Intel Core i5-1345UE vs Intel Core i7-8700T Comparison

The Intel Core i7-8700T and Intel Core i5-1345UE sit at opposite ends of the product spectrum—one is a 35 W desktop part from 2018, the other a 15 W mobile processor from 2023. Yet their average benchmark scores are nearly identical, with the i7-8700T averaging 2701 and the i5-1345UE averaging 2698. That places the i5-1345UE just 0.1% behind its older rival in the overall average, a margin so thin it is effectively a statistical tie. The data shows a fascinating generational clash, where a newer, lower-power chip matches an older desktop part despite operating in a fraction of the power envelope.

Head-to-Head Benchmarks

The head-to-head results are unambiguous: the Intel Core i5-1345UE wins all six recorded benchmark comparisons. In Cinebench R15 multicore, the i5-1345UE scores 940 against the i7-8700T’s 876, a delta of -6.8% from the perspective of the older chip. The single-core R15 test tells the same story, with the i5-1345UE posting 132 versus 123, again a 6.8% gap. These are not isolated results; the pattern repeats across every Cinebench iteration.

Cinebench R20 multicore shows the i5-1345UE at 3918 compared to 3653 for the i7-8700T, a 6.8% advantage. The single-core R20 result is 553 versus 515, a slightly larger 6.9% margin. Moving to R23, the i5-1345UE scores 9329 multicore and 1317 single-core, while the i7-8700T manages 8698 and 1228 respectively. The delta remains fixed at 6.8% for both R23 tests. The consistency of these margins—hovering between 6.8% and 6.9% across all six benchmarks—suggests a uniform performance advantage rather than a workload-specific quirk.

The Geekbench results are not part of the head-to-head table, but the individual benchmark data provides additional context. The i7-8700T scores 5168 in Geekbench multicore and 1343 in single-core. The i5-1345UE has no Geekbench entry in the data, so those numbers cannot be directly compared. However, the Cinebench series alone establishes a clear pattern: the i5-1345UE leads in every measured workload, with a consistent edge of nearly 7%.

It is importantly the i7-8700T’s nearest rivals include the Intel Xeon E-2226G at 2709 average score, the Intel Core i7-1185G7E at 2703, and the Intel Xeon E5-2640 v3 at 2703. The i5-1345UE sits at 2698, which is 0.1% below the i7-8700T’s 2701. This means the two CPUs are essentially tied in overall average, despite the i5-1345UE winning every individual Cinebench test. The discrepancy arises because the i7-8700T has Geekbench scores that boost its average, while the i5-1345UE lacks those entries.

Where Each One Wins

Based strictly on the benchmark data, the i5-1345UE wins every recorded workload. There is no test in the FACT PACK where the i7-8700T comes out ahead. The six Cinebench tests—R15, R20, and R23, each with multicore and single-core variants—all favor the i5-1345UE. The margins range from 6.8% to 6.9%, which is a meaningful gap for rendering and productivity tasks.

The i7-8700T’s only potential advantage lies in the Geekbench metrics, where it scores 5168 multicore and 1343 single-core. Since the i5-1345UE has no Geekbench scores listed, the i7-8700T cannot be beaten in that specific test—it simply has no rival data. This does not mean the i7-8700T wins; it means the comparison is incomplete for that benchmark. For any user relying on Cinebench as a proxy for rendering performance, the i5-1345UE is the clear choice.

The i7-8700T does have a higher average benchmark score of 2701 versus 2698, but this is driven entirely by the Geekbench inclusion. In head-to-head comparisons, the i5-1345UE is undefeated. The data suggests the i5-1345UE is better suited for tasks that stress multi-threaded workloads, like video encoding or 3D rendering, while the i7-8700T’s average is buoyed by a benchmark the newer chip does not have. The practical takeaway is that the i5-1345UE offers superior performance in the tested Cinebench suite, which is a common industry standard for CPU performance.

Architecture Differences

The two processors come from different eras and design philosophies. The i7-8700T uses the Coffee Lake architecture on a 14 nm process node, with a die size of 154 mm². It has 6 cores and 12 threads, with a base clock of 2.40 GHz and a boost clock of 4.00 GHz. Its cache hierarchy consists of 64 KB of L1 per core, 256 KB of L2 per core, and 12 MB of shared L3. The i7-8700T supports DDR4 memory in a dual-channel configuration, with a memory bandwidth of 42.7 GB/s. It uses PCIe Gen 3 with 16 lanes from the CPU, and its integrated graphics are UHD Graphics 630.

The i5-1345UE, in contrast, uses the Raptor Lake architecture on a 10 nm process node. It has 10 cores and 12 threads, with a base clock of 1400.00 MHz and a boost clock of 4.60 GHz. The cache configuration is notably different: 80 KB of L1 per core, 1.25 MB of L2 per core, and 12 MB of shared L3. The L3 cache is identical in total size to the i7-8700T’s, but the L1 and L2 caches are larger per core. The i5-1345UE supports both DDR4 and DDR5 memory in dual-channel mode, though the FACT PACK does not list a memory bandwidth figure. It uses PCIe Gen 4 with 8 lanes from the CPU, and its integrated graphics are Iris Xe Graphics 80EU.

The core count difference is significant: 10 cores versus 6. However, the thread count is identical at 12, which indicates the i5-1345UE likely uses a hybrid architecture with performance and efficiency cores, though the FACT PACK does not explicitly state this. The process node advantage—10 nm versus 14 nm—allows the i5-1345UE to achieve higher boost clocks (4.60 GHz versus 4.00 GHz) while operating at a much lower TDP of 15 W compared to 35 W. The socket also differs: the i7-8700T uses Intel Socket 1151, while the i5-1345UE uses Intel BGA 1744, reflecting the desktop versus mobile market segmentation.

Memory support is another differentiator. The i7-8700T is limited to DDR4, while the i5-1345UE supports both DDR4 and DDR5. PCIe connectivity favors the older chip in lane count (16 versus 8) but the newer chip in generation (Gen 4 versus Gen 3). The integrated graphics are also newer and more capable on the i5-1345UE, with Iris Xe Graphics 80EU replacing the older UHD Graphics 630.

The Verdict

From the data, the Intel Core i5-1345UE is the superior performer in every benchmark where both processors have results. It wins all six Cinebench tests with a consistent 6.8% to 6.9% margin. The i5-1345UE also offers more cores (10 versus 6), a higher boost clock (4.60 GHz versus 4.00 GHz), a newer process node (10 nm versus 14 nm), and a dramatically lower TDP (15 W versus 35 W). For any workload that relies on multi-threaded performance—such as rendering, compiling, or video editing—the i5-1345UE is the better choice based on the Cinebench scores.

The i7-8700T retains one statistical advantage: its average benchmark score of 2701 is 0.1% higher than the i5-1345UE’s 2698. This is due to the inclusion of Geekbench scores in its average, which the i5-1345UE lacks. However, this is a narrow and arguably misleading metric, since the head-to-head results show the i5-1345UE winning every direct comparison. The i7-8700T also has more PCIe lanes (16 versus 8) and a larger memory bandwidth figure (42.7 GB/s versus no listed value), which could matter for specific desktop use cases like high-speed storage or multiple GPUs.

The verdict is straightforward: the i5-1345UE is the better CPU for benchmark-driven performance, especially in Cinebench workloads. The i7-8700T is an end-of-life desktop part, while the i5-1345UE is active and mobile. If the choice is between these two for a new build or upgrade, the data points squarely toward the i5-1345UE. The only scenario where the i7-8700T might be preferable is if the user requires PCIe Gen 3 with 16 lanes or has a specific reliance on Geekbench scores, but even then, the performance gap in Cinebench is substantial.

FAQ

Q: Which CPU wins in multi-core performance?

A: The Intel Core i5-1345UE wins all multi-core Cinebench tests. It scores 940 in R15 multicore versus 876, 3918 in R20 multicore versus 3653, and 9329 in R23 multicore versus 8698. The margin is 6.8% in each case.

Q: Is the single-core performance also better on the i5-1345UE?

A: Yes. The i5-1345UE scores 132 in R15 single-core, 553 in R20 single-core, and 1317 in R23 single-core. The i7-8700T scores 123, 515, and 1228 respectively, with deltas of 6.8% to 6.9%.

Q: How do their average benchmark scores compare?

A: The i7-8700T has an average benchmark score of 2701, while the i5-1345UE averages 2698. This puts the i5-1345UE 0.1% behind the i7-8700T in overall average, despite winning every head-to-head Cinebench test.

Q: What are the core and thread counts for each processor?

A: The i7-8700T has 6 cores and 12 threads. The i5-1345UE has 10 cores and 12 threads.

Q: Do they support the same memory types?

A: No. The i7-8700T supports DDR4 only, with a memory bandwidth of 42.7 GB/s. The i5-1345UE supports both DDR4 and DDR5, with no memory bandwidth figure listed.

Q: What is the TDP difference between the two?

A: The i7-8700T has a TDP of 35 W, while the i5-1345UE has a TDP of 15 W. The i5-1345UE achieves higher benchmark scores while using less than half the power envelope.

Specification Differences

The two processors differ in several key specifications. The i7-8700T has 6 cores, while the i5-1345UE has 10 cores. Both have 12 threads. The base clock is 2.40 GHz for the i7-8700T and 1400.00 MHz for the i5-1345UE, though the boost clock favors the newer chip at 4.60 GHz versus 4.00 GHz. The TDP is 35 W for the i7-8700T and 15 W for the i5-1345UE. The socket differs: Intel Socket 1151 for the i7-8700T, Intel BGA 1744 for the i5-1345UE.

The architecture is Coffee Lake for the i7-8700T and Raptor Lake for the i5-1345UE. The process node is 14 nm versus 10 nm. The die size is 154 mm² for the i7-8700T, with no die size listed for the i5-1345UE. Cache configurations differ: the i7-8700T has 64 KB L1 and 256 KB L2 per core, while the i5-1345UE has 80 KB L1 and 1.25 MB L2 per core. Both share 12 MB of L3.

Memory support is DDR4-only for the i7-8700T, while the i5-1345UE supports DDR4 and DDR5. Both use dual-channel memory. Memory bandwidth is 42.7 GB/s for the i7-8700T, with no figure for the i5-1345UE. PCIe differs: Gen 3 with 16 lanes for the i7-8700T, Gen 4 with 8 lanes for the i5-1345UE. Integrated graphics are UHD Graphics 630 versus Iris Xe Graphics 80EU. The market segment is Desktop for the i7-8700T and Mobile for the i5-1345UE. Production status is End-of-life for the i7-8700T and Active for the i5-1345UE. Release dates are April 2018 for the i7-8700T and January 2023 for the i5-1345UE. Neither processor has a listed launch MSRP.