Gigabyte K8NXP-SLI: Features and Layout

 Specification  Gigabyte K8NXP-SLI
CPU Interface Socket 939 Athlon 64
Chipset nForce4 SLI (single chip)
BUS Speeds 200MHz to 400MHz (in 1MHz increments)
PCI/AGP Speeds Asynchronous (Fixed)
PCI Speeds 100MHz to 150MHz in 1MHz increments
Core Voltage Auto, 0.80V to 1.75V in 0.025V increments
DRAM Voltage Normal, +0.1V, +0.2V
Chipset Voltage Normal, +0.1V, +0.2V, +0.3V
Hyper Transport Ratios Auto, 1x to 5x in 1x increments
LDT Bus Transfer 16/16, 16/8, 8/16, 8/8
LDT Voltage Normal, +0.1V, +0.2V, +0.3V
CPU Ratios Auto, 4x to 25x in 0.5x increments
Cool'n'Quiet MAX FID Auto, 8.0 to 13.0 in 0.5x increments
DRAM Speeds Auto, 100, 133, 166, 200
Memory Command Rate Auto, 1T, 2T
Memory Slots Four 184-pin DDR Dual-Channel Slots
Unbuffered Memory to 4GB Total
Expansion Slots 2 x16 PCIe Slots
2 x1 PCIe
2 PCI Slots
SLI Setup Movable PCB Card
Onboard SATA 4-Drive SATA 2 by nF4 PLUS
4-Drive SATA by Sil3114
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
PLUS 4-Drive SATA by Sil3114
Sil3114 Raid 0, 1, 5
Onboard USB 2.0/IEEE-1394 10 USB 2.0 ports supported nF4
3 1394B FireWire 800 ports by TI chip
Onboard LAN Dual Gigabit Ethernet
PCIe by Vitesse VSC8201 PHY
PCIe by Marvel 88E8053
Onboard Audio Realtek ALC850 8-Channel codec with 6 UAJ audio jacks, CD-in, front audio, and coaxial SPDIF In and Out
Other Features Gigabyte Dual BIOS
BIOS Award 2/01/2005

The shipping Gigabyte BIOS for the K8NXP-9/K8NXP-SLI family provides a wide and useful range of adjustments for many features, with the notable exception of a very limited range of memory voltage adjustments compared to other boards in the SLI roundup. As is the Gigabyte custom in recent designs, Advanced Chipset Features (and Memory Timings) can only be seen when you hot press CTRL+F1 while in the BIOS. HyperTransport adjustments are also provided in the hidden Advanced Chipset Features menu.

There are no BIOS options for adjusting or controlling SLI. This is handled in the nForce4 platform drivers and the nVidia graphics drivers.

The Gigabyte K8NXP-SLI, like the sister K8NXP-9, was designed as a top-of-the-line nForce4 motherboard. As the flagship model, it sports all the top Gigabyte features.

The SLI version features start with the trademark DPS daughter card that you can see on the right of the board picture. This is used to increase power reserves and stability by increasing the board to 6-phase power. You can see the DSP slot to the left of the CPU, and the trademark Gigabyte dual BIOS chips to the right of CPU. This Gigabyte feature provides back-up BIOS in the event of a bad flash or unstable BIOS setting.

Gigabyte provides eight SATA ports. Four ports are 3Gb/s ports provided by the nForce4 chip, and the four additional are the 1.5Gb/s ports driven by the Silicon Image 3114. The 2nd group of ports is useful, but they would have been much more exciting if they had been 3Gb/s ports like those provided by nForce4. They do support Raid 5.

We are pleased that Gigabyte uses the nF4 on-chip Gigabit LAN by supporting it with a Vitesse (Cicada) Gigabit PHY. Gigabyte then goes one step further by including a second Gigabit LAN on the PCI Express Bus. This second LAN is also removed from the constraints of the slower PCI bus as it resides on the much faster PCIe bus.

Audio is AC '97 2.3, supported by the popular 8-channel Realtek ALC850. The K8NXP-SLI9 includes a wide range of audio I/O provided to make the most of the 850 chip. This includes 6 programmable audio mini-jacks and coax SPDIF in and out - all on the rear panel.

A pioneering feature for Gigabyte has been their support of high-speed 1394B Firewire on their boards. This continues with the K8NXP-SLI with 2 ports capable of 800MB/s or Firewire 800. This is double the speed of 1394A for those looking for fast Firewire access.

From a feature, board layout, and BIOS options point of view, the K8NXP-SLI can be considered the twin of the K8NXP-9. The only real change is the replacement of one PCI slot with a second PCIe video slot. All the good things about the features and layout of the K8NXP-9 are still here in the K8NXP-SLI.

DFI LANParty nF4 SLI-DR: Overclocking and Stress Testing Gigabyte K8NXP-SLI: Overclocking and Stress Testing
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  • eva2000 - Monday, February 28, 2005 - link

    whoops no mention of psu was used in system config listing but didn't read till page 20 of the review it mentions OCZ 520W PS psu heh
  • Slaimus - Monday, February 28, 2005 - link

    They used a OCZ 520W.
  • neologan - Monday, February 28, 2005 - link

    I think the test results for 3dmark2003 single and SLI are the wrong way around?

    http://www.anandtech.com/mb/showdoc.aspx?i=2358&am...
  • F4810 - Monday, February 28, 2005 - link

    Why did they show no benchmarks with the mobo's overclocked? It doesnt make sense to say these boards are better becuase you can clock the memory higher if the overall CPU clock is roughly the same. The reason they dont show you is that due to the onchip memory controller on the AMD chips, the high memory frequency doesnt make much of a difference at all in real world terms. As long as you can clock the CPU high that is all that really matters. Also they dont take into account cost as some boards cost 50% more that the others.
  • dornick - Monday, February 28, 2005 - link

    I was considering jumping on the SLI bandwagon until I had some sense knocked into me.

    I'd like to see a comparison of the Ultra chipset MBs, including the Chaintech, Epox, etc... since that's where I think the nForce 4 market will go.
  • eva2000 - Monday, February 28, 2005 - link

    missing one vital piece of info, what PSU you used hehe
  • Spacecomber - Monday, February 28, 2005 - link

    Thanks for doing the indepth analysis of this new chipset and how it is being implemented by some major motherboard manufacturers.

    There was one detail that I was hoping to see some reference to. I understand, from a friend, who has the MSI SLI motherboard, that the Creative Live sound chip only works if your power supply has a -5 volt connector on it. It looks to me like the OCZ power supply that you used has this, but many of the new power supplies, such as the Enermax v2.0 power supplies, no longer have a -5 volt connection. He was using a Enermax 535 watt Whisper II (SLI ready) when he ran into this issue. This kind of compatability problem slipping through QA seems like another indication that the everyone was in a big hurry to get these motherboards to market, maybe before they were thoroughly tested.

    Space
  • Regs - Monday, February 28, 2005 - link

    I liked the subtle hints Wes.

    In your final words you stated, "If you want the best performance possible then the answer would likely be yes". Then how would this apply for users getting two 6600GTs?
  • xsilver - Monday, February 28, 2005 - link

    great article
    minor gripe -- the overclocking "graphs" are useless -- what would be better is the resulting fps of overclocking to show people if its worth it to get that extra xxx fps
  • arfan - Monday, February 28, 2005 - link

    now i am waiting ultra mobo benchmark. What about the price of all this mobo ? i fell disappointed with msi doesn't have PCI 1x. (Sorry my english language is very bad)

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