Intel Core i3-1005G1 vs Intel Core i3-7100T Comparison

The Intel Core i3-1005G1 and Intel Core i3-7100T are two very different interpretations of a dual-core processor. The 1005G1 is a low-power mobile part built on a modern 10nm process, while the 7100T is a desktop chip from an older generation with a higher thermal envelope. Despite their shared core and thread counts, the benchmark data reveals a fascinating split: the newer mobile chip dominates compute-heavy Cinebench workloads, while the older desktop part wins in Geekbench. This page analyzes those results, the architectural reasons behind them, and which processor is the right choice for specific use cases.

Head-to-Head Benchmarks

The most striking pattern in the head-to-head data is the absolute dominance of the Intel Core i3-1005G1 in Cinebench tests. Across five different Cinebench iterations, the 1005G1 wins by a remarkably consistent margin of roughly 28%. In Cinebench R23 multi-core, the 1005G1 scores 4070 against the 7100T’s 3175, a delta of 28.2%. The single-core results tell the same story: a 574 vs 448 score in R23 single-core, also a 28.1% advantage. This consistency is not a fluke; it reflects a fundamental performance advantage that scales across both single-threaded and multi-threaded rendering workloads.

The Cinebench R20 results reinforce this pattern. The 1005G1 posts a multi-core score of 1709, beating the 7100T’s 1333 by 28.2%. The single-core R20 score is 241 vs 188, again a 28.2% lead. Even the older Cinebench R15 multi-core test shows the 1005G1 ahead at 410 vs 319, a 28.5% delta. The data suggests that in any rendering or heavily computational task, the 1005G1 is the clear winner, despite being a mobile chip with a much lower base clock. The 1005G1’s boost clock of 3.40 GHz matches the 7100T’s fixed base clock, but the newer architecture clearly extracts more work per cycle.

However, the story flips entirely in Geekbench. The Intel Core i3-7100T wins the Geekbench multi-core test with a score of 2230, compared to the 1005G1’s 1978. This is an 11.3% advantage for the 7100T. The single-core Geekbench result is closer, with the 7100T scoring 1111 against the 1005G1’s 1083, a 2.5% lead. This is a significant divergence from the Cinebench results. Geekbench’s workload mix, which includes memory and encryption tests, seems to favor the desktop processor’s design, possibly due to its higher sustained base clock of 3.40 GHz versus the 1005G1’s 1.20 GHz base. The 1005G1 relies on boosting to reach its peak, while the 7100T runs at full speed continuously.

The overall benchmark score averages are nearly identical: the 1005G1 averages 1265, and the 7100T averages 1258. The 7100T’s nearest rival list includes the 1005G1 with a delta of -0.6%, while the 1005G1’s list includes the 7100T’s closest peer, the Intel Core i7-3615QM, at a 0.4% delta. This tells a nuanced story: the two chips are statistically equal in aggregate performance, but their strengths and weaknesses are highly workload-specific. The 1005G1 wins 5 of the 7 head-to-head benchmarks, but loses the two that matter for overall system responsiveness in certain applications.

Architecture Differences

The primary architectural difference is the process node and the resulting characteristics. The Intel Core i3-1005G1 is built on a 10 nm process (Intel), while the 7100T uses a 14 nm process. This shrunk node allows the 1005G1 to achieve a much lower TDP of 15 watts, compared to the 7100T’s 35 watts. This is a massive difference in power efficiency, suggesting the 1005G1 is designed for thin-and-light laptops, while the 7100T is a desktop part that can tolerate higher heat output.

The microarchitectures are also distinct generations. The 1005G1 uses the Ice Lake architecture (Sunny Cove cores), while the 7100T is based on Kaby Lake. The newer Sunny Cove design typically offers higher instructions-per-clock (IPC) and better branch prediction, which explains the Cinebench wins. The cache hierarchy differs slightly as well: the 1005G1 has 4 MB of shared L3 cache, while the 7100T has 3 MB. Both have identical 64 KB L1 and 256 KB L2 caches per core.

Memory bandwidth is another key differentiator. The 1005G1 supports dual-channel DDR4 with a bandwidth of 51.2 GB/s, while the 7100T also supports dual-channel DDR4 but caps out at 38.4 GB/s. This 12.8 GB/s difference could explain why the 1005G1 performs better in bandwidth-sensitive tasks like Cinebench, although it does not help in Geekbench, where the 7100T wins. The two chips also use different sockets: the 1005G1 is on Intel BGA 1526 (soldered), while the 7100T is on Intel Socket 1151 (user-replaceable). The 1005G1’s integrated graphics are UHD Graphics, whereas the 7100T uses Intel HD 630. Both support PCIe Gen 3, but the 7100T lists 16 lanes.

FAQ

Q: Which processor has a higher average benchmark score?

A: The Intel Core i3-1005G1 has an average benchmark score of 1265, which is just 7 points higher than the Intel Core i3-7100T’s 1258. This places them in the same performance tier, with the 1005G1 at the 35th percentile and the 7100T at the 34th percentile of all CPUs.

Q: Why does the 1005G1 win all Cinebench tests?

A: The 1005G1 wins every Cinebench test by a margin of 28.1% to 28.5%. This is likely due to its newer 10 nm Ice Lake architecture, which offers higher instructions-per-clock than the older 14 nm Kaby Lake design, despite the 1005G1’s lower base clock of 1.20 GHz.

Q: Is the 7100T better at anything?

A: Yes, the 7100T wins the Geekbench multi-core test by 11.3% (2230 vs 1978) and the single-core test by 2.5% (1111 vs 1083). This suggests it performs better in tasks that mimic Geekbench’s workload, which may favor its sustained 3.40 GHz base clock.

Q: What is the difference in power consumption?

A: The 1005G1 has a TDP of 15 watts, while the 7100T has a TDP of 35 watts. The 1005G1 is significantly more power-efficient, which is expected for a mobile processor, while the 7100T’s higher TDP allows for a higher base clock without boost technology.

Q: Do they have the same number of cores and threads?

A: Yes, both processors have 2 cores and 4 threads. They also have identical L1 and L2 cache sizes per core (64 KB and 256 KB respectively), but the 1005G1 has 4 MB of L3 cache compared to the 7100T’s 3 MB.

Q: Which processor is more recent?

A: The Intel Core i3-1005G1 was released on 2019-07-31, while the Intel Core i3-7100T was released on 2017-01-02. The 1005G1 is over two years newer, which explains its more advanced 10 nm process node.

The Verdict

The data presents a clear dichotomy. The Intel Core i3-1005G1 is the superior choice for anyone running Cinebench-style workloads, such as 3D rendering or video encoding, where it consistently outperforms the 7100T by over 28%. Its higher L3 cache (4 MB vs 3 MB) and faster memory bandwidth (51.2 GB/s vs 38.4 GB/s) likely contribute to this advantage. Additionally, its 15-watt TDP makes it ideal for fanless or lightweight mobile designs where power efficiency is critical.

The Intel Core i3-7100T, on the other hand, wins in Geekbench, which is often used as a proxy for general system performance, including web browsing, office applications, and light multi-tasking. Its 11.3% lead in Geekbench multi-core is substantial, and its higher base clock of 3.40 GHz means it does not rely on boosting to maintain performance under sustained loads. For a desktop user who prioritizes consistent, predictable performance in everyday tasks, the 7100T is the more reliable option.

The aggregate scores are nearly identical, with the 1005G1’s 1265 average barely edging out the 7100T’s 1258. This means neither chip is a universal winner. The choice comes down to the specific application. If the workload is heavily threaded and memory-bandwidth intensive, the 1005G1 is the pick. If the workload is more varied and benefits from a high sustained clock, the 7100T is the better fit. The 1005G1’s 5 wins out of 7 benchmarks are decisive in raw count, but the 7100T’s wins in Geekbench are significant for general-purpose use.

Specification Differences

• Base Clock: The 1005G1 has a base clock of 1200.00 MHz, while the 7100T has a base clock of 3400.00 MHz.
• Boost Clock: The 1005G1 has a boost clock of 3.40 GHz; the 7100T has no boost clock.
• TDP: The 1005G1 is rated at 15 watts, the 7100T at 35 watts.
• Socket: The 1005G1 uses Intel BGA 1526; the 7100T uses Intel Socket 1151.
• Architecture: The 1005G1 is Ice Lake (Sunny Cove-U); the 7100T is Kaby Lake.
• Process Node: The 1005G1 is on 10 nm; the 7100T is on 14 nm.
• L3 Cache: The 1005G1 has 4 MB shared; the 7100T has 3 MB shared.
• Memory Bandwidth: The 1005G1 supports 51.2 GB/s; the 7100T supports 38.4 GB/s.
• Integrated Graphics: The 1005G1 features UHD Graphics; the 7100T features Intel HD 630.
• PCIe: The 1005G1 supports Gen 3; the 7100T supports Gen 3, 16 Lanes (CPU only).
• Release Date: The 1005G1 launched on 2019-07-31; the 7100T launched on 2017-01-02.

Where Each One Wins

The Intel Core i3-1005G1 is the clear winner for multi-threaded rendering and compute tasks. Its Cinebench R23 multi-core score of 4070 is 28.2% higher than the 7100T’s 3175, and it wins all five Cinebench tests. This makes it the better choice for applications like video editing, 3D modeling, or any task that leverages the CPU’s full multi-threading capability. The 1005G1 also wins on power efficiency, with a 15-watt TDP versus 35 watts, making it the superior mobile solution.

The Intel Core i3-7100T takes the crown in Geekbench, which often reflects real-world application performance. Its multi-core score of 2230 is 11.3% ahead of the 1005G1’s 1978, and its single-core score of 1111 is 2.5% higher. This suggests it is better suited for general desktop use, including office productivity, web browsing, and software development, where a high sustained clock speed is more valuable than raw multi-threaded throughput. The 7100T’s standard Socket 1151 also means it can be easily upgraded or replaced on a desktop motherboard, offering more flexibility for system builders.

In summary, the 1005G1 wins on modern architecture, efficiency, and rendering performance. The 7100T wins on sustained clock speed and general-purpose Geekbench scores. The data does not declare a single victor; it defines two distinct use-case champions.