CPU Comparison

The Intel Core i5-2300 and Intel Core i7-880 are two end-of-life desktop processors from different architectural eras, yet their benchmark results land them in a near dead heat. The i5-2300, built on Sandy Bridge, and the i7-880, based on Nehalem, offer a fascinating case study in how generational efficiency can offset raw feature advantages. The data reveals a consistent, though narrow, victory for the newer i5 across all tested workloads.

Head-to-Head Benchmarks

The benchmark results show a clean sweep for the Intel Core i5-2300, though the margins are remarkably slim. In the Cinebench R15 multicore test, the i5-2300 scores 296 against the i7-880’s 294, a 0.7% lead. This pattern persists in Cinebench R20 multicore, where the i5-2300 posts 1237 versus 1227, representing a 0.8% advantage. The single-core results are equally tight; the i5-2300 leads with 174 to 173 in Cinebench R20 single-core, a 0.6% margin.

The largest gap appears in the Cinebench R23 single-core test, where the i5-2300 scores 416 against the i7-880’s 412, a 1% difference. In Cinebench R23 multicore, the i5-2300 again wins, scoring 2947 versus 2923, for a 0.8% lead. Across all five head-to-head benchmarks, the i5-2300 wins every single one, with deltas ranging from 0.6% to 1.0%. The average benchmark score reinforces this: the i5-2300 sits at 1014, while the i7-880 trails at 1006.

These numbers place both chips in the same performance tier. The i5-2300 holds a 28th percentile ranking among all CPUs, while the i7-880 sits just one point behind at the 27th percentile. The nearest rivals for the i5-2300 include the Intel Xeon W5580 and Core i7-2675QM, both matching its average score within 0.2%, while the Core i3-4160 sits 0.3% ahead. For the i7-880, its nearest competitors are the Core i5-10210Y and AMD FX-9830P, both tying its average score at 1006, with the Core i7-2630QM 0.1% ahead and the Intel Processor N100 0.1% behind.

The practical takeaway is clear: despite the i7-880’s higher clock speeds and additional threads, the i5-2300’s architectural efficiency delivers a marginal but consistent win. The 0.7% to 1% deltas are within run-to-run variance territory, but the uniformity of the results suggests the i5-2300 has a genuine, if small, edge.

Architecture Differences

The two processors represent distinct design philosophies from Intel. The i5-2300 uses the Sandy Bridge architecture on a 32 nm process node, packing 1,160 million transistors into a 216 mm² die. In contrast, the i7-880 is built on the older Nehalem architecture, specifically the Lynnfield codename, using a 45 nm process with 774 million transistors spread across a larger 296 mm² die. The newer 32 nm node allows the i5-2300 to achieve comparable performance with fewer resources.

Both chips feature four physical cores, but the threading situation differs. The i5-2300 has 4 threads, matching its core count, while the i7-880 supports 8 threads via Hyper-Threading. This gives the i7-880 a theoretical advantage in heavily threaded workloads, yet the benchmark data shows the i5-2300 still wins in multicore tests. The i5-2300 compensates with a more efficient core design and a higher-performing memory subsystem.

Cache configurations also diverge. Both share 64 KB of L1 and 256 KB of L2 per core, but the L3 cache differs: the i5-2300 has 6 MB shared, while the i7-880 offers 8 MB shared. The larger L3 on the i7-880 does not translate into a performance win, as the i5-2300’s architecture appears to use its smaller cache more effectively.

The sockets are incompatible: the i5-2300 uses Intel Socket 1155, while the i7-880 uses Intel Socket 1156. PCIe support also differs, with the i5-2300 offering Gen 3 with 16 lanes (CPU only), whereas the i7-880 is limited to Gen 2 with 16 lanes. The i5-2300 includes integrated graphics (Intel HD 2000), while the i7-880 has no integrated graphics at all. Both chips support DDR3 memory in dual-channel mode, and neither supports ECC memory.

Clock speeds favor the i7-880 on paper. The i7-880 runs at a 3.07 GHz base clock and boosts to 3.73 GHz, while the i5-2300 operates at 2.80 GHz base and 3.10 GHz boost. Despite the 0.27 GHz base and 0.63 GHz boost disadvantages, the i5-2300 still wins in benchmarks, underscoring the IPC (instructions per clock) gains of Sandy Bridge over Nehalem. Both chips have a 95 W TDP, meaning the i5-2300 delivers its performance at the same thermal envelope as the older part.

FAQ

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

A: The Intel Core i5-2300 edges out the i7-880 in single-core tests. In Cinebench R20 single-core, the i5-2300 scores 174 versus 173 for the i7-880, a 0.6% lead. In Cinebench R23 single-core, the i5-2300 scores 416 versus 412, a 1% advantage.

Q: Does the i7-880's 8 threads give it a multicore advantage?

A: No, the benchmark data shows the opposite. Despite having 8 threads versus the i5-2300's 4, the i7-880 loses all multicore tests. In Cinebench R15 multicore, the i5-2300 scores 296 against 294, and in Cinebench R23 multicore, it scores 2947 against 2923.

Q: How do these processors compare to their closest rivals?

A: The i5-2300's nearest rival, the Intel Xeon W5580, matches its average score of 1014 within 0.2%. The i7-880's closest rival, the Intel Core i5-10210Y, ties its average score of 1006 exactly. Both chips sit within 0.5% of their respective nearest competitors.

Q: What are the architectural differences between the two chips?

A: The i5-2300 uses Sandy Bridge on a 32 nm process with 1,160 million transistors, while the i7-880 uses Nehalem (Lynnfield) on a 45 nm process with 774 million transistors. The i5-2300 has a smaller die (216 mm² versus 296 mm²) and less L3 cache (6 MB versus 8 MB).

Q: Are these processors compatible with the same motherboards?

A: No, they use different sockets. The i5-2300 requires Intel Socket 1155, while the i7-880 uses Intel Socket 1156. They are not interchangeable.

Q: Which processor has a higher average benchmark score?

A: The i5-2300 has an average benchmark score of 1014, while the i7-880 scores 1006. This places the i5-2300 in the 28th percentile of all CPUs and the i7-880 in the 27th percentile.

The Verdict

The data points to a clear, though narrow, recommendation for the Intel Core i5-2300. It wins all five head-to-head benchmarks against the i7-880, with deltas ranging from 0.6% to 1.0%. Its average benchmark score of 1014 exceeds the i7-880's 1006, and it holds a one-percentile advantage in overall CPU rankings. For users choosing between these two end-of-life parts, the i5-2300 offers better performance in every tested workload.

The i7-880's 8 threads and higher clock speeds (3.07 GHz base, 3.73 GHz boost) do not overcome the architectural deficit of the older Nehalem design. The i5-2300 achieves its wins despite lower clocks (2.80 GHz base, 3.10 GHz boost) and fewer threads, proving the efficiency of Sandy Bridge. The i5-2300 also brings integrated graphics and PCIe Gen 3 support, features absent from the i7-880.

However, the margins are small enough that either chip would deliver a similar real-world experience. The 0.7% to 1% deltas are unlikely to be perceptible in daily use. The i7-880 does offer 8 MB of L3 cache versus 6 MB, which could benefit certain cache-sensitive workloads, though the benchmark results do not reflect this advantage. For a system builder, the i5-2300 is the safer pick based on performance data alone, but the i7-880 remains a viable alternative if its socket and features align better with an existing platform.

Specification Differences

The following specifications differ between the Intel Core i5-2300 and Intel Core i7-880:

• Threads: 4 (i5-2300) versus 8 (i7-880)
• Base Clock: 2.80 GHz (i5-2300) versus 3.07 GHz (i7-880)
• Boost Clock: 3.10 GHz (i5-2300) versus 3.73 GHz (i7-880)
• Socket: Intel Socket 1155 (i5-2300) versus Intel Socket 1156 (i7-880)
• Architecture: Sandy Bridge (i5-2300) versus Nehalem (i7-880)
• Codename: Sandy Bridge (i5-2300) versus Lynnfield (i7-880)
• Process Node: 32 nm (i5-2300) versus 45 nm (i7-880)
• Transistors: 1,160 million (i5-2300) versus 774 million (i7-880)
• Die Size: 216 mm² (i5-2300) versus 296 mm² (i7-880)
• L3 Cache: 6 MB shared (i5-2300) versus 8 MB shared (i7-880)
• PCIe: Gen 3, 16 Lanes (i5-2300) versus Gen 2, 16 Lanes (i7-880)
• Integrated Graphics: Intel HD 2000 (i5-2300) versus none (i7-880)
• Release Date: 2011-01-08 (i5-2300) versus 2010-05-29 (i7-880)
• Part Number: SR00D (i5-2300) versus SLBPS (i7-880)
• Generation: Core i5 (Sandy Bridge) versus Core i7 (Lynnfield)
• Average Benchmark Score: 1014 (i5-2300) versus 1006 (i7-880)
• Percentile: 28 (i5-2300) versus 27 (i7-880)