Intel Core Ultra 5 245 vs Intel Core Ultra 5 338H Comparison

Intel Core Ultra 5 245 vs Intel Core Ultra 5 338H

The Verdict

The benchmark data presents a decisive performance hierarchy between these two Intel processors. The Intel Core Ultra 5 245 wins 16 of the 17 recorded head-to-head comparisons, while the Intel Core Ultra 5 338H takes a single victory. The average benchmark score for the desktop chip is 48995, placing it in the 90th percentile of all CPUs, while the mobile chip averages 33989, landing in the 84th percentile. The 245 sits within 0.8% of the Intel Core i5-14600K and within 0.5% of the AMD Ryzen 9 7900, showing it operates in the same performance class as those established desktop parts. The 338H sits within 0.3% of the Intel Core Ultra 7 165H and within 0.7% of the AMD EPYC 4244P.

The largest gap appears in Cinebench R23 multi-core, where the 245 scores 32924 against 16331 for the 338H, a 101.6% advantage. The single-core R23 test shows an even starker 127.4% delta. The data indicates the desktop part delivers roughly double the multi-threaded rendering performance in that specific workload. For users processing long rendering jobs, compiling code, or running heavily threaded simulations, the 245 is the clear choice from these results.

The 338H does claim the PassMark physics test with a score of 2697 versus 2569, a 4.7% edge. That single win, however, does not offset the consistent deficits elsewhere. The mobile chip trails by 34.8% in PassMark multi-thread, by 40.4% in integer math, and by 43.4% in floating point math. The data shows the 338H is positioned for mobile platforms where the 25 TDP and integrated Arc B370 graphics serve a different purpose, but raw compute throughput belongs to the 245.

The launch MSRP for the 245 is $270, and it is a desktop part on Intel Socket 1851. The 338H has no recorded launch MSRP and uses Intel BGA 2540. Buyers assembling a desktop system with upgrade potential should select the 245. Systems requiring a mobile processor with lower power draw should use the 338H, accepting the measured performance trade-off.

Architecture Differences

The two processors come from different Intel product generations and use distinct manufacturing approaches. The Intel Core Ultra 5 245 belongs to the Core Ultra Series 2, uses the Arrow Lake architecture under the codename Arrow Lake-S, and is fabricated on a 3 nm process at TSMC. The Intel Core Ultra 5 338H belongs to the Core Ultra Series 3, uses the Panther Lake architecture under the codename Panther Lake, and is fabricated on a 3 nm process at Intel. Both use 3 nm nodes, but the foundries differ, which affects transistor characteristics and design choices.

The core configurations differ substantially. The 245 provides 14 cores and 14 threads, while the 338H provides 12 cores and 12 threads. Neither processor enables Hyper-Threading, as thread counts equal core counts in both cases. The 245 has a base clock of 3.50 GHz and a boost clock of 5.10 GHz. The 338H operates at a much lower 1.90 GHz base and 4.70 GHz boost, reflecting its mobile power envelope.

Cache hierarchies show structural differences. Both chips share a per-core L1 cache of 192 KB. The L2 cache differs: the 245 has 3 MB per core, while the 338H has 2.5 MB per core. The shared L3 cache also differs, with the 245 offering 24 MB and the 338H offering 18 MB. The transistor count and die size are recorded only for the 245, at 17,800 million transistors on a 243 mm² die; those figures are not available for the 338H.

Memory support separates the two as well. The 245 supports DDR5 memory on a dual-channel bus with a recorded bandwidth of 102.4 GB/s and includes ECC memory support. The 338H supports LPDDR5X on a dual-channel bus with a higher recorded bandwidth of 136.5 GB/s, but it lacks ECC memory support. PCIe lanes also differ: the 245 provides Gen 5 with 20 CPU lanes, while the 338H provides Gen 5 with 4 CPU lanes.

The integrated graphics differ. The 245 uses Arc Xe-LPG Graphics with 64 execution units. The 338H uses Arc B370. Both are active production parts. The 245 launched on 2025-01-06, while the 338H has a recorded release date of 2026-01-04. Neither processor has an unlocked multiplier.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 5 245 has 14 cores and 14 threads. The Intel Core Ultra 5 338H has 12 cores and 12 threads.

Q: What is the performance difference in Cinebench R23 multi-core?

A: The 245 scores 32924 in Cinebench R23 multi-core, while the 338H scores 16331. The 245 leads by 101.6% in that test.

Q: Does the mobile processor win any benchmark?

A: The 338H wins the PassMark physics test with a score of 2697, compared to 2569 for the 245, a 4.7% advantage. It loses all other 16 recorded head-to-head comparisons.

Q: Which processor supports ECC memory?

A: The Intel Core Ultra 5 245 supports ECC memory. The Intel Core Ultra 5 338H does not support ECC memory.

Q: What are the memory bandwidth figures for each?

A: The 245 has a recorded memory bandwidth of 102.4 GB/s with DDR5 support. The 338H has a recorded memory bandwidth of 136.5 GB/s with LPDDR5X support.

Q: How do the processors compare in PassMark single-thread performance?

A: The 245 scores 4394 in PassMark single-thread, while the 338H scores 4180. The 245 leads by 5.1% in that test.

Specification Differences

The following fields differ between the Intel Core Ultra 5 245 and the Intel Core Ultra 5 338H:

• Series: Core Ultra Series 2 versus Core Ultra Series 3
• Cores: 14 versus 12
• Threads: 14 versus 12
• Base Clock: 3.50 GHz versus 1.90 GHz
• Boost Clock: 5.10 GHz versus 4.70 GHz
• TDP: 65 versus 25
• Socket: Intel Socket 1851 versus Intel BGA 2540
• Architecture: Arrow Lake versus Panther Lake
• Codename: Arrow Lake-S versus Panther Lake
• Generation: Ultra 5 (Arrow Lake) versus Ultra 5 (Panther Lake-H)
• Foundry: TSMC versus Intel
• Transistors: 17,800 million versus not available
• Die Size: 243 mm² versus not available
• L2 Cache: 3 MB (per core) versus 2.5 MB (per core)
• L3 Cache: 24 MB (shared) versus 18 MB (shared)
• Memory Support: DDR5 versus LPDDR5X
• Memory Bandwidth: 102.4 GB/s versus 136.5 GB/s
• ECC Memory: true versus false
• PCIe: Gen 5, 20 Lanes (CPU only) versus Gen 5, 4 Lanes (CPU only)
• Integrated Graphics: Arc Xe-LPG Graphics 64EU versus Arc B370
• Market Segment: Desktop versus Mobile
• Release Date: 2025-01-06 versus 2026-01-04
• Launch MSRP: $270 versus not available
• Part Number: SRVFE versus SA4REQ9EW

The L1 cache is identical at 192 KB per core. The memory bus is dual-channel for both. Neither has an unlocked multiplier.

Head-to-Head Benchmarks

The recorded data shows the Intel Core Ultra 5 245 dominates the benchmark suite. The most extreme gap appears in Cinebench R23 single-core, where the 245 scores 4648 and the 338H scores 2044, a 127.4% delta. That result indicates the desktop chip holds a massive single-thread advantage in that workload. The Cinebench R23 multi-core test shows a 101.6% delta, with scores of 32924 and 16331 respectively.

The Cinebench R20 results follow a similar pattern. The 245 leads by 35.4% in multi-core, scoring 13828 against 10213. The single-core R20 test shows a 35.5% delta, with scores of 1952 and 1441. The Cinebench R15 multi-core test shows a 32.5% delta, with scores of 3318 and 2504. The R15 single-core test shows the largest R15 gap at 53.4%, with scores of 468 and 305.

PassMark results reinforce the trend. The data compression test shows a 45% delta, with the 245 scoring 400942 and the 338H scoring 276539. Data encryption shows a 41.5% delta, with scores of 30236 and 21367. Extended instructions show a 39.3% delta, with scores of 33304 and 23906. Find prime numbers shows a 20.1% delta, with scores of 365 and 304. Floating point math shows a 43.4% delta, with scores of 120548 and 84067. Integer math shows a 40.4% delta, with scores of 91187 and 64934. Multi-thread shows a 34.8% delta, with scores of 38706 and 28717. Random string sorting shows a 44.2% delta, with scores of 49140 and 34082. Single-thread shows a 5.1% delta, with scores of 4394 and 4180.

The single 338H win comes in PassMark physics, where it scores 2697 against 2569 for the 245, a 4.7% delta. That result is the only recorded case where the mobile chip outperforms the desktop part. The win counts as one of 17 total comparisons, leaving the 245 with 16 wins. The average benchmark score of 48995 for the 245 versus 33989 for the 338H confirms the overall performance separation, with the desktop part holding an average advantage across the full recorded suite.