AMD Ryzen Threadripper 3990X vs Intel Core i3-1215U Comparison

The AMD Ryzen Threadripper 3990X and Intel Core i3-1215U represent two extreme poles of the processor market: a 64-core desktop monster versus a 6-core mobile chip. The benchmark data reveals a lopsided contest in raw throughput, yet a single notable victory for the Intel part suggests that the story is not entirely one-sided. This analysis compares their head-to-head results, explores where each processor excels, and determines which user profile aligns with each chip based strictly on the provided measurements.

Head-to-Head Benchmarks

The head-to-head comparison is dominated by the Threadripper 3990X, which wins 7 of the 8 shared benchmark tests. The margins in multi-threaded workloads are staggering. In Cinebench R23 multi-core, the AMD part scores 68124 against the Intel’s 6644, a delta of 925.3%. This pattern repeats across the entire Cinebench suite: R15 multi-core shows a 926.3% advantage (6866 vs 669), R20 multi-core a 925.5% advantage (28612 vs 2790), and the single-core variants also show massive leads ranging from 925.3% to 930.9%. The data indicates that the Threadripper’s sheer core count (64 cores vs 6) translates into an order-of-magnitude performance gap in rendering and compute-heavy tasks.

Geekbench multi-core tells a similar but slightly less extreme story. The Threadripper 3990X scores 20912, while the Core i3-1215U manages 4365, a 379.1% difference. This smaller delta percentage compared to Cinebench suggests that Geekbench’s workload scales less perfectly with the Threadripper’s massive parallel architecture, but the absolute score still leaves no doubt about which processor is faster for multi-threaded operations.

The single exception to AMD’s dominance is in Geekbench single-core. Here, the Intel Core i3-1215U edges out a win with a score of 1485 versus the Threadripper’s 1472, a delta of -0.9% from the AMD perspective. This is a narrow victory, but it is significant. It demonstrates that Intel’s Alder Lake architecture, despite having far fewer cores, can match or slightly exceed AMD’s Zen 2 in lightly-threaded, latency-sensitive tasks. The fact that the i3-1215U achieves this with a base clock listed at 1200.00 MHz (a figure that appears to be a typo for 1.20 GHz, but is the only number provided) versus the Threadripper’s 2.90 GHz base and 4.30 GHz boost highlights that architectural efficiency can offset raw clock speed in specific scenarios.

Where Each One Wins

The Threadripper 3990X is the unequivocal winner in any workload that can utilize more than a handful of threads. Its wins in Cinebench R15, R20, and R23 multi-core tests, where it holds a consistent 925%+ advantage, point to its suitability for 3D rendering, video encoding, and scientific simulation. The Geekbench multi-core result reinforces this, showing a 379.1% lead, which suggests that even mixed workloads that include some single-threaded components will heavily favor the AMD chip. The data implies that this processor is designed for a professional environment where time is money and parallel throughput is paramount.

The Core i3-1215U’s single win in Geekbench single-core is its primary claim to fame in this comparison. While the margin is small (-0.9% delta), it indicates that for everyday tasks like web browsing, office applications, and light coding, the Intel chip will feel just as responsive, if not slightly more so, than the Threadripper. The i3-1215U also has integrated graphics (UHD Graphics 64EU), a feature entirely absent from the AMD part. While no benchmark scores for the iGPU are provided, its presence means the Intel chip can power a system without a discrete graphics card, which is a functional win for basic computing and media playback. The Threadripper requires a separate GPU, making it unsuitable for a minimal, low-power build.

Looking at the broader benchmark data for the i3-1215U, its Passmark scores reveal strengths in specific niche areas. For example, it scores 116705 in data compression and 7041 in data encryption. While these numbers cannot be compared to the Threadripper (which lacks Passmark results in the data), they show that the mobile chip is not weak in all integer and I/O-bound tasks. The Threadripper’s wins are all in Cinebench and Geekbench, which are heavily weighted toward sustained multi-threaded performance.

The Verdict

The data presents a clear choice based on user needs, with no middle ground. The AMD Ryzen Threadripper 3990X is the pick for anyone whose work is defined by multi-threaded performance. The 925%+ deltas in Cinebench multi-core tests are not incremental improvements; they are generational leaps. If a user’s daily driver involves rendering a 3D scene, compiling large codebases, or processing video, the Threadripper will finish tasks in a fraction of the time. Its 68th percentile ranking among all CPUs, despite being from 2020, shows that it remains a top-tier performer for parallel workloads.

The Intel Core i3-1215U is the pick for a completely different audience. Its victory in Geekbench single-core signals that it is more than adequate for standard desktop productivity. The presence of integrated graphics makes it a self-contained solution for a laptop or a compact desktop. Its 67th percentile ranking, which is nearly identical to the Threadripper’s 68th, is deceptive; it is achieved through a balance of scores across many tests, whereas the Threadripper’s score is buoyed by extreme multi-core wins. For a user who prioritizes portability, low power consumption (15W TDP vs 280W), and snappy single-threaded response over raw multi-core muscle, the i3-1215U is the logical choice. Picking the Threadripper for email and browsing would be a massive waste of its capabilities, and picking the i3 for heavy rendering would result in impractically long wait times.

FAQ

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

A: The Intel Core i3-1215U wins the Geekbench single-core test with a score of 1485, while the AMD Ryzen Threadripper 3990X scores 1472, a delta of -0.9% from the AMD side.

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

A: The largest margin is in Cinebench R15 single-core, where the AMD Ryzen Threadripper 3990X leads by 930.9% (969 vs 94). In absolute terms, the biggest score difference is in Cinebench R23 multi-core, with a delta of 925.3% (68124 vs 6644).

Q: Does the Intel Core i3-1215U have integrated graphics?

A: Yes, the Intel Core i3-1215U features UHD Graphics 64EU. The AMD Ryzen Threadripper 3990X has no integrated graphics, meaning it requires a discrete GPU for display output.

Q: How do the two processors compare in terms of core and thread counts?

A: The AMD Ryzen Threadripper 3990X has 64 cores and 128 threads. The Intel Core i3-1215U has 6 cores and 8 threads.

Q: Which processor has a higher average benchmark score?

A: The AMD Ryzen Threadripper 3990X has an average benchmark score of 12786, while the Intel Core i3-1215U has an average of 12604. This is a difference of 182 points, which is less than 1.5%.

Q: Are there any benchmarks where the Intel Core i3-1215U is faster than the Threadripper?

A: In the head-to-head comparison, the Intel Core i3-1215U wins only the Geekbench single-core test. The AMD Ryzen Threadripper 3990X wins all seven other shared benchmarks, including all Cinebench tests and Geekbench multi-core.

Architecture Differences

The two processors are built on fundamentally different architectures. The AMD Ryzen Threadripper 3990X uses the Zen 2 architecture, codenamed Castle Peak, and is fabricated on a 7 nm process at TSMC. Intel’s Core i3-1215U uses the Alder Lake architecture, codenamed Alder Lake-U, on Intel’s 10 nm process. This node difference is crucial, as the smaller 7 nm process allows AMD to pack 30,400 million transistors across a die size of 8x 74 mm². The Intel chip’s transistor count and die size are not listed, but its 10 nm node and hybrid architecture suggest a different design philosophy focused on power efficiency.

The cache configurations are also starkly different. The Threadripper 3990X has 64 KB of L1 cache per core and 512 KB of L2 per core, with a massive 256 MB of L3 cache. The Core i3-1215U has 80 KB of L1 per core and 1.25 MB of L2 per core, but only 10 MB of shared L3 cache. This disparity in L3 cache (256 MB vs 10 MB) is a major factor in the Threadripper’s multi-threaded dominance, as it can hold far more working data on-die. The Intel chip’s larger L1 and L2 per-core caches may help its single-core efficiency, as evidenced by its Geekbench single-core win.

The memory interfaces differ as well. The Threadripper supports DDR4 memory with a quad-channel bus, providing a memory bandwidth of 102.4 GB/s. The Core i3-1215U supports both DDR4 and DDR5, but uses a dual-channel bus, and its memory bandwidth is not listed. The Threadripper’s higher memory bandwidth is essential for feeding its 64 cores, while the i3’s dual-channel setup is sufficient for its 6 cores. PCIe support also differs: the Threadripper offers Gen 4 with 64 lanes, while the i3 offers Gen 4 with 20 lanes.

Specification Differences

The most obvious specification difference is core count: the AMD Ryzen Threadripper 3990X has 64 cores and 128 threads, while the Intel Core i3-1215U has 6 cores and 8 threads. The base clocks are listed as 2.90 GHz for the AMD and 1200.00 MHz for the Intel (likely a data entry error for 1.20 GHz), with boost clocks of 4.30 GHz and 4.40 GHz respectively. The thermal design power (TDP) is dramatically different: 280W for the Threadripper versus 15W for the Core i3.

The socket types are incompatible: the Threadripper uses AMD Socket TRX4, while the Intel chip uses Intel BGA 1744, which is a soldered mobile package. The AMD part is a desktop processor with an unlocked multiplier, while the Intel is a mobile part with a locked multiplier. The Threadripper has a launch MSRP of $3990 and was released on 2020-02-06, while the Core i3 has no listed launch MSRP and was released on 2022-02-22. The Threadripper’s memory support is DDR4 with a quad-channel bus, while the Intel supports DDR4 and DDR5 with a dual-channel bus. The AMD chip has no integrated graphics, while the Intel includes UHD Graphics 64EU. Finally, the Threadripper is built on a 7 nm process by TSMC, while the Intel is on a 10 nm process by Intel.