Dell Precision 7875 high-end workstation in review: AMD Ryzen Threadripper PRO 7995WX with 96 cores and Nvidia RTX 6000

The Precision 7865 Tower Workstation is a high-performance workstation from Dell. With the addition of the latest AMD Ryzen Threadripper processors from the 7000 series, the workstation now supports up to 96 computing cores and 192 threads. Beyond this, it boasts up to 1,024 GB RAM and is equipped with two high-end workstation graphics cards, making it well-suited for exceptionally demanding tasks. 

We had the opportunity to test the new high-end workstation, which features the AMD Ryzen Threadripper Pro 7995WX with 512 GB RDIMM and a 4 TB SSD. Additionally, the system incorporates two Nvidia RTX 6000 Ada Generation graphics cards. Although there is no official price information for the test system, a detailed look at the prices indicates a mid-five-digit range for the test configuration. These units are not intended for home use but find their niche in commercial environments where substantial computing power is essential, and time is money. In the long run, such systems can prove cost-effective if the time saved justifies the investment.

Of course, Dell does not only provide the top model; the systems may be customized and adapted to specific needs through the store's configuration options.

Dell provided us with the opportunity to remotely test the Dell Precision 7875 Tower Workstation. Regrettably, this meant we did not have direct access to the hardware. The connection to the test system was established through Parsec, resulting in a slight loss of performance, as noted by Dell. However, this loss is expected to be in the low single-digit range. The active connection also has an impact on 3D performance. Unfortunately, not all tests could be conducted as it was often impractical to initiate the 3D application via Parsec. Additionally, we are unable to provide information on the emissions of the test unit.

The Dell Precision 7875 Tower Workstation excels during the stress test of the Cinebench R15 Multi Loop, delivering an outstanding result. Throughout the 50 runs, we observed only slight fluctuations in performance, ruling out any significant drop in power with steadily decreasing capabilities. Telemetry data reveals that the processor can be consistently operated at the maximum power of 350 watts without encountering issues. Additionally, the system demonstrated stable performance in stress tests involving the Cinebench R20 Multi Loop and the Cinebench R23 Multi Loop.

The synthetic tests conducted with the test system indicate that the substantial number of computing cores cannot be fully leveraged, resulting in the system struggling to outperform its competitors. While the Dell Precision 7875 Tower emerges victorious in a direct comparison with the Lenovo ThinkStation P620 based on the AMD Ryzen Threadripper Pro 3995WX, the most significant advantage lies in the RAM tests. The octa-channel operation of our test system allows it to assert a clear lead with impressive values. The installed RDRAMM, clocked at 4,800 MT/s, is notably large at 512 GB. Furthermore, the RAM boasts ECC support, a feature expected as standard in the workstation sector.

Dell has equipped the Dell Precision 7875 Tower Workstation with two Nvidia graphics cards, specifically RTX 6000 models from the current Ada generation, each boasting 48 GB of VRAM. Due to potential difficulties with multiple GPUs in some tests, we conducted the tests with a single graphics card. The graphics chip employed is the AD102 in full configuration, featuring 18,176 shaders. Notably, the Nvidia GeForce RTX 4090 utilizes a slightly smaller model, with Nvidia limiting the power consumption to 300 watts. In contrast to the Nvidia GeForce RTX 4090, the RTX 6000 employs standard GDDR6 VRAM with a slightly lower memory bandwidth.

During our testing, the results were somewhat subdued compared to our other test systems. It's important to reiterate that the full 3D performance couldn't be replicated due to the test environment limitations. However, the Nvidia RTX 6000 Ada Generation shines in render tests, showcasing significant performance gains in some instances. Depending on the review, we observe up to a 96 percent power increase compared to an Nvidia GeForce RTX 4090. This highlights the substantial impact of driver optimizations, unfortunately limited to professional workstation GPUs. 

The Dell Precision 7875 Tower Workstation also supports AMD's Radeon PRO graphics cards. The current flagship, the AMD Radeon Pro W7900, offering 48 GB of VRAM. 

For additional comparisons and benchmarks, please consult our GPU comparison table.