MSI B450 Tomahawk Conclusion

The MSI B450 Tomahawk had a launch pricing of $120 but can be more commonly found for $100 which not only increases the ever important value factor but means the extra money saved can be allocated to other areas of system improvement such as storage. The B450 Tomahawk is an ATX sized entry-level offering, but when compared to other B450 options it's actually more mid-range and offers a host of price conscientious controllers as a result.

Performance on the whole for the B450 Tomahawk is modestly average in most of the areas. Where it shines is in the power consumption, where it is essentially the best AM4 board we've tested. By comparison, the audio performance wasn't so good, with it coming last out of all the ALC892 boards we've tested. 

The MSI Arsenal range of motherboard are primarily targeted at budget gamers and the Tomahawk is positioned as the best from MSI of this particular range. While it's been mentioned throughout much of the review that this board is the successor to the B350 Tomahawk, it's important to highlight the improvements MSI has done to keep their product range as progressive as possible for the consumer. The biggest win in this regard is the power delivery, but not just the componentry (which includes the replacement of NIKOS MOSFETs with those from ON Semiconductor), but MSI has implemented a much cleaner and seemingly more effective 4+2 power delivery with two high side and two low side MOSFETs per phase. The power delivery heatsink also gets a noticeable upgrade in terms of surface area on the top due to a newer extended design, as well as making the heatsinks themselves larger in size, heavier in mass and the B450 Tomahawk heatsinks now actually have fins instead of looking like lazy lumps of metal.

Another plus is the inclusion of two USB 3.1 Gen2 ports on the rear panel which MSI did omit from the last AM4 Tomahawk branded board. The superfast 10 Gbps capabilities come through a Type-A and Type-C port while the rear panel also features a further two USB 3.1 Gen1 Type-A ports and two USB 2.0 ports.

With a current retail pricing of $100, it's hard to ignore the B450 Tomahawk and offers users looking to build a good value gaming themed system with a solid foundation to build upon. The gap between the more budget B450 chipset and higher end X470 chipset boards is bridging ever closer, and this board is a good example of that.

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  • DrHansGruber - Tuesday, December 11, 2018 - link

    Gaming performance looks like it's taken a not insignificant hit compared to the B350 Tomahawk.
  • gavbon - Tuesday, December 11, 2018 - link

    That does seem to be the current trend from X370/B350 to X470/B450 from the testing. It's still within a 1-3% margin of error although more like 7% in Total War. This could be the developer changing the benchmark slightly with a game update which would make more sense, given the other gamers tested are more in line with other boards.
  • ianrumford - Tuesday, December 11, 2018 - link

    A cautionary tale.

    I just bought this board during Black Friday sales (~£90). Nice spec and good price. But.

    It came with the 120 bios installed but didn't recognise both 16GB sticks of my
    G.Skill 3200 Trident Z for AMD ("TZRX"). I got the board to boot with just one stick though at 2133.

    The latest bios (130) includes support for AGESA 1.0.0.6 which has better memory compatibility.

    I used the bios m-flash utility to upgrade to 130 and all seemed well till
    around 70% when I was briefly called away and returned to find a blank screen. The board did not boot.

    The Tomahawk has a well-advertised feature call BIOS Flashback where you can recover the bios
    using the special hardware port that takes a FAT32 usb with the bios on it.

    The marketing collateral on Newegg says of BIOS Flashback:

    "Run into trouble when updating your BIOS? Simply flash the old BIOS version
    back and continue gaming within minutes with BIOS Flashback+. BIOS Flashback+
    even works without a CPU, memory or graphics card installed!"

    But the board refused to even load the 130 bios. Googling around this seems to suggest
    there is something wrong with the bios file.

    I tried to (re)load the 120 bios using flashback. This bios loaded in the way the
    manual says it should, but the board still did not boot.

    I've tried the other two bioses available on the MSI website and while they seem
    also to load ok, still no joy.

    I opened a call with MSI tech support and they have confirmed pretty much that
    BIOS Flashback does not always work.

    I've contacted the reseller to negotiate a replacement. In UK law a product that
    does not do what it claims to be able to do is not of "merchantable quality".
  • gavbon - Tuesday, December 11, 2018 - link

    Sorry to hear you've had that experience! It sounds more like a straight RMA and swap to me, but obviously, I cannot speak on behalf of the manufacturer. If I had the same issue which these things can happen, I would RMA too. Where did you buy it from? Are they willing to replace the board?
  • ianrumford - Tuesday, December 11, 2018 - link


    Hi,

    I'd rather not say at this point who the reseller until they have had a chance
    to step up to the plate. I think they are UK-only. I've bought from them before
    and they gave good prices and good service although I've never had to return
    anything.

    There are a few observations I'd make though, two MSI-specific and one more
    general.

    First is the MSI marketing folk are over-egging the product in a way the tech
    folk can't deliver on.

    Second is their testing of new bioses: the latest (130) bios failed for me both to
    flash and even be recognised as valid for flashback.

    Third is the more general point of how fraught bios update still seems to be.
    Its been a while since I built a new system but have been surprised how many
    reports there are of updates failing, even though technologies like dual bios
    and flashback have become more common. That's qualitative of course and I've
    never seen any stats on update failures. Also I've never written any code for
    hardware so have no idea of the challenges faced writing an utterly paranoid
    update process. Perhaps the development and/or testing time is just too
    expensive and maybe its cheaper for manufacturers just to take the hit on RMAs.
  • Wingartz - Tuesday, December 11, 2018 - link

    i had an issue like that also with MSI but the X58 mobo (damn those mobos) flashed via usb to the newest version and it bricked right away, searched in Google and found that specific model always got bricked when flashing via usb, it seems after all this years they have't got the issue solved
  • plonk420 - Friday, December 14, 2018 - link

    wowch, that was an expensive board to brick
  • rocky12345 - Monday, December 17, 2018 - link

    That is why I like boards like Gigabyte and their dual bios because if something goes wrong you just flip the switch and are up and running again. On my own Gigabyte board my second bios is something like version 1 since I have never flashed the second bios on it ever just the main bios which has always worked like a charm so far.
  • OolonCaluphid - Wednesday, December 12, 2018 - link

    I have the MSI B450m Mortar - the mATX little brother for this board.

    I also have absolutely no joy getting it to play with my DDR4 3200mhz ram - Kingston Hyper X. It works perfectly with my 32gb 3000Mhz Kingston Hyper X kit, however. So I refuse to believe claims that these boards support 3466Mhz ram, unless it's on the QVL list and also you get a bit lucky.

    Sound quality is also poor, but that's not a problem for my uses.

    Sorry to hear of your BIOS problems. real PITA. Here's hoping the retailer see you right.
  • 3DoubleD - Wednesday, December 12, 2018 - link

    I'd second that. I really think Anandtech should run an article on this because it took me a bit by surprise, although I had heard of compatibility issues.

    I recently put together a Ryzen 2600x + Gigabyte Gaming 7 + 2x16GB DDR3200 system and what a pain it is to get memory running at the correct speeds. I even carefully grabbed a RAM kit that was listed on Gigabyte's qvl list for the board at the rated speed, but even after bios update the XMP did not boot.

    Eventually I used one of the Ryzen ram timing calculators and got it to boot at 3200 MHz, but I had some stability issues so I dropped to 3133 MHz with slightly faster timings (probably not much of a performance tradeoff).

    Apparently you need to buy Samsung B-die dimms, but I had a really hard to finding any during black friday sales and got a good deal for the kit I ended up buying (that was supposedly tested by Gigabyte at the rated speed and timings).

    Anyway, a RAM buyers guide for AMD systems would be worthwhile IMO because it is NOT as straightforward or plug & play as you'd think it would be in 2018 (almost 2019).

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