ASRock Rack TRX40D8-2N2T Power Consumption
Power consumption can vary a significant amount depending on processors used and the number of HDDs/SSDs/Expansion cards used. Here we test just a primary system with a midrange NVIDIA RTX 2080 Super card installed in a PCIe Gen4 slot. Power is measured at the wall and the graphics card and SSD were not stress tested. Here is a sample of what we saw with the three different CPUs on 120V power:
- 3990X Idle: 144W
- 3990X Load: 606W
- 3970X Idle: 139W
- 3970X Load: 447W
- 3960X Idle: 139W
- 3960X Load: 442W
These are in-line but a bit higher than what we saw on some of the consumer platforms. To us, that makes sense. These have higher-end networking as well as the ASpeed AST2500 BMC onboard that are using extra power. Still, these are relatively close to what we saw in our consumer platform reviews so they make sense. They are also higher than we typically see on the server-side, although we usually cannot add a GPU in those systems. We had to make a call to make the test platform align more closely with what we used for the previous Threadripper work or the EPYC work, and we chose to align with workstation testing since the PCIe Gen4 slots are a major feature and we can see this solution being used with one or more GPUs often.
ASRock Rack TRX40D8-2N2T Market Impact
Perhaps the most intriguing but about this solution is that one can use relatively high-clock speed CPUs for a relatively low price.
When looking at the AMD Ryzen Threadripper 3990X, this may actually be the least attractive solution. With 64 cores many will want more than 8x 32GB for 256GB of RAM. Instead, the AMD EPYC 7702P is only a bit more costly. One trades lower clock speeds for more memory channels and bandwidth. One also gets a full set of PCIe lanes. The easy way to put it is that one does sacrifice platform expandability and performance for CPU performance.
The story changes a bit with the Threadripper 3970X. With that SKU, we have a 32 core processor with 4-channel memory. It is somewhat analogous to the AMD EPYC 7D12 which is an off-roadmap 32 core part from AMD. Here though, AMD EPYC 7502P is simply not as fast in many non-memory bound workloads. Again, we have the PCIe and memory expansion limitations, but they are less acute than they might be with 64 cores.
We still want a desktop version of the AMD EPYC 7H12. We will have a review of those chips in the very near future. By not releasing a high-clock speed 280W EPYC part for workstations, it leaves room in the market for solutions such as the TRX40D8-2N2T.
There is also relatively limited support. For example, we are unlikely to see this solution certified by VMware or for Windows Server, so support options there are limited. For the target market, that is unlikely to be a big deal. We still need to point it out since that is something that can limit the appeal.
With all of that said, for those who want something unique in their dedicated hosting clusters, or simply to run CPU-based render farms, the combination of the various Threadripper CPUs with the TRX40D8-2N2T will likely be a game-changer. A key challenge is the manageability of the Threadripper platform which is exactly what the TRX40D8-2N2T addresses.
Something must be said for innovation here. At STH, we can completely see the desire to put Threadripper into servers. It is not 100% of the server market that would consider this an ideal solution, but it is likely enough of a niche out there that has been desiring the same thing since Threadripper launched.
ASRock Rack did an excellent job with the TRX40D8-2N2T. One can see design challenges that were overcome such as putting DIMM slots where a normal ATX chassis-motherboard standoff would be.
Little touches on the motherboard such as having three double-width PCIe Gen4 x16 slots plus an x8 slot, having NVMe storage options onboard including M.2 110mm for larger SSDs, but the networking stood out. ASRock Rack did not go with low-cost networking solutions. The choice of the Intel i225 plus Intel X710 was something we would not expect from this platform, but it was another bold design choice.
We did not get an official MSRP but street pricing seems to be around $700 USD. That is a slight premium over similar motherboards with higher-end networking solutions like the X710. An Intel X710-T2L network adapter alone retails for over $300 and that functionality is integrated here. We would have liked to have seen a lower price, but it something we understand given the market segment. Frankly, if you want to put a Threadripper 3990X, a $4000 CPU, in a server platform with lots of extra features, then the motherboard is going to cost more.
There is a certain audacity for ASRock Rack to even attempt a project like this, and it was clearly driven by customer demand. There is a segment of the market that wants the clock speeds of Threadripper and that does not need the platform expansion of EPYC, yet wants manageability. At STH, we applaud taking risks such as building a platform like this as it gives those who have unique infrastructure vision tools to build something different.