Epox 9NPA+ Ultra: Features and Layout

 Specification  Epox 9NPA+
CPU Interface Socket 939 Athlon 64
Chipset nForce4 Ultra (single chip)
BUS Speeds 200MHz to 400MHz (in 1MHz increments)
PCI/AGP Speeds Asynchronous (Fixed)
PCI Express 100MHz to 145MHz in 1MHz increments
Core Voltage Off, +0.025V to +0.25V in .025V increments
(to 1.75V with a 1.5V CPU)
DRAM Voltage Auto, 2.5V to 3.1V in 0.1V increments
Chipset Voltage 1.5V, 1.6V, 1.7V, 1.8V
Hyper Transport Ratios Auto, 1x to 5x in 1x intervals
LDT Bus Transfer 16/16, 16/8, 8/16, 8/8
LDT Voltage 1.2V, 1.3V, 1..4V, 1.5V
CPU Ratios Auto, 5x to 50x in 1x increments
DRAM Speeds Auto, 100, 133, 166, 200
Memory Command Rate Auto, 1T, 2T
Memory Slots Four 184-pin DDR Dual-Channel Slots
Unbuffered ECC or non-ECC Memory to 4GB Total
Expansion Slots 1 x16 PCIe Slots
3 x1 PCIe
3 PCI Slots
Onboard SATA 4-Drive SATA 2 by nF4
Onboard IDE Two Standard NVIDIA ATA133/100/66 (4 drives)
SATA/IDE RAID 4-Drive SATA 2 PLUS
4-Drive IDE (8 total)
Can be combined in RAID 0, 1
Onboard USB 2.0/IEEE-1394 10 USB 2.0 ports supported nF4
2 1394A FireWire ports by VIA VT6307
Onboard LAN Gigabit Ethernet PCIe by Vitesse VSC8201 PHY
Onboard Audio Realtek ALC850 8-Channel codec with 6 UAJ audio jacks, CD-in, SPDIF in/out, coaxial and optical SPDIF Out
Other Features AMD X2 Support with MD9N5701 or higher BIOS
2-Digit Diagnostic LED, On-Board Power and Reset Switches
BIOS Award md9n5701 (7/01/2005)

For quite a while, Epox boards have had the reputation of fast performance at stock speeds. In recent roundups, Epox has also done very well in the overclocking arena. The Epox was our Gold Editor's Choice in the Socket 754 roundup, and was a great all-around performer.

The 9NPA+ continues the Epox tradition of a great feature set at a standout price. The Ultra version sells for about $110, but it is also available as an even cheaper nForce4 4X version, the 9NPA for around $93, and a more expensive 9NPA+ SLI for about $149.

BIOS options and ranges are consistent with a top enthusiast board. Memory voltage extends to a very respectable 3.1V, but it does not reach the levels really needed for OCZ VX or Mushkin Redline. For those high-voltage 2-2-2 memories, you will still need a DFI nForce4 board.

Epox likes to provide Diagnostic LEDs on their boards to assist in troubleshooting, and you will still find the LED display, despite the reasonable price of the motherboard. You will also find a full implementation of NVIDIA nForce4 chipset features, on-board Firewire support, and gigabit LAN supported by the PCIe bus.


Click image to enlarge.

The layout of the Epox is generally pleasant with the glaring exception that both the ATX 24-pin and 12V 4-pin power connectors are between the CPU and the real panel connections. In this location, it is difficult to find a really good routing for the bulky 24-pin cable. No matter how you run it, the cable will have to snake around or over the CPU or memory, potentially blocking air flow.

The other less-than-perfect location is the floppy connector at the lower right edge of the board. If you don't care about floppies, then ignore my complaints, but some floppy cables will have a tough time reaching in tall cases. Both IDE connectors are located on the right edge just behind the PCIe slot, so IDE cables have to be very flat under a long card like the top NVIDIAs, or the PCIe will not seat properly.

The rest of the board layout is quite good. All of the SATA connectors clear the big slots easily. The additional on-board connectors are at the bottom edge of the board, away from the slot area. The exception is the location of the CD/Aux in connectors, which are above the big slots. This location is easier to navigate if you use CD-In connectors with your optical drives.

The single chip nForce4 Ultra is cooled with an active fan and heavy heatsink. The nF4 gets hot during the heavy loads of overclocking and Epox provided a solution that seems to work well at keeping the nF4 chip cool during our testing.

Every board in this nForce4 Ultra roundup uses the Realtek ALC850 codec to provide onboard audio, and this includes the Epox. The ALC850 Codec provides four pairs of stereo outputs, with 5-Bit volume controls and multiple stereo and mono inputs, along with flexible mixing, and gain and mute functions. Two 50mW/20ohm headset audio amplifiers are integrated at Front-Out and Surround-Out, and both amplifiers are selectable for Front-Out, Line-In and Mic-In as a Universal Audio Jack.

You can find more information on the ALC850 at Realtek.

Epox provides a full selection of rear I/O ports. These include 6 programmable audio mini jacks plus optical and coaxial SPDIF out connectors to support the Realtek ALC850. The back panel also includes PS2 mouse and keyboard, 1 standard Firewire (IEEE1394a), Parallel port, 1 serial port, 4 USB, and one RJ45 Gigabit Ethernet.

Epox does not offer additional RAID controllers, but the 9NPA+ Ultra does implement the full nForce4 feature set of 10 USB ports, 4 SATA 2/4 IDE, which can be combined in RAID arrays, and an on-chipset hardware firewall.

ECS KN1 Extreme: Overclocking and Stress Testing Epox 9NPA+ Ultra: Overclocking and Stress Testing
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  • ChineseDemocracyGNR - Saturday, July 9, 2005 - link

    "If you looking to save even more money, the 9NPA, based on the nForce4 x4 chipset, has a street price of around $90. You give up the SATA 2 support and 1000 bus, but most of the performance features are still available in the same basic motherboard. "

    I think you're talking about the 9NPAJ motherboard, which uses the nForce4 chipset and supports "2.0 GTs HT FSB".
  • truteck - Monday, December 19, 2005 - link

    Regarding the post from ChineseDemocracyGNR on: Jul 9, 2005 3:19 PM
    Quoting statement from Anandtech's reviewer:
    "If you looking to save even more money, the 9NPA, based on the nForce4 x4 chipset, has a street price of around $90. You give up the SATA 2 support and 1000 bus, but most of the performance features are still available in the same basic motherboard. "
    -------------------

    ChineseDemocracyGNR:

    I think you're talking about the 9NPAJ motherboard, which uses the nForce4 chipset and supports "2.0 GTs HT FSB".

    -------------------
    I agree with ChineseDemocracyGNR! To AnandTech:
    No disrespect intended!
    "Sorry to say, but i believe your statement is wrong".
    The Epox Model # EP-9NPA+Ultra MoBo does support Sata-2 drives.
    I don't know where you got that incorrect info.
    Also, i'm not sure what you are refering too about your other statement about "giving up 1000 bus"? It supports 2000 bus.

    T_T
  • TheGlassman - Saturday, July 9, 2005 - link

    HTT's multi's were listed in the review.
    I have confirmed that the Chaintech's 6-03 bios overclocks just fine with single core cpu's.
    Phiro, I understand your point, and it is a good one.
    For me Anandtech reviews are one of my primary tools for deciding what hardware to buy. I think it is the same for a lot of people. Anandtech has earned this trust. That is why this review is disturbing. The results do not match my experience. You might notice in my previous posts, that I have followed false trails trying to figure out why. I cannot explain why the Chaintech board (and others with experience with other boards) performed so poorly in overclocking.
    The reason this is imoportant is that the final ratings follow the philosophy stated in the beginning, that a better overclocker is a better board, because the actual performance at stock speeds is equal.The application testing bore this out.
    Us 'bleeding edge" guys are well aware of how very small changes can make a big difference in performance. The fact that the award winners were using bios's not available to the public ( I have just now rechecked) that are dated a few days after their most recent bios, (for dfi, a beta which carries no warrantee support, their last release bios (the one that will be on the board you buy) is dated in March), throws the final results into doubt. In other words they appear to be special bioses for this test.
    In the past, Anandtech has been very forthcoming when using a beta bios, explaining why, and stating that the board maker will make it available, or the included features available in a release bios. This was not done, they were not even labeled as beta's.
    When Anandtech labels a board as an award winner, it is giving it's seal of approval, that people such as your self and myself will factor in when making a buying decision. The truth is under your criteria, any of these boards will serve you very well. From the application tests, your decision should be based on a) a good match to your programs, b)features you need or think you may need, and c) price. Anandtech's recommendation is irrelevant.
    Anandtech's "forum-bleeding edge" audience is larger than you assume in your estimate. The fact that you are looking at an nVidia board at all says you are very involved in you purchasing decisions, other wise you would let some one else handle it for you. "gimme something that works" would be your involvement.
    Anand awards have been given to 2 boards that you cannot buy, or so far even upgrade, to "as tested".
    Speaking for myself, computer hardware is hard to keep up with, and losing a rock like Anandtech will be a great loss. I hope that will not happen, but excellent sites do fall by the wayside if they slip too far.
  • Phiro - Friday, July 8, 2005 - link

    I think Anandtech has their audience nailed down about 80% of the time - their one flaw is listening to their forums a little too much IMO.

    Too many people have posted "oh what a dumb review we already bought our motherboards blah blah blah" - a GOOD example of not listening to the forums. If you're posting on the forums, you've probably been here for some time and you're in that 1% of computer users who qualify as "bleeding edge". Anandtech doesn't want to constantly address just the bleeding edge audience - as fun as you can be, you're 1% of the market, and for every right decision you make, you make wrong decisions.

    To rip on Anandtech a little bit though, they do listen too much to the forum overclockers. The vast majority of users have NO interest in overclocking. 4% higher framerates isn't worth goofing around with voltages and installing a water cooling system.
  • arswihart - Friday, July 8, 2005 - link

    I think its funny that so many people are now like, "Epox is the best" "they OC the best" "I'm gonna get one of those Epox NF4 boards that Anandtech reviewed". I have told you for months that Epox is nice, and to get the 9npa+, and great reviews have been floating around for a long while now. someof you take Anandtech's word as the word of GOD. That is hilarious and I guess its to be expected out of the mainstream audience that reads Anandtech.

    About the 9npa+ and 9npa SLI, OFFICIAL dual-core BIOS's were just released today by Epox. Enjoy.
  • TheGlassman - Friday, July 8, 2005 - link

    Good question. It could explain the problems experienced with most of the boards. The chipset will run well over 1000 with no problem, but 1200ish will cause the boards various problems, usually a reset to a safe mode.
  • Peanya - Thursday, July 7, 2005 - link

    Hmm I wonder if they tried a 3x LDT multiplier on some of those boards. I'm thinking that's why the Abit wouldn't get past 250MHz. I've not only seen reviewers get well past there, but many users. Some brands automatically lower the LDT for you, whereas some do not. Was this taken into consideration?
  • AtaStrumf - Thursday, July 7, 2005 - link

    MOBOs have always been messy things to test, debug etc. The thing I hate most is changing the MOBO, because there are so many possible problems associated with it.

    I do have one HUGE gripe with this roundup. You chose to test DFI's non SLI board as a control for SLI/Ultra boards, but that happens to be the worst possible choice. Why? Because, as you pointed out yourself, that is exactly THE SAME board, with just one pin on the chipset shorted/cut. For control you should have tested the worst case scenario, like a physically different board (just one PCIe 8x/different layout, feature set) possibly a newer revision. This brings us to the biggest problem with this kinds of assumptions and MOBO testing in general. Different versions, REVISIONS, bios', different memories, variable sample-to-sample MOBO quality, and now to top it off, different Athlon CPU revisions. I definately think you should not have made the assumptions that you did and should have tested ASUS, MSI and GIGABYTE NF4 Ultra boards. They are afterall one of the biggest enthusiast MOBO manufacturers.

    If you want to keep your reputation you should definately pay more attention to this sort of things. Don't rush so much! You don't have do a roundup, post individual board reviews and take more time with them. Like you did with the DFI! You should even get at least three samples of each MOBO from different sources and compare them in order to really be able to get reliable results. Forum posts from other people can be very misleading, because of all the variables and skills these people have. This would make you THE BEST ;-) As things stand now, you're pretty mediocre I'm afraid.

    One typo I found:

    Page 19:

    Our past tests have shown performance of the AGP-8x and PCIe **688** Ultra to be virtually identical

    Probably 6800 ;-)
  • Viper4185 - Thursday, July 7, 2005 - link

    1) Wesley next time please can you post instructions of how to run memtest to determine the best tRAS rating for your memory. I emailed you in your last article and received no response. Yes, I am a n00b. Perhaps someone else can tell me :P

    2) I have the same memory as you, how do I check if it is TCCD or TCC5?

    3) You don't actually say which ethernet controller is better, the Marvell or the NVIDIA?

    4) I think it was a big mistake for you to leave out the Gigabyte boards. For those that are interested in the Gigabyte boards compared to some of the above check out this review.
    http://www.hardwarezone.com/articles/view.php?cid=...

    Otherwise good review, thanks Wes. Hopefully you can answer Q1-3 or someone else :)
  • Jotequila - Thursday, July 7, 2005 - link

    Hum.... Chaintech VNF4-Ultra can reach 275+ FSb easily, there are so many users here that can say same thing as me....

    There is something strange on the results, i can bet that other mobos on the round-up can reach high mhz too....

    Look this:

    http://img55.imageshack.us/img55/2891/superpi17hi....

    Is with my chaintech, i think that you are cheating things here...

    Best Regards,

    Juan Edaurdo Donoso

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