AMD Ryzen 3 5300U vs Intel Xeon E3-1585 v5 Comparison

# AMD Ryzen 3 5300U vs Intel Xeon E3-1585 v5

The data shows a clear split between these two processors. The AMD Ryzen 3 5300U dominates in three of four head-to-head benchmark comparisons, including a commanding 68.3% lead in Cinebench R15 single-core. The Intel Xeon E3-1585 v5 claims only one victory, but it is a decisive one in Cinebench R23 multi-core, where it leads by 25.3%. The Ryzen 3 5300U belongs to the 5000 series mobile lineup, while the Xeon E3-1585 v5 is a Skylake-era server/workstation part. Both chips land at the 46th percentile of all CPUs in the database, and their average benchmark scores differ by only 3.2%, making this a matchup of comparable overall performance with very different strengths.

Where Each One Wins

The AMD Ryzen 3 5300U is the clear winner for single-threaded workloads and legacy multi-threaded tests. Its 3.80 GHz boost clock, combined with the Zen 2 architecture, produces consistently higher scores in every single-core benchmark recorded. The gap is largest in Cinebench R15 single-core, where the Ryzen scores 170 against the Xeon's 101, a 68.3% advantage. In Cinebench R23 single-core, the Ryzen leads 1115 to 1008, a 10.6% edge. The Ryzen also wins Cinebench R15 multi-core, scoring 906 versus 720, a 25.8% margin. This pattern suggests the Ryzen is better suited for applications that rely on older instruction sets, lower thread counts, or widely compatible single-thread performance.

The Intel Xeon E3-1585 v5 wins in modern multi-threaded rendering. Its Cinebench R23 multi-core score of 7146 versus 5341 represents a 25.3% advantage. This result indicates that the Xeon's higher base clock of 3.50 GHz and larger 8 MB shared L3 cache provide a meaningful benefit in sustained, fully threaded workloads. The Xeon also has ECC memory support, which the Ryzen lacks, making it the only choice here for error-correcting memory configurations in server or workstation environments.

The overall average benchmark scores are nearly identical: the Ryzen averages 2135, while the Xeon averages 2067. The Ryzen sits 0.4% above its nearest rival, the AMD Ryzen 5 7520C, while the Xeon sits 0.4% above the AMD Ryzen 5 3400G. Both processors occupy the same performance tier in the database, but their wins are concentrated in different test categories.

Architecture Differences

The two processors come from different architectural generations and design philosophies. The AMD Ryzen 3 5300U uses the Zen 2 architecture, codenamed Lucienne, built on a 7 nm process at TSMC. It integrates 9,800 million transistors on a 156 mm² die. The Intel Xeon E3-1585 v5 uses the Skylake architecture, codenamed Skylake-H, built on a 14 nm process at Intel. It integrates 2,300 million transistors on a 171 mm² die. The Ryzen's smaller process node allows for a dramatically higher transistor density, while the Xeon's larger die area accommodates fewer transistors but a different cache hierarchy.

Cache configurations differ significantly. Both have 64 KB of L1 cache per core. The Ryzen has 512 KB of L2 per core, while the Xeon has 256 KB per core. For L3, the Ryzen provides 4 MB shared, while the Xeon provides 8 MB shared. This doubles the Xeon's last-level cache, which likely contributes to its multi-threaded Cinebench R23 advantage.

Memory support also differs. The Ryzen supports DDR4 only, with dual-channel memory and a bandwidth of 51.2 GB/s. The Xeon supports both DDR3 and DDR4, also dual-channel, but with a lower bandwidth of 34.1 GB/s. The Ryzen does not support ECC memory, while the Xeon does. PCIe lane counts differ as well: the Ryzen offers Gen 3 with 12 CPU lanes, while the Xeon offers Gen 3 with 16 CPU lanes.

Socket and market positioning are distinct. The Ryzen uses AMD Socket FP6 and targets the mobile segment. The Xeon uses Intel BGA 1440 and targets the server/workstation segment. The Ryzen's TDP is 15 watts, while the Xeon's is 65 watts. The Ryzen's integrated graphics are Radeon Graphics with 384 SPs, while the Xeon uses Iris Pro Graphics P580.

Head-to-Head Benchmarks

The recorded data includes four direct comparisons. In Cinebench R15 multi-core, the Ryzen scores 906 against the Xeon's 720, a 25.8% win for AMD. This result is notable because it shows the Ryzen outperforming the Xeon in a multi-threaded test despite having half the L3 cache and a lower base clock. The Ryzen's higher boost clock of 3.80 GHz and newer architecture likely compensate for the cache deficit.

Cinebench R15 single-core shows the largest disparity. The Ryzen scores 170, while the Xeon scores 101. This 68.3% margin is the single biggest difference in the entire comparison. The Xeon's single-core score is unusually low relative to its 3.90 GHz boost clock, suggesting that the Skylake architecture's per-core efficiency is significantly behind Zen 2 in this test.

Cinebench R23 multi-core flips the result. The Xeon scores 7146 against the Ryzen's 5341, a 25.3% lead for Intel. This is the Xeon's only win, but it is substantial. The Xeon's 8 MB L3 cache and 65 W TDP allow it to sustain higher performance under extended multi-threaded loads, while the Ryzen's 15 W mobile design may throttle or reduce clocks over time.

Cinebench R23 single-core returns to the Ryzen's favor. The Ryzen scores 1115, while the Xeon scores 1008, a 10.6% margin. This smaller gap compared to R15 single-core indicates that the Xeon's Skylake architecture performs relatively better in the newer benchmark, but still cannot match the Ryzen's per-core output.

The win count is 3 to 1 in favor of the Ryzen. However, the magnitude of the Xeon's Cinebench R23 multi-core win is comparable to the Ryzen's R15 multi-core win, making the overall picture more balanced than the win count suggests.

FAQ

Q: Which processor has the higher single-core performance?

A: The AMD Ryzen 3 5300U wins in every single-core benchmark recorded. It leads by 68.3% in Cinebench R15 single-core and by 10.6% in Cinebench R23 single-core.

Q: Which processor is better for multi-threaded workloads?

A: The answer depends on the test. The Ryzen wins Cinebench R15 multi-core by 25.8%, but the Xeon wins Cinebench R23 multi-core by 25.3%. The Xeon's larger 8 MB L3 cache and 65 W TDP likely explain its advantage in the newer benchmark.

Q: Do these processors support ECC memory?

A: Only the Intel Xeon E3-1585 v5 supports ECC memory. The AMD Ryzen 3 5300U does not.

Q: How do their overall average benchmark scores compare?

A: The Ryzen averages 2135, while the Xeon averages 2067. The difference is about 3.2%, placing both at the 46th percentile of all CPUs in the database.

Q: What are the memory bandwidth differences?

A: The Ryzen supports DDR4 with 51.2 GB/s dual-channel bandwidth. The Xeon supports DDR3 and DDR4 with 34.1 GB/s dual-channel bandwidth.

Q: Which processor has a smaller manufacturing process?

A: The Ryzen is built on a 7 nm process at TSMC, while the Xeon uses a 14 nm process at Intel. The Ryzen integrates 9,800 million transistors on a 156 mm² die, compared to the Xeon's 2,300 million transistors on a 171 mm² die.

Specification Differences

• Base Clock: AMD Ryzen 3 5300U: 2.60 GHz; Intel Xeon E3-1585 v5: 3.50 GHz
• Boost Clock: AMD Ryzen 3 5300U: 3.80 GHz; Intel Xeon E3-1585 v5: 3.90 GHz
• TDP: AMD Ryzen 3 5300U: 15 W; Intel Xeon E3-1585 v5: 65 W
• Socket: AMD Ryzen 3 5300U: AMD Socket FP6; Intel Xeon E3-1585 v5: Intel BGA 1440
• Architecture: AMD Ryzen 3 5300U: Zen 2 (Lucienne); Intel Xeon E3-1585 v5: Skylake (Skylake-H)
• Process Node: AMD Ryzen 3 5300U: 7 nm (TSMC); Intel Xeon E3-1585 v5: 14 nm (Intel)
• Transistors: AMD Ryzen 3 5300U: 9,800 million; Intel Xeon E3-1585 v5: 2,300 million
• Die Size: AMD Ryzen 3 5300U: 156 mm²; Intel Xeon E3-1585 v5: 171 mm²
• L2 Cache: AMD Ryzen 3 5300U: 512 KB per core; Intel Xeon E3-1585 v5: 256 KB per core
• L3 Cache: AMD Ryzen 3 5300U: 4 MB shared; Intel Xeon E3-1585 v5: 8 MB shared
• Memory Support: AMD Ryzen 3 5300U: DDR4 only; Intel Xeon E3-1585 v5: DDR3 and DDR4
• Memory Bandwidth: AMD Ryzen 3 5300U: 51.2 GB/s; Intel Xeon E3-1585 v5: 34.1 GB/s
• ECC Memory: AMD Ryzen 3 5300U: No; Intel Xeon E3-1585 v5: Yes
• PCIe Lanes: AMD Ryzen 3 5300U: Gen 3, 12 lanes; Intel Xeon E3-1585 v5: Gen 3, 16 lanes
• Integrated Graphics: AMD Ryzen 3 5300U: Radeon Graphics 384SP; Intel Xeon E3-1585 v5: Iris Pro Graphics P580
• Market Segment: AMD Ryzen 3 5300U: Mobile; Intel Xeon E3-1585 v5: Server/Workstation
• Production Status: AMD Ryzen 3 5300U: Active; Intel Xeon E3-1585 v5: End-of-life
• Release Date: AMD Ryzen 3 5300U: 2021-01-11; Intel Xeon E3-1585 v5: 2016-05-30
• Launch MSRP: Intel Xeon E3-1585 v5: $556; AMD Ryzen 3 5300U: not available

The Verdict

The AMD Ryzen 3 5300U is the better choice for general-purpose mobile computing, particularly for workloads that favor single-threaded performance or legacy benchmark compatibility. Its 68.3% lead in Cinebench R15 single-core and 10.6% lead in Cinebench R23 single-core make it the decisive winner for everyday responsiveness, office applications, and lightly threaded tasks. The Ryzen's 15 W TDP also indicates far lower power draw than the Xeon's 65 W, making it suitable for thin-and-light laptops. Its active production status and newer release date add to its relevance.

The Intel Xeon E3-1585 v5 is the better choice for sustained multi-threaded rendering in a workstation or server context, provided the workload matches its Cinebench R23 multi-core strength. Its 25.3% lead in that benchmark, combined with ECC memory support and double the L3 cache, makes it a more robust platform for error-sensitive computing. However, its end-of-life status, higher TDP, and lower single-core scores limit its appeal for modern mobile or general-purpose use.

The data shows that neither processor is universally superior. The Ryzen wins three benchmarks, but the Xeon's single win is large enough to keep the overall average scores close. For users prioritizing single-core speed, mobile efficiency, and modern architecture, the Ryzen is the clear pick. For users requiring ECC memory, a larger last-level cache, and maximum multi-threaded Cinebench R23 performance, the Xeon remains a viable if aging option. Both sit at the 46th percentile, confirming their comparable standing in the broader CPU landscape.