AMD Ryzen Embedded V2546 vs AMD Ryzen Threadripper PRO 3975WX Comparison

The Verdict

The data presents an unambiguous split between these two AMD processors. The AMD Ryzen Threadripper PRO 3975WX dominates every recorded benchmark in the comparison, winning all six head-to-head tests with a consistent performance advantage of roughly 84.5% in each case. The AMD Ryzen Embedded V2546, by contrast, wins none of the direct comparisons. This is not a close contest by any measure.

For workloads that demand maximum multi-threaded throughput, the Threadripper PRO 3975WX is the clear choice. Its 32 cores and 64 threads deliver Cinebench R23 multi-core scores of 52895, which is more than six times the 8207 posted by the V2546. The Threadripper also leads in single-core performance, with a Cinebench R23 single-core score of 7467 versus 1158 for the embedded chip.

The V2546, however, is not without its place. Its 35 watt TDP makes it suitable for power-constrained embedded applications, and it includes integrated Radeon Graphics with 384 shader processors, something the Threadripper lacks entirely. The V2546 also uses the compact AMD Socket FP6, whereas the Threadripper requires the larger WRX8 platform. For systems where space, power, and integrated graphics matter more than raw compute, the V2546 serves a purpose. The Threadripper PRO 3975WX, with its launch MSRP of $2749, targets professional workstations that need maximum performance regardless of power draw.

Where Each One Wins

The Threadripper PRO 3975WX wins every recorded benchmark category. In Cinebench R15 multi-core, it scores 5331 against the V2546's 827. In Cinebench R20 multi-core, it posts 22215 versus 3446. The R23 multi-core result shows 52895 against 8207. Single-core results follow the same pattern: R15 shows 752 against 116, R20 shows 3136 against 486, and R23 shows 7467 against 1158. Every one of these deltas sits at approximately 84.5% in favor of the Threadripper.

The V2546 does have advantages outside raw benchmark scores. Its integrated graphics provide display output without a separate GPU, which is critical for embedded systems. Its 35 watt TDP allows for passive or low-noise cooling solutions. The dual-channel memory interface is simpler and cheaper to implement than the Threadripper's eight-channel design. The V2546 also uses PCIe Gen 3 with 20 lanes, which is sufficient for many embedded peripheral configurations.

The Threadripper's advantages extend beyond core count. Its 128 MB of L3 cache dwarfs the V2546's 8 MB shared L3. Memory bandwidth reaches 204.8 GB/s through eight channels, compared to 51.2 GB/s through two channels. PCIe Gen 4 with 128 lanes provides massive I/O capacity. These specifications translate directly into the benchmark dominance recorded in the database.

FAQ

Q: Which processor has more cores?

A: The AMD Ryzen Threadripper PRO 3975WX has 32 cores and 64 threads. The AMD Ryzen Embedded V2546 has 6 cores and 12 threads.

Q: Does the Threadripper PRO 3975WX include integrated graphics?

A: No. The Threadripper PRO 3975WX has no integrated graphics. The V2546 includes Radeon Graphics with 384 shader processors.

Q: How much L3 cache does each processor have?

A: The Threadripper PRO 3975WX has 128 MB of L3 cache. The V2546 has 8 MB of shared L3 cache.

Q: What is the memory bandwidth difference?

A: The Threadripper PRO 3975WX supports eight-channel DDR4 with a bandwidth of 204.8 GB/s. The V2546 supports dual-channel DDR4 with a bandwidth of 51.2 GB/s.

Q: Are both processors based on the same architecture?

A: Yes, both use Zen 2 architecture on a 7 nm process from TSMC. The V2546 uses the Renoir codename, while the Threadripper uses Castle Peak.

Q: Which processor has a higher boost clock?

A: The Threadripper PRO 3975WX boosts to 4.20 GHz. The V2546 boosts to 3.95 GHz. The Threadripper also has a higher base clock at 3.50 GHz versus 3.00 GHz.

Specification Differences

The two processors differ in nearly every major specification category. Core count shows the largest gap: the Threadripper PRO 3975WX has 32 cores and 64 threads, while the V2546 has 6 cores and 12 threads. Clock speeds favor the Threadripper, with a base clock of 3.50 GHz and boost clock of 4.20 GHz against the V2546's 3.00 GHz base and 3.95 GHz boost.

Power consumption differs dramatically. The V2546 has a TDP of 35 watts, while the Threadripper PRO 3975WX draws 280 watts. This nearly eightfold difference dictates entirely different cooling and power delivery requirements.

Memory configuration is another major split. The V2546 uses a dual-channel memory bus with 51.2 GB/s bandwidth. The Threadripper uses an eight-channel bus with 204.8 GB/s bandwidth. Both support DDR4 and both support ECC memory.

Cache hierarchy differs significantly. Both have 64 KB of L1 cache per core and 512 KB of L2 cache per core. The L3 cache, however, is vastly different: the V2546 has 8 MB shared, while the Threadripper has 128 MB. The Threadripper's die layout uses four 74 mm² dies, totaling approximately 296 mm², while the V2546 uses a single 156 mm² die. Transistor counts reflect this: 15,200 million for the Threadripper versus 9,800 million for the V2546.

PCIe capabilities strongly favor the Threadripper. It provides PCIe Gen 4 with 128 lanes from the CPU. The V2546 provides PCIe Gen 3 with 20 lanes. This is a decisive factor for systems needing many high-speed expansion devices.

Socket platforms are completely different. The V2546 uses AMD Socket FP6, while the Threadripper PRO 3975WX uses AMD Socket WRX8. These are not interchangeable. The V2546 includes Radeon Graphics with 384 shader processors; the Threadripper has no integrated graphics. Neither processor has an unlocked multiplier. The Threadripper carries a launch MSRP of $2749; the V2546 has no recorded launch MSRP.

Release dates differ by several months. The Threadripper PRO 3975WX was released on 2020-07-13, while the V2546 followed on 2020-11-09. Both remain in active production.

Head-to-Head Benchmarks

The recorded head-to-head benchmarks cover six Cinebench tests, and the Threadripper PRO 3975WX wins all six. The narrowest margin in percentage terms is still enormous. In Cinebench R15 multi-core, the Threadripper scores 5331 against 827 for the V2546, a delta of 84.5%. The R15 single-core test shows 752 against 116, also 84.6% in favor of the Threadripper.

Cinebench R20 results continue the pattern. Multi-core shows 22215 for the Threadripper versus 3446 for the V2546, a delta of 84.5%. Single-core shows 3136 versus 486, again 84.5%.

Cinebench R23 produces the largest absolute gaps. Multi-core scores are 52895 for the Threadripper and 8207 for the V2546, a delta of 84.5%. Single-core scores are 7467 and 1158 respectively, also 84.5%. The consistency of these deltas across all six tests suggests that the performance ratio is stable regardless of workload type or benchmark version.

The V2546 does have additional benchmark data in the database that the Threadripper lacks. PassMark scores for the V2546 include multi-thread performance of 9656, single-thread performance of 1609, data compression of 136097, data encryption of 8046, extended instructions of 8799, prime number finding of 22, floating point math of 18534, integer math of 30739, physics of 441, and random string sorting of 13926. These scores place the V2546 in the 69th percentile of all CPUs. The Threadripper PRO 3975WX has Geekbench scores in the database: 16922 multi-core and 1570 single-core. Its percentile ranking is 68.

Interestingly, the average benchmark score for the V2546 (14336) is actually higher than the Threadripper's average (13786), despite the Threadripper winning every direct comparison. This is because the benchmark sets differ. The V2546's PassMark tests and the Threadripper's Geekbench tests are not directly comparable. The nearest rivals lists reflect different competitive landscapes. The V2546's nearest rival is the AMD Ryzen 5 3501U with an average score of 14320, just 0.1% behind. The Threadripper's nearest rival is the Intel Core 3 304 at 13745, 0.3% behind.

Architecture Differences

Both processors share the Zen 2 architecture and are fabricated on TSMC's 7 nm process. This common foundation means the per-core instruction set and basic microarchitecture are similar. The differences emerge in scale and implementation.

The V2546 uses the Renoir codename and belongs to the Ryzen Embedded generation. It is built as a single 156 mm² die with 9,800 million transistors. The Threadripper PRO 3975WX uses the Castle Peak codename and belongs to the Ryzen Threadripper generation. It uses four 74 mm² dies, totaling roughly 296 mm², with 15,200 million transistors. The multi-die design enables the Threadripper's massive core count and large L3 cache.

The L3 cache difference is architectural, not just quantitative. The V2546's 8 MB shared L3 cache is typical for a mainstream Zen 2 part. The Threadripper's 128 MB L3 cache is an order of magnitude larger, providing substantially more on-chip data storage for cache-sensitive workloads. Both processors have the same per-core L1 and L2 cache sizes: 64 KB L1 and 512 KB L2 per core.

Memory architecture differs fundamentally. The V2546 connects to two DDR4 channels for 51.2 GB/s of bandwidth. The Threadripper connects to eight DDR4 channels for 204.8 GB/s. This fourfold bandwidth advantage is critical for multi-threaded workloads that stream large datasets. Both support ECC memory, which is important for reliability in professional and embedded contexts.

I/O architecture also diverges sharply. The V2546 provides PCIe Gen 3 with 20 CPU lanes. The Threadripper provides PCIe Gen 4 with 128 CPU lanes. The newer PCIe generation doubles the per-lane bandwidth, and the lane count is more than six times higher. Systems built around the Threadripper can support many high-bandwidth devices simultaneously, including multiple GPUs, NVMe storage arrays, and network adapters.

Integrated graphics represent a major architectural difference. The V2546 includes Radeon Graphics with 384 shader processors, enabling display output without a discrete GPU. The Threadripper PRO 3975WX has no integrated graphics and requires a separate graphics card. For embedded systems where the CPU sits inside a compact chassis, integrated graphics simplify the design. For professional workstations, a discrete GPU is expected anyway, so the lack of integrated graphics is not a practical limitation.

The socket difference reflects these architectural choices. The V2546 uses AMD Socket FP6, a compact BGA-style socket suited to embedded motherboards. The Threadripper uses AMD Socket WRX8, a large LGA socket designed for high-power workstation platforms. The 280 watt TDP of the Threadripper requires substantial cooling and power delivery infrastructure, while the 35 watt TDP of the V2546 allows for much simpler system design.

Production status for both processors is listed as active. The Threadripper PRO 3975WX launched on 2020-07-13 with a launch MSRP of $2749. The V2546 launched on 2020-11-09 with no recorded MSRP. Both support DDR4 memory, and neither has an unlocked multiplier, meaning overclocking headroom is limited on both platforms.