Intel Core i3-1315UE vs Intel Core i7-980X Comparison

The Intel Core i7-980X and Intel Core i3-1315UE represent two very different eras of Intel’s product line, yet the benchmark data places them in a surprisingly close contest. The i7-980X, a Gulftown-based desktop Extreme edition from 2010, relies on six physical cores and twelve threads. The i3-1315UE, a Raptor Lake-U mobile part from 2023, also has six cores but only eight threads. Despite the age gap, their average benchmark scores are nearly identical: the i7-980X sits at 1746, while the i3-1315UE trails slightly at 1739. Both occupy the 41st percentile of all CPUs, and their nearest rivals list overlaps with the Intel Core i5-6600 and AMD Ryzen 3 4300U. The data shows a clear sweep in the head-to-head tests, but the margins are consistently narrow, making this a tale of architectural efficiency versus raw core count.

Head-to-Head Benchmarks

The i3-1315UE wins every single benchmark test in the head-to-head comparison, taking all six categories. The largest victory comes in Cinebench R23 single-core, where the i3-1315UE scores 849 against the i7-980X’s 818, a delta of -3.7% (from the i7-980X’s perspective). The same pattern appears in Cinebench R20 single-core, with the i3-1315UE posting 356 versus 343, again a -3.7% difference. Multi-core tests tell a similar story. In Cinebench R23 multi-core, the i3-1315UE scores 6013, while the i7-980X manages 5797, a -3.6% gap. Cinebench R20 multi-core shows the i3-1315UE at 2525 and the i7-980X at 2434, also -3.6%. The older Cinebench R15 tests follow suit: multi-core 606 versus 584 (-3.6%) and single-core 85 versus 82 (-3.5%).

These margins are small but consistent. The i3-1315UE’s advantage hovers around 3.5% to 3.7% across every test, regardless of whether the workload is single-threaded or multi-threaded. This uniformity suggests the i3-1315UE’s newer architecture provides a modest but reliable edge in all scenarios. The i7-980X’s higher thread count (12 versus 8) does not translate into a multi-core win; instead, the i3-1315UE’s superior per-core efficiency and higher boost clock (4.50 GHz versus 3.60 GHz) carry the day. Notably, the i7-980X has a higher base clock (3.33 GHz versus 1200.00 MHz), but that does not help in burst workloads where the i3-1315UE can ramp up. In the broader context, both CPUs sit near the same performance tier: the i7-980X’s average score of 1746 is nearly matched by the i3-1315UE’s 1739, and their rival lists include the same mid-range parts. The i3-1315UE’s wins are real but hardly dominant; a 3.6% margin is the kind of difference that shows up in synthetic benchmarks but may be imperceptible in everyday use.

The Verdict

The data points to a clear, if narrow, victory for the Intel Core i3-1315UE across all tested benchmarks. If the decision rests purely on Cinebench scores, the i3-1315UE is the faster chip in every category, from R15 single-core to R23 multi-core. The i7-980X, despite being a six-core twelve-thread part from the Core i7 Extreme line, cannot overcome the architectural advantage of the newer Raptor Lake design. The i3-1315UE’s 4.50 GHz boost clock and modern 10 nm process give it a per-thread performance edge that the i7-980X’s older Westmere cores cannot match, even with a 3.60 GHz boost of its own.

However, the verdict is not one-sided in practical terms. The i7-980X remains a desktop processor with an unlocked multiplier, meaning it can be overclocked beyond its stock 3.60 GHz boost, while the i3-1315UE is locked and aimed at mobile systems. The i7-980X also supports triple-channel DDR3 memory, which could provide bandwidth advantages in memory-sensitive workloads, though the benchmark data does not isolate that factor. For a builder choosing between these two today, the i3-1315UE is the better performer out of the box, but the i7-980X offers overclocking headroom and a desktop socket (Intel Socket 1366) that may appeal to enthusiasts with legacy platforms. The i3-1315UE is an active, mobile part with integrated UHD Graphics 64EU, making it a self-contained solution for laptops or compact systems. The i7-980X is end-of-life, requires a discrete GPU, and draws 130 W TDP compared to the i3-1315UE’s 15 W. If raw benchmark scores are the sole criterion, the i3-1315UE wins; if platform flexibility and overclocking matter, the i7-980X has its place.

Architecture Differences

The architectural gap between these two CPUs is vast, spanning over a decade of Intel design. The i7-980X uses the Westmere architecture, specifically the Gulftown codename, built on a 32 nm process. It packs 1,170 million transistors into a 239 mm² die. The i3-1315UE uses the Raptor Lake architecture, codename Raptor Lake-U, on a 10 nm process. The i3-1315UE’s transistor count and die size are not listed in the data, but the process node alone indicates a significant efficiency improvement. The i7-980X is a desktop part from the Core i7 Extreme generation, while the i3-1315UE is a mobile part from the Core i3 Raptor Lake-U generation.

Cache layouts differ substantially. The i7-980X has 64 KB of L1 cache per core and 256 KB of L2 per core, with a shared 12 MB L3 cache. The i3-1315UE has 80 KB of L1 per core and 1.25 MB of L2 per core, with a shared 10 MB L3 cache. The i3-1315UE’s larger per-core L1 and L2 caches reflect a more modern design that emphasizes per-thread performance, while the i7-980X’s larger L3 (12 MB versus 10 MB) provides more shared cache for its twelve threads. Memory support also diverges: the i7-980X uses DDR3 with a triple-channel memory bus, while the i3-1315UE supports DDR4 and DDR5 with a dual-channel memory bus. The i3-1315UE also integrates graphics (UHD Graphics 64EU), a feature entirely absent from the i7-980X, which requires a separate GPU. PCIe support differs as well: the i7-980X has Gen 2, while the i3-1315UE has Gen 4 with 8 lanes (CPU only). Neither CPU supports ECC memory, and neither has a 3D V-Cache option.

Specification Differences

The two processors differ on nearly every specification line except for core count and manufacturer. The i7-980X has 6 cores and 12 threads, while the i3-1315UE also has 6 cores but only 8 threads. Base clocks are wildly different: the i7-980X runs at 3.33 GHz, while the i3-1315UE sits at a low 1200.00 MHz, though the i3-1315UE boosts to 4.50 GHz versus the i7-980X’s 3.60 GHz. TDP is a major differentiator: the i7-980X draws 130 W, while the i3-1315UE only needs 15 W. Sockets are incompatible: the i7-980X uses Intel Socket 1366, while the i3-1315UE uses Intel BGA 1744.

The process node moves from 32 nm (i7-980X) to 10 nm (i3-1315UE). The i7-980X has a transistor count of 1,170 million and a die size of 239 mm², while the i3-1315UE lists no transistor or die size data. Cache sizes differ as noted: 64 KB L1 and 256 KB L2 per core for the i7-980X versus 80 KB L1 and 1.25 MB L2 per core for the i3-1315UE; L3 is 12 MB shared versus 10 MB shared. Memory support moves from DDR3 triple-channel to DDR4/DDR5 dual-channel. PCIe generation jumps from Gen 2 to Gen 4, with the i3-1315UE limited to 8 CPU lanes. The i7-980X has no integrated graphics, while the i3-1315UE includes UHD Graphics 64EU. Market segments differ: desktop versus mobile. Production status is end-of-life versus active. Release dates are 2010-03-15 for the i7-980X and 2023-01-03 for the i3-1315UE. The i7-980X has an unlocked multiplier; the i3-1315UE is locked. The i7-980X has a part number (SLBUZ), while the i3-1315UE has none listed. Neither has a launch MSRP in the data.

FAQ

Q: Which CPU has more threads?

A: The Intel Core i7-980X has 12 threads, while the Intel Core i3-1315UE has 8 threads, despite both having 6 cores.

Q: Does the i3-1315UE outperform the i7-980X in all benchmarks?

A: Yes, the i3-1315UE wins all six head-to-head tests, including Cinebench R15, R20, and R23, in both single-core and multi-core variants, with margins of -3.5% to -3.7% from the i7-980X’s perspective.

Q: What is the TDP difference between these two CPUs?

A: The i7-980X has a TDP of 130 W, while the i3-1315UE has a TDP of 15 W, making the i3-1315UE far more power-efficient.

Q: Can the i7-980X be overclocked?

A: Yes, the i7-980X has an unlocked multiplier, whereas the i3-1315UE is locked and cannot be overclocked.

Q: Do these CPUs support ECC memory?

A: No, neither the i7-980X nor the i3-1315UE supports ECC memory.

Q: Which CPU has integrated graphics?

A: Only the i3-1315UE has integrated graphics, specifically UHD Graphics 64EU; the i7-980X does not include any integrated GPU.

Where Each One Wins

The i3-1315UE wins in every benchmark category, making it the obvious choice for raw performance in Cinebench workloads. Its wins span single-core and multi-core tests, with a consistent 3.5% to 3.7% advantage. In practical terms, this means the i3-1315UE is better suited for tasks that rely on per-thread speed, such as everyday productivity, web browsing, and lightly threaded applications. Its integrated UHD Graphics 64EU also makes it a complete package for a compact or mobile system without a discrete GPU. The 15 W TDP and active production status mean it is a current, efficient option for laptops or small-form-factor builds where power draw and heat are concerns.

The i7-980X, while losing all benchmark comparisons, still has distinct advantages that the data supports. Its 12 threads provide more simultaneous processing capacity, which could benefit heavily multi-threaded workloads if the per-core speed deficit is acceptable. The unlocked multiplier allows for overclocking, potentially closing or exceeding the 3.6% gap in the right cooling setup, though the 130 W TDP makes that a demanding proposition. The triple-channel DDR3 memory bus offers a different memory architecture, which might help in bandwidth-bound scenarios, though no benchmark data confirms this. The desktop socket (Intel Socket 1366) and end-of-life status make it a niche choice for retro builds or users with existing X58 platforms. For a builder with a legacy motherboard, the i7-980X is a drop-in upgrade path; for anyone starting fresh, the i3-1315UE is the faster and more efficient pick.