CPU Comparison

The Intel Core i3-4330 and Intel Core i5-2300 are two desktop processors from different eras of Intel's lineup, and their benchmark results paint a picture of a surprisingly close contest. The i3-4330, a 2-core/4-thread Haswell part, and the i5-2300, a 4-core/4-thread Sandy Bridge part, land within a fraction of a percent of each other in every Cinebench test. The data shows the i3-4330 edges out a victory in all five head-to-head benchmarks, but the margins are so slim that the choice between them will hinge on platform features and architectural extras rather than raw compute performance.

FAQ

Q: Which processor has the higher average benchmark score?

A: The Intel Core i3-4330 has an average benchmark score of 1020, while the Intel Core i5-2300 scores 1014. This puts the i3-4330 just 0.6% ahead in aggregate performance.

Q: How do the two CPUs compare in single-core performance?

A: The i3-4330 wins every single-core test, but by less than a single percentage point. In Cinebench R20 single-core, it scores 175 versus the i5-2300's 174, a 0.6% lead; in R23 single-core, it leads 418 to 416, a 0.5% margin.

Q: What is the biggest performance gap between the two in any benchmark?

A: The largest delta is in Cinebench R15 multicore, where the i3-4330 scores 298 against the i5-2300's 296. That is a 0.7% difference, which is the only test where the gap exceeds 0.6%.

Q: Do both processors support the same memory type?

A: Yes, both support DDR3 memory and run in dual-channel mode. Neither supports ECC memory.

Q: Are these CPUs comparable to any other processors in the database?

A: The i3-4330 sits near the Intel Pentium Gold G5600 (deltaPct -0.2%) and Intel Core i3-4160 (deltaPct 0.3%). The i5-2300 is closest to the Intel Xeon W5580 (deltaPct 0.2%) and Intel Core i7-2675QM (deltaPct 0.2%).

Q: Which CPU has a higher TDP?

A: The Intel Core i5-2300 has a TDP of 95 watts, whereas the Intel Core i3-4330 is rated at 54 watts. This makes the i3-4330 the more power-efficient part on paper.

The Verdict

Based strictly on benchmark data, the Intel Core i3-4330 is the winner, taking all five head-to-head Cinebench tests. However, the victory is purely symbolic; the largest margin is just 0.7% in R15 multicore. Anyone choosing between these two should not base the decision on compute performance, because the data shows they are effectively tied. The real differentiators are the platform and feature set.

Pick the i3-4330 if you value a newer architecture (Haswell vs Sandy Bridge), a smaller 22 nm process node, a more capable integrated GPU (Intel HD 4600 vs HD 2000), and significantly lower power draw. It is the more modern, efficient choice. Pick the i5-2300 if you prefer having four physical cores instead of two, a larger 6 MB shared L3 cache, and a higher 3.10 GHz boost clock. The i5-2300 also has a 95 TDP, which suggests it may require more robust cooling, but it offers a true quad-core layout. There is no performance-based reason to pick one over the other, so your motherboard socket (1150 vs 1155) and power budget should decide.

Head-to-Head Benchmarks

The benchmark results are remarkably consistent across all five tests, with the i3-4330 holding a narrow lead in each. In Cinebench R15 multicore, the i3-4330 scores 298 against 296 for the i5-2300, a 0.7% win. Moving to Cinebench R20, the multicore test shows the i3-4330 at 1245 versus 1237, a 0.6% advantage. The single-core R20 test is just as tight: 175 vs 174, again a 0.6% margin.

The trend continues in the more recent Cinebench R23 tests. In multicore, the i3-4330 scores 2966, edging out the i5-2300's 2947 by 0.6%. In single-core R23, the i3-4330 posts 418 against 416, a 0.5% lead. These margins are within the noise of typical benchmarking variance, but the consistency is telling: the i3-4330 never loses, and the i5-2300 never wins. The i3-4330's higher base clock of 3.50 GHz (versus 2.80 GHz) likely offsets the i5-2300's extra two physical cores, even when the i5-2300 boosts to 3.10 GHz. The result is a dead heat in practical terms, with the i3-4330 technically ahead in every measurement.

Specification Differences

The two CPUs differ in nearly every core specification. The i3-4330 has 2 cores and 4 threads, while the i5-2300 has 4 cores and 4 threads. The i3-4330's base clock is 3.50 GHz with no boost clock, whereas the i5-2300 runs at 2.80 GHz base and boosts to 3.10 GHz.

TDP is a major split: 54 watts for the i3-4330 versus 95 watts for the i5-2300. They use different sockets (Intel Socket 1150 vs 1155). The i3-4330 has 4 MB of shared L3 cache, while the i5-2300 has 6 MB. The i3-4330 is built on a 22 nm process with 1,400 million transistors on a 177 mm² die; the i5-2300 uses a 32 nm process with 1,160 million transistors on a larger 216 mm² die.

Integrated graphics differ significantly: the i3-4330 has Intel HD 4600, while the i5-2300 has Intel HD 2000. Both support DDR3 memory in dual-channel mode, and both have PCIe Gen 3, though the i5-2300 specifies 16 lanes (CPU only). The i3-4330 was released in 2013, while the i5-2300 came out in 2011 and is marked as end-of-life. Neither has an unlocked multiplier.

Architecture Differences

The architectural gap between these two is substantial. The i3-4330 uses the Haswell architecture, which is two generations newer than the Sandy Bridge architecture in the i5-2300. Haswell is fabricated on a 22 nm node, a significant shrink from Sandy Bridge's 32 nm. This explains the transistor count difference: 1,400 million on a 177 mm² die for Haswell, versus 1,160 million on a 216 mm² die for Sandy Bridge.

The i3-4330 compensates for having only two physical cores by using Hyper-Threading to reach 4 threads, while the i5-2300 has four full physical cores but no Hyper-Threading. The i5-2300's larger 6 MB L3 cache versus the i3-4330's 4 MB gives it an advantage in cache capacity, but the i3-4330's higher clock speed and newer IPC (instructions per clock) from Haswell close that gap in real workloads.

The integrated GPU is another architectural split. The i3-4330's HD 4600 is a much more capable iGPU than the i5-2300's HD 2000, making the newer part more viable for light gaming or media tasks without a discrete graphics card. The i3-4330 also supports PCIe Gen 3, while the i5-2300's PCIe Gen 3 with 16 lanes is listed as CPU-only, suggesting potential limitations on older chipsets. The i5-2300's 95 TDP versus the i3-4330's 54 TDP reflects the older, less efficient 32 nm process.

Where Each One Wins

The Intel Core i3-4330 wins in every single benchmark test, but the margins are negligible. Its strengths lie in efficiency and modern features. The 54 TDP makes it far easier to cool, and the 22 nm process means less heat output. The HD 4600 integrated graphics are a clear step up from HD 2000, giving the i3-4330 a decisive edge in any scenario that relies on the iGPU. The higher 3.50 GHz base clock also gives it an advantage in lightly threaded tasks, as evidenced by its consistent single-core wins, even if those wins are only 0.5-0.6%.

The Intel Core i5-2300 wins on paper in core count and cache. Four physical cores versus two (with Hyper-Threading) means it has more raw execution resources, and the 6 MB L3 cache versus 4 MB gives it more on-die storage for frequently accessed data. The 3.10 GHz boost clock provides a modest speed bump when thermal headroom allows. However, these advantages do not translate into benchmark victories. The i5-2300's wins are theoretical: it is a true quad-core, which could be more predictable in heavily multithreaded legacy software that does not benefit from Hyper-Threading, and the larger cache may help in specific workloads that fit within 6 MB.

In practical terms, the i3-4330 is the better choice for a modern, low-power build with decent integrated graphics. The i5-2300 makes sense only if you already own an LGA 1155 motherboard and need four physical cores. The benchmark data shows no performance reason to favor one over the other, so the decision rests entirely on platform compatibility and power priorities.