Intel Core i3-8300 vs Intel Core i7-970 Comparison

The Verdict

The Intel Core i7-970 and Intel Core i3-8300 both sit at the 39th percentile among all CPUs in the database, meaning they occupy nearly the same performance tier overall, though they arrive there through different architectures and configurations. The i7-970 wins every recorded benchmark in the head-to-head comparison, taking all six tests with margins between 3.1% and 3.9%, so if the choice is purely about peak Cinebench scores, the i7-970 is the correct pick. However, the i3-8300 is a much newer Coffee Lake part with integrated graphics, a lower 62W TDP, DDR4 memory support, and ECC memory capability, which makes it the more practical choice for a modern, efficient desktop build where raw multi-threaded output is not the only consideration. The i7-970 is an end-of-life Westmere part from 2010 that requires the aging Socket 1366 platform, so buyers should only choose it if they already own a compatible board and want the slight benchmark edge, while the i3-8300 is the sensible option for anyone assembling a new system on Socket 1151 with DDR4. The data shows the i7-970 leads in every test, but the i3-8300 offers platform advantages that the benchmark scores alone do not capture.

Architecture Differences

The Intel Core i7-970 uses the Westmere architecture with the Gulftown codename, built on a 32 nm process at Intel's foundry, while the Intel Core i3-8300 uses the Coffee Lake architecture, also from Intel, on a 14 nm process. The i7-970 packs 1,170 million transistors into a 239 mm² die, whereas the i3-8300 has no transistor count recorded but a smaller 126 mm² die, reflecting the denser manufacturing process. The i7-970 has 6 cores and 12 threads thanks to Hyper-Threading, while the i3-8300 has 4 cores and 4 threads with no hyper-threading support. Cache layouts differ as well: both share 64 KB of L1 per core and 256 KB of L2 per core, but the i7-970 has 12 MB of shared L3 cache compared to 8 MB on the i3-8300. The i7-970 supports DDR3 memory over a triple-channel bus, while the i3-8300 supports DDR4 over a dual-channel bus with a recorded memory bandwidth of 38.4 GB/s. The i3-8300 includes Intel UHD Graphics 630 integrated graphics, while the i7-970 has no integrated graphics listed. The i7-970 uses PCIe Gen 2, whereas the i3-8300 has PCIe Gen 3 with 16 CPU lanes. The i3-8300 supports ECC memory, the i7-970 does not. The i7-970 has a higher 130W TDP and a base clock of 3.20 GHz with a boost clock of 3.47 GHz, while the i3-8300 has a 62W TDP, a base clock of 3.70 GHz, and no boost clock recorded. Both processors have locked multipliers.

Head-to-Head Benchmarks

The recorded data shows the Intel Core i7-970 winning all six head-to-head Cinebench tests, but by modest margins. In Cinebench R15 multi-core, the i7-970 scores 562 versus 545 for the i3-8300, a 3.1% advantage. In the single-core R15 test, the i7-970 scores 79 against 76, a 3.9% lead, which is the largest margin in the entire comparison. Moving to Cinebench R20, the i7-970 posts 2342 multi-core against 2271, again a 3.1% edge, and 330 single-core versus 320, another 3.1% lead. The R23 results follow the same pattern: 5577 multi-core against 5408, a 3.1% win, and 787 single-core versus 763, a 3.1% win. The consistency of the 3.1% margin across most tests suggests the i7-970's advantages in thread count and L3 cache translate into a steady, if not overwhelming, performance lead in Cinebench workloads. The single-core R15 result is the outlier at 3.9%, indicating that the older Westmere core still holds a slight edge in that specific test despite the i3-8300's higher base clock of 3.70 GHz versus 3.20 GHz. The average benchmark score reflects this overall balance: the i7-970 averages 1613, while the i3-8300 averages 1564, a gap of about 3.1% that aligns with the head-to-head deltas. Neither processor reaches far beyond its nearest rivals; the i7-970's closest competitor is the Core i3-9100T at 1620, just 0.5% higher, and the i3-8300's closest rival is the AMD Opteron 6282 SE at 1569, 0.3% higher, so both parts sit in a tightly packed performance band.

Specification Differences

The two processors differ across nearly every specification category. The i7-970 has 6 cores and 12 threads, while the i3-8300 has 4 cores and 4 threads. Base clocks are 3.20 GHz for the i7-970 and 3.70 GHz for the i3-8300, with only the i7-970 listing a boost clock of 3.47 GHz. TDP is 130W versus 62W, a significant efficiency gap in favor of the i3-8300. The i7-970 uses Socket 1366, the i3-8300 uses Socket 1151. Architecture is Westmere (Gulftown) versus Coffee Lake. Process node is 32 nm versus 14 nm. Die size is 239 mm² versus 126 mm², and transistor count is 1,170 million versus none recorded for the i3-8300. L3 cache is 12 MB shared versus 8 MB shared. Memory support is DDR3 triple-channel versus DDR4 dual-channel, with the i3-8300 recording 38.4 GB/s of memory bandwidth and the i7-970 recording none. ECC memory is false on the i7-970 and true on the i3-8300. PCIe is Gen 2 on the i7-970 versus Gen 3 with 16 CPU lanes on the i3-8300. Integrated graphics are absent on the i7-970, while the i3-8300 includes UHD Graphics 630. Release dates are July 2010 for the i7-970 and February 2018 for the i3-8300. The i3-8300 has a launch MSRP of $138, while the i7-970 has no recorded launch MSRP. Both are end-of-life desktop parts with locked multipliers.

FAQ

Q: Which processor is faster in Cinebench benchmarks?

A: The Intel Core i7-970 wins every recorded head-to-head Cinebench test, with margins of 3.1% in R15 multi-core, R20 multi-core, R20 single-core, R23 multi-core, and R23 single-core, and 3.9% in R15 single-core.

Q: Does the i3-8300 have integrated graphics?

A: Yes, the Intel Core i3-8300 includes Intel UHD Graphics 630, while the Intel Core i7-970 has no integrated graphics listed.

Q: Which processor supports ECC memory?

A: The Intel Core i3-8300 supports ECC memory, while the Intel Core i7-970 does not.

Q: How do the memory configurations differ?

A: The i7-970 supports DDR3 over a triple-channel bus, while the i3-8300 supports DDR4 over a dual-channel bus with a recorded memory bandwidth of 38.4 GB/s.

Q: What are the core and thread counts for each?

A: The i7-970 has 6 cores and 12 threads, while the i3-8300 has 4 cores and 4 threads.

Q: Are both processors still in production?

A: No, both are end-of-life parts. The i7-970 was released in July 2010, and the i3-8300 was released in February 2018.

Where Each One Wins

The Intel Core i7-970 wins in raw performance across all six recorded Cinebench tests, making it the choice for anyone who prioritizes maximum benchmark scores in these specific workloads. Its 6-core, 12-thread configuration with 12 MB of L3 cache gives it a consistent 3.1% to 3.9% advantage over the i3-8300, which matters for multi-threaded rendering tasks where every point counts. The i7-970 also wins on paper in transistor count, with 1,170 million versus no recorded figure for the i3-8300, and offers a larger die, which historically correlates with more execution resources. For users already on Socket 1366 with DDR3 memory, the i7-970 is the drop-in upgrade that delivers the highest Cinebench scores without changing the platform.

The Intel Core i3-8300 wins in platform modernity and efficiency. It has a 62W TDP versus 130W, so it generates less heat and requires less robust cooling, and its Socket 1151 platform supports DDR4 memory with 38.4 GB/s of bandwidth, compared to the older DDR3 triple-channel setup of the i7-970. The i3-8300 includes UHD Graphics 630, so it can run a display without a discrete GPU, something the i7-970 cannot do. It also supports ECC memory, which is important for users who need error-correcting memory in a workstation or server context. PCIe Gen 3 with 16 CPU lanes on the i3-8300 is a generation ahead of the i7-970's PCIe Gen 2, which affects modern GPU and NVMe storage performance. The i3-8300's higher base clock of 3.70 GHz versus 3.20 GHz does not translate into a single-core benchmark win in the recorded data, but it does indicate a more efficient core design on the 14 nm process. The i3-8300 also has a launch MSRP of $138, while the i7-970 has no recorded launch MSRP, which is the only pricing data available for either part.

In practical terms, the i7-970 is the benchmark leader and the correct pick for an existing Socket 1366 system where the user wants maximum Cinebench output and does not care about efficiency or modern features. The i3-8300 is the better choice for a new build, offering integrated graphics, ECC support, DDR4 memory, lower power draw, and a modern socket, all while trailing the i7-970 by only about 3% in the recorded tests. The data shows a clear split: the i7-970 wins every performance test, but the i3-8300 wins on every platform-level feature that matters for a current desktop system.