Intel Core i5-12500T vs Intel Core i9-9900 Comparison

The Intel Core i5-12500T and Intel Core i9-9900 represent two distinct philosophies in desktop computing: a modern, power-efficient six-core part against a legacy eight-core flagship. The benchmark data shows a clear split: the i5-12500T dominates in nearly every CPU-centric render test, while the i9-9900 claims victory only in Geekbench’s multi-core metric. With the i5-12500T winning 7 of 8 head-to-head comparisons, the overall average benchmark score sits at 4216 for the i5 versus 4163 for the i9, a 1.3% gap in favor of the newer chip. Both processors land at the 57th percentile among all CPUs, indicating they occupy a similar tier of overall performance despite their architectural differences.

Head-to-Head Benchmarks

The Cinebench suite provides the clearest picture of the i5-12500T’s advantage. In Cinebench R23 multi-core, the i5 scores 13913 against the i9’s 13509, a 3% lead. The single-core R23 result is likewise 3% in favor of the i5, with scores of 1964 and 1907 respectively. This pattern repeats across Cinebench R15 and R20. In R15 multi-core, the i5 posts 1402 versus 1361 (3% delta), and in single-core it scores 197 to 192 (2.6% delta). R20 multi-core shows 5843 against 5673 (3%), and single-core 824 against 800 (3%). What stands out is the consistency: across all six Cinebench tests, the i5-12500T wins by roughly 3%, never less than 2.6% and never more than 3%. This suggests a fundamental per-clock efficiency advantage that the i9’s higher boost clock cannot overcome.

The Geekbench results introduce a twist. In Geekbench single-core, the i5-12500T wins decisively with 1854 against 1687, a 9.9% margin — the largest single-test gap in the comparison. However, in Geekbench multi-core, the i9-9900 flips the script entirely, scoring 8175 versus the i5’s 7733, a 5.4% advantage for the older chip. This is the i9’s only win across the entire benchmark set. The multi-core Geekbench result likely reflects the i9’s two additional physical cores (8 versus 6) and four additional threads (16 versus 12). Interesting, the Cinebench multi-core tests do not show this same core-count benefit; the i5 still wins those by 3%. This divergence suggests that Geekbench’s multi-core workload scales more aggressively with thread count, while Cinebench’s render workload benefits more from the i5’s architectural improvements.

Looking at the average benchmark score, the i5-12500T’s 4216 sits 1.3% above the i9-9900’s 4163. The nearest rivals data reinforces this tight grouping. The i5-12500T’s closest competitor is the Intel Core i7-1265U at 4248 (0.7% higher), followed by the Intel Xeon E-2378 at 4232 (0.4% higher), then the i5-12500T itself, and finally the i9-9900 at 4163 (1.3% lower). For the i9-9900, its nearest rival is the Intel Core i5-11500H at 4187 (0.6% higher), then the AMD Ryzen 9 5980HS at 4121 (1% lower), and the AMD Ryzen 7 PRO 2700X at 4114 (1.2% lower). The i5-12500T falls 1.3% below the i9-9900 in the i9’s rival list, while the i9 falls 1.3% below the i5 in the i5’s rival list — a symmetrical relationship confirming they are near-peers.

FAQ

Q: Which processor wins more benchmark comparisons?

A: The Intel Core i5-12500T wins 7 of 8 head-to-head tests, losing only in Geekbench multi-core where the i9-9900 takes a 5.4% lead.

Q: What is the largest performance gap between the two?

A: The biggest margin is in Geekbench single-core, where the i5-12500T scores 1854 versus 1687 for the i9-9900, a 9.9% difference in favor of the i5.

Q: Does the i9-9900’s higher core count translate to multi-core wins?

A: Not consistently. The i9-9900 has 8 cores and 16 threads versus 6 cores and 12 threads for the i5-12500T, yet it only wins Geekbench multi-core (8175 vs 7733). The i5 still wins all three Cinebench multi-core tests by 3% each.

Q: How do the average benchmark scores compare?

A: The i5-12500T has an average benchmark score of 4216, while the i9-9900 averages 4163. This gives the i5 a 1.3% overall advantage.

Q: Are these processors at the same performance percentile?

A: Yes, both the i5-12500T and i9-9900 are at the 57th percentile among all CPUs, indicating they perform in the same tier despite their different architectures.

Q: What is the i9-9900’s production status?

A: The i9-9900 is listed as "End-of-life," whereas the i5-12500T is "Active." The i9-9900 had a launch MSRP of $423, while the i5-12500T has no launch MSRP listed.

Architecture Differences

The architectural divide between these two chips is substantial. The i5-12500T is built on Alder Lake architecture with a 10 nm process node, while the i9-9900 uses Coffee Lake architecture on a 14 nm process. This process shrink is a primary driver of the i5’s efficiency and per-clock performance gains. The die sizes reflect this: the i5 measures 163 mm², while the i9 is larger at 180.3 mm², yet the i5 packs more modern features into a smaller footprint. Both are manufactured by Intel, and neither supports ECC memory.

The cache hierarchies differ markedly. The i5-12500T has 80 KB of L1 cache per core, 1.25 MB of L2 per core, and 18 MB of shared L3 cache. The i9-9900 has 64 KB of L1 per core, 256 KB of L2 per core, and 16 MB of shared L3. The i5’s larger per-core L2 cache (1.25 MB versus 256 KB) is a significant architectural upgrade, likely contributing to its single-core dominance. The i5 also has 2 MB more L3 cache overall. Neither chip has 3D V-Cache.

The integrated graphics differ as well. The i5-12500T ships with UHD Graphics 770, while the i9-9900 has UHD Graphics 630. The i5 supports both DDR4 and DDR5 memory, whereas the i9 is limited to DDR4. Both use dual-channel memory buses, but the i9-9900 has a listed memory bandwidth of 42.7 GB/s; the i5 does not have a bandwidth figure in the data. The i5 supports PCIe Gen 5 with 20 lanes (CPU only), while the i9 supports PCIe Gen 3 with 16 lanes. This gives the i5 a two-generation PCIe advantage and four additional lanes.

Specification Differences

The core and thread counts are the most obvious divergence: the i5-12500T has 6 cores and 12 threads, while the i9-9900 has 8 cores and 16 threads. Clock speeds also differ, with the i5 having a base clock of 2000 MHz and a boost clock of 4.40 GHz, versus the i9’s base clock of 3.10 GHz and boost of 5.00 GHz. The i9’s higher base and boost clocks reflect its older, higher-power design. The thermal design power (TDP) is a major differentiator: the i5 is rated at 35 W, while the i9 draws 65 W — nearly double the i5’s power envelope.

The sockets are incompatible. The i5-12500T uses Intel Socket 1700, while the i9-9900 uses Intel Socket 1151. This means they cannot be swapped into the same motherboard. The process nodes differ as noted: 10 nm for the i5 versus 14 nm for the i9. The i5’s part number is SRL5W, while the i9’s is SRG18. The i9 has a release date of 2019-04-22, while the i5’s release date is not listed. The production statuses differ: the i5 is Active, the i9 is End-of-life. Neither processor has an unlocked multiplier. The i9 has a launch MSRP of $423, while the i5 has no launch MSRP data available.

Where Each One Wins

The Intel Core i5-12500T is the clear winner in single-threaded workloads. Its Geekbench single-core score of 1854 beats the i9’s 1687 by 9.9%, and it also wins every Cinebench single-core test by 2.6% to 3%. This makes it the better choice for applications that rely on per-core performance, such as older games, lightly-threaded productivity tools, and general desktop responsiveness. The i5 also wins all multi-core Cinebench tests, indicating its architecture handles render workloads more efficiently despite having fewer cores. Its 35 W TDP makes it a strong candidate for compact or low-power builds where thermal headroom is limited.

The Intel Core i9-9900 wins in Geekbench multi-core, scoring 8175 versus 7733, a 5.4% advantage. This suggests that certain multi-threaded workloads that scale well with raw thread count may favor the i9. Its 8 cores and 16 threads provide a two-core, four-thread advantage over the i5. Additionally, the i9’s higher base clock of 3.10 GHz (versus 2.00 GHz) may help in bursty workloads that do not sustain boost clocks. The i9 also has a higher boost clock at 5.00 GHz, although this does not translate to single-core benchmark wins.

The Verdict

The data points to the Intel Core i5-12500T as the stronger overall performer. It wins 7 of 8 head-to-head tests, including all Cinebench iterations and the crucial Geekbench single-core test. Its average benchmark score of 4216 exceeds the i9-9900’s 4163 by 1.3%. For users prioritizing single-core responsiveness, render performance in Cinebench-style workloads, and lower power consumption (35 W versus 65 W), the i5-12500T is the data-backed choice. Its modern 10 nm process, larger L2 cache, and PCIe Gen 5 support represent a generational leap over the i9’s 14 nm Coffee Lake design.

The Intel Core i9-9900 retains a niche for workloads that specifically benefit from its Geekbench multi-core lead. Users running applications that mirror Geekbench’s thread-scaling behavior may see a 5.4% advantage from the i9’s 8 cores and 16 threads. However, this single win is outweighed by the i5’s consistency across six Cinebench tests and the 9.9% single-core deficit the i9 suffers. The i9’s end-of-life status, higher TDP, and older socket further diminish its appeal. For a new build, the i5-12500T is the superior option based on benchmark results alone; for those already on Socket 1151 with a need for multi-threaded Geekbench performance, the i9-9900 remains a viable, albeit legacy, choice.