Chaintech VNF4-Ultra: Features and Layout

 Specification  Chaintech VNF4-Ultra
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 Auto, 0.90V to 1.70V in 0.025V increments
DRAM Voltage Default, 2.7V, 2.8V, 2.9V
Chipset Voltage Default, 1.6V, 1.65V, 1.7V
Hyper Transport Ratios 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 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 Memory to 4GB Total
Expansion Slots 1 x16 PCIe Slots
2 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
No Firewire
Onboard LAN Gigabit PCIe Ethernet by Vitesse VSC8201 PHY
Onboard Audio Realtek ALC850 8-Channel codec with 6 UAJ audio jacks, CD-in, front audio, and optical SPDIF
Other Features AMD Dual-Core (X2) Support with 5/18 Beta BIOS
BIOS Award 6/03/2005

The Chaintech was one of the motherboards that we had looked forward to testing. It is very inexpensive, and the last Chaintech that we tested, the Socket 754 VNF3-250, was an Editors Choice for value. Chaintech has repeated an outstanding selection of useful overclocking adjustments in the VNF4-Ultra BIOS. The features are also first rate for an Ultra board selling for $89 street price, with Firewire being the only missing feature of importance to some buyers. Even the excellent NVIDIA "any-drive" RAID for SATA 2 and IDE is fully supported, along with the standard NVIDIA chipset-based Firewall and LAN features. Chaintech has also implemented a really nice boot screen option. When selected in the BIOS, the boot screen shows post codes during boot so that you can see exactly what is going on and where problems might be.


Click image to enlarge.

While a little smaller than the other nF4 Ultra boards, Chaintech has compensated with a different layout that works very well in most cases. The 4 DIMM slots move to the top, with the Socket 939 moved towards the center of the board. This allows Chaintech to place almost all the storage connectors on the right edge of the board where they usually work best. SATA and IDE are well clear of the PCIe slot. The nF4 floppy connector is at the lower right of the board - not the best location, but much better than at the bottom of the board.

The only real compromise that Chaintech made with the smaller board was placing the 24-pin ATX and the 4-pin 12V between the CPU and rear panel connectors. No matter how you run the bulky 24-pin cable, it gets in the way of something - memory or CPU or IDE/SATA connections - and none of the routing options is really a great choice. Chaintech builds to a price point, and if this is the concession that had to be made for performance, we will find a way to live with it. That doesn't mean that we have to like it though.

At first, we thought that Chaintech had omitted an optical or coaxial SPDIF port, but looking closer, we found that the top left audio port (the blue connector) does double-duty as an optical SPDIF out port.

When we first received the Chaintech for evaluation, it was supplied with a passive heatsink for the single-chip nForce4 Ultra chipset. Chaintech sent an announcement that they had updated the design for active chipset cooling due to high temperatures with the nF34 chipset. Soon thereafter, we received an active cooling kit for the VNF4-Ultra that was a very easy installation. Chaintech tells us that current boards should be equipped with active cooling for the chipset.

Biostar NF4UL-A9: Overclocking and Stress Testing Chaintech VNF4-Ultra: Overclocking and Stress Testing
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  • yacoub - Wednesday, July 6, 2005 - link

    #33 - Wesley, that's awesome news. Can you post that somewhere more important so buyers know to be on the lookout for it? =)
  • kyparrish - Wednesday, July 6, 2005 - link

    Good article!

    I'm seriously considering dumping my DFI S754/NC 3200+ setup for that Epox board and a cheap S939 A64 :)
  • Wesley Fink - Wednesday, July 6, 2005 - link

    #29 and #31 - UPDATE: I have talked with contacts in the Memory Industry and Samsung TCCD is now available again from Samsung. TCCD disappeared for a few months but production didn't really stop. TCC5 is DDR466 and TCCD is DDR500, but both chips come off the same line and are binned for speed grade. Samsung stopped binning for DDR500 grade until recently - and left this job to the memory makers.

    Recently Samsung has told memory makers they are binning once again for DDR500/TCCD and the TCCD chips are available again. It will take a few weeks for the pipelines to fill but TCCD is not dead. Some companies are staying with TCC5 at a lower cost and binning for the top performance unless the yields start to go down.
  • Wesley Fink - Wednesday, July 6, 2005 - link

    #24 - The base nForce4 is sometimes called the nForce4 X4 and runs at 800 HTT, while the Ultra and SLI run at 1000HT. When 1000HT was first introduced we found no real difference in performance at 800HT and 1000HT. What the 1000HT did provide was quite a bit more overclocking headroom. A reader may have an example of where 1000HT outperforms 800HT but the real world difference is negligible.

    #28 - There are now more than 60 BIOS releases for the DFI nF4, many customized for particular memory types. Only 3 have been posted to their website. For the latest DFI nF4 BIOS a good place to check is www.xtremesystems.org or the BIOS Files Forum at www.bleedinedge.com. There is now a 7/04 BIOS that is reported to be more stable in upper memory ratios (433,466,500) with Rev. E chips.

    #29 - You are overstating the TCCD situation. Corsair still sells TCCD, as do several other memory vendors. There is no doubt TCCD is drying up everywhere but Corsair, and that will continue. New TCC5 dimms that are said to perform like TCCD are in process in at least one memory company. We have requested these new TCC5-based dimms and will share our findings as soon as we receive the memory. There are also some new BH5 dimms that we thought were gone forever. We have even seen the new BH5 binned and advertised as DDR500 2-2-2 at higher voltages around 3.3V.
  • yacoub - Wednesday, July 6, 2005 - link

    Well, while this review -has- convinced me to go with the DFI board over the Chaintech, that is purely due to the audio CPU usage issues of the onboard vs daughterboard. I'm shocked at how much difference that makes.

    That said, most of the memory testing (and thus most of the review) was meaningless to me (and everyone else who doesn't have access to TCCD memory anymore). =/
  • Wesley Fink - Wednesday, July 6, 2005 - link

    #17 - Thanks for pointing out the errors. They have been corrected. Do you want a job proof reading :-)

  • yacoub - Wednesday, July 6, 2005 - link

    Regarding the tRAS recommendation:

    Can we petition Anandtech to stop using memory that the consumer can't get anymore? (Namely TCCD-based Plat Rev2.) Go pick up some TCC5 and do your tests with what the consumer is actually going to be receiving so your tests actually mean something.
  • mongoosesRawesome - Wednesday, July 6, 2005 - link

    What BIOS version did you use with the DFI? It reads: "Award 7/01/2005 Release" in your list of features for the DFI, but I could not find that BIOS release on their website.
  • AsiLuc - Wednesday, July 6, 2005 - link

    Sorry I meant: GA-K8NF9
    http://www.giga-byte.com/MotherBoard/Products/Prod...
  • AsiLuc - Wednesday, July 6, 2005 - link

    I'd liked to see the Gigabyte GA-K8NP9 reviewed, because it has passive southbridge cooling (silence :) ) and is cheap.

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