AMD Ryzen Threadripper 3970X vs Intel Xeon E3-1565L v5 Comparison

The Intel Xeon E3-1565L v5 and the AMD Ryzen Threadripper 3970X represent two extremes of the processor spectrum: one is a 35-watt, four-core server chip from 2016, while the other is a 280-watt, 32-core desktop monster from 2019. The benchmark data reveals a complete rout in favor of the AMD part, but the story is more nuanced than a simple score comparison, as the Intel chip's efficiency and integrated graphics carve out a distinct, if narrow, niche.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen Threadripper 3970X has 32 cores and 64 threads, while the Intel Xeon E3-1565L v5 has 4 cores and 8 threads.

Q: How large is the performance gap in Cinebench R23 multi-core?

A: The AMD Ryzen Threadripper 3970X scores 53,630, which is 88.4% higher than the Intel Xeon E3-1565L v5's 6,226.

Q: What is the difference in memory bandwidth?

A: The AMD Ryzen Threadripper 3970X supports quad-channel memory with a theoretical bandwidth of 102.4 GB/s, whereas the Intel Xeon E3-1565L v5 supports dual-channel memory with a bandwidth of 34.1 GB/s.

Q: Does the Intel Xeon E3-1565L v5 have integrated graphics?

A: Yes, it features Intel Iris Pro Graphics P580. The AMD Ryzen Threadripper 3970X does not have integrated graphics.

Q: Which processor has a lower TDP?

A: The Intel Xeon E3-1565L v5 has a TDP of 35 watts, which is significantly lower than the AMD Ryzen Threadripper 3970X's 280 watts.

Q: What is the production status of each processor?

A: The Intel Xeon E3-1565L v5 is end-of-life, while the AMD Ryzen Threadripper 3970X is still listed as active.

Architecture Differences

The two processors are built on fundamentally different architectures and manufacturing processes. The Intel Xeon E3-1565L v5 uses the Skylake-H architecture on a 14 nm process node, fabricated by Intel itself, with 2,300 million transistors on a 171 mm² die. In contrast, the AMD Ryzen Threadripper 3970X uses the Zen 2 architecture (codename Castle Peak) on a 7 nm process node, fabricated by TSMC, with 15,200 million transistors spread across four 74 mm² dies.

The cache hierarchies are also completely different. Both have 64 KB of L1 cache per core, but the Intel chip has 256 KB of L2 cache per core and 8 MB of shared L3 cache. The AMD part has 512 KB of L2 cache per core and a massive 128 MB of L3 cache. This 16x difference in L3 capacity is a direct consequence of the chiplet design and is a major factor in the AMD's multi-threaded dominance.

Memory support diverges sharply. The Intel Xeon supports both DDR3 and DDR4 memory over a dual-channel bus, while the AMD Ryzen Threadripper supports only DDR4 over a quad-channel bus. The AMD's memory bandwidth of 102.4 GB/s is exactly three times the Intel's 34.1 GB/s, which is critical for feeding 32 cores. The Intel chip also supports ECC memory, which the AMD part does not. The Intel processor uses an Intel BGA 1440 socket and is not multiplier-unlocked, whereas the AMD uses an AMD Socket TRX4 and is multiplier-unlocked. The Intel's PCIe implementation is Gen 3 with 16 lanes from the CPU, while the AMD offers Gen 4 lanes. Finally, the Intel chip includes integrated Iris Pro Graphics P580, a feature absent from the AMD.

Head-to-Head Benchmarks

The head-to-head data is unambiguous: the AMD Ryzen Threadripper 3970X wins all six benchmark comparisons. The most dramatic gap is in Cinebench R23 multi-core, where the AMD scores 53,630 against the Intel's 6,226, a delta of -88.4% for the Intel. This pattern repeats across every Cinebench test. In Cinebench R15 multi-core, the AMD scores 5,405 versus 627, also a -88.4% delta. The single-core results are equally lopsided in percentage terms. In Cinebench R23 single-core, the AMD scores 7,571 against the Intel's 879, again -88.4%.

The consistency of the -88.4% delta across all tests is striking. It suggests that the performance difference is not workload-dependent but rather a fundamental scaling issue. The Intel chip's 4 cores and 8 threads are simply overwhelmed by the AMD's 32 cores and 64 threads. Even in single-threaded tests, the AMD's higher boost clock of 4.50 GHz versus 3.50 GHz and newer Zen 2 architecture give it a massive advantage. The data shows a processor that is not just slower but is outperformed by nearly an order of magnitude in every metric measured.

The Intel Xeon does have a few benchmark scores not shared in the head-to-head list, such as a Passmark single-thread score of 1,970 and a data compression score of 94,771. However, these are not compared directly to the AMD, which has no corresponding Passmark data in the fact pack. The only comparable data points are the Cinebench tests, and in all of them, the AMD's victory is absolute.

Specification Differences

The most obvious specification difference is core count: 4 cores for the Intel versus 32 for the AMD. This leads directly to a thread count difference of 8 versus 64. The base clock of the Intel is 2.50 GHz versus 3.70 GHz for the AMD, and the boost clock is 3.50 GHz versus 4.50 GHz. The TDP difference is extreme, with the Intel at 35 watts and the AMD at 280 watts.

The process node is a major differentiator: 14 nm for Intel versus 7 nm for AMD. Transistor count scales accordingly, from 2,300 million to 15,200 million. The die size is also different: 171 mm² for the Intel, while the AMD uses four 74 mm² dies. The L3 cache is 8 MB for the Intel versus 128 MB for the AMD. The memory bus width differs (dual-channel versus quad-channel), as does the theoretical memory bandwidth (34.1 GB/s versus 102.4 GB/s). The Intel supports ECC memory, the AMD does not. The Intel has integrated Iris Pro Graphics P580, the AMD has none. The sockets are different (Intel BGA 1440 versus AMD Socket TRX4), and the AMD is multiplier-unlocked while the Intel is not. The market segment differs (Server/Workstation versus Desktop), as does production status (End-of-life versus Active). The launch MSRP for the Intel is $417, and for the AMD it is $1,999. The AMD's part number is 100-000000011100-100000011WOF, while the Intel's is SR2R8.

The Verdict

The verdict is clear from the data: the AMD Ryzen Threadripper 3970X is the superior processor for virtually any compute-intensive task. The benchmark results show an 88.4% advantage in every Cinebench test, which is a massive and consistent margin. The AMD's architectural advantages — more cores, more threads, more cache, more memory bandwidth, and a newer process node — all contribute to this outcome. The Intel Xeon E3-1565L v5 cannot compete in raw performance.

However, there is a narrow case for the Intel part. Its 35-watt TDP is a fraction of the AMD's 280 watts, making it suitable for power-constrained environments. It also includes integrated graphics, which the AMD lacks, so systems using the Intel chip do not require a separate GPU. The Intel chip also supports ECC memory, which is a requirement for certain server and workstation applications. Its end-of-life status and much lower launch MSRP of $417 versus $1,999 indicate a different market positioning.

For users who need maximum multi-threaded performance for rendering, scientific computing, or heavy compilation, the AMD Ryzen Threadripper 3970X is the only choice from this data. For users who prioritize low power consumption, have a need for integrated graphics, or require ECC memory support, the Intel Xeon E3-1565L v5 remains a viable, albeit slow, option.

Where Each One Wins

The AMD Ryzen Threadripper 3970X wins in every benchmark category that was directly compared. This includes Cinebench R15, R20, and R23, in both multi-core and single-core tests. The multi-core wins are expected given the 8x core advantage, but the single-core wins are equally decisive. The AMD's higher boost clock and superior IPC from the Zen 2 architecture make it faster even on a single thread. The data implies that the AMD is the winner for any workload that is compute-bound, whether it is fully multi-threaded or lightly threaded.

The Intel Xeon E3-1565L v5 wins in areas not covered by the head-to-head benchmarks. Its integrated Iris Pro Graphics P580 provides a display output and basic graphics acceleration, which the AMD cannot offer. Its 35-watt TDP means it can be cooled by a simple, low-profile cooler and used in compact or fanless designs. Its ECC memory support is a feature for data integrity in server environments. The Intel chip also has a lower launch MSRP, which might be relevant for systems that do not require the AMD's performance. The data shows that while the Intel loses every performance benchmark, it wins on power efficiency and feature integration, making it a specialized tool rather than a general-purpose performer.