AMD Ryzen 5 PRO 1500 vs Intel Xeon E5-4648 v3 Comparison

The AMD Ryzen 5 PRO 1500 and Intel Xeon E5-4648 v3 are two processors from different eras and market segments, yet their benchmark results place them in an unusually tight contest. The data shows the Ryzen 5 PRO 1500 winning all six head-to-head Cinebench comparisons, but by margins so slim—never exceeding 0.9%—that the practical difference is negligible. The Xeon, despite being a 12-core server chip, matches the 4-core desktop part in raw rendering scores. This makes the choice less about performance and more about platform features and intended use case.

The Verdict

The benchmark data presents a clear but nuanced picture. For single-threaded and lightly-threaded workloads, the AMD Ryzen 5 PRO 1500 takes a consistent, if narrow, lead. It wins Cinebench R15, R20, and R23 single-core tests with deltas of 0.9%, 0.9%, and 0.8% respectively. The margins are tiny—a 110 vs 109 score in R15 single-core is within run-to-run variance—but the pattern is uniform.

In multi-core tests, the same story repeats. The Ryzen 5 PRO 1500 edges out the Xeon in Cinebench R15 multicore (782 vs 776, +0.8%), R20 multicore (3261 vs 3234, +0.8%), and R23 multicore (7766 vs 7701, +0.8%). This is remarkable given the Xeon's 12 cores and 24 threads versus the Ryzen's 4 cores and 8 threads. The Xeon's higher core count is offset by its much lower base clock of 1700.00 MHz and older Haswell architecture.

Who should pick which? The Ryzen 5 PRO 1500 is the better choice for desktop users who want a modern, unlocked processor on AMD Socket AM4 with DDR4 dual-channel memory support. It is still in active production, while the Xeon is end-of-life. The Xeon E5-4648 v3, however, targets server/workstation environments where its quad-channel DDR4 memory bus, 59.7 GB/s memory bandwidth, ECC memory support, and 40 PCIe Gen 3 lanes are decisive features. It also offers 30 MB of shared L3 cache versus 16 MB on the Ryzen, which can matter for certain server workloads. The data shows the Xeon's 105W TDP is higher than the Ryzen's 65W, but that is the cost of its platform capabilities.

Architecture Differences

The two processors come from fundamentally different design philosophies. The AMD Ryzen 5 PRO 1500 is built on the Zen architecture (Summit Ridge) using a 14 nm process node from GlobalFoundries. It packs 4,800 million transistors into a 192 mm² die. The Xeon E5-4648 v3 uses Intel's Haswell-EP architecture on a 22 nm process, with 2,600 million transistors on a larger 356 mm² die. The process node difference explains part of the performance-per-clock advantage the Ryzen enjoys.

Core and thread asymmetry is stark. The Ryzen offers 4 cores and 8 threads; the Xeon has 12 cores and 24 threads. However, the Ryzen's base clock of 3.50 GHz and boost clock of 3.70 GHz dwarf the Xeon's 1700.00 MHz base and 2.20 GHz boost. This clock advantage compensates for the core deficit in Cinebench workloads, which scale with both cores and frequency.

Cache layouts differ as well. The Ryzen uses a per-core L1 of 96 KB and L2 of 512 KB, with a shared 16 MB L3. The Xeon uses smaller per-core caches (64 KB L1, 256 KB L2) but a much larger 30 MB shared L3 cache. Memory support is another divergence: both support DDR4, but the Ryzen is dual-channel while the Xeon is quad-channel with a rated 59.7 GB/s memory bandwidth. The Xeon also supports ECC memory; the Ryzen does not. The Xeon provides 40 PCIe Gen 3 lanes from the CPU, while the Ryzen's PCIe configuration is not specified in the data.

Socket and market positioning reinforce the split. The Ryzen uses AMD Socket AM4, is unlocked, and targets the desktop segment. The Xeon uses Intel Socket 2011-3, is locked, and is designed for server/workstation use. The Ryzen launched on 2017-06-28 and remains active; the Xeon launched on 2015-05-31 and is end-of-life.

Where Each One Wins

Based on benchmark wins, the AMD Ryzen 5 PRO 1500 wins all six head-to-head comparisons. That is the simple answer. But the data reveals a more useful interpretation. The Ryzen's wins are consistent across every Cinebench version (R15, R20, R23) and both single-core and multi-core tests. This suggests a general-purpose advantage in rendering and CPU-bound tasks that respond to high clock speeds.

The Xeon's strengths do not appear in the Cinebench scores but are evident in its platform features. For memory-intensive server workloads, the quad-channel DDR4 bus with 59.7 GB/s bandwidth provides a substantial edge over the Ryzen's dual-channel setup. ECC memory support is critical for data integrity in server environments; the Ryzen lacks this. The 30 MB shared L3 cache may also benefit workloads with large working sets that fit in cache.

The Ryzen is the better choice for desktop productivity, content creation, and any task where single-threaded performance or high boost clocks matter. The Xeon is the better choice for virtualized environments, database servers, or compute nodes where ECC, memory bandwidth, and PCIe lane count are non-negotiable. The Ryzen's active production status also means it is available for new builds; the Xeon's end-of-life status makes it a used-market or existing-inventory option.

FAQ

Q: Which processor has higher single-core performance?

A: The AMD Ryzen 5 PRO 1500 wins all three single-core Cinebench tests. It scores 110 vs 109 in R15, 460 vs 456 in R20, and 1096 vs 1087 in R23, with delta percentages of 0.9%, 0.9%, and 0.8% respectively.

Q: How does the core count difference affect multi-core scores?

A: Despite having 12 cores and 24 threads versus the Ryzen's 4 cores and 8 threads, the Xeon still loses multi-core tests. The Ryzen leads by 0.8% in Cinebench R15, R20, and R23 multicore, with scores of 782 vs 776, 3261 vs 3234, and 7766 vs 7701 respectively.

Q: Is the Xeon E5-4648 v3 still in production?

A: No. The production status for the Intel Xeon E5-4648 v3 is listed as "End-of-life." The AMD Ryzen 5 PRO 1500 has a production status of "Active."

Q: Which processor supports ECC memory?

A: The Intel Xeon E5-4648 v3 supports ECC memory. The AMD Ryzen 5 PRO 1500 does not support ECC memory.

Q: What are the memory channel configurations?

A: The AMD Ryzen 5 PRO 1500 uses a dual-channel memory bus. The Intel Xeon E5-4648 v3 uses a quad-channel memory bus with a rated memory bandwidth of 59.7 GB/s.

Q: What is the release date difference?

A: The AMD Ryzen 5 PRO 1500 was released on 2017-06-28. The Intel Xeon E5-4648 v3 was released earlier, on 2015-05-31.

Head-to-Head Benchmarks

The benchmark results are remarkably consistent across all six tests. The AMD Ryzen 5 PRO 1500 wins every single comparison, but the margins are so thin that they would be imperceptible in real-world use. The largest delta is 0.9%, which occurs in two tests.

In Cinebench R15 multicore, the Ryzen scores 782 against the Xeon's 776, a delta of 0.8%. This is a 6-point difference out of nearly 800 points. The single-core R15 test shows a 110 vs 109 result, a 0.9% delta. The pattern repeats in Cinebench R20: multicore 3261 vs 3234 (+0.8%), single-core 460 vs 456 (+0.9%). Cinebench R23 continues the trend with multicore 7766 vs 7701 (+0.8%) and single-core 1096 vs 1087 (+0.8%).

The most striking aspect is that the 12-core Xeon cannot overcome the Ryzen's clock advantage in multi-threaded tests. The Ryzen's boost clock of 3.70 GHz is 68% higher than the Xeon's 2.20 GHz boost, and this drives its 4-core/8-thread design to match or slightly exceed the Xeon's 12-core/24-thread configuration. The Xeon's 30 MB L3 cache and quad-channel memory do not translate into Cinebench wins, which are primarily clock- and IPC-sensitive.

Average benchmark scores reflect the same closeness. The Ryzen has an average benchmark score of 2246, while the Xeon sits at 2227. Both processors occupy the 47th percentile against all CPUs. The nearest rivals for the Ryzen include the Intel Core i7-10710U (2248, -0.1% delta) and Intel Core i5-9400 (2254, -0.4%). The Xeon's nearest rivals include the Intel Core i7-8559U (2225, +0.1%) and Intel Core i7-5775C (2224, +0.1%). These rival comparisons show both processors are solidly mid-pack performers, not outliers in any direction.

Given the data, the Ryzen 5 PRO 1500 is the superior choice for raw Cinebench performance, but only by hair-thin margins. The Xeon's value proposition lies entirely in its server-oriented features, which the benchmark scores do not capture. The launch MSRP for the Xeon was $2405, which reflects its original enterprise positioning, though that price is historical and not indicative of current market value. For a desktop build, the Ryzen's active status, unlocked multiplier, and modern 14 nm process make it the practical pick. For a server socket with ECC and quad-channel requirements, the Xeon remains the only option that fits the platform.