AMD Ryzen 7 4800HS vs Intel Xeon E5-2643 v3 Comparison

The AMD Ryzen 7 4800HS and Intel Xeon E5-2643 v3 are both 49th-percentile performers in the global CPU database, but they achieve that standing through radically different designs and workloads. The Ryzen 7 4800HS is a mobile processor built on a 7nm process with 8 cores, while the Xeon E5-2643 v3 is an end-of-life server/workstation chip on a 22nm process with 6 cores. Benchmark data shows the AMD part wins both head-to-head tests decisively, but the Xeon's platform features—quad-channel memory and ECC support—make it a different class of product for specific server roles.

Where Each One Wins

The AMD Ryzen 7 4800HS wins every benchmark where the two are directly compared. In Cinebench R15 multi-core, the Ryzen scores 1700.5 against the Xeon's 875, a 94.3% advantage. In Cinebench R15 single-core, it scores 186.5 versus 123, a 51.6% lead. The Ryzen's 8 cores and 16 threads at a 2.90 GHz base and 4.20 GHz boost clock simply outclass the Xeon's 6 cores and 12 threads at 3.40 GHz base and 3.70 GHz boost. The Xeon's higher base clock cannot compensate for its older architecture and fewer cores.

The Intel Xeon E5-2643 v3 wins in areas not covered by the head-to-head benchmarks. Its 20 MB of shared L3 cache dwarfs the Ryzen's 8 MB, and its quad-channel DDR4 memory bus delivers 68.3 GB/s of bandwidth versus the Ryzen's dual-channel 51.2 GB/s. It also supports ECC memory, which the Ryzen does not. For workloads that are memory-bandwidth-bound or require error-correcting memory, the Xeon is the appropriate choice despite losing every compute benchmark.

Data from their respective benchmark suites reinforces this split. The Xeon shows a Cinebench R23 multi-core score of 8682 and single-core of 1225, while the Ryzen's Geekbench multi-core score is 7019 and single-core is 1320. The Ryzen's average benchmark score is 2557, slightly above the Xeon's 2511, but both sit at the 49th percentile of all CPUs. The Ryzen's nearest rival is the AMD Ryzen 9 4900HS at -0.6% delta, while the Xeon's nearest rival is the Intel Xeon E-2144G at -0.1% delta.

Architecture Differences

The Ryzen 7 4800HS is built on TSMC's 7nm process with 9,800 million transistors in a 156 mm² die, while the Xeon E5-2643 v3 uses Intel's 22nm process with 2,600 million transistors in a 356 mm² die. This process node advantage is central to the Ryzen's performance per watt, though the Xeon's larger die allows more cache and memory channels. The Ryzen uses AMD's Zen 2 architecture under the Renoir codename, while the Xeon uses Intel's Haswell architecture under Haswell-EP.

Cache configurations differ significantly. Both have 64 KB of L1 per core and 512 KB of L2 per core for the Ryzen versus 256 KB per core for the Xeon. The L3 cache is where the Xeon pulls ahead: 20 MB shared versus 8 MB shared. The Ryzen has no vCache3d, and neither does the Xeon. Memory support shows the Ryzen handling DDR4 and LPDDR4 in dual-channel mode, while the Xeon supports DDR4 in quad-channel mode with ECC capability. The Ryzen has integrated Radeon Graphics with 448 SPs; the Xeon has no integrated graphics.

PCIe support is Gen 3 for both, but the Xeon provides 40 lanes (CPU only) versus the Ryzen's unspecified lane count. The Ryzen uses AMD Socket FP6, while the Xeon uses Intel Socket 2011-3. TDP is a stark difference: 45 watts for the Ryzen versus 135 watts for the Xeon. The Ryzen's market segment is Mobile with Active production status; the Xeon's is Server/Workstation with End-of-life status. The Ryzen was released in 2020, the Xeon in 2014.

Head-to-Head Benchmarks

The Cinebench R15 multi-core test shows the largest gap between these two processors. The Ryzen 7 4800HS scores 1700.5, which is 94.3% higher than the Xeon's 875. This nearly doubles the Xeon's output and reflects the Ryzen's 8 cores versus 6, plus its 16 threads versus 12. The Ryzen's boost clock of 4.20 GHz, well above the Xeon's 3.70 GHz, also contributes to this result. The Xeon's higher base clock of 3.40 GHz versus 2.90 GHz does not help in a sustained multi-core workload where thermal and power limits come into play.

The Cinebench R15 single-core test shows a smaller but still decisive gap. The Ryzen scores 186.5 against the Xeon's 123, a 51.6% advantage. This is notable because the Xeon's base clock is higher, yet the Ryzen's newer architecture and higher boost clock win clearly. Single-core performance is critical for lightly-threaded applications, and the data shows the Ryzen is far ahead here.

The Xeon has additional benchmark data that the Ryzen lacks, including Cinebench R20 and R23 scores. The Xeon's R20 multi-core score is 3646 and single-core is 514; its R23 multi-core is 8682 and single-core is 1225. These numbers cannot be directly compared to the Ryzen since the Ryzen was not tested on those workloads, but they show the Xeon's capability profile. The Ryzen's Geekbench scores of 7019 multi-core and 1320 single-core demonstrate its competitive standing. The head-to-head data lists 2 wins for the AMD part and 0 for the Intel part.

FAQ

Q: Which processor is faster in multi-core workloads?

A: The AMD Ryzen 7 4800HS is 94.3% faster in Cinebench R15 multi-core, scoring 1700.5 versus the Intel Xeon E5-2643 v3's 875. The Ryzen's 8 cores and 16 threads outperform the Xeon's 6 cores and 12 threads.

Q: Does the Intel Xeon E5-2643 v3 have any performance advantage?

A: The Xeon wins in memory bandwidth with 68.3 GB/s from quad-channel DDR4, versus the Ryzen's 51.2 GB/s from dual-channel. It also has 20 MB of shared L3 cache compared to the Ryzen's 8 MB. These advantages do not translate into benchmark wins in the head-to-head tests.

Q: What is the TDP difference between these two CPUs?

A: The Ryzen 7 4800HS has a 45-watt TDP, while the Xeon E5-2643 v3 has a 135-watt TDP. This means the Ryzen draws significantly less power, which is consistent with its mobile market segment.

Q: Can the Xeon E5-2643 v3 be used in a desktop or mobile system?

A: The Xeon is a Server/Workstation processor with an Intel Socket 2011-3, while the Ryzen uses AMD Socket FP6 for mobile systems. The Xeon has no integrated graphics, whereas the Ryzen includes Radeon Graphics with 448 SPs. These platform differences dictate their intended uses.

Q: Which CPU supports ECC memory?

A: The Intel Xeon E5-2643 v3 supports ECC memory, while the AMD Ryzen 7 4800HS does not. ECC support is a key feature for server and workstation reliability.

Q: How do their average benchmark scores compare?

A: The Ryzen 7 4800HS has an average benchmark score of 2557, while the Xeon E5-2643 v3 scores 2511. Both are at the 49th percentile of all CPUs, indicating similar overall standing despite different strengths.

The Verdict

The AMD Ryzen 7 4800HS is the clear winner for compute performance. It beats the Intel Xeon E5-2643 v3 by 94.3% in multi-core and 51.6% in single-core Cinebench R15 tests. Its 8 cores, 16 threads, and 4.20 GHz boost clock deliver far better raw processing power, and its 45-watt TDP makes it dramatically more efficient than the Xeon's 135 watts. The Ryzen's 7nm process and 9,800 million transistors in a 156 mm² die represent a modern design that outperforms the Xeon's 22nm process and 356 mm² die across every benchmark they share.

The Intel Xeon E5-2643 v3 is the right choice only for specific server or workstation requirements. Its quad-channel memory bus provides 68.3 GB/s of bandwidth, 33% more than the Ryzen's 51.2 GB/s, and its 20 MB L3 cache is 2.5 times larger. ECC memory support is a critical feature for data integrity in server environments. The Xeon's 40 PCIe Gen 3 lanes (CPU only) also offer more expansion capability compared to the Ryzen's unspecified lane count. However, its 6-core, 12-thread configuration and 3.70 GHz boost clock are outdated, and its end-of-life production status means it is not a forward-looking purchase.

Pick the Ryzen 7 4800HS for any compute-intensive mobile workload where performance per watt matters. Pick the Xeon E5-2643 v3 for memory-bandwidth-heavy server tasks that require ECC and quad-channel support. The data shows the Ryzen is the superior processor in every head-to-head benchmark, but the Xeon's platform features serve a different purpose.

Specification Differences

• Cores: AMD Ryzen 7 4800HS has 8 cores; Intel Xeon E5-2643 v3 has 6 cores.
• Threads: AMD Ryzen 7 4800HS has 16 threads; Intel Xeon E5-2643 v3 has 12 threads.
• Base Clock: AMD Ryzen 7 4800HS runs at 2.90 GHz; Intel Xeon E5-2643 v3 runs at 3.40 GHz.
• Boost Clock: AMD Ryzen 7 4800HS boosts to 4.20 GHz; Intel Xeon E5-2643 v3 boosts to 3.70 GHz.
• TDP: AMD Ryzen 7 4800HS is rated at 45 watts; Intel Xeon E5-2643 v3 is rated at 135 watts.
• Process Node: AMD Ryzen 7 4800HS uses 7 nm (TSMC); Intel Xeon E5-2643 v3 uses 22 nm (Intel).
• Transistors: AMD Ryzen 7 4800HS has 9,800 million; Intel Xeon E5-2643 v3 has 2,600 million.
• Die Size: AMD Ryzen 7 4800HS measures 156 mm²; Intel Xeon E5-2643 v3 measures 356 mm².
• L2 Cache: AMD Ryzen 7 4800HS has 512 KB per core; Intel Xeon E5-2643 v3 has 256 KB per core.
• L3 Cache: AMD Ryzen 7 4800HS has 8 MB shared; Intel Xeon E5-2643 v3 has 20 MB shared.
• Memory Support: AMD Ryzen 7 4800HS supports DDR4 and LPDDR4; Intel Xeon E5-2643 v3 supports DDR4 only.
• Memory Bus: AMD Ryzen 7 4800HS uses dual-channel; Intel Xeon E5-2643 v3 uses quad-channel.
• Memory Bandwidth: AMD Ryzen 7 4800HS provides 51.2 GB/s; Intel Xeon E5-2643 v3 provides 68.3 GB/s.
• ECC Memory: AMD Ryzen 7 4800HS does not support it; Intel Xeon E5-2643 v3 supports it.
• Integrated Graphics: AMD Ryzen 7 4800HS includes Radeon Graphics 448SP; Intel Xeon E5-2643 v3 has none.
• Socket: AMD Ryzen 7 4800HS uses AMD Socket FP6; Intel Xeon E5-2643 v3 uses Intel Socket 2011-3.
• Market Segment: AMD Ryzen 7 4800HS is Mobile; Intel Xeon E5-2643 v3 is Server/Workstation.
• Production Status: AMD Ryzen 7 4800HS is Active; Intel Xeon E5-2643 v3 is End-of-life.