Intel Core i7-620UM

The Intel Core i7-620UM is a 2010-era mobile processor that, by modern benchmark standards, sits at the very bottom of the performance spectrum. With an average benchmark score of 319 and a 1st percentile ranking among all CPUs, it is effectively a legacy part. However, its 18 W TDP and integrated HD Graphics (Ironlake) made it a low-power option in its day, and it launched with an MSRP of $278. This analysis examines its benchmark behavior, platform fit, and position relative to its closest rivals.

Single-Thread vs Multi-Thread Behavior

The benchmark data reveals a striking divergence between single-thread and multi-thread performance. In Cinebench R23, the i7-620UM scores 130 in the single-core test and 927 in the multi-core test — a ratio of over 7:1. Similarly, in Cinebench R20, the single-core score is 54, while the multi-core score reaches 389, again a roughly 7× gap. This pattern indicates that the processor’s two physical cores, augmented by Hyper-Threading to four threads, provide a substantial parallel throughput advantage relative to its already low single-thread capability.

For real workloads, this split has clear implications. Tasks that depend on a single thread — such as many legacy games, script interpreters, or lightly threaded productivity applications — will run at a very low absolute speed. The 130-point R23 single-core score places the CPU in the bottom percentile of the database, so any interactive or latency-sensitive application will feel sluggish. Conversely, multi-threaded workloads that can utilize all four threads, such as basic video transcoding or batch file processing, will see a much higher throughput relative to the single-core result, though the absolute numbers remain far too low for any modern rendering or scientific workload.

The base clock of 1067 MHz and boost clock of 2.13 GHz further explain this behavior. The processor’s design prioritizes power efficiency over peak frequency, and the multi-core scaling suggests that the boost state is maintained across all cores during parallel tasks, yielding the observed 7× improvement. In practice, this means the i7-620UM is only usable for light, parallel-friendly tasks; anything that cannot spread across threads will be severely bottlenecked.

Who Should Consider It

Based on the benchmark scores and the 1st percentile ranking, this CPU is not suitable for any modern demanding workload. It could handle basic office tasks such as word processing, spreadsheet manipulation, and web browsing, provided the system has enough memory and a lightweight operating system. However, the single-core score of 130 in Cinebench R23 means that even simple UI interactions may feel unresponsive in modern environments.

For gaming, the data is unequivocal: the low single-thread performance and integrated HD Graphics (Ironlake) rule out any contemporary title. Even older games that rely on a single core would struggle to maintain playable frame rates. For creation workloads like video editing or 3D rendering, the multi-core score of 927 is far too low for practical use; a modern mid-range processor scores tens of thousands in the same test.

The 18 W TDP does make the i7-620UM attractive for fanless or passively cooled designs, but only in embedded or legacy systems where performance is not a priority. Given its end-of-life status and BGA 1288 socket, it is not a viable upgrade path for any current platform. Users who require a low-power x86 processor for simple, single-purpose tasks might find it acceptable, but for any interactive or compute-intensive use, it falls far short.

Benchmark Performance

The i7-620UM’s average benchmark score of 319 places it at the 1st percentile of all CPUs in the database — meaning it is slower than 99% of all tested processors. This is a stark indication of its performance class. In Cinebench R23, it scores 927 in multi-core and 130 in single-core; in R20, 389 multi-core and 54 single-core; and in R15, 93 multi-core. These figures are consistent with its overall standing.

When compared to its nearest rivals, the i7-620UM is effectively tied with them all. The Intel Celeron 2980U has an average score of 319, a delta of -0.1% relative to the i7-620UM. The Intel Pentium E5700 scores 320, a delta of -0.2%. The AMD Athlon II X2 210e scores 318, a delta of +0.3%. The Intel Celeron G1101 scores 317, a delta of +0.6%. These deltas are all within one percentage point, meaning the i7-620UM performs statistically identically to these entry-level desktop and mobile parts from the same era. The differences are negligible and would not be perceptible in real-world use.

The average score of 319 also matches the Celeron 2980U exactly, reinforcing the conclusion that the i7-620UM offers no performance advantage over its closest competitors. Its only distinguishing feature is its low TDP, which we will discuss later.

Platform and Compatibility

The i7-620UM uses the Intel BGA 1288 socket, which is a soldered mobile package. This means it is not upgradeable or replaceable in a standard socket; it is permanently attached to the motherboard. The platform is based on the Westmere architecture with the Arrandale codename, fabricated on Intel’s 32 nm process. The CPU integrates HD Graphics (Ironlake) and supports DDR3 memory in a dual-channel configuration, with a maximum memory bandwidth of 17.1 GB/s. ECC memory is not supported.

PCIe support is limited to Gen 2, which is adequate for the era but obsolete for modern high-bandwidth devices. The processor’s production status is end-of-life, so no new motherboards or systems are being manufactured with this chip. The lack of an unlocked multiplier further limits any overclocking potential, though the low TDP and BGA package would make such attempts impractical anyway. For anyone considering this CPU, the platform is a dead end: no upgrade path, no modern connectivity, and no support for current operating systems beyond legacy compatibility.

How It Compares

Intel Celeron 2980U: The i7-620UM is effectively tied with the Celeron 2980U, showing a -0.1% delta and an identical average score of 319. Both CPUs deliver the same overall throughput in the benchmark database, despite different architectures and power envelopes. The Celeron is a later, more efficient part, but in this dataset they are indistinguishable.

Intel Pentium E5700: Against the Pentium E5700, the i7-620UM trails by 0.2%, with the Pentium scoring 320. This is a negligible difference, well within measurement noise. The Pentium is a desktop dual-core without Hyper-Threading, yet its higher clock speed compensates, resulting in essentially equal performance.

AMD Athlon II X2 210e: The i7-620UM is 0.3% ahead of the Athlon II X2 210e, which scores 318. This is again a trivial margin. The Athlon is a low-power desktop part, and the two CPUs are in the same performance tier.

Intel Celeron G1101: The i7-620UM leads the Celeron G1101 by 0.6%, with the Celeron scoring 317. This is the largest delta among the nearest rivals, but still under one percent. The G1101 is a desktop Celeron with a similar dual-core design, and the i7-620UM’s Hyper-Threading gives it a slight edge in multi-threaded tests.

Overall, the i7-620UM sits at the very bottom of the performance ladder, and its closest rivals are all equally weak. None of these parts would be considered usable for modern computing tasks.

FAQ

Q: What is the TDP of the Core i7-620UM?

A: The TDP is 18 W.

Q: Does it support ECC memory?

A: No, ECC memory is not supported.

Q: What is the socket type?

A: It uses Intel BGA 1288, a soldered mobile package.

Q: How many threads does it have?

A: It has two physical cores and four threads via Hyper-Threading.

Q: What integrated graphics does it include?

A: It integrates HD Graphics (Ironlake).

Q: Is the multiplier unlocked?

A: No, the multiplier is locked.

Power and Thermals

With an 18 W TDP, the i7-620UM belongs to the ultra-low-power segment of mobile processors. This low thermal envelope allows for compact, passively cooled designs, though a small fan is also sufficient. The 32 nm process and 382 million transistors on an 81 mm² die contribute to its efficiency. The integrated HD Graphics (Ironlake) adds to the thermal load, but the overall power draw remains modest. For system builders, the thermal requirement is minimal, but the performance ceiling is equally low. The data shows that this CPU’s power efficiency is its primary selling point, not its computational capability. In a benchmark database that tracks thermal design power, the i7-620UM is one of the lowest-power x86 parts ever measured, but that advantage does not translate into any meaningful performance benefit.