Intel Core i5-3550 vs Intel Core i7-2960XM Comparison

The Intel Core i5-3550 and Intel Core i7-2960XM represent two very different philosophies from the same era of Intel silicon: a locked, quad-core desktop part built on a newer process, versus an unlocked, quad-core-with-hyperthreading mobile Extreme edition on an older node. The benchmark data shows a remarkably consistent pattern: the i5-3550 wins every single head-to-head test, but by margins so narrow that they fall within the noise of everyday use. The i7-2960XM counters with hyperthreading, a larger cache, and an unlocked multiplier, yet the newer Ivy Bridge architecture of the i5-3550 gives it a small but decisive edge in every measured workload.

Head-to-Head Benchmarks

The sweep is total: six benchmark comparisons, six wins for the i5-3550. In Cinebench R15 multi-core, the i5-3550 scores 410 against the i7-2960XM’s 401, a 2.2% advantage. That same 2.2% delta appears in Cinebench R20 multi-core, where the i5-3550 posts 1710 versus 1674. The single-core results tell an identical story. In Cinebench R15 single-core, the i5-3550 edges ahead 57 to 56, a 1.8% lead. Cinebench R20 single-core shows 241 versus 236, a 2.1% gap. Cinebench R23 repeats the pattern: multi-core is 4073 against 3988 (2.1% ahead), and single-core is 575 against 563 (2.1% ahead).

None of these margins are large. The largest delta is 2.2%, and most sit at 2.1%. What matters is the direction — it never flips. The i7-2960XM has two additional threads (8 versus 4) and a larger L3 cache (8 MB versus 6 MB), yet it still loses in multi-threaded Cinebench workloads. That suggests the i5-3550’s newer Ivy Bridge architecture and higher base clock (3.30 GHz versus 2.70 GHz) more than compensate for the i7’s extra threads and cache. Both CPUs boost to the same 3.70 GHz, but the i5-3550 starts from a higher base frequency, which helps in sustained all-core loads.

Look at the broader context. The i5-3550’s average benchmark score is 1178, placing it in the 33rd percentile of all CPUs. Its nearest rivals include the i5-4440 at 1179 (-0.1% delta) and the i5-2400 at 1187 (-0.7% delta). The i7-2960XM averages 1169, also in the 33rd percentile, with its closest competitor being the i5-3570S at 1169 (0% delta) and the i7-3635QM at 1170 (-0.1% delta). Both chips sit in essentially the same performance tier; the i5-3550 is just slightly ahead within that tier. Geekbench results for the i7-2960XM (1851 multi-core, 581 single-core) are not directly comparable to the i5-3550’s Cinebench-only list, but they reinforce that this is a mid-pack performer, not an outlier.

Architecture Differences

The i5-3550 is built on Ivy Bridge, a 22 nm process, while the i7-2960XM uses Sandy Bridge on 32 nm. That process shrink matters: the i5-3550 packs 1,400 million transistors into a 160 mm² die, whereas the i7-2960XM has 1,160 million transistors on a larger 216 mm² die. Smaller transistor geometry generally means better power efficiency and higher clock potential per watt, and the benchmark results bear that out — the i5-3550 achieves higher scores despite having fewer threads and less cache.

Core and thread counts differ significantly. The i5-3550 is a 4-core, 4-thread part. The i7-2960XM is 4-core, 8-thread thanks to Hyper-Threading. In theory, that should give the i7 an advantage in heavily parallel workloads. It does not, at least not in Cinebench R15, R20, or R23 multi-core tests. The i5-3550’s higher base clock (3.30 GHz versus 2.70 GHz) and architectural improvements from Ivy Bridge apparently overcome the i7’s thread advantage. Both boost to 3.70 GHz, but the i5-3550 spends less time ramping up from a lower idle state.

Cache configuration also differs. Both have 64 KB L1 per core and 256 KB L2 per core. The L3 cache is where they diverge: the i5-3550 has 6 MB shared, while the i7-2960XM has 8 MB shared. That extra 2 MB of L3 did not translate into a performance win for the i7 in any tested workload. Memory support is identical — DDR3, dual-channel, 25.6 GB/s bandwidth — so that is not a differentiator.

Platform features separate them further. The i5-3550 uses Intel Socket 1155 with PCIe Gen 3 (16 lanes, CPU only), while the i7-2960XM uses Intel Socket G2 (988B) with PCIe Gen 2 (16 lanes, CPU only). The i5-3550 has Intel HD 2500 integrated graphics; the i7-2960XM has Intel HD 3000. The i7-2960XM has an unlocked multiplier — it is a mobile Extreme edition — while the i5-3550 is locked. The i7-2960XM also has a lower TDP of 55 W versus the i5-3550’s 77 W, which reflects its mobile design intent. Neither supports ECC memory.

The Verdict

The data is unambiguous: the Intel Core i5-3550 is the faster processor in every benchmark recorded. It wins all six Cinebench comparisons, with deltas ranging from 1.8% to 2.2%. For a desktop user, the i5-3550 is the better choice purely on performance. It also carries a significantly lower launch MSRP of $194, versus $1096 for the i7-2960XM, though pricing should not influence a decision based on the benchmark data alone.

The i7-2960XM is not without merit. It offers Hyper-Threading (4 cores, 8 threads), a larger 8 MB L3 cache, an unlocked multiplier for overclocking, and a lower 55 W TDP. Those features are real, but they did not produce a single benchmark win. The i7-2960XM’s niche is mobile platforms where its lower power draw and unlocked multiplier matter more than raw Cinebench scores. For a desktop build, the i5-3550’s newer architecture and higher base clock deliver better results in every test.

Consider the use case. If you are building a desktop and want the best out-of-the-box performance from these two options, the i5-3550 wins outright. If you need a mobile processor with overclocking headroom and Hyper-Threading, the i7-2960XM is the only one of the two that fits a laptop socket — the i5-3550 is a desktop part. The i7-2960XM’s lower TDP (55 W versus 77 W) also makes it more suitable for thermally constrained systems, even if it sacrifices a few percent of performance.

FAQ

Q: Which CPU is faster in multi-core Cinebench R23?

A: The Intel Core i5-3550 scores 4073, beating the Intel Core i7-2960XM’s 3988 by 2.1%.

Q: Does the i7-2960XM’s Hyper-Threading give it an advantage in multi-threaded tests?

A: No. Despite having 8 threads versus the i5-3550’s 4, the i7-2960XM loses in Cinebench R15 multi-core (401 versus 410), R20 multi-core (1674 versus 1710), and R23 multi-core (3988 versus 4073).

Q: Are the single-core performance gaps large?

A: No. The i5-3550 leads by 1.8% in Cinebench R15 single-core (57 versus 56), 2.1% in R20 single-core (241 versus 236), and 2.1% in R23 single-core (575 versus 563).

Q: Which CPU has a higher base clock?

A: The i5-3550 has a 3.30 GHz base clock, while the i7-2960XM runs at 2.70 GHz. Both boost to 3.70 GHz.

Q: Can the i7-2960XM be overclocked?

A: Yes, the i7-2960XM has an unlocked multiplier. The i5-3550’s multiplier is locked.

Q: What is the average benchmark score for each?

A: The i5-3550 averages 1178, and the i7-2960XM averages 1169. Both sit in the 33rd percentile of all CPUs.

Where Each One Wins

The Intel Core i5-3550 wins in every measured benchmark category. It takes Cinebench R15 multi-core (410 versus 401), R15 single-core (57 versus 56), R20 multi-core (1710 versus 1674), R20 single-core (241 versus 236), R23 multi-core (4073 versus 3988), and R23 single-core (575 versus 563). If your workload is any version of Cinebench — which is a proxy for general rendering and content creation — the i5-3550 is the better performer. It also has a higher base clock (3.30 GHz versus 2.70 GHz), which helps in sustained workloads that do not rely on boost behavior.

The Intel Core i7-2960XM wins in platform-specific categories that are not benchmark-based. It has an unlocked multiplier, enabling overclocking, while the i5-3550 is locked. It draws less power (55 W TDP versus 77 W), making it viable for mobile or thermally constrained systems. It includes Hyper-Threading, offering 8 threads for multitasking, and a larger 8 MB L3 cache. It also has Intel HD 3000 graphics, one generation newer than the i5-3550’s HD 2500. None of these advantages translated into a benchmark win, but they matter for specific use cases like laptop builds, overclocking experiments, or power-sensitive deployments.

Specification Differences

The two CPUs differ in nearly every major specification except for core count, L1/L2 cache, memory support, and ECC support. Both have 4 physical cores, 64 KB L1 and 256 KB L2 per core, dual-channel DDR3 memory with 25.6 GB/s bandwidth, and no ECC support. Here is where they diverge:

• Threads: i5-3550 has 4; i7-2960XM has 8.
• Base Clock: i5-3550 runs at 3.30 GHz; i7-2960XM at 2.70 GHz. Boost is identical at 3.70 GHz.
• TDP: i5-3550 draws 77 W; i7-2960XM draws 55 W.
• Socket: i5-3550 uses Intel Socket 1155; i7-2960XM uses Intel Socket G2 (988B).
• Architecture: i5-3550 is Ivy Bridge on 22 nm; i7-2960XM is Sandy Bridge on 32 nm.
• Transistors: i5-3550 has 1,400 million; i7-2960XM has 1,160 million.
• Die Size: i5-3550 is 160 mm²; i7-2960XM is 216 mm².
• L3 Cache: i5-3550 has 6 MB shared; i7-2960XM has 8 MB shared.
• PCIe: i5-3550 supports Gen 3, 16 lanes; i7-2960XM supports Gen 2, 16 lanes.
• Integrated Graphics: i5-3550 has Intel HD 2500; i7-2960XM has Intel HD 3000.
• Market Segment: i5-3550 is Desktop; i7-2960XM is Mobile.
• Multiplier: i5-3550 is locked; i7-2960XM is unlocked.
• Launch MSRP: i5-3550 at $194; i7-2960XM at $1096.
• Release Date: i5-3550 launched 2012-04-28; i7-2960XM launched 2011-09-03.