Specifications and Basic Features

ASUS P5N32-E SLI Plus
Market Segment: High-End Performance - $185
CPU Interface: Socket T (Socket 775)
CPU Support: LGA775-based Pentium 4, Celeron D, Pentium D, Pentium EE, Core 2 Duo, Core 2 Extreme
Chipset: NVIDIA 650i SPP (C55) + 570 SLI MCP (MCP55P)
Bus Speeds: Auto, 533 to 3000 QDR (133~750) in 1MHz increments
Memory Ratios: Auto, Sync., 1:1, 5:4, 3:2
Memory Speed: 400MHz~2600MHz in various increments
PCIe 1-2-3 Speeds: 100MHz~200MHz in 1MHz Increments
LDT Frequency: 1x, 2x, 3x, 4x, 5x, 6x, 7x, 8x
Core Voltage: Auto, 0.83125V to 1.90000 in 0.00625V increments
FSB Options: Optimal, Linked, Unlinked
CPU Clock Multiplier: Auto, 6x-11x in 1X increments - Core 2 Duo, downwards unlocked,
Core 2 Extreme 6x-50X
DRAM Voltage: Auto, 1.8500V to 3.4250 in .025V increments
DRAM Timing Control: Optimal, Manual - 13 DRAM Timing Options
NB Voltage: Auto, 1.20V to 2.75V in .05V increments
1.2V HT Voltage: Auto, 1.20V to 1.95V in .05V increments
SB Voltage: Auto, 1.50V to 1.85V in .05V increments
CPU VTT: Auto, 1.20V to 1.55V in .05V increments
Memory Slots: Four 240-pin DDR2 DIMM Slots
Dual-Channel Configuration, DDR2-400, 533, 667, 800
Regular Unbuffered Memory to 8GB Total
Expansion Slots: 2 - PCIe X16 (2-x16 electrical for SLI or Multi-GPU)
1 - PCIe X16 (x8 electrical)
1 - PCIe x1
2 - PCI Slot 2.2
Onboard SATA/RAID: 6 SATA 3Gbps Ports - 570 SLI MCP
(RAID 0, 1, 0+1, 5, JBOD)
Onboard IDE: 1 ATA133/100/66 Port (2 drives) - 570 SLI MCP
Onboard USB 2.0/IEEE-1394: 10 USB 2.0 Ports - 4 I/O Panel - 6 via Headers
2 Firewire 400 Ports by VIA 6309P - 1 I/O Panel, 1 via Header
Onboard LAN: NVIDIA Gigabit Ethernet - PCIe - 2 x Marvell 88E1116 PHY - 2 ports via 570 SLI MCP
Onboard Audio: ADI 1988B - 8-channel HD audio codec, Supreme FX audio card
Power Connectors: ATX 24-pin, 8-pin EATX 12V
I/O Panel: 1 x PS/2 Keyboard
1 x PS/2 Mouse
1 x S/PDIF Optical - Out
1 x S/PDIF Coaxial - Out
1 x IEEE 1394a
2 x RJ45
4 x USB 2.0/1.1
Auto Overclocking: AI Overclock - 5%10%, 15%, 20% Fixed; N.O.S. - 3%, 5%, 8%, 10% Variable
BIOS Revision: Award 0602
Board Revision: v1.0

The latest ASUS BIOS offers a very good level of options that are available for tweaking the board with specific emphasis placed on the available memory settings. We found in memory testing that switching to manual settings and changing the tCAS, tRCD, tRP, and tRAS was required to ensure optimum performance.

Compared to the 680i LT board, the number of voltage options and range of changes are extensive but the lack of GTL Ref voltage settings limited our quad core overclocking results to 360 FSB but the board was able to reach benchmark stable FSB speeds of 495 with our dual core processors.

One other issue we have with the 0402 and 0602 BIOS releases is that memory sub timings are very tight, especially tRC rates which ended up causing stability issues with some of our lower cost memory modules with ProMOS or Elpida ICs. While the aggressive memory timings allow for optimum performance, we generally had to hand tweak them to ensure stability across a wide range of memory modules.




ASUS offers minimum support for NVIDIA's nTune system utility but includes several proprietary programs for tweaking and monitoring the board. The AiBooster utility offers the ability to tweak FSB speeds and certain voltages along with monitoring basic temperatures, fan speeds, and voltages. This utility allows the user to fine tune the AI NOS program that detects system load and dynamically increases system performance up to 10%. We were able to set NOS at 10% and complete our benchmark suite without issues. However, when using the AI Overclock option in the BIOS, we were unable to get the fixed 20% setting stable during benchmarking and had to back off to 15%.

Also included is the ASUS Update program that allows for BIOS updates within Windows from the ASUS FTP site (or from your hard disk if the BIOS was already downloaded). We have not had any issues recently when updating our BIOS with the ASUS Update program, but we still prefer the DOS floppy method. The ASUS PC Probe II utility is one of the better manufacturer supplied programs for tracking voltage settings, fan speeds, and basic temperatures. We still believe abit's µGuru technology offers the best combination of tweaking and monitoring capabilities in a supplier provided program, but ASUS's AiSuite is certainly capable enough for most users.

Index Board Layout and Features
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  • R3MF - Monday, April 2, 2007 - link

    this mish-mash of different chipsets probably works fine under windows, because asus will provided a tailored nVidia driver to ensure it works.

    but they have always been rubbish at providing a linux variant of the proprietary systems design.

    can i use the standard release nVidia linux chipset drivers to use this board under linux?

    if the answer is 'no' then this board is garbage.
  • Gary Key - Monday, April 2, 2007 - link

    This board uses the standard NVIDIA 680i driver set in XP and Vista. I had no issues loading SUSE 10.2 on the board but did not test it extensively with RAID or other options. The ADI audio worked but not as well as the Realtek offerings on other boards.
  • yacoub - Monday, April 2, 2007 - link

    but only for you and the other handful of folks in that situation...
  • yyrkoon - Monday, April 2, 2007 - link

    Yes, and no. Because users are fed up with MS/WIndows/Vista, a lot of users are making the plunge into Linux.

    Anyhow, it is the softwares responcability to comply with the hardware, not vice versa(to a point that is, obviously the hardware does need to comply with each specification, IE SATA, IDE, x86, etc.), if Linux is to be taken seriously, the Linux dev teams NEED to write a module for every possible chipset out there . . . if not, then well, you will have what you currently have right now, an OS, that does not support near as many hardware configurations, as Windows does.

    Linux is a fun OS, and great for certain situations, but when you have problems like those caused by udev, and whatever else, you can not help but feel like it is not complete. Granted, the Linux dev teams for each distro, is usually much smaller than the teams that write code for Windows. End results however, tend to make this user feel as though Linux is a toy OS, with lots of work still needed. Ubuntu, is good for some situations, and a cutting edge Distro such as SabayonLinux, is also not without its quirks(but 'feels' very simular to Windows Vista.).

    The end result is: what do *you* expect from a free OS ? Personaly, I like each, for different reasons, but still consider Windows to be the only real serious OS, mainly because of support for many, if not nearly all forms of hardware. Look and feel also are a consideration, but Linux has been closing the gap here, for a long time now.

    Anyhow, that 'handful of users' is growing day by day, and is not really a 'handful' any more.
  • MrWizard6600 - Monday, April 2, 2007 - link

    I could really use to see one. I don't see the differances between this board and a regualar 680i chipset, aside from the northbridges being different (which you would think would impact total PCI-e lanes but... apparently not..).

    so can you put together a map?
  • sWORDs - Tuesday, April 3, 2007 - link

    Check this post, it's a dutch forum, but the first second and third table are english, and those are the ones you need.

    http://gathering.tweakers.net/forum/list_messages/...">http://gathering.tweakers.net/forum/list_messages/...
  • Gary Key - Monday, April 2, 2007 - link

    Let me see what we can create tomorrow.

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