939 Motherboard and 4GB of RAM

14th November 2007

EPoX EP-9NPA+Ultra 939 Motherboard and 4GB of RAM

posted in Technology |

If you have an EPoX EP-9NPA+Ultra 939 NVIDIA nForce4 Ultra ATX AMD Motherboard, and you installed 4GB of RAM, the BIOS may only see 3407872K Total Memory:

Epox EP-9NPA+Ultra 4GB Vista

To enable the BIOS to see the full 4GB of RAM, do the following:

  • Enter the BIOS Setup Utility (reboot and press Del key).
  • Choose Advanced Chipset Feature, then DRAM Configuration
  • Change “S/W memory hole Remapping” to Enabled
  • Change “H/W memory hole Remapping” to Enabled

Epox EP-9NPA+Ultra 4GB Vista

If you have Windows XP or Windows Vista 32-bit, the operation system will not see the full 4 GB anyway. The “fix” is to upgrade to Vista 64-bit or just live with whatever amount of RAM the OS can use. My Vista 32-bit installation reports 3327 MB of total memory.

Epox EP-9NPA+Ultra 4GB Vista

This entry was posted on Wednesday, November 14th, 2007 at 11:38 pm and is filed under Technology. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

There are currently 15 responses to “EPoX EP-9NPA+Ultra 939 Motherboard and 4GB of RAM”

  1. 1 On November 28th, 2007, naisioxerloro said:

    Hi.
    Good design, who make it?

    posted on November 28th, 2007 at 12:22 pm

  2. 2 On November 28th, 2007, Chinh Do said:

    naisioxerloro: It’s based on the Tulip Time theme (download here). I changed the color scheme, some images, and added a few background images.

    posted on November 28th, 2007 at 1:31 pm

  3. 3 On January 6th, 2008, Rick said:

    Thank you!

    This tip will help when I need to upgrade.

    Rick

    posted on January 6th, 2008 at 10:53 am

  4. 4 On January 27th, 2008, Sol said:

    This will help me too. Thanks! I will upgrade as soon as DDR1 becomes affordable again. Ahh, I love this Motherboard since three years now! It’s a pitty Epox no longer exists…

    posted on January 27th, 2008 at 2:11 pm

  5. 5 On January 27th, 2008, Chinh Do said:

    Sol: I had no idea that Epox is gone. Pity indeed. Thanks. Chinh

    posted on January 27th, 2008 at 3:20 pm

  6. 6 On April 2nd, 2008, Sol said:

    Me again. I want to thank you again for your hint and leave a post for all those “Epox 9NPA+ Ultra” + “4GB RAM” – Googlers. Now I’m also at 4GB with my good old 9NPA+ Ultra running Vista 64 and there is no need to upgrade to 775 or AM2 for me left ATM. I will just wait another two years and then will see if I really really neeeed a new computer – if the board not dies in the meantime :-)
    BTW DDR1 is cheaper then ever! Just bought original Aeneon at 22.- Euro per gig in Europe. That’s half the price of two, three months ago. This one is doublesided but runs without any problem in all 4 slot!
    Ah, and Epox now is Suppox…

    posted on April 2nd, 2008 at 10:53 am

  7. 7 On April 2nd, 2008, Chinh Do said:

    Sol: That’s great. That should be plenty of RAM to run stuff. My 9NPA+ box is also serving me well. Unless you’re unlucky, these things should last a long time. My home “server” is a Dell Optiplex GX200 that I bought about 7 years ago. It still works great as a file server.

    posted on April 2nd, 2008 at 7:37 pm

  8. 8 On July 6th, 2008, PJ said:

    Great to see there are still other 9NPA+ users out there extending the life of their boards. I’ve been using EPOX for 8 years, and have had the 9NPA+ for just about 3 years now. I went dual core about a year ago (64 X2 3800+) and have it running 24/7 @2900MHz with ZERO issues (water cooled). My 2GB of OCZ Platinum is pushing 241MHz on the bus, also with zero issues. Having finally gone to Vista x64, I see how it totally munches through RAM, and like many others have done searches seeing if the 9NPA+ can handle all 4 sticks with no issues. I just bought another 2GB pair of the same style OCZ Platinum for a fifth of what I paid for it three years ago! A very small investment to make in order to extend the life of the best motherboard/system I ever owned. Not the latest and greatest of course, but I still score 5.9 Windows Experience Index across the board except for CPU which is 5.3. I have no reason to upgrade any time soon with the performance this board puts up… Thank you Epox, and wish you were still in the game…

    posted on July 6th, 2008 at 11:44 pm

  9. 9 On October 19th, 2008, ulas said:

    slm

    posted on October 19th, 2008 at 11:23 am

  10. 10 On December 23rd, 2008, Vista 64-bit and SoundBlaster X-Fi Crackling/Popping » Chinh Do said:

    [...] my bedroom home theater PC to Vista 64-bit a couple days ago (just have to make full use of all of my precious 4GB of RAM). Everything is working surprising well so far, with the exception of sound! Whenever I play any [...]

    posted on December 23rd, 2008 at 11:45 pm

  11. 11 On December 24th, 2008, Hội Người Việt Richmond / Richmond Vietnamese Association | Vista 64-bit and SoundBlaster X-Fi Crackling/Popping said:

    [...] my bedroom home theater PC to Vista 64-bit a couple days ago (just have to make full use of all of my precious 4GB of RAM). Everything is working surprising well so far, with the exception of sound! Whenever I play any [...]

    posted on December 24th, 2008 at 12:14 am

  12. 12 On February 23rd, 2009, My Multiple-Monitor Programming Setup » Chinh Do said:

    [...] SQL Server instance, IIS, etc. Remember that on Windows XP or Vista 32-bit, the maximum RAM is limited to about 3.2 GB or [...]

    posted on February 23rd, 2009 at 9:24 pm

  13. 13 On March 25th, 2009, Michal said:

    I must reinstall the WIN XP after upgrade to Opteron 170 but i don’t know where to find right functioanal drivers for this MB (

    posted on March 25th, 2009 at 5:01 am

  14. 14 On March 25th, 2009, Chinh Do said:

    Michal: Try looking on nvidia.com for the chipset drivers and Realtek.com for the onboard audio. Chinh

    posted on March 25th, 2009 at 8:39 am

  15. 15 On January 4th, 2010, Gabriel said:

    Thanks, very helpfull post!

    posted on January 4th, 2010 at 1:11 pm

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