AMD Ryzen 3 3300X vs Intel Xeon E5-4648 v3 Comparison

Where Each One Wins

The recorded benchmark data splits these two processors into very different usage categories. The Intel Xeon E5-4648 v3 is a 12-core, 24-thread Haswell-EP part aimed at server and workstation workloads, while the AMD Ryzen 3 3300X is a 4-core, 8-thread Zen 2 desktop chip. The head-to-head results in the database show the Ryzen 3 3300X winning both recorded comparisons, but the Xeon's strengths lie in scenarios the direct comparison does not fully capture.

The Ryzen 3 3300X wins decisively in single-threaded performance. In Cinebench R15 single-core, it scores 195 against the Xeon's 109, a delta of 44.1 percent. That gap is massive and reflects the architectural gulf between a 2015 server part and a 2020 desktop chip. The Ryzen's 4.30 GHz boost clock versus the Xeon's 2.20 GHz boost clock explains much of this, but the IPC improvements from Zen 2 over Haswell are the deeper factor. For everyday desktop responsiveness, lightly threaded applications, and gaming, the Ryzen 3 3300X is clearly the stronger choice.

The Xeon E5-4648 v3, however, brings 12 cores and 24 threads to the table. Its Cinebench R15 multi-core score of 776 is lower than the Ryzen's 1071, which means the Ryzen wins that test too, despite having only one-third the cores. But the Xeon's value proposition is not about winning desktop benchmarks; it is about sustained throughput in server environments, ECC memory support, and quad-channel memory bandwidth. The database records the Xeon's memory bandwidth at 59.7 GB/s, versus 51.2 GB/s for the Ryzen, and it supports ECC memory while the Ryzen does not. For workloads that need memory reliability and high capacity, the Xeon holds the edge.

The Ryzen 3 3300X also has the advantage in power efficiency. Its 65 W TDP is far lower than the Xeon's 105 W TDP, and it delivers higher multi-core scores while consuming less power. The Ryzen's 7 nm process from TSMC versus the Xeon's 22 nm Intel process is the primary reason. The Xeon is end-of-life, while the Ryzen is still active in production. For new builds, the Ryzen is the practical choice; for legacy server upgrades, the Xeon remains relevant.

Architecture Differences

The two processors come from different eras and design philosophies. The Intel Xeon E5-4648 v3 uses the Haswell-EP architecture on a 22 nm process, built by Intel. It packs 2,600 million transistors into a 356 mm² die. The AMD Ryzen 3 3300X uses the Zen 2 architecture, codenamed Matisse, on a 7 nm process from TSMC, with 3,800 million transistors in a much smaller 74 mm² die. The transistor count is higher on the Ryzen despite the smaller die, proof of the density advantage of 7 nm over 22 nm.

Core counts differ sharply. The Xeon has 12 cores and 24 threads, while the Ryzen has 4 cores and 8 threads. Cache hierarchies also diverge. Both have 64 KB of L1 cache per core. The Xeon has 256 KB of L2 per core and 30 MB of shared L3 cache. The Ryzen has 512 KB of L2 per core and 16 MB of shared L3. The Xeon's larger L3 pool is typical for a server part with more cores, while the Ryzen's larger per-core L2 helps with latency-sensitive desktop workloads.

Memory support shows the server versus desktop split. The Xeon uses quad-channel DDR4 with a memory bandwidth of 59.7 GB/s and supports ECC memory. The Ryzen uses dual-channel DDR4 with 51.2 GB/s bandwidth and does not support ECC. The Xeon's PCIe implementation is Gen 3 with 40 lanes from the CPU, while the Ryzen offers Gen 4 with 16 lanes. The Xeon's extra lanes and ECC support make it suitable for servers with many expansion cards and memory-intensive tasks, while the Ryzen's PCIe Gen 4 bandwidth suits modern GPUs and NVMe storage.

The sockets reflect their respective ecosystems. The Xeon uses Intel Socket 2011-3, a platform designed for multi-socket servers. The Ryzen uses AMD Socket AM4, a mainstream desktop socket. The Xeon's multiplier is locked, while the Ryzen's multiplier is unlocked, allowing overclocking. The Xeon's part number is SR26R; the Ryzen's is 100-000000159. The Xeon launched in May 2015 with a launch MSRP of $2405. The Ryzen launched in April 2020 with a launch MSRP of $120. Both parts have no integrated graphics, so they require a discrete GPU.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Xeon E5-4648 v3 has 12 cores and 24 threads, while the AMD Ryzen 3 3300X has 4 cores and 8 threads.

Q: Which processor supports ECC memory?

A: The Intel Xeon E5-4648 v3 supports ECC memory. The AMD Ryzen 3 3300X does not.

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 3 3300X has a boost clock of 4.30 GHz, compared to the Intel Xeon E5-4648 v3's 2.20 GHz.

Q: Which processor is more power-efficient?

A: The AMD Ryzen 3 3300X has a TDP of 65 W, while the Intel Xeon E5-4648 v3 has a TDP of 105 W. The Ryzen also delivers higher multi-core scores in the recorded benchmarks.

Q: Which processor has a smaller manufacturing process?

A: The AMD Ryzen 3 3300X is built on a 7 nm process from TSMC, while the Intel Xeon E5-4648 v3 uses a 22 nm process from Intel.

Q: Are both processors still in production?

A: No. The AMD Ryzen 3 3300X is active in production, while the Intel Xeon E5-4648 v3 is end-of-life.

Specification Differences

The two processors differ across nearly every specification category. The Intel Xeon E5-4648 v3 has 12 cores and 24 threads, while the AMD Ryzen 3 3300X has 4 cores and 8 threads. The Xeon's base clock is 1.70 GHz and its boost clock is 2.20 GHz. The Ryzen's base clock is 3.80 GHz and its boost clock is 4.30 GHz. The Xeon has a TDP of 105 W, the Ryzen has a TDP of 65 W.

The Xeon uses the Haswell architecture on a 22 nm process from Intel, with 2,600 million transistors on a 356 mm² die. The Ryzen uses the Zen 2 architecture on a 7 nm process from TSMC, with 3,800 million transistors on a 74 mm² die. Cache layouts differ: the Xeon has 256 KB of L2 per core and 30 MB of shared L3, while the Ryzen has 512 KB of L2 per core and 16 MB of shared L3. Both have 64 KB of L1 per core.

Memory capabilities split along server and desktop lines. The Xeon uses quad-channel DDR4 with 59.7 GB/s bandwidth and ECC support. The Ryzen uses dual-channel DDR4 with 51.2 GB/s bandwidth and no ECC support. The Xeon's PCIe is Gen 3 with 40 lanes from the CPU, while the Ryzen's is Gen 4 with 16 lanes. The Xeon targets the server and workstation market segment on Intel Socket 2011-3, while the Ryzen targets the desktop segment on AMD Socket AM4.

The Xeon's multiplier is locked, the Ryzen's is unlocked. The Xeon's market segment is server and workstation, production status is end-of-life. The Ryzen's market segment is desktop, production status is active. The Xeon's launch MSRP was $2405, the Ryzen's launch MSRP was $120. The Xeon's part number is SR26R, the Ryzen's is 100-000000159. Neither processor includes integrated graphics.

Head-to-Head Benchmarks

The database contains two direct benchmark comparisons between these processors, and the AMD Ryzen 3 3300X wins both. In Cinebench R15 multi-core, the Ryzen scores 1071 against the Xeon's 776, a delta of 27.5 percent in the Ryzen's favor. This result is notable because the Xeon has three times the cores and three times the threads. The Ryzen's higher clocks and superior IPC overcome the core deficit, though the Xeon's 24 threads would likely scale better in highly parallel server workloads not represented in this test.

In Cinebench R15 single-core, the Ryzen scores 195 against the Xeon's 109, a delta of 44.1 percent. This is the largest gap in the recorded data. The Ryzen's 4.30 GHz boost clock versus the Xeon's 2.20 GHz boost clock, combined with the IPC advantages of Zen 2 over Haswell, produces a decisive win. Single-threaded performance drives most desktop applications, so this result strongly favors the Ryzen for everyday use.

The broader benchmark averages tell a similar story. The Xeon has an average benchmark score of 2227 across its recorded tests: Cinebench R15 multi-core at 776, R15 single-core at 109, R20 multi-core at 3234, R20 single-core at 456, R23 multi-core at 7701, and R23 single-core at 1087. The Ryzen has an average benchmark score of 2148 across its recorded tests: Cinebench R15 multi-core at 1071, R15 single-core at 195, Geekbench multi-core at 5772, and Geekbench single-core at 1555. The Xeon's average is slightly higher, 0.1 percent above the Ryzen in the aggregate, but the test sets differ, and the Ryzen's results come from a smaller and more desktop-oriented suite.

The Xeon's nearest rivals in the database include the Intel Core i7-8559U at an average score of 2225, a 0.1 percent difference, the Intel Core i7-5775C at 2224, also 0.1 percent, the Intel Xeon D-1548 at 2231, a 0.2 percent difference, and the Intel Xeon D-1715TER at 2238, a 0.5 percent difference. The Ryzen's nearest rivals include the Intel Core i5-10200H at 2154, a 0.3 percent difference, the Intel Core i7-5950HQ at 2158, a 0.4 percent difference, the Intel Core i5-9400T at 2136, a 0.6 percent difference, and the AMD Ryzen 3 5300U at 2135, also 0.6 percent. Both processors sit at the 47th percentile among all CPUs in the database, indicating similar overall standing despite their very different designs.

The head-to-head results show the Ryzen leading in both recorded tests, but the Xeon's strengths extend beyond these benchmarks. Its quad-channel memory, ECC support, and 40 PCIe Gen 3 lanes make it a viable server component, while the Ryzen's dual-channel memory, lack of ECC, and 16 PCIe Gen 4 lanes target mainstream desktop builds. The Ryzen wins the direct comparison, but the Xeon retains relevance in its intended market segment.