AMD Ryzen 5 7520U vs Intel Xeon E3-1270 v5 Comparison

# FAQ

Q: Which processor has the higher average benchmark score?

A: The Intel Xeon E3-1270 v5 edges out the AMD Ryzen 5 7520U by the narrowest of margins. The Xeon scores 2048 on average, while the Ryzen scores 2046 — a delta of just 0.1%. This places them as near-perfect equals in overall performance, with the Xeon ranking in the 46th percentile of all CPUs and the Ryzen in the 45th.

Q: How do the two chips compare in Cinebench R23 multi-core performance?

A: The Intel Xeon E3-1270 v5 dominates in this test, scoring 7082 versus the Ryzen 5 7520U's 5149. That's a 37.5% advantage for Intel. Interestingly, this is the only benchmark win for the Xeon in the head-to-head comparison, but it is a substantial one.

Q: Which processor is newer and what process node does it use?

A: The AMD Ryzen 5 7520U is significantly newer, released in September 2022, compared to the Xeon's October 2015 release. The Ryzen is built on TSMC's 6 nm process, while the Xeon uses Intel's 14 nm node — a difference of two full generations in manufacturing technology.

Q: What are the memory bandwidth figures for each chip?

A: The AMD Ryzen 5 7520U offers far superior memory bandwidth at 88.0 GB/s, supporting LPDDR5 memory in dual-channel configuration. The Intel Xeon E3-1270 v5, supporting DDR3 and DDR4, delivers only 34.1 GB/s in dual-channel mode. This is a 2.6x difference in theoretical bandwidth.

Q: Do both processors support ECC memory?

A: No. The Intel Xeon E3-1270 v5 supports ECC memory, which aligns with its server/workstation market segment. The AMD Ryzen 5 7520U does not support ECC, consistent with its mobile-focused design targeting ultrathin laptops.

Q: How do the single-core Cinebench R15 scores compare?

A: The AMD Ryzen 5 7520U wins decisively in this test, scoring 168.8 versus the Xeon's 100. That's a 40.8% advantage for AMD — the largest single-core margin in the head-to-head results.

# The Verdict

The data presents two very different processors that happen to land at nearly the same average score. If your priority is sustained multi-threaded throughput in workstation-style workloads, the Intel Xeon E3-1270 v5 is the clear choice — its 37.5% lead in Cinebench R23 multi-core is substantial and directly reflects its 80W TDP and server-class design. However, the Xeon's single-core performance is dramatically weaker, as shown by its 40.8% deficit in Cinebench R15 single-core.

For mobile users, the AMD Ryzen 5 7520U is the obvious pick. It wins three of the four head-to-head benchmarks, delivers superior memory bandwidth at 88.0 GB/s, and does so with a 15W TDP — a fifth of the Xeon's power draw. The Ryzen also includes integrated Radeon 610M graphics, whereas the Xeon has no integrated GPU at all. Given that the Ryzen is active production while the Xeon is end-of-life, the AMD chip is the only sensible choice for new system builds. The Xeon's only remaining appeal is its 8 MB shared L3 cache (double the Ryzen's 4 MB) and ECC memory support, which matter for specific server applications.

# Head-to-Head Benchmarks

The four head-to-head tests reveal a split personality between these CPUs. Starting with multi-core performance, the Intel Xeon E3-1270 v5 posts a commanding 7082 in Cinebench R23 multi-core against the Ryzen's 5149 — a 37.5% gap. This result flips the narrative entirely: despite the Ryzen's modern 6 nm process and higher boost clock of 4.30 GHz, the Xeon's older Skylake architecture with a 4.00 GHz boost and 80W TDP still produces more raw multithreaded output in this test. The Xeon's 8 MB shared L3 cache likely contributes to this advantage.

However, the Ryzen strikes back decisively in every other benchmark. In Cinebench R15 multi-core, the AMD chip scores 834 versus 713 — a 14.5% win. In single-core tests, the gap widens dramatically. Cinebench R15 single-core shows the Ryzen at 168.8 against the Xeon's 100, a 40.8% margin that underscores the architectural efficiency of Zen 2. Cinebench R23 single-core continues this trend with the Ryzen at 1171 versus 999 — a 14.7% advantage.

The pattern suggests that the Ryzen's per-core efficiency (boost clock of 4.30 GHz versus 4.00 GHz) translates into a consistent single-core advantage, while the Xeon's larger L3 cache and higher TDP allow it to win in the more demanding R23 multi-core workload. Notably, the Ryzen also has Geekbench scores of 3766 multi-core and 1185 single-core, while the Xeon has no Geekbench results in the data — an additional data point for AMD in broader application testing.

# Specification Differences

The two processors differ across nearly every major specification. The Intel Xeon E3-1270 v5 runs at a 3.60 GHz base clock and 4.00 GHz boost, while the AMD Ryzen 5 7520U has a 2.80 GHz base but a higher 4.30 GHz boost. Power consumption is starkly different: the Xeon draws 80W TDP versus the Ryzen's 15W — a 5.3x difference that reflects their intended platforms. The Xeon uses Intel Socket 1151, while the Ryzen uses AMD Socket FT6, and neither is unlocked for overclocking.

Memory support diverges completely: the Xeon supports DDR3 and DDR4 in dual-channel with 34.1 GB/s bandwidth and ECC capability, while the Ryzen exclusively supports LPDDR5 in dual-channel with 88.0 GB/s but no ECC. PCIe lanes differ significantly — the Xeon provides 16 lanes of Gen 3, while the Ryzen offers only 4 lanes of Gen 3. The Ryzen includes integrated Radeon 610M graphics; the Xeon has no integrated graphics. The Xeon launched at $339 MSRP in October 2015 and is end-of-life, while the Ryzen launched in September 2022 with no recorded MSRP and remains in active production.

# Architecture Differences

The architectural gulf between these chips is generational. The Intel Xeon E3-1270 v5 is built on Skylake-DT architecture using a 14 nm process from Intel's own foundry, with 1,750 million transistors on a 122 mm² die. The AMD Ryzen 5 7520U uses Zen 2 architecture (Mendocino codename) on TSMC's 6 nm node, with a 100 mm² die size and no transistor count listed. This process advantage gives the Ryzen a massive efficiency edge, consistent with its 15W TDP versus the Xeon's 80W.

Cache configurations differ meaningfully. Both have 64 KB of L1 per core, but the Xeon has 256 KB L2 per core while the Ryzen doubles this to 512 KB per core. The L3 cache reverses the trend: the Xeon has 8 MB shared, while the Ryzen has only 4 MB shared. The Xeon's larger L3 likely explains its R23 multi-core win, while the Ryzen's larger L2 and newer architecture drive its single-core superiority.

The Xeon's market segment is Server/Workstation, with a part number of SR2LF, while the Ryzen targets Mobile with part number 100-000000770. The Xeon's generation is listed as "Xeon E3 (Skylake-DT)" and the Ryzen's as "Ryzen 5 (Zen 2 (Mendocino))" within the 7000 series. These are fundamentally different design philosophies: the Xeon prioritizes throughput and reliability (ECC), while the Ryzen prioritizes efficiency and mobility.

# Where Each One Wins

Intel Xeon E3-1270 v5 wins in:

• Multi-threaded workload endurance — its 37.5% lead in Cinebench R23 multi-core (7082 versus 5149) indicates superior sustained performance in heavily threaded applications like video rendering or scientific computing.
• Large cache scenarios — the 8 MB shared L3 cache is double the Ryzen's 4 MB, benefiting workloads with large working sets that fit in cache.
• Server/Workstation duties — ECC memory support and 16 PCIe Gen 3 lanes make it viable for entry-level servers or workstations requiring data integrity.
• Legacy compatibility — DDR3 and DDR4 support means it can work with older memory infrastructure.

AMD Ryzen 5 7520U wins in:

• Single-core responsiveness — dominating Cinebench R15 single-core by 40.8% (168.8 versus 100) and R23 single-core by 14.7% (1171 versus 999) means snappier everyday app performance.
• Memory bandwidth — at 88.0 GB/s, its LPDDR5 support offers 2.6x the bandwidth of the Xeon's 34.1 GB/s, critical for integrated graphics and data-intensive mobile tasks.
• Power efficiency — a 15W TDP versus 80W makes it suitable for fanless or ultraportable designs, extending battery life.
• Integrated graphics — the Radeon 610M GPU eliminates the need for a separate graphics card in basic display tasks, which the Xeon cannot do without a discrete GPU.
• Modern platform — active production status and a 2022 release date mean ongoing software optimization and driver support.
• Geekbench performance — its 3766 multi-core and 1185 single-core scores provide additional evidence of balanced performance across diverse application tests.

The overall win count favors the Ryzen at 3-1, but the Xeon's single victory in R23 multi-core is the most lopsided result in either direction. For users needing raw multi-core compute, that 37.5% lead may outweigh the Ryzen's other advantages. For everyone else — especially mobile users — the Ryzen's combination of efficiency, bandwidth, and single-core speed makes it the more versatile choice.