AMD Ryzen Threadripper 1900X vs Intel Core i7-1265U Comparison

The Intel Core i7-1265U and the AMD Ryzen Threadripper 1900X occupy oddly similar territory in the database despite being products of different eras and different design philosophies. Both sit at the 57th percentile versus all CPUs in the record, and their average benchmark scores of 4248 and 4073 respectively put them within roughly four percent of each other. Yet the recorded data shows a split personality: the i7-1265U wins seven of eight head-to-head benchmarks, while the Threadripper 1900X delivers a commanding multithreaded win in Geekbench. This comparison unpacks where each chip's strengths come from and which workloads favor which.

Head-to-Head Benchmarks

The Cinebench results are uniformly in Intel's favor, and by a nearly identical margin each time. In Cinebench R15 the i7-1265U scores 1567 multi-core and 221 single-core against the 1900X's 1440 and 203, an 8.8 and 8.9 percent gap respectively. Cinebench R20 repeats the pattern: 6530 versus 6000 multi-core (8.8 percent) and 921 versus 846 single-core (8.9 percent). Cinebench R23 lands at 15549 versus 14286 multi-core and 2195 versus 2016 single-core, again 8.8 and 8.9 percent in Intel's favor.

That consistency is itself informative. A margin that repeats to within a tenth of a percent across three Cinebench generations suggests a structural advantage rather than a test-specific quirk: the i7-1265U's newer architecture, higher 4.80 GHz boost clock, and additional cores (10 versus 8) translate into a stable rendering lead even though the Threadripper counters with 16 threads against Intel's 12.

The single-threaded picture is more lopsided. Geekbench single-core shows the i7-1265U at 1633 versus 1205 for the 1900X, a 35.5 percent advantage. This is the largest gap in the dataset and reflects the generational distance between the two parts: the Threadripper debuted on 2017-08-30, the i7-1265U on 2022-02-22, and five years of architectural progress show up most clearly in lightly threaded workloads.

The one Threadripper win is significant. In Geekbench multi-core the 1900X scores 6588 against 5365 for the i7-1265U, an 18.6 percent lead. Geekbench's heterogeneous workload mix evidently rewards the 1900X's 16 symmetric threads and its quad-channel DDR4 memory subsystem with 85.3 GB/s of bandwidth, whereas Cinebench's sustained all-core rendering appears to be constrained elsewhere on the older Zen design. The recorded data therefore shows two different multithreaded stories depending on the test suite used.

Where Each One Wins

The Intel Core i7-1265U wins wherever responsiveness and per-core throughput dominate. Its 35.5 percent Geekbench single-core lead and roughly 9 percent Cinebench single-core leads make it the stronger choice for applications that remain partially or fully single-threaded. Its seven benchmark wins out of eight also make it the better general-purpose performer across the measured suite, and it does all of this at a 15 W TDP, which is the defining constraint of its mobile segment. The presence of Iris Xe 96EU integrated graphics further broadens its applicability to systems without a discrete GPU.

The Threadripper 1900X wins in throughput-oriented, memory-hungry parallel workloads. Its 18.6 percent Geekbench multi-core advantage is the largest multithreaded margin in the dataset, and its platform provides resources the i7-1265U cannot match: 60 PCIe Gen 3 lanes versus 20 Gen 4 lanes, quad-channel versus dual-channel memory, and an unlocked multiplier for overclocking. Workloads that scale across many threads and saturate memory bandwidth, which the 85.3 GB/s figure supports, are where the 1900X justifies its 180 W TDP.

Context from each chip's nearest rivals sharpens the picture. The i7-1265U's average score of 4248 sits within one percent of the Intel Xeon E-2378 (4232), the Intel Xeon W-2140B (4272), the Intel Core i5-12500T (4216), and the Intel Xeon E5-4669 v3 (4285). The 1900X's 4073 average is similarly bracketed by the Intel Core i5-12500TE (4083), the Intel Xeon E-2278G (4052), the AMD Ryzen 7 PRO 2700X (4114), and the AMD Ryzen 9 5980HS (4121). In other words, both chips deliver mid-pack performance by current database standards, and the choice between them comes down to workload shape rather than raw class.

The Verdict

The data favors the i7-1265U for most users. It wins seven of eight benchmarks, leads by roughly 9 percent in every Cinebench test, and dominates single-threaded Geekbench by 35.5 percent. It achieves this at a 15 W TDP from a 10 nm process, making it suitable for thin and thermally limited designs in a way a 180 W desktop part cannot be. If the workload is mixed or lightly threaded, the i7-1265U is the clear pick.

The Threadripper 1900X is the pick when the workload is consistently parallel and platform connectivity matters. Its 18.6 percent Geekbench multi-core win, 60 PCIe lanes, quad-channel memory with 85.3 GB/s of bandwidth, and unlocked multiplier give it a distinct profile for multi-GPU or storage-heavy configurations. Users needing maximum sustained threaded throughput in the Geekbench-style workload mix should take the 1900X; everyone else, per the recorded data, should take the i7-1265U. The 1900X carries a launch MSRP of $549.

FAQ

Q: Which CPU wins more benchmarks overall?

A: The Intel Core i7-1265U wins seven of the eight head-to-head benchmarks, including all six Cinebench tests and Geekbench single-core. The AMD Ryzen Threadripper 1900X wins only Geekbench multi-core, but by a substantial 18.6 percent.

Q: How large is the single-core gap?

A: The i7-1265U scores 2195 in Cinebench R23 single-core versus 2016 for the 1900X, an 8.9 percent lead. In Geekbench single-core the gap widens to 35.5 percent, 1633 versus 1205.

Q: Does the Threadripper win anything?

A: Yes. Geekbench multi-core goes to the 1900X, 6588 versus 5365, an 18.6 percent advantage driven by its 16 threads and quad-channel memory.

Q: How do they compare in power consumption?

A: The i7-1265U is rated at a 15 W TDP, while the Threadripper 1900X is rated at 180 W. The desktop part requires far more cooling and power headroom.

Q: Can either CPU be overclocked?

A: The Threadripper 1900X has an unlocked multiplier. The i7-1265U does not.

Q: Which platform offers more PCIe lanes?

A: The 1900X provides 60 PCIe Gen 3 lanes from the CPU, while the i7-1265U provides 20 PCIe Gen 4 lanes. The Threadripper offers more lanes; the Intel chip offers a newer, faster generation.

Architecture Differences

The two CPUs come from different worlds. The i7-1265U is an Alder Lake-U mobile part built on Intel's 10 nm process, with a hybrid arrangement of 10 cores and 12 threads, a 1.80 GHz base clock, and a 4.80 GHz boost clock. Its cache hierarchy is per-core heavy: 80 KB of L1 and 1.25 MB of L2 per core, with 12 MB of shared L3. It supports both DDR4 and DDR5 on a dual-channel bus, includes Iris Xe 96EU integrated graphics, and fits the Intel BGA 1744 socket, meaning it is soldered and aimed at thin mobile systems.

The Threadripper 1900X is a first-generation Zen desktop part, codenamed Zen (Whitehaven), fabricated on GlobalFoundries' 14 nm process with 9,600 million transistors across two 213 mm² dies. It has 8 cores and 16 threads, a 3.80 GHz base and 4.00 GHz boost clock, and a cache layout of 96 KB L1 and 512 KB L2 per core with 32 MB of L3. Memory support is DDR4 only, but on a quad-channel bus delivering 85.3 GB/s, double the memory width of the Intel part. It uses the AMD Socket SP3r2, offers no integrated graphics, and supports ECC-disabled operation identical to the Intel chip, with neither part listed as ECC-capable.

These structural differences explain the benchmark split. The 1900X's two-die construction with abundant L3 and wide memory suits heavily threaded, bandwidth-sensitive work, which is exactly where its Geekbench multi-core win appears. The i7-1265U's modern 10 nm process, higher boost clock, and newer Alder Lake architecture deliver the per-thread efficiency behind its Cinebench sweep and its massive single-core lead, all within a power envelope an order of magnitude lower than its desktop rival. Both sit at the 57th percentile of the database, making this a contest of design intent rather than outright class, and the recorded numbers show each design succeeding on its own terms.