HP Z6 G5 A Workstation Review: 96-Core AMD Ryzen Threadripper Pro 7995WX Impresses

The HP Z6 G5 A, Ryzen Threadripper 7000 & Intel Xeon W9-3495X Test Bed and Setup

We used the following test systems for our AMD Ryzen Threadripper Pro 7995WX, Ryzen Threadripper 7980X/7970X, and Intel Xeon WS-series testing:

The two main aspects of power for a system like this are the idle and load measurements. For the CPU on its own, the Ryzen Threadripper Pro 7995WX is rated for a TDP of 350 W. For the system as a whole, however, we have the base power consumption with the GPU to consider, too. The official listing of the NVIDIA RTX A4000 16 GB included with the Z6 G5 A is a 140 W TDP, so a CPU+GPU combined should be around 490 W.

In our peak power test from our CPU suite, the AMD Ryzen Threadripper Pro 7995WX didn’t go beyond its 350 W TDP, with a peak output of 350.1 W. This is similar to the other Ryzen Threadripper 7000 processors we’ve tested, which also hovered around the rated specifications as far as power is concerned.

(Click to enlarge graph)

Looking a little deeper into the Ryzen Threadripper Pro 7995WX within the HP Z6 G5 A and how it performs in a benchmark, we ran the CineBench R23 multi-threaded test on a loop, with a focus on CPU package power and thermals. The maximum temperature we saw in this test was 93.5°C, which is within the processor’s TJMax of 95°C. We also observed that the CPU never exceeded the rated TDP of 350 W, with dips between the load intensities as it went in and out of each CB23 MT test cycle.

As the HP Z6 G5 A is a workstation and not specifically all about the CPU, we’ve also decided to include other tests to work out the power consumption of the other components, such as the NVIDIA RTX A4000 graphics card, as well as other devices such as cooling, fans, and the 2 x HP Turbo Z PCIe 5.0 x4 M.2 SSDs.

Screenshot from the HP Performance Advisor software

With both the CPU and GPU running intensive workloads simultaneously of each other (Prime95 with Small FFTs and FurMark 4K at maximum settings), we observed a maximum power draw at the wall of 567 W; this includes the CPU, GPU, and motherboard, and every other component installed into the system.

The following is the peak temperature of each component:

• CPU: Threadripper Pro 7995WX: 92°C
• GPU: RTX A4000: 80°C
• SSD 1/2: HP Z Turbo Drive: Both at 34°C

All of the components within the HP Z6 G5 A were within their rated specifications, and it’s clear that all of the system cooling, including the large CPU cooler, is doing its job. At full load, the system was noticeably audible, with all of the associated fans quickly ramping up to 100% as workloads were placed on it. This is understandable, given the intensity of the workloads placed on both the CPU and GPU.

Read on over to the next page for some compute performance comparison, including rendering, between the AMD Ryzen Threadripper Pro 7995WX versus the Threadripper 7980X, Threadripper 7970X, and the Intel Xeon W9-3495X processors.

To analyze the performance of the HP Z6 G5 A with AMD’s Threadripper Pro 7995WX 96C/192T processor, we’ve opted for a more cut-down version of our CPU 2024 benchmark suite. This is for two main reasons. The first reason is the HP Z6 G5 A is a workstation and, as such, is more designed for virtual production, rendering, AI and machine learning workloads. It’s unlikely a user buying an expensive top-of-the-range workstation will care about performance in Microsoft Office, etc. The second reason is closely associated with the first, rendering performance and relevant tests from our suite have been selected for the types of workloads that are likely to be run on a machine such as a workstation.

For comparison reasons, we are comparing the Threadripper Pro 7995WX against processors of a similar ilk, such as the Ryzen Threadripper 7000 series chips, including the 7980X (64C/128T) and 7970X (32C/64T). The other processor that is a direct competitor to AMD’s Ryzen Threadripper Pro (and Non-Pro) series is the Intel Sapphire Rapids Xeon W9-3495X (56C/112T), which, as previously mentioned, is AMD’s direct competitor by default.

We are using DDR5-5200 RDIMM memory on the Ryzen Threadripper Pro 7995WX, as per supplied by HP within the Z6 G5 A workstation. We also tested the Ryzen Threadripper 7980X and 7970X as per JEDEC specifications at DDR5-5200. For Intel’s Xeon W9-3495X, we are using DDR5-4800 RDIMM memory as per Intel’s JEDEC specifications. It should be noted that both platforms are run with their full allocation of memory channels, e.g., TR 7000 Pro in 8-channel along Intel’s Xeon W9-3495X Sapphire Rapids chip in 8-channel, while TR 7000 (Non-pro) is running with 4-channel memory.

Below are the settings we have used for each platform:

• DDR5-5200 RDIMM – AMD Threadripper Pro 7000
• DDR5-5200 RDIMM – AMD Threadripper 7000
• DDR5-4800 RDIMM – Intel Xeon Sapphire Rapids WS

Rendering

In rendering performance, specifically in multi-threaded tests, the Ryzen Threadripper Pro 7995WX has a distinct advantage over the rest of the field, mostly due to having more cores/threads available. While there is an advantage, the advantage on offer aren’t linear, and in CineBench 2024 MT, we can see an increase of around 6%. In CineBench R23 MT, this stretches to just 10% more, and given the 7995WX has 32 more cores than the 7980X, we can clearly see the performance isn’t linear.

Despite the core count difference, both chips have a 350W TDP, and this seems to be playing a big part in these results. With 50% more cores than the 7980X, the 7995WX would likely prefer to have 50% more power as well, to unlock its fullest potential.

Science and Simulation

We saw similar levels of performance between the Ryzen Threadripper Pro 7995WX (96C/192T) and the 7980X (64C/128T) in much of the benchmarks above, but the 7995WX did perform very well in y-Cruncher, where we saw 32% faster performance in the multi-threaded test. Single-threaded performance is limited due to having a slower base frequency than the other Threadripper 7000 chips tested. However, the Intel Xeon W9-3495X has the slowest of all the chips tested and, as such, sits at the bottom of the single-threaded performance rankings.

Encoding

In our short-form encoding suite, we can see having more cores doesn’t necessarily mean more performance, and encoding is one situation where having a strong balance between core/thread count, speed, and optimizations counts for more. In AV1 performance, AMD’s Zen 4 core seems to have the advantage, whereas in HEVC CPU encoding, Intel’s Xeon W9-3495X has a distinct advantage.

When it comes to workstations, a large number of them resemble conventional desktop systems on the outside, but inside, that isn’t the case. Workstation OEMs such as HP, Lenovo, and Dell compete at the high end, looking to provide their customers with the best solutions designed for highly intensive multi-threaded tasks. These include video editing, 3D rendering, engineering design, and machine learning/AI. Until now, most of the vendors optimized their workstations for previous generations of Threadripper, such as the Pro 5000 series and Intel’s current Sapphire Rapids-based Xeon W-3400 series. That could all be set to change…

Enter AMD’s latest Ryzen Threadripper Pro 7000 series, with all of the bells and whistles required for the latest and cutting edge workstation related tasks, with the Threadripper Pro 7995WX and 96C/192T of powerful and efficient Zen 4 goodness inside, looking to take the competition to Intel in the workstation market. Built on the foundation of their Zen 4 microarchitecture and fabbed on TSMC’s 5 nm node, AMD is looking to bridge the gap in the middle market between desktops (Ryzen 7000) and servers (EPYC 9004) with a powerful yet highly effective workstation platform for users to sink their teeth into.

While AMD has launched the Ryzen Threadripper Pro 7000 series through four OEMs (more than previous generations), this goes to show that OEMs are happy to hedge their bets on AMD’s Zen 4 workstation platform, especially as their customers are typically demanding when it comes to getting the most for their money. From HP’s perspective, the Z6 G5 A is their high-end premium workstation designed to bring the Ryzen Threadripper Pro 7995WX with 96 Zen 4 cores to the market, as well as offering a highly customizable system designed to tackle all of their customer’s needs.

When it comes to reviewing a workstation, it’s important to note that they aren’t designed for everyone, and users looking for maximum single-threaded performance will find the higher clocked desktop processors more to their liking; same uArch + higher core clock speed = better single-threaded performance. The crux of a workstation in regards to performance comes down to one key ingredient, and that’s multi-threaded performance. That is something AMD’s Ryzen Threadripper Pro 7000 WX series brings in spades. As well, underscoring that this is a part meant for use in managed corporate workstations, TR Pro 7000 comes with AMD’s PRO security features enabled for these parts. And for their part, HP includes their own Wolf Security software for an additional layer of protection.

Another aspect to consider for a system with such an amalgamation of high-end (and expensive) components is the quality of the entire product. The HP Z6 G5 A performs like a workhorse and has all the bells and whistles, making it a premium workstation for the most demanding users. The svelte and large black desktop chassis provides plenty of functionality, including a front bay where users can mount an HP Z Turbo Drive Quad Pro front bay-mounted add-in card, which provides up to four hot-swappable PCIe 5.0 x4 M.2 drives right in the front.

Some of the key features of the HP Z6 G5 A include support for all six of AMD’s Ryzen Threadripper Pro 7000 WX series processors, which range from 12C/24T (7945WX), all the way up to the 96C/192T (7995WX), with support for up to 1 TB of DDR5-5600 RDIMM memory in an 8-channel (1DPC) configuration. Storage support, as expected, is vast, with support for up to 12 NVMe SSDs in total, with 6 full-length PCIe 5.0 slots making use of all those PCIe 5.0 lanes built into the processor. Given the Z6 G5 A pedigree, it can use up to three NVIDIA RTX 6000 dual-slot graphics cards or one AMD Pro W7900 graphics card simultaneously, with lower graphics capabilities also supported.

Pivoting back to security, HP includes plenty of security management features, including full-volume encryption and HP-specific technologies such as BIOSphere, Sure Run, Sure Click, Sure Admin, Sure Start, and Sure Recover, and that’s not including AMD’s PRO security features toolset directly integrated at the silicon level. HP’s Wolf Pro Security software is added to the mix, which provides direct protection against malware, phishing, and ransomware attacks.

Ryzen Threadripper Pro 7995WX: Over 100K in CineBench R23 MT!

Looking at how the HP Z6 G5 A performs along with the Ryzen Threadripper Pro 7995WX, we opted for a cut-down version of our test suite, as the platform itself is designed primarily for intensive multi-threaded workloads, such as rendering. That being said, it was up against some stiff competition, including the previously reviewed Ryzen Threadripper 7000 series for HEDT, which is a cut-down Threadripper Pro with fewer cores, with 4-channel memory, and without all the PRO features required for enterprises and businesses. The other contender is the Intel Xeon W9-3495X (56C/112T) workstation processor based on Sapphire Rapids, and at the time of writing, is Intel’s premium workstation platform and the direct competitor to Threadripper Pro 7000.

In the CineBench R23 multi-threaded test, the AMD Ryzen Threadripper Pro 7995WX is the first single-socketed processor in our suite to hit and surpass 100K points, which is an impressive feat in itself. The closest otherwise is the Ryzen Threadripper (non-Pro) 7980X (64C/128T), which marginally missed the 100K mark. Compared directly to the Intel Xeon W9-3495X (56C/112T), the Threadripper Pro 7995WX is around 34% ahead in CineBench R23 MT and represents a significant jump in performance comparing AMD’s Zen 4 workstation flagship to Intel’s current flagship workstation chip.

Looking at y-cruncher 0.8.2.9523’s multi-threaded test performance, we can see that the Ryzen Threadripper Pro 7995WX performs around 25% quicker than the Intel Xeon W9-3495X. In heavily multi-threaded scenarios, the Threadripper Pro 7995WX has a clear and distinct advantage compared to non-Pro Threadripper 7000 and Intel’s Sapphire Rapids workstation chips. Still, in many cases, such as encoding, we don’t see the gains due to a lot of focus on single-threaded performance or workloads not entirely optimized for more than 32/64-threads. 

Where we would typically analyze things based on an apples-to-apples cost basis of the chips, as the Threadripper Pro chips are technically OEM-only, AMD isn’t offering any public pricing information. Yes, the Threadripper Pro 7995WX has 96 cores, and the EPYC 9004 variant this chip is based upon, the AMD EPYC 9654 (96C/192T), has a 1K per unit pricing of $11,805; we do expect pricing to be somewhat similar. The crux is, if the Threadripper Pro 7995WX costs around $11-12k, then this is nearly double the price of Intel’s Xeon W9-3495X, which costs around $5889.

Final Thoughts: HP Z6 G5 A Renders Like a Beast, But It’s Not For Everyone

In 2021, when we reviewed the Lenovo ThinkStation P620 workstation, AMD had just one launch partner for their Ryzen Threadripper Pro 3000 series processors. Fast forward to the Ryzen Threadripper Pro 7000 launch. AMD has four launch partners on board, including HP, Dell, Lenovo, and Supermicro, four of the biggest workstation OEMs in the industry. This represents a significant shift in demand for AMD’s Threadripper Pro processors, which is a good indicator of AMD’s sales performance in the last 2-3 years.

At the time of writing, HP has given us limited information on the pricing of their Z6 G5 A workstations, including the base price and max configuration price. We have been informed that the configuration we’ve reviewed today costs around $19,849. That’s a considerable outlay for a workstation. Still, for users and companies with complex workloads, such as animation companies, automotive design companies, and even engineers who need performance, the price of a fast machine is often a drop in the bucket compared to the ongoing cost of a professional’s time.

At Newegg (at the time of writing), the AMD Ryzen Threadripper Pro 7995WX can be purchased separately for $9999, which is a steep jump from the $6499 that Threadripper Pro 5995WX cost at launch. Sure, the 7995WX has more cores (96 vs. 64), and it has the benefit of being on Zen 4, which has a multitude of benefits, including improved IPC performance, higher core clock speeds, more L3 cache, and a more efficient CPU architecture, a dollar under 10K isn’t cheap!

It’s hard to deny that the HP Z6 G5 A is a very high-end workstation with plenty of supplementary inclusions such as security features, performance through the AMD Threadripper Pro 7995WX processors, which is a behemoth for multi-threaded workloads, and of course, the build quality is superb overall.

With many customization options available via HP, the Z6 G5 A is a solid workstation for users and companies looking to bolster performance in multi-threaded workloads but don’t quite require the more advanced features or platform such as AMD’s EYPC 9004 Genoa server range. Design-wise, the separate cooling chambered approach of the interior is something we wish we could see across the industry, and it puts the HP Z6 G5 A in the more desirable category with solid thermal and multi-threaded performance within the rendering section of our test suite.