AMD Ryzen 9 5950X vs Intel Xeon Phi 7290 Comparison

The Verdict

The benchmark data delivers a clear split decision, and the choice depends entirely on the workload. The AMD Ryzen 9 5950X is the overwhelming winner for general-purpose, high-throughput computing, taking 11 of 15 head-to-head tests. Its advantages are massive in single-threaded, integer, encryption, and rendering tasks. The Intel Xeon Phi 7290, however, retains a narrow but real edge in specific parallel-processing niches, winning 4 tests including single-core Cinebench R23 and physics simulation. For most users, the Ryzen 9 5950X is the superior processor; it is faster in the majority of measured workloads, consumes far less power, and arrives with a more modern feature set. The Xeon Phi 7290 is a specialist tool, only preferable when its unique combination of massive core count and specific instruction handling produces measurable wins.

Architecture Differences

The two processors represent radically different design philosophies. The Intel Xeon Phi 7290 is built on the Knights Landing architecture, a 14 nm design from Intel's foundry, featuring 72 cores and 288 threads. It operates at a base clock of 1500 MHz with a boost clock of 1700 MHz, and carries a thermal design power of 245 watts. Its cache layout is per-core: 32 KB of L1 and 512 KB of L2, with no L3 cache present. It uses DDR4 memory and supports ECC, targeting the server and workstation segment. The part number is SR2WY, and it was released in June 2016. The multiplier is locked.

The AMD Ryzen 9 5950X uses the Zen 3 architecture, codenamed Vermeer, fabricated on TSMC's 7 nm process. It houses 16 cores and 32 threads, with a base clock of 3.40 GHz and a boost clock of 4.90 GHz. Its TDP is 105 watts, less than half that of the Xeon Phi. The cache structure differs sharply: 64 KB of L1 per core, 512 KB of L2 per core, plus a 64 MB L3 cache. It supports dual-channel DDR4 with a memory bandwidth of 51.2 GB/s, and ECC is also supported. It provides PCIe Gen 4 with 20 lanes from the CPU. The die size is 2x 74 mm², and the transistor count is 8,300 million, slightly higher than the Xeon Phi's 8,000 million. It is an unlocked multiplier part, part of the 5000 series, and was released in November 2020. It is an active desktop product.

Where Each One Wins

The Ryzen 9 5950X dominates in nearly every conventional computing scenario. Its single-thread performance is exceptional, as shown by a 3470 score in PassMark single-thread versus 485 for the Xeon Phi, a delta of 86%. This translates directly to faster application responsiveness, better gaming performance, and quicker compilation of lightly threaded code. It also wins decisively in multi-threaded rendering: Cinebench R23 multi-core shows 26017 for the AMD part versus 15163 for Intel, a 41.7% advantage. The Ryzen is also vastly superior in encryption, scoring 39593 in PassMark data encryption versus 12505, a 68.4% gap, and in floating-point math, where it nearly doubles the Xeon Phi's score (100280 versus 47417). For integer math, the AMD chip leads by 31.6% (185520 versus 126922). Data compression also favors the Ryzen, with 624347 versus 564535, a 9.6% edge. The find prime numbers test shows a 50% advantage for AMD (228 versus 114), and the multithread PassMark score is 45424 versus 17839, a 60.7% difference.

The Xeon Phi 7290 wins are narrower but meaningful. Its single-core Cinebench R23 score of 2140 beats the Ryzen's 1614 by 32.6%, which is an anomaly given the AMD chip's higher clocks, but the data is clear. In PassMark physics, the Xeon Phi scores 2257 versus 1878, a 20.2% win. It also edges out the Ryzen in random string sorting (68593 versus 65172, a 5.2% lead) and in extended instructions (41517 versus 40468, a 2.6% lead). These wins suggest the Xeon Phi retains a niche in highly parallel, specialized instruction streams, but they are not enough to offset its broader deficiencies.

FAQ

Q: Which processor is faster for single-threaded tasks?

A: The AMD Ryzen 9 5950X is vastly faster. Its PassMark single-thread score is 3470, compared to 485 for the Intel Xeon Phi 7290, a difference of 86%. The Cinebench R15 single-core test also favors AMD, with 266.5 versus 215, a 19.3% lead.

Q: Does the Intel Xeon Phi 7290 win any benchmark at all?

A: Yes, it wins 4 of 15 head-to-head tests. Its most significant victory is in Cinebench R23 single-core, where it scores 2140 versus 1614 for the AMD, a 32.6% advantage. It also wins in PassMark physics (2257 versus 1878), random string sorting (68593 versus 65172), and extended instructions (41517 versus 40468).

Q: How do the two compare in multi-core rendering?

A: The AMD Ryzen 9 5950X is clearly superior. In Cinebench R15 multi-core, it scores 4324 versus 1528 for the Intel, a 64.7% lead. In Cinebench R23 multi-core, the AMD scores 26017 versus 15163, a 41.7% advantage.

Q: Which processor has more cores and threads?

A: The Intel Xeon Phi 7290 has 72 cores and 288 threads. The AMD Ryzen 9 5950X has 16 cores and 32 threads. Despite having significantly fewer cores, the AMD processor wins the majority of multi-threaded benchmarks due to its higher clock speeds and modern architecture.

Q: What is the thermal design power of each processor?

A: The Intel Xeon Phi 7290 has a TDP of 245 watts. The AMD Ryzen 9 5950X has a TDP of 105 watts, which is less than half of the Intel part.

Q: Which processor supports ECC memory?

A: Both processors support ECC memory. The Intel Xeon Phi 7290 and the AMD Ryzen 9 5950X both list ECC as supported. The AMD part also has a defined dual-channel memory bus with 51.2 GB/s bandwidth.

Head-to-Head Benchmarks

The largest victory for the AMD Ryzen 9 5950X comes in PassMark single-thread, where it scores 3470 against the Xeon Phi's 485, a delta of 86%. This is a crushing margin that underscores the clock speed and IPC advantages of the Zen 3 architecture. The next largest is in Cinebench R15 multi-core, where the AMD part scores 4324 versus 1528, a 64.7% lead. This shows that even with 16 cores versus 72, the Ryzen's efficiency and higher clock speeds dominate in rendering workloads. PassMark data encryption is another decisive win for AMD, with 39593 versus 12505, a 68.4% gap, indicating a major advantage in cryptographic tasks. The PassMark multithread score favors AMD by 60.7% (45424 versus 17839), and floating-point math shows a 52.7% lead for AMD (100280 versus 47417). The find prime numbers test is exactly 50% better on the AMD side (228 versus 114). Integer math favors AMD by 31.6% (185520 versus 126922), and Cinebench R23 multi-core is 41.7% better on AMD (26017 versus 15163). Cinebench R15 single-core gives AMD a 19.3% lead (266.5 versus 215), and data compression is 9.6% better on AMD (624347 versus 564535).

The Intel Xeon Phi 7290's biggest win is in Cinebench R23 single-core, where it scores 2140 versus 1614, a 32.6% advantage. This is a surprising result given the AMD chip's superior PassMark single-thread score, but the recorded data is unambiguous. In PassMark physics, the Xeon Phi leads by 20.2% (2257 versus 1878). Random string sorting favors Intel by 5.2% (68593 versus 65172), and extended instructions show a marginal 2.6% lead for Intel (41517 versus 40468). These wins, while real, are concentrated in a narrow set of tests and do not compensate for the wide deficits in most other categories.

Specification Differences

The two processors differ in nearly every fundamental specification. The Intel Xeon Phi 7290 uses the Intel Socket 3647, while the AMD Ryzen 9 5950X uses AMD Socket AM4. The Xeon Phi has 72 cores and 288 threads; the Ryzen has 16 cores and 32 threads. Base clocks are 1500 MHz for Intel versus 3.40 GHz for AMD; boost clocks are 1700 MHz versus 4.90 GHz. TDP is 245 watts for Intel and 105 watts for AMD. The process node is 14 nm for Intel and 7 nm for AMD, with respective foundries of Intel and TSMC. Transistor counts are 8,000 million for Intel and 8,300 million for AMD. The Xeon Phi has a per-core cache of 32 KB L1 and 512 KB L2 with no L3; the Ryzen has 64 KB L1 per core, 512 KB L2 per core, and 64 MB of shared L3. Both support DDR4 and ECC memory, but the Ryzen specifies a dual-channel bus with 51.2 GB/s bandwidth, while the Xeon Phi does not list a memory bus width or bandwidth. The Ryzen provides PCIe Gen 4 with 20 lanes; the Xeon Phi has no PCIe specification listed. The Xeon Phi is a server and workstation part from 2016; the Ryzen is an active desktop part from 2020 with an unlocked multiplier. The Ryzen 9 5950X has a launch MSRP of $799.