ASUS P5B-E: Board Layout and Features

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After viewing the Abit AB9-Pro, the layout on the ASUS seems almost mundane. However, we have no real complaints about the layout except for the location of the IDE port and 24-pin ATX power connector. We feel like the IDE port connector should have been placed next to the floppy drive connector or replaced it. It would have been nice to have the 24-pin ATX connector located further to the right behind the memory slots. The motherboard was very easy to install and remove from our case. The four fan headers were within easy reach and can be controlled by the Q-Fan utility. The P5B-E replaces the P5B model. We tested both the 1.01G and 1.02G revision level boards and they are identical except for the BIOS changes and a PLL controller. Both boards feature an excellent three-phase voltage regulator power design along with high quality capacitors that yielded exceptional stability.


The DIMM module slots' color coordination is correct for dual channel setup based upon the premise of installing DIMMs in the same colored slots for dual-channel operation. The memory modules are slightly difficult to install with a full size video card placed in the PCI Express x16 slot. The 24-pin ATX power connector is located along the edge of the board along with a series of capacitors for the memory modules. We would have moved the 24-pin ATX connector to the upper right corner of the board to allow for easier access to the memory modules and CPU area in our case. It would also help to facilitate installation of PSUs with cables that are not longer than normal.


The four primary Intel ICH8R SATA ports are red along with the two secondary ports being black. These ports are conveniently located to the left of the ICH8R Southbridge and right of the battery and IDE port connector. We found the positioning of the SATA ports to be excellent when utilizing either the PCI-E x1 or PCI 2.3 slots. The ICH8R is passively cooled with a low rise heatsink and remained cool to the touch throughout testing.

The black floppy drive connector is located on the edge of the board and should have been switched with IDE port connector, as IDE cables are used far more than floppy cables these days. This switch would have eased installation of the IDE cable when using both the IDE and SATA ports. The clear CMOS jumper is color coded blue and is located in between the floppy drive connector and ICH8R chipset. This jumper was very difficult to use when utilizing a double slot video card. The chassis panel is located at the far left corner of the board.


The board comes with (1) physical PCI Express x16 connector, (3) PCI Express x1 connectors, and (3) PCI 2.3 connectors. The layout of this design offers an excellent balance of expansion slots and provides very good clearance for most of the slots. When utilizing a double slot video card the first PCI slot is physically blocked and cannot be used. However, this still leaves two open PCI slots for use and all three PCI Express x1 slots. The black JMicron SATA port is on the right edge of the board along with the Firewire, COM1, and USB headers.

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Returning to the CPU socket area, we find an ample amount of room for alternative cooling solutions that include most air and water cooling solutions. The Intel P965 MCH chipset is passively cooled with a mid-rise heatsink that did not interfere with any installed peripherals. This heatsinsk kept the MCH temperatures in check so that additional chipset voltage was not a factor in our overclocking tests. ASUS places the 4-pin ATX connector in the upper right section of the board and out of the way of the CPU area.


The rear panel contains the standard PS/2 mouse and keyboard, Parallel, LAN, and four USB 2.0 ports. The LAN (RJ-45) port has two LED indicators representing Activity and Speed of the connection through the Attansic L1 Gigabit PCI-E chipset. The audio panel consists of 6 ports that can be configured for 2, 4, 6, and 8-channel audio connections for the ADI 1988A HD codec. The panel also has two S/PDIF (optical out/coaxial out) ports, and an external SATA 3Gb/s port via the JMicron JMB383 chipset.

Asus P5B-E: Feature Set Asus P5B-E 1.01G: Overclocking
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  • smn198 - Monday, October 23, 2006 - link

    quote:

    we utilize a four hard drive setup and a three drive combination for our RAID 5 testing

    Would you be able to re-run using 4 drives for all of the tests please?
  • jonp - Sunday, October 22, 2006 - link

    -- “…budget sector and includes boards from ECS, Foxconn, Intel, and Gigabyte.” – will the MSI P965 Neo-F be in this set?

    -- the Abit AB9 Pro feature set does not show the eSata port on the SI 3132 (two SATA). it does show a serial port on the i/o panel but not one in the picture.

    -- The Biostar feature set shows 4 USB on the i/o panel when there are six in the picture.
  • JarredWalton - Sunday, October 22, 2006 - link

    Fixed - thanks.
  • powchi - Saturday, October 21, 2006 - link

    Can I use a 20-pin power supply on these boards since all are using 24-pin connectors? Or will I be needing 20pin to 24pin adaptor?

    The PSU is an Enermax NoiseTaker EG475P-VE SFMA 470W ATX 12V v1.3.
  • Aikouka - Sunday, October 22, 2006 - link

    Some motherboard manufacturers will no longer support your motherboard if they find out you've been running it with a 20-pin ATX plug or a 20->24-pin adapter. Just be safe and get a newer PSU :). I know DFI will no longer support the motherboard if it specifically asks for a 24-pin.
  • JarredWalton - Saturday, October 21, 2006 - link

    Technically, yes you can use 20-pin PSUs. Will they work, and will the system be stable? That varies. I haven't had any issues on the systems where I've done it, but if you do high overclocking it will likely become a serious issue.
  • powchi - Saturday, October 21, 2006 - link

    Jarred,

    So there's no need to use a 20pin to 24pin adaptor? What are the differences when using and not using an adaptor? Thanks.
  • lopri - Sunday, October 22, 2006 - link

    No. As a matter of fact, the adapter should be avoided. Just plug the 20-pin connector to 24-pin receptacle with 4-pin left empty. Like Jarred said, it should work in theory and it does in practice. However, the quality of PSU and how intense is one's OC can affect the (long-term) stability.
  • JarredWalton - Sunday, October 22, 2006 - link

    I suppose the adapter *could* help, as it ensures power is available on all the 24-pins, but you're still taking the power from the same source so depending on how that works out it can actually make things worse. I would typically say that if you have a 400W or better PSU you should be fine with little to moderate OC'ing even with 20-pins. (I have an OCZ ModStream 450W that certainly works fine in a 939 board with a decent 2.0 to 2.6 GHz overclock.)
  • lopri - Sunday, October 22, 2006 - link

    Yes! Not to brag about myself or anything, but I went through countless Socket 939 Opterons on DFI NF4 SLI-D with original Antec TruePower EPS12V (20-pins, not the TP2 with 24-pins) including an Opteron 165 @3.0GHz (9x333). TCCD up to 325MHz/2.5-4-3-8! The setup was absolutely stable.

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