Intel Core i5-1035G1 vs Intel Core i5-1135G7 Comparison

FAQ

Q: Which processor is faster in single-core workloads?

A: The Intel Core i5-1135G7 wins every recorded single-core benchmark. In Cinebench R23 single-core, it scores 1116 versus 855 for the i5-1035G1, a 23.4% lead. PassMark single-thread shows 2640 versus 2198, a 16.7% advantage.

Q: How do the two compare in multi-core rendering?

A: The i5-1135G7 leads across all multi-core tests. Cinebench R23 multi-core scores 7909 for the i5-1135G7 against 6062 for the i5-1035G1, a 23.4% gap. In Cinebench R20 multi-core, the margin is 3321 versus 2546, again 23.3% in favor of the newer chip.

Q: Do both processors have the same core and thread counts?

A: Yes. Both are 4-core, 8-thread parts. The difference in performance comes from architecture, clock speeds, and cache, not from core count.

Q: Which CPU has a higher boost clock?

A: The i5-1135G7 boosts to 4.20 GHz compared to 3.60 GHz for the i5-1035G1. Its base clock is also higher at 1500 MHz versus 1000 MHz.

Q: Is the i5-1035G1 still in production?

A: The database lists the i5-1035G1 as Active, while the i5-1135G7 is marked End-of-life. The i5-1135G7 carries a launch MSRP of $309; no MSRP is recorded for the i5-1035G1.

Q: Which chip has the larger L3 cache?

A: The i5-1135G7 has 8 MB of shared L3 cache, while the i5-1035G1 has 6 MB. The i5-1135G7 also has a much larger L2 cache at 1.25 MB per core versus 256 KB per core.

Architecture Differences

The i5-1035G1 is built on Ice Lake, specifically the Ice Lake-U platform, using the Sunny Cove-U core design. The i5-1135G7 moves to Tiger Lake with the Willow Cove-U architecture. Both are manufactured on Intel's 10 nm process, but the die sizes differ: the Ice Lake part measures 123 mm², while the Tiger Lake die grows to 144 mm².

The core and thread counts are identical at 4 cores and 8 threads, but the clock behavior diverges sharply. The i5-1035G1 runs a 1000 MHz base and 3.60 GHz boost. The i5-1135G7 starts at 1500 MHz base and reaches 4.20 GHz boost. That higher frequency envelope is a key driver of the performance gap.

Cache hierarchies also differ. L1 remains 80 KB per core on both. L2 jumps from 256 KB per core on Ice Lake to 1.25 MB per core on Tiger Lake. Shared L3 grows from 6 MB to 8 MB. The larger caches on the i5-1135G7 reduce memory pressure in cache-sensitive workloads.

Memory support expands on the newer part. The i5-1035G1 supports DDR4 only, while the i5-1135G7 supports DDR4 and LPDDR4X. Both use a dual-channel memory bus. The database records 51.2 GB/s of memory bandwidth for the i5-1035G1; no bandwidth figure is listed for the i5-1135G7.

PCIe capability differs as well. The i5-1035G1 offers PCIe Gen 3, while the i5-1135G7 provides PCIe Gen 4 with 4 lanes (CPU only). The integrated GPU also changes: the i5-1035G1 uses UHD Graphics, and the i5-1135G7 uses Iris Xe Graphics G7 80EU.

Sockets are different too. The i5-1035G1 uses Intel BGA 1526, while the i5-1135G7 uses Intel BGA 1449. Both are mobile parts with a 15 W TDP. Neither has an unlocked multiplier. The i5-1035G1 was released in 2019-07-31, and the i5-1135G7 followed on 2020-09-01.

Head-to-Head Benchmarks

The recorded head-to-head data shows a clean sweep: the i5-1135G7 wins all 17 comparisons, and the i5-1035G1 wins none. The smallest margins appear in integer math and single-thread tests, while the largest gaps appear in prime number finding and extended instruction workloads.

Cinebench results are consistent across versions. In Cinebench R15 multi-core, the i5-1135G7 scores 797 against 611, a 23.3% lead. Single-core R15 is 112 versus 86, a 23.2% margin. R20 multi-core repeats the pattern: 3321 versus 2546, 23.3%. R20 single-core is 468 versus 359, again 23.3%. R23 multi-core shows 7909 versus 6062, 23.4%, and R23 single-core shows 1116 versus 855, 23.4%. The consistency across all three Cinebench generations suggests the architectural and clock advantages scale evenly.

PassMark tests reveal where the Tiger Lake design helps most. The biggest single delta is in find prime numbers: 34 versus 19, a 44.1% advantage for the i5-1135G7. That workload is highly sensitive to clock speed and core efficiency, and the newer chip dominates. Extended instructions also favor the i5-1135G7 heavily: 7406 versus 5524, 25.4% ahead. Data encryption shows a 25.1% gap (5465 versus 4094), and physics is 26.7% ahead (577 versus 423).

The narrowest deltas are in integer math and single-thread tests. Integer math scores 31814 for the i5-1135G7 versus 26645, a 16.2% edge. PassMark single-thread is 2640 versus 2198, a 16.7% advantage. Floating-point math is 19221 versus 15483, a 19.4% gap. Data compression is 103380 versus 80534, 22.1% ahead. Random string sorting is 12625 versus 9782, 22.5% ahead. Multithread is 9512 versus 7211, 24.2% ahead.

The i5-1035G1 also holds its own in broader context. Its average benchmark score is 9684, with a 65th percentile ranking among all CPUs. Its nearest rivals include the Intel Core i7-3770 (delta of -0.2%), the AMD EPYC 7402P (1.6%), the Intel Core i7-7700HQ (2%), and the Intel Core 3 N350 (-2.2%). The i5-1135G7 has an average score of 9053 and also sits at the 65th percentile. Its nearest rivals are the Intel Core i5-8350U (0.6%), the Intel Xeon Gold 6346 (-1.1%), the Intel Xeon Gold 6330 (1.3%), and the Intel Core i7-8650U (1.4%). Interestingly, the i5-1035G1 has a higher average score than the i5-1135G7 despite losing every head-to-head test, which reflects the different mix of benchmarks included in each average.

The Verdict

The data points one direction: the i5-1135G7 is the faster processor in every recorded comparison. If the task is rendering, the Cinebench R23 multi-core result of 7909 versus 6062 makes the choice clear. If the task is single-thread responsiveness, the 1116 versus 855 R23 single-core gap is equally decisive. The 44.1% lead in prime number finding and the 25.4% edge in extended instructions show that the Tiger Lake design handles compute-heavy and instruction-dense workloads with far more headroom.

The i5-1035G1 is not a weak chip in absolute terms. Its 65th percentile ranking and average score of 9684 place it near the Intel Core i7-3770 and above the AMD EPYC 7402P in the database's aggregate metrics. But in direct comparison, it trails the i5-1135G7 by at least 16.2% in every shared benchmark. The only area where the older chip looks preferable is availability, since the database lists it as Active while the i5-1135G7 is End-of-life.

Buyers choosing between these two should pick the i5-1135G7 when performance matters, provided they can still source it. The i5-1035G1 remains a reasonable option for systems already designed around its BGA 1526 socket or for buyers who need a currently produced part. The i5-1135G7 also brings a newer PCIe generation, a larger cache pool, and a more capable integrated GPU, all of which appear in the recorded specifications. The i5-1035G1 offers the only listed memory bandwidth figure at 51.2 GB/s, but that does not offset the consistent benchmark losses.

Specification Differences

The two processors differ in every major specification category except cores, threads, TDP, L1 cache, ECC support, and multiplier unlock status.

• Architecture: Ice Lake (Sunny Cove-U) for the i5-1035G1; Tiger Lake (Willow Cove-U) for the i5-1135G7.
• Base clock: 1000 MHz versus 1500 MHz.
• Boost clock: 3.60 GHz versus 4.20 GHz.
• Socket: Intel BGA 1526 versus Intel BGA 1449.
• Die size: 123 mm² versus 144 mm².
• L2 cache: 256 KB per core versus 1.25 MB per core.
• L3 cache: 6 MB shared versus 8 MB shared.
• Memory support: DDR4 only versus DDR4 and LPDDR4X.
• Memory bandwidth: 51.2 GB/s recorded for the i5-1035G1; none recorded for the i5-1135G7.
• PCIe: Gen 3 versus Gen 4, 4 Lanes (CPU only).
• Integrated graphics: UHD Graphics versus Iris Xe Graphics G7 80EU.
• Production status: Active versus End-of-life.
• Release date: 2019-07-31 versus 2020-09-01.
• Launch MSRP: None recorded for the i5-1035G1; $309 for the i5-1135G7.
• Part number: SRGKGSRGKL versus SRK05.