Intel Core i9-8950HK vs Intel Xeon E5-4640 v3 Comparison

Head-to-Head Benchmarks

The recorded data presents an unusually tight contest. Across all six shared Cinebench tests, the Intel Xeon E5-4640 v3 edges out the Intel Core i9-8950HK, but the margins are razor-thin. In Cinebench R15 multi-core, the Xeon scores 888 against the i9's 884, a delta of just 0.5%. The single-core result is similarly close: 125 versus 124, a 0.8% advantage for the server chip. These are margins that could easily be attributed to silicon lottery or thermal variance in a mobile platform.

Moving to Cinebench R20, the pattern holds. The Xeon posts 3702 multi-core and 522 single-core, while the i9-8950HK records 3686 and 520 respectively. Both deltas sit at 0.4%. The most recent test in the database, Cinebench R23, repeats the story: 8816 versus 8777 in multi-core, and 1244 versus 1239 in single-core, again a 0.4% gap. The Xeon wins all six head-to-head matchups, but the largest advantage anywhere is under one percent.

What does this mean? The i9-8950HK, despite being a mobile part with half the core count, is effectively matching a 12-core server processor in sustained rendering workloads. The Xeon's victory is consistent but not decisive. The data suggests that the i9's much higher boost clock, 4.70 GHz versus 2.60 GHz, compensates for its fewer physical cores in these particular tests. The average benchmark score in the database tells a slightly different story: the i9 averages 2641 across all recorded tests, while the Xeon averages 2550. That difference of roughly 3.6% comes from the i9's additional Geekbench results, where it scores 4577 multi-core and 1318 single-core, tests the Xeon does not have recorded.

FAQ

Q: Which processor wins more head-to-head benchmarks?

A: The Intel Xeon E5-4640 v3 wins all six recorded head-to-head Cinebench tests. The Intel Core i9-8950HK wins zero. However, every winning margin is below 1%, with deltas ranging from 0.4% to 0.8%.

Q: How do their average benchmark scores compare?

A: The Core i9-8950HK has a higher average benchmark score of 2641, compared to the Xeon's 2550. This is partly because the i9 has additional Geekbench results in the database, which the Xeon lacks.

Q: Do both processors support ECC memory?

A: No. The Xeon E5-4640 v3 supports ECC memory, while the Core i9-8950HK does not. This is a significant differentiator for workstation and server reliability use cases.

Q: Are both processors unlocked for overclocking?

A: No. The Core i9-8950HK has an unlocked multiplier, while the Xeon E5-4640 v3 does not. The i9's boost clock of 4.70 GHz is already high, but the unlocked multiplier allows further tuning on supported platforms.

Q: What are their respective market segments?

A: The Xeon E5-4640 v3 is aimed at the Server/Workstation segment, while the Core i9-8950HK is a Mobile processor. This explains their different sockets: the Xeon uses Intel Socket 2011-3, and the i9 uses Intel BGA 1440.

Q: Which processor has more cores and threads?

A: The Xeon E5-4640 v3 has 12 cores and 24 threads. The Core i9-8950HK has 6 cores and 12 threads. Despite having half the cores, the i9 nearly matches the Xeon in multi-threaded Cinebench scores.

Architecture Differences

The two processors come from different eras and design philosophies. The Xeon E5-4640 v3 is built on the Haswell-EP architecture using a 22 nm process node, with a die size of 356 mm² and 2,600 million transistors. The Core i9-8950HK uses the Coffee Lake-H architecture on a 14 nm node, with a much smaller die at 149 mm². The transistor count for the i9 is not recorded in the database.

Core configuration is the most obvious split. The Xeon offers 12 cores and 24 threads, while the i9 offers 6 cores and 12 threads. Both share the same per-core L1 cache at 64 KB and L2 cache at 256 KB. The L3 cache differs substantially: the Xeon has 30 MB shared, while the i9 has 12 MB shared. This larger cache pool likely helps the Xeon maintain competitive scores despite its lower clock speeds.

Memory support also diverges. The Xeon supports DDR4 memory with a quad-channel bus and a recorded memory bandwidth of 59.7 GB/s. The i9 also supports DDR4, but its memory bus configuration and bandwidth are not recorded in the database. ECC memory is supported on the Xeon but not on the i9. The Xeon provides PCIe Gen 3 with 40 lanes from the CPU, while the i9's PCIe configuration is not listed.

The i9 includes integrated graphics in the form of UHD 630, while the Xeon has no integrated graphics recorded. The Xeon's base clock is 1.90 GHz with a boost of 2.60 GHz, while the i9 starts at 2.90 GHz and boosts to 4.70 GHz. The i9's multiplier is unlocked, the Xeon's is not. The Xeon was released in May 2015, while the i9 arrived in April 2018. Both are now end-of-life products.

The Verdict

The data points to a clear but nuanced conclusion. If the workload demands ECC memory, quad-channel bandwidth, or a server-grade platform with 40 PCIe lanes, the Xeon E5-4640 v3 is the only choice between these two. Its 12 cores and 24 threads provide headroom for heavily parallel server tasks, and its 30 MB of L3 cache is double that of the i9.

If the workload is mobile, power-sensitive, or requires high single-thread responsiveness, the Core i9-8950HK is the better fit. Its 4.70 GHz boost clock and unlocked multiplier give it an edge in scenarios not captured by the Cinebench suite, and its average benchmark score is higher overall. The i9 also includes integrated graphics, which the Xeon lacks entirely.

The benchmark results show that the Xeon wins every shared test, but the margins are so small that real-world differences would be imperceptible. The i9's additional Geekbench scores and higher average suggest it is the more versatile processor in the database's broader test set. The Xeon's launch MSRP was $2859, reflecting its workstation positioning, though the i9's launch price is not recorded.

Specification Differences

The two processors differ in nearly every major specification category. The Xeon has 12 cores and 24 threads, while the i9 has 6 cores and 12 threads. Base clocks are 1.90 GHz for the Xeon and 2.90 GHz for the i9. Boost clocks are 2.60 GHz and 4.70 GHz respectively. TDP is 105 W for the Xeon and 95 W for the i9.

The Xeon uses Intel Socket 2011-3, the i9 uses Intel BGA 1440. Architecture differs: Haswell-EP versus Coffee Lake-H. Process nodes are 22 nm versus 14 nm. Die sizes are 356 mm² versus 149 mm². The Xeon has 2,600 million transistors; the i9's count is not recorded. L3 cache is 30 MB shared versus 12 MB shared. The Xeon supports ECC memory, the i9 does not. The Xeon has quad-channel memory with 59.7 GB/s bandwidth; the i9's memory bus and bandwidth are not recorded. The Xeon has 40 PCIe Gen 3 lanes, the i9's PCIe is not listed. The i9 has UHD 630 integrated graphics, the Xeon has none. The Xeon's multiplier is locked, the i9's is unlocked. The Xeon's part number is SR22L, the i9's is SRCKN.

Where Each One Wins

The Xeon E5-4640 v3 wins in all six recorded Cinebench head-to-head tests, but only by fractions of a percent. Its advantages are structural rather than dramatic: ECC memory support, quad-channel bandwidth, 40 PCIe lanes, and double the L3 cache. These features matter for database servers, virtualized environments, and workstation workloads where data integrity and memory throughput are critical. The 12-core, 24-thread configuration provides ample parallelism for rendering farms or scientific computing, even if the clock speeds are modest.

The Core i9-8950HK wins in the broader benchmark picture. Its average score of 2641 exceeds the Xeon's 2550, and it has recorded Geekbench results that the Xeon lacks. The 4.70 GHz boost clock and unlocked multiplier make it the stronger choice for single-threaded applications, gaming, and any workload that responds to raw clock speed. Its integrated UHD 630 graphics and mobile BGA socket position it for laptops and compact systems where the Xeon's server platform would be impractical. The i9's 95 W TDP is also lower than the Xeon's 105 W, a meaningful difference in thermal-constrained environments.

The database's nearest rival data reinforces the split. The Xeon's closest competitors include the AMD Ryzen 7 4800HS and Intel Core i3-10325, while the i9 sits near the Intel Core i7-5820K and Core i7-7740X. These are different performance neighborhoods, and the i9's placement among desktop-class parts suggests it punches above its mobile designation. The Xeon, by contrast, is grouped with other server and workstation chips, reflecting its intended role. Neither processor is a clear overall winner; the correct choice depends entirely on whether the platform needs server features or mobile flexibility.