Biostar PT880 Pro-A7 Combo

Biostar designed a decently laid out board with all major connections easily reached except for the floppy drive and IDE connectors. The Biostar layout provides very good clearance for cards and components while being easy to install in a mid-size ATX case. We were also impressed with Biostar utilizing a red PCB for this board design.

The DIMM module slots' color coordination is based upon DDR2 or DDR operation. The white slots are designed for DDR2 modules and the blue slots for DDR modules. The memory modules are slightly difficult to install with a full size video card placed in the AGP graphics slot.

The VIA VT8237R floppy drive and IDE port connectors are located to the left of the battery and did not present any connection issues in our mid-size ATX case, but having these ports at the bottom of the board could present cabling and cooling issues in larger cases. The chassis fan header is located to the right of the battery.

The VIA VT8237R SATA ports are located above the IDE connectors. The SATA ports feature the newer clamp-and-latch design. Unlike other recently reviewed boards, the SATA ports are not color-coded for primary and secondary operation, though that is a minor concern. We found the positioning of the SATA ports to be very good when utilizing the PCI slots or IDE port connectors.

The VIA VT8237R chipset is not passively or actively cooled while being located above the SATA ports. The VIA USB connectors and chassis panel are located to the left of the VT8237R chipset.

The board comes with (1) AGP 3.0 connector, (1) physical PCI Express x16 connector, and (4) PCI 2.2 connectors. The layout of this design offers a very good balance of expansion slots for a value board.

The orange AGP 3.0 connector is located first, the yellow physical X16 connector is located next, and these are followed by the (4) 32-bit PCI slots. We did not have any issues installing our NVIDIA 6800 Ultra in the AGP 3.0 slot, though this configuration will physically render the X16 PCI Express slot useless. We did not have any issues utilizing this slot with video cards containing single slot cooling systems.

On the PCI Express side, we were also able to install our EVGA 7800GTX 512MB or ATI X1900XTX video cards in the X16 slot without difficulty. This configuration will physically render the first PCI slot useless. Naturally, utilizing this slot with video cards containing single slot cooling systems did not pose any problems.

Returning to the CPU socket area, we find ample room for alternative cooling solutions. We utilized the stock Intel heat sink, but we also verified that several aftermarket cooling systems such as the Thermaltake Big Typhoon would fit in this area during our tests.

The VIA PT880 PRO chipset is passively cooled with a low rise heat sink unit that did not interfere with any installed peripherals. In fact, this unit kept the chipset cool enough that additional chipset voltage was not a factor in our overclocking tests.

Biostar places the four-pin 12v auxiliary power connector at the top of the CPU socket area, but out of the way of most aftermarket cooling solutions. The 20-pin ATX power connector is located above the PT880 PRO chipset and next to CPU fan header. This 20-pin connector is located in a difficult position and can hamper airflow with cabling that crosses over the CPU heat sink/fan.

Due to the location of the CPU fan header, users with 24-pin ATX connectors that cannot be split apart (i.e. detach the extra 4-pin connector) will not be able to use their power supplies without an adapter. Biostar utilizes a 3-phase power regulation system that did not create issues in our testing, but we notice V-core voltage fluctuations when trying to overclock the board.

The rear panel contains the standard PS/2 mouse and keyboard ports, parallel port, serial port, LAN port, and 4 USB ports. The LAN (RJ-45) port has two LED indicators representing Activity and Speed of the connection. The audio panel consists of 3 ports that can be configured for 2, 4, and 6-channel audio connections.

Basic Features Biostar PT880 Pro-A7 Combo: Overclocking
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  • Rza79 - Wednesday, March 22, 2006 - link

    I would say the Asus P5VD1-X is a 10x better option than this board.
    - PT880Ultra instead of PT880Pro
    - Asus doesn't use OST caps
    - gigabit lan controller
    - space in between the AGP and PCI-E slot so you can actually put two cards
    - can be found as low as 50 euro

    It would be nice if you reviewed this board too. I used it and it really did good.
  • Marlin1975 - Wednesday, March 22, 2006 - link

    Thats the PT880 board I am running now. It does not have voltage mods for the CPU but I was told the next Bios update will fix that. :)
  • Per Hansson - Tuesday, March 21, 2006 - link

    Gary, sigh, I whined about this in your Epox review and I'll do it in this one too

    The Caps used on the board for the VRM section are excellent brand by United Chemi-Con, for the smaller caps they used the crap-brand OST that will prolly fail within the boards useful life if they are installed in any high ripple areas, which they seem to be (chipset, memory and expansionslots....) Please atleast provide pictures where you can read the make and model of the caps

    Next; PCI-E 4x has low bandwidth; well, compared to AGP 3.0 it is 2.0GB/s, and guess what, AGP 3.0 has 2 GB/s too... So the issue is not with too little bandwidth but something in the implementation...

    Most serious is the fact that there is no mention about the fact that the VT8237R does not support SATA2 harddrives, i.e. they do not work at all with it! Only the VT8237R+ support SATA2 properly, this is a design issue in the following chipsets: VT8237, VT8237R, VT6420 and VT6421L

    http://www.theinquirer.net/?article=24910">http://www.theinquirer.net/?article=24910
  • Rza79 - Wednesday, March 22, 2006 - link

    While i know OST caps are cheap and come from Taiwan, still i have to see a blown up one. Asrock is using them from the start and those first boards are still working good for me. Still, better ones are good but OST isn't crap but just worse. Big difference.

    PCI-E 4x has 2GB/s bandwidth in total, what means 1GB/s per direction. So it can read 1GB/s and write at 1GB/s. Since these stuff are reading most of the time ...
    AGP can use it bandwidth in both directions meaning it can read at 2GB/s or write at 2GB/s. But the benchmarks do show that 1GB/s for reading is just not enough for these highend cards.

    About the Sata2 incompability. The southbridges you mention do have a detection issue. But any Sata2 hdd can be to Sata1 by jumper. When you do that, they will just work. Actually hdd's from Samsung, ... are set to Sata1 by default and have to be set manually to Sata2 by jumper.
    All the lastest Via boards i got from Asus (last month) had the Plus version of the southbridge, so you don't need to bother any longer about it either.
  • Gary Key - Friday, March 24, 2006 - link

    "Next; PCI-E 4x has low bandwidth; well, compared to AGP 3.0 it is 2.0GB/s, and guess what, AGP 3.0 has 2 GB/s too... So the issue is not with too little bandwidth but something in the implementation...

    Most serious is the fact that there is no mention about the fact that the VT8237R does not support SATA2 harddrives, i.e. they do not work at all with it! Only the VT8237R+ support SATA2 properly, this is a design issue in the following chipsets: VT8237, VT8237R, VT6420 and VT6421L "

    The PCI-E 4x comments have been clarified by RZA79 already. Our features chart and text clearly indicated the VIA VT8237R was a SATA 1.5Gb/s controller. However, I obviously did not clearly state this in the article. :) I updated the Final Words section based upon your comments. In our testing with this controller, our Maxtor, WD, Seagate, and Samsung 3Gb/s drives all worked fine with the jumpers set to 1.5Gb/s. Thanks!!!
  • Per Hansson - Wednesday, March 22, 2006 - link

    Yea right, OST is great...

    ASUS P5GDC-V DELUXE LGA775
    http://www.badcaps.net/forum/showth...ghlight=p5gd...">http://www.badcaps.net/forum/showth...ghlight=p5gd...
    Shuttle MS50N s478
    http://www.badcaps.net/forum/showth...highlight=ms...">http://www.badcaps.net/forum/showth...highlight=ms...
    MSI MS-6741 s754
    http://www.badcaps.net/forum/showth...7&highli...">http://www.badcaps.net/forum/showth...7&highli...
    Matsonic MS8318E s462
    http://www.badcaps.net/forum/showth...1&highli...">http://www.badcaps.net/forum/showth...1&highli...

    I had no idea about the PCIe bandwidth info... Interesting to say the least

    And last, I bought a friend a 500GB Seagate Barracuda, it did not get recognized by his mobo (8237 southbridge) I contacted Seagate by phone, the tech said I was supposed to put a jumper between two of the pins, it did not help, so I had to buy him an external controller
  • Per Hansson - Wednesday, March 22, 2006 - link

    Sorry, links trancuated...

    ASUS P5GDC-V DELUXE LGA775
    http://www.badcaps.net/forum/showthread.php?t=843">http://www.badcaps.net/forum/showthread.php?t=843

    Shuttle MS50N s478
    http://www.badcaps.net/forum/showthread.php?t=481">http://www.badcaps.net/forum/showthread.php?t=481

    MSI MS-6741 s754
    http://www.badcaps.net/forum/showthread.php?t=1127">http://www.badcaps.net/forum/showthread.php?t=1127

    Matsonic MS8318E s462
    http://www.badcaps.net/forum/showthread.php?t=251">http://www.badcaps.net/forum/showthread.php?t=251
  • Wonga - Monday, March 20, 2006 - link

    From this review, you can certainly see that AMD made a good choice going for an IMC - relying on VIA, they'd always be in second place.

    Not that VIA chipsets are bad to use, but they certainly aren't the quickest...
  • lemonadesoda - Monday, March 20, 2006 - link

    Something isn't quite right here. If you want to provide an upgrade path for basic users, start with what they have already:

    1./ CPU - 478 (this is an intel example)
    2./ GPU - AGP
    3./ Memory - DDR

    And cost/price of the original components (and their new replacements) IS IN THAT ORDER. What's the point of throwing away your most expensive components and recycling only the lowest value ones? Not much really.

    The design criteria should be to get maximum gain from minimum investment. And to me that would suggest upgrading, in this order:

    A./ Increase memory
    B./ GPU
    C./ Other software or hardware speed-me-ups
    D./ Maybe CPU if you have a pooooor humble one. Either you buy a second hand CPU on ebay, or you might as well start with a brand new up to date platform

    Not on the list, would be to change memory format DDR vs DDR2 (since this ain't going to give you any more practial or noticeable speed)

    Therefore, for the budget conscious upgrader, what is needed is a mainboard that will allow them to do upgrade A and B at minimum cost. ie a mainboard with PCIe16 and socket 478 and SIX DDR memory slots. (SIX Slots allows the upgrader to use existing too-small DDR sticks and add a couple more)

    I believe ASUS and ASROCK did a socket 478 and PCIexpress, but guess what, only 2 RAM slots. Brainless.
  • Missing Ghost - Tuesday, March 21, 2006 - link

    yeah bright, 6 dimms unbuffered memory!

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