Intel Core 7 251TE vs Intel Core Ultra 9 285T Comparison

Where Each One Wins

The benchmark data is unambiguous in this matchup. Across all 17 recorded head-to-head tests, the Intel Core Ultra 9 285T takes the win. The Intel Core 7 251TE records zero wins in the database, while the Core Ultra 9 285T wins every single comparison. This is not a close contest with mixed results; it is a clean sweep for the Arrow Lake part.

Looking at the deltas, the Core Ultra 9 285T holds particularly large advantages in workloads that stress the processor's execution resources. The widest margin appears in PassMark's find prime numbers test, where the Core Ultra 9 285T scores 345 against 140 for the Core 7 251TE, a 59.4% difference. That kind of gap suggests the Ultra 9's architecture handles integer-heavy, branch-heavy code far more efficiently. Extended instructions show a 38.2% gap (27477 versus 16974), and floating point math shows a 37.9% gap (137923 versus 85607). These are not minor edges; they represent a fundamentally stronger execution core design.

The Core 7 251TE does keep some workloads relatively close. In PassMark integer math, the Core Ultra 9 285T wins by only 5.1% (132433 versus 125739). Data compression is closer still in percentage terms at 12.9% (384140 versus 334399), and random string sorting shows a 16.9% gap (47695 versus 39643). These results indicate that the 251TE's many threads can partially compensate in memory-bound or throughput-oriented tasks, but the Ultra 9 still comes out ahead in every case.

Cinebench results are consistent across all three versions. The Core Ultra 9 285T leads by 24% in R15 multicore (3384 versus 2572), R20 multicore (14100 versus 10717), and R23 multicore (33573 versus 25518). Single-core tests show a similar 24% to 24.1% advantage for the Ultra 9 in R15 (477 versus 362), R20 (1990 versus 1512), and R23 (4739 versus 3602). The consistency of these deltas across different Cinebench versions points to a steady architectural efficiency gain rather than a workload-specific quirk.

Architecture Differences

The two processors come from different Intel design families and use different manufacturing approaches. The Intel Core 7 251TE is built on Bartlett Lake, uses Intel's 10 nm process, and is fabricated by Intel. The Intel Core Ultra 9 285T is based on Arrow Lake, uses a 3 nm process, and is fabricated by TSMC. That process difference is substantial: a 10 nm node versus a 3 nm node. The Ultra 9 also packs 17,800 million transistors on a 243 mm² die, while the 251TE's transistor count is not listed in the database but its die size is 215 mm².

Both chips have 24 cores and 36 MB of shared L3 cache. The threading model differs, though. The 251TE supports 32 threads, meaning 8 of its cores provide two threads each (Hyper-Threading style). The Ultra 9 285T supports 24 threads, matching its core count exactly, so it runs one thread per core. This explains why the 251TE can keep up in some throughput tests despite the Ultra 9's architectural superiority.

Cache hierarchy differs as well. The 251TE has 80 KB of L1 per core and 1.25 MB of L2 per core. The Ultra 9 285T has 192 KB of L1 per core and 3 MB of L2 per core. That larger per-core cache on the Ultra 9 helps explain its single-thread and integer math advantages. More cache per core means more data can stay local to the execution units, reducing trips to the shared L3.

Memory support diverges. The 251TE supports both DDR4 and DDR5, while the Ultra 9 285T supports DDR5 only. Memory bandwidth is higher on the Ultra 9: 102.4 GB/s versus 89.6 GB/s for the 251TE. Both are dual-channel. Both support ECC memory.

PCIe connectivity also differs. The 251TE offers Gen 5 with 16 CPU lanes. The Ultra 9 285T offers Gen 5 with 20 CPU lanes. That extra headroom matters for systems with multiple high-bandwidth devices.

Integrated graphics are different. The 251TE uses UHD Graphics 770. The Ultra 9 285T uses Arc Xe-LPG Graphics with 64 execution units. No graphics benchmarks are in the database, but the architectural difference is clear from the naming and execution unit count.

Sockets are not shared. The 251TE uses Intel Socket 1700. The Ultra 9 285T uses Intel Socket 1851. This means the two chips are not drop-in interchangeable; they require different motherboards. The 251TE's launch MSRP is $384. The Ultra 9 285T's launch MSRP is $549.

The Verdict

The data points to a straightforward conclusion. The Intel Core Ultra 9 285T is the faster processor in every benchmark recorded in the database. Anyone building a system where CPU performance is the priority should choose the Ultra 9 285T, assuming the Socket 1851 platform is acceptable. Its wins are not marginal in most tests; the 24% Cinebench multicore advantage and the 30% plus advantages in encryption, physics, and extended instructions are meaningful for productivity and compute-heavy workloads.

The Intel Core 7 251TE still has a role. It supports DDR4 memory, which can reduce platform cost if the user already owns DDR4 modules. It also has a lower launch MSRP at $384 versus $549. The 251TE's 32 threads versus 24 threads give it a thread-count edge, but the benchmark data shows that the Ultra 9 285T's superior per-core efficiency overcomes that thread deficit in every measured test. The closest result, a 5.1% gap in integer math, shows the 251TE can be competitive in narrow scenarios, but it never actually wins.

The Ultra 9 285T also sits higher in the overall performance distribution. Its percentile rank among all CPUs is 91, while the 251TE sits at 88. The average benchmark score reflects the same hierarchy: 51310 for the Ultra 9 versus 41650 for the 251TE. The Ultra 9's nearest rivals include the Intel Core i9-14900T (0.6% ahead) and AMD Ryzen 9 5900XT (1.2% behind), while the 251TE's nearest rivals are clustered much closer, within 0.6% of its score, indicating it is a mid-pack performer among its peers.

FAQ

Q: Which processor has more threads?

A: The Intel Core 7 251TE has 32 threads, while the Intel Core Ultra 9 285T has 24 threads. Both have 24 cores.

Q: Do these processors use the same motherboard socket?

A: No. The Intel Core 7 251TE uses Intel Socket 1700, and the Intel Core Ultra 9 285T uses Intel Socket 1851.

Q: Which processor supports DDR4 memory?

A: The Intel Core 7 251TE supports both DDR4 and DDR5. The Intel Core Ultra 9 285T supports DDR5 only.

Q: What is the memory bandwidth difference?

A: The Intel Core Ultra 9 285T has a memory bandwidth of 102.4 GB/s, while the Intel Core 7 251TE has 89.6 GB/s.

Q: Which processor has a higher percentile rank among all CPUs?

A: The Intel Core Ultra 9 285T ranks at the 91st percentile, compared to the 88th percentile for the Intel Core 7 251TE.

Q: What is the largest benchmark margin between the two?

A: The largest margin is in PassMark's find prime numbers test, where the Intel Core Ultra 9 285T scores 345 versus 140 for the Intel Core 7 251TE, a 59.4% difference.

Head-to-Head Benchmarks

The Cinebench suite paints a consistent picture. In Cinebench R23 multicore, the Core Ultra 9 285T scores 33573 against 25518 for the Core 7 251TE, a 24% advantage. The R20 multicore test shows 14100 versus 10717, also 24% ahead. R15 multicore shows 3384 versus 2572, again 24% ahead. Single-core results mirror this: R23 single-core is 4739 versus 3602 (24% ahead), R20 single-core is 1990 versus 1512 (24% ahead), and R15 single-core is 477 versus 362 (24.1% ahead). These are large, uniform margins that indicate the Ultra 9's core design is simply more capable per clock.

PassMark's suite reveals where the Ultra 9 285T stretches its lead even further. Data encryption shows a 30.8% gap (32061 versus 22176). Physics tests show a 31.8% gap (2842 versus 1938). Extended instructions show a 38.2% gap (27477 versus 16974). Floating point math shows a 37.9% gap (137923 versus 85607). Find prime numbers shows the largest gap at 59.4% (345 versus 140). These workloads depend on raw execution throughput and cache efficiency, where the Ultra 9's 3 nm process and larger per-core cache pay off directly.

The closest results are worth examining because they show the 251TE's strengths. Integer math is nearly even: 132433 versus 125739, a 5.1% gap. Random string sorting is a 16.9% gap (47695 versus 39643). Data compression is a 12.9% gap (384140 versus 334399). These tests often benefit from high thread counts and memory bandwidth, and the 251TE's 32 threads help it close the distance. Even so, the Ultra 9 285T still wins each of these, meaning its architecture overcomes the thread disadvantage.

PassMark multithread and single-thread scores round out the comparison. Multithread shows 39931 versus 30022, a 24.8% gap. Single-thread shows 4576 versus 3568, a 22% gap. Both single-thread entries in the database (passmark_single_thread and passmark_singlethread) report the same scores, confirming that the single-core advantage for the Ultra 9 is stable across repeated measurements.

Specification Differences

The two processors differ in several key specification fields. The Intel Core 7 251TE is a Bartlett Lake part, while the Intel Core Ultra 9 285T is Arrow Lake. The 251TE uses a 10 nm process from Intel; the Ultra 9 uses a 3 nm process from TSMC. The Ultra 9 lists 17,800 million transistors on a 243 mm² die; the 251TE lists a 215 mm² die with no transistor count in the database.

Thread counts differ: 32 for the 251TE, 24 for the Ultra 9. Base clocks are identical at 1.40 GHz, and boost clocks are identical at 5.40 GHz. TDP differs: 45 watts for the 251TE, 35 watts for the Ultra 9. The Ultra 9 delivers higher performance at a lower thermal envelope.

Cache sizes differ. The 251TE has 80 KB L1 per core and 1.25 MB L2 per core. The Ultra 9 has 192 KB L1 per core and 3 MB L2 per core. Both share 36 MB of L3.

Memory support differs. The 251TE accepts DDR4 and DDR5; the Ultra 9 accepts DDR5 only. Memory bandwidth is 89.6 GB/s for the 251TE and 102.4 GB/s for the Ultra 9. Both are dual-channel and both support ECC.

PCIe lanes differ: 16 Gen 5 lanes for the 251TE, 20 Gen 5 lanes for the Ultra 9. Integrated graphics differ: UHD Graphics 770 for the 251TE, Arc Xe-LPG Graphics with 64 execution units for the Ultra 9.

Sockets differ: Socket 1700 for the 251TE, Socket 1851 for the Ultra 9. Release dates are close: January 12, 2025 for the 251TE and January 6, 2025 for the Ultra 9. Launch MSRP is $384 for the 251TE and $549 for the Ultra 9. Both are locked multipliers, both are active production parts, and both target the desktop market segment.