Intel Core i5-4330M vs Intel Core i7-950 Comparison

# The Verdict - who should pick which, strictly from the data

The benchmark data splits these two processors cleanly, and the verdict is straightforward. The Intel Core i7-950 wins every single head-to-head benchmark in the database. Across five Cinebench tests, the i7-950 leads by 1.8% to 2.1% in multi-threaded workloads, and by 1.8% in single-threaded tests. The Core i5-4330M, meanwhile, holds its own as the more efficient mobile part, with a 37W TDP versus the i7's 130W. The recorded data shows the i5-4330M at the 25th percentile of all CPUs, while the i7-950 sits at the 26th percentile, effectively neck and neck in overall standing.

For a builder prioritizing raw multi-core rendering, the Core i7-950 is the clear pick. Its older Bloomfield architecture still delivers a decisive lead in Cinebench R15, R20, and R23. The i5-4330M is not slow, but it is consistently behind, and it carries a 2-core, 4-thread configuration that shows up in every multi-thread test.

For a mobile or embedded system, the Core i5-4330M is the appropriate choice. The data shows it uses the Haswell architecture on a 22 nm process, compared to the 45 nm Bloomfield part, and it supports DDR3 memory. The i7-950 is a desktop part with a much higher 130W TDP and a triple-channel memory bus. The choice is a reflection of platform, not capability: the mobile part is the winner for the laptop class, the desktop part is the winner for the workstation class.

FAQ

Q: Is the Core i5-4330M a good CPU for gaming?

A: In a desktop context, no. The database shows it loses to the i7-950 in every Cinebench test, by around 2% in multi-core. It does have a boost clock of 3.80 GHz, which is higher than the i7's 3.33 GHz, but the i7-950 still wins in the recorded benchmarks.

Q: Does the Core i7-950 hold up in modern workloads?

A: The recorded Cinebench R23 scores show 392 single-core and 2780 multi-core. These are competitive scores, but the architecture is from the Bloomfield generation, and the part is end-of-life. It is a capable processor, but in a modern system, features like DDR3 support and Gen 2 PCIe are standard.

Q: What is the main difference in cores and cache?

A: The i5-4330M is a 2-core, 4-thread part with a 3 MB shared L3 cache. The i7-950 is a 4-core, 8-thread part with an 8 MB shared L3 cache. Both have 64 KB L1 and 256 KB L2 per core.

Q: Which one is better for a strictly single-threaded workload?

A: The single-core Cinebench R23 scores are 385 for the i5-4330M and 392 for the i7-950, a 1.8% difference. The i7-950 wins, but the gap is small. For a low-power mobile part, the i5-4330M is the better fit.

Architecture Differences

The architecture story is a tale of two eras. The Core i5-4330M is Haswell, a 22 nm part with 1.4 billion transistors and a 118 mm² die. It is a dual-core, 4-thread processor with a base clock of 2.80 GHz and a boost of 3.80 GHz. It integrates Intel HD 5000 graphics, supports DDR3 memory, and is made for the mobile market. The Core i7-950, on the other hand, is Bloomfield, a 45 nm part with 731 million transistors and a 263 mm² die. It is a quad-core, 8-thread part with a base of 3.07 GHz and a boost of 3.33 GHz. It is a desktop part, it supports triple-channel DDR3, and it has no integrated graphics.

The cache configuration is a clear difference: the i5 has 64 KB L1 and 256 KB L2 per core, with a 3 MB shared L3. The i7 has the same per-core L1 and L2, but doubles the L3 to 8 MB shared. The i5 uses a 22 nm process, the i7 uses 45 nm.

Specification Differences

| Field | Intel Core i5-4330M | Intel Core i7-950 |

|---|---|---|

| Cores / Threads | 2 / 4 | 4 / 8 |

| Base / Boost Clock | 2.80 / 3.80 GHz | 3.07 / 3.33 GHz |

| TDP | 37 W | 130 W |

| Socket | Intel Socket G3 | Intel Socket 1366 |

| Architecture / Process | Haswell / 22 nm | Nehalem / 45 nm |

| Cache | 64 KB L1 + 256 KB L2 per core, 3 MB shared L3 | 64 KB L1 + 256 KB L2 per core, 8 MB shared L3 |

| Memory support | DDR3 | DDR3, triple-channel |

| PCIe | Not specified | Gen 2 |

| Integrated graphics | Intel HD 5000 | None |

| Market segment | Mobile | Desktop |

| Transistors / Die size | 1,400 million / 118 mm² | 731 million / 263 mm² |

| Release | 2013-08-31 | 2009-06-01 |

Head-to-Head Benchmarks

The head-to-head table is one-sided. The Core i7-950 wins all five recorded comparisons. The largest win in the database is in Cinebench R15 multi-core: 280 to 274, a 2.1% difference. The same result is repeated in Cinebench R20 multi-core, where the i7 is 1.9% ahead (1167 to 1145). In single-core tests, the results are tighter: R20 single-core goes to the i7 by 1.8% (164 to 161), and R23 single-core goes to the i7 by the same 1.8% (392 to 385).

The i5-4330M is closer in the multi-core runs, but it never takes the lead. The data suggests the i7-950 has a consistent architecture advantage (4 more threads, more L3) that translates into a consistent 2% lead in Cinebench. The i5's higher boost clock of 3.80 GHz does not make up for two fewer cores.

Where each one wins

Choose the Core i7-950 if you are building a desktop tower and want the best possible render scores in this comparison. The database shows it ahead in each of the five tests, with the largest win of 2.1% in Cinebench R15 multi-core. It is also a true 4-core, 8-thread part, which is the better fit for heavy multi-threaded video encoding.

Choose the Core i5-4330M if your platform is a laptop, an ultra-compact system, or a system where power and thermals are the constraint. It gives up the rendering edge (about 2%) but cuts the TDP from 130W to 37W, a massive difference. It also adds Intel HD 5000 integrated graphics, a more modern 22nm process, and a 2013 release date. The i7-950 is end-of-life and the i5-4330M is the more recent platform for a mobile socket.

If the workload is mostly single-threaded, the decision is effectively a coin flip: the i7-950 is 1.8% faster but the i5-4330M has a higher boost clock and a much lower power envelope. For a mobile system, the i5 is the practical recommendation; for a desktop render box, the i7 is the measured winner.