Intel Core Ultra 7 265 vs Intel Core Ultra X9 388H Comparison

Head-to-Head Benchmarks

The benchmark data presents a split picture, with the Intel Core Ultra 7 265 winning 14 of 17 recorded tests, while the Intel Core Ultra X9 388H takes 3 wins. The most dramatic difference appears in Cinebench R23 multi-core, where the Ultra 7 265 scores 42,216 against 18,911 for the X9 388H, a 123.2% advantage. Single-core R23 shows an even larger gap: 5,960 versus 2,200.5, a 170.8% delta in favor of the Ultra 7 265.

The Cinebench R15 results reinforce this pattern. The Ultra 7 265 delivers 4,255 multi-core points versus 2,955, a 44% lead, and 600 single-core points versus 309.5, a 93.9% advantage. However, the Cinebench R20 tests flip entirely. The X9 388H scores 13,101 multi-core and 1,849 single-core, while the Ultra 7 265 manages only 6,268 and 884 respectively. Both deltas sit at -52.2% from the perspective of the Ultra 7 265, meaning the X9 388H more than doubles the score in those specific workloads.

PassMark tests show consistent Ultra 7 265 wins across most categories. Data compression scores 522,983 versus 361,763, a 44.6% margin. Data encryption follows at 40,456 versus 28,490, a 42% lead. Extended instructions deliver 41,478 against 29,943, a 38.5% edge. Floating point math shows 172,776 versus 112,550, a 53.5% advantage. Integer math records 134,773 versus 90,882, a 48.3% difference. Random string sorting lands at 63,833 versus 44,010, a 45% gap. Prime number finding is closer: 418 versus 358, a 16.8% lead.

Multi-thread performance in PassMark gives the Ultra 7 265 a 49,682 score against 36,811, a 35% margin. Single-thread scores are closer, with 4,689 versus 4,280, a 9.6% edge. The lone PassMark win for the X9 388H comes in physics simulation, where it scores 3,226 versus 2,923, a 9.4% advantage.

The average benchmark score places the Ultra 7 265 at 64,640 with a 93rd percentile among all CPUs. Its nearest rivals include the AMD EPYC 4464P at 64,823 (-0.3%), the Core Ultra 7 265F at 64,438 (+0.3%), and the AMD EPYC 9124 at 65,104 (-0.7%). The X9 388H averages 44,466 at the 88th percentile, with closest competitors being the AMD Ryzen 5 7500X3D at 44,573 (-0.2%), Intel Core i9-13950HX at 44,342 (+0.3%), and AMD Ryzen AI Max 385 at 44,309 (+0.4%).

Architecture Differences

The two processors come from different architectural families. The Ultra 7 265 uses Arrow Lake, specifically the Arrow Lake-S desktop variant, while the X9 388H uses Panther Lake, the Panther Lake-H mobile variant. Both use a 3 nm process node, but the foundries differ: TSMC produces the Ultra 7 265, while Intel fabricates the X9 388H.

Core counts diverge substantially. The Ultra 7 265 has 20 cores and 20 threads, whereas the X9 388H has 16 cores and 16 threads. Neither processor uses hyper-threading, so threads equal cores in both cases. Base clocks differ modestly: 2.40 GHz for the Ultra 7 265 versus 2.10 GHz for the X9 388H. Boost clocks show a similar relationship, with 5.30 GHz versus 5.10 GHz.

Cache hierarchies share the same per-core structure, with 192 KB of L1 and 3 MB of L2 per core. The L3 cache differs notably: 30 MB shared for the Ultra 7 265 versus 18 MB shared for the X9 388H. The transistor count for the Ultra 7 265 is recorded at 17,800 million with a die size of 243 mm². No transistor or die size data exists for the X9 388H in the database.

Memory support separates the two clearly. The Ultra 7 265 uses DDR5 with dual-channel configuration and 102.4 GB/s bandwidth. The X9 388H uses LPDDR5X, also dual-channel, but with higher bandwidth at 153.6 GB/s. Neither supports ECC memory.

PCIe lane counts differ significantly. The Ultra 7 265 provides Gen 5 with 20 lanes from the CPU, while the X9 388H provides Gen 5 with only 4 lanes. Integrated graphics also differ: the Ultra 7 265 uses Arc Xe-LPG Graphics with 32 execution units, while the X9 388H uses Arc B390.

The form factor and socket reflect their intended markets. The Ultra 7 265 targets desktop use with Intel Socket 1851 and a 65 TDP. The X9 388H targets mobile with Intel BGA 2540 and a 25 TDP. Release dates show the Ultra 7 265 arriving on 2025-01-06 and the X9 388H on 2026-01-04. Both carry locked multipliers.

Where Each One Wins

The Ultra 7 265 dominates in rendering workloads as measured by Cinebench R15 and R23. The 123.2% multi-core advantage in R23 indicates that heavily threaded rendering tasks will complete roughly twice as fast on the desktop part. Single-core R23 performance at 170.8% higher suggests that even lightly threaded rendering jobs favor the Ultra 7 265 by a wide margin.

Data-focused tasks also go to the Ultra 7 265. Compression, encryption, extended instructions, floating-point math, integer math, and random string sorting all show margins between 38.5% and 53.5%. These workloads benefit from the higher core count and larger L3 cache. Prime number finding, a test sensitive to integer throughput, favors the Ultra 7 265 by 16.8%.

The X9 388H wins only three tests, but those wins are meaningful. The Cinebench R20 results, both multi-core and single-core, show the X9 388H at more than double the Ultra 7 265's score. This suggests the R20 workload maps differently onto the Panther Lake architecture, possibly due to scheduling or instruction-level differences that the database does not capture. The physics simulation win, at 9.4% higher, indicates an advantage in that specific computation pattern.

For general multi-threaded work, the PassMark multi-thread score gives the Ultra 7 265 a 35% lead. Single-thread performance is closer, with only a 9.6% gap, indicating that per-core efficiency is comparable between the two, with the desktop chip holding a modest edge.

FAQ

Q: Which processor has the higher core count?

A: The Intel Core Ultra 7 265 has 20 cores and 20 threads, while the Intel Core Ultra X9 388H has 16 cores and 16 threads.

Q: What is the average benchmark score difference?

A: The Ultra 7 265 averages 64,640, placing it in the 93rd percentile of all CPUs. The X9 388H averages 44,466, placing it in the 88th percentile.

Q: Does either processor support ECC memory?

A: No, both the Ultra 7 265 and the X9 388H have ECC memory support marked as false.

Q: Which chip has higher memory bandwidth?

A: The X9 388H supports LPDDR5X with 153.6 GB/s bandwidth, while the Ultra 7 265 supports DDR5 with 102.4 GB/s bandwidth.

Q: What are the socket types?

A: The Ultra 7 265 uses Intel Socket 1851 for desktop, and the X9 388H uses Intel BGA 2540 for mobile.

Q: How do the boost clocks compare?

A: The Ultra 7 265 boosts to 5.30 GHz, and the X9 388H boosts to 5.10 GHz.

Specification Differences

The two processors differ in several recorded specifications. Core count: 20 for the Ultra 7 265, 16 for the X9 388H. Thread count follows the same pattern: 20 versus 16. Base clock: 2.40 GHz versus 2.10 GHz. Boost clock: 5.30 GHz versus 5.10 GHz.

TDP differs substantially: 65 for the Ultra 7 265, 25 for the X9 388H. Socket type: Intel Socket 1851 versus Intel BGA 2540. Architecture: Arrow Lake versus Panther Lake. Codename: Arrow Lake-S versus Panther Lake. Generation: Ultra 7 (Arrow Lake) versus Ultra X9 (Panther Lake-H).

Process node is identical at 3 nm, but the foundry differs: TSMC versus Intel. Transistor count is recorded only for the Ultra 7 265 at 17,800 million. Die size is recorded only for the Ultra 7 265 at 243 mm². L3 cache: 30 MB versus 18 MB.

Memory support: DDR5 versus LPDDR5X. Memory bandwidth: 102.4 GB/s versus 153.6 GB/s. PCIe lanes: 20 versus 4, both Gen 5. Integrated graphics: Arc Xe-LPG Graphics 32EU versus Arc B390. Market segment: Desktop versus Mobile.

Release dates: 2025-01-06 for the Ultra 7 265, 2026-01-04 for the X9 388H. The launch MSRP for the Ultra 7 265 is $394; no launch MSRP is recorded for the X9 388H. Part numbers: SRQCX versus SA4QWQ9EK.

The Verdict

The benchmark data indicates that the Ultra 7 265 is the stronger performer in most measured workloads. It wins 14 of 17 head-to-head tests, with particularly large margins in Cinebench R23 multi-core (123.2%) and single-core (170.8%). Its 93rd percentile ranking versus the X9 388H's 88th percentile confirms the overall performance gap.

The X9 388H is not without merits. Its Cinebench R20 scores more than double those of the Ultra 7 265, and its physics simulation score is 9.4% higher. The mobile processor also delivers higher memory bandwidth at 153.6 GB/s versus 102.4 GB/s, which may benefit memory-sensitive tasks despite the lower core count.

The choice between these two depends on the use case. For desktop workloads involving rendering, data compression, encryption, and general computation, the Ultra 7 265 shows clear advantages across nearly every benchmark category. Its 20 cores and 30 MB of L3 cache support heavily threaded applications, and its 5.30 GHz boost clock provides strong single-thread performance.

For mobile applications where power consumption matters, the X9 388H operates at a 25 TDP versus 65, making it the lower-power option. Its 4 PCIe lanes and BGA 2540 socket suit compact systems. The Panther Lake architecture delivers competitive physics performance and unexpected Cinebench R20 results, even if the overall average score trails by 31.3% (64,640 versus 44,466).

Users needing maximum throughput in multithreaded desktop workloads should select the Ultra 7 265 based on the recorded data. Users constrained by mobile form factors and power limits should look to the X9 388H, accepting lower benchmark scores in exchange for the portability that the BGA socket enables.