AMD Opteron 3365 vs Intel Core i7-3635QM Comparison

Where Each One Wins

The benchmark data splits cleanly between these two processors, and the short version is that the Intel Core i7-3635QM wins every recorded head-to-head test. Across five Cinebench comparisons, the Intel part takes all five, with a consistent performance margin of roughly 14.5 percent in each workload. The AMD Opteron 3365, despite having twice the physical core count, does not secure a single win in the shared benchmark suite.

The Intel Core i7-3635QM dominates in both single-core and multi-core Cinebench workloads. In Cinebench R15 multi-core, it scores 408 against the Opteron's 349, a 14.5 percent gap. The story repeats in Cinebench R20 multi-core, where Intel scores 1703 versus AMD's 1457, and in Cinebench R23 multi-core, where Intel hits 4057 against AMD's 3470. Each of those results shows a 14.4 to 14.5 percent advantage for Intel.

Single-core performance is even more decisive in relative terms, though the absolute scores are lower. In Cinebench R20 single-core, Intel posts 240 versus AMD's 205, and in Cinebench R23 single-core, Intel scores 572 versus AMD's 489. Both represent the same 14.5 percent margin. The Opteron's higher core count does not translate into a win in any threaded test, which suggests the Intel architecture extracts more useful work per clock cycle across the board.

The database also records Geekbench results for the Intel part only: 1790 multi-core and 532 single-core. Those numbers position the i7-3635QM as a balanced mobile processor, though there is no directly comparable Geekbench figure for the AMD Opteron in the dataset to establish a head-to-head in that suite.

In terms of overall percentile ranking, the two chips are nearly identical. The AMD Opteron 3365 sits at the 34th percentile of all CPUs in the database, while the Intel Core i7-3635QM sits at the 33rd percentile. Their average benchmark scores are close as well: 1194 for the Opteron and 1170 for the i7-3635QM. The Opteron's nearest rivals include the AMD Athlon PRO 300U and Intel Core i3-4170, both with an average score of 1193, a 0.1 percent difference. The Intel chip's nearest rivals include the Intel Core i7-2960XM and Core i5-3570S, both at 1169, also within 0.1 percent. This context shows that while the Intel part wins the direct comparisons, both chips occupy a similar performance tier in the broader CPU landscape.

Architecture Differences

The two processors come from fundamentally different design philosophies. The AMD Opteron 3365 uses the K10 architecture under the Delhi codename, part of the Opteron 3000 series. It is built on a 32 nm process at GlobalFoundries, with 1,200 million transistors on a 315 mm² die. The Intel Core i7-3635QM uses the Ivy Bridge architecture, built on a 22 nm process at Intel, with 1,480 million transistors on a 160 mm² die. Intel's smaller process node and larger transistor count pack more complexity into roughly half the die area.

Core configuration is where the two diverge sharply. The AMD Opteron 3365 has 8 physical cores and 8 threads, meaning no simultaneous multithreading. The Intel Core i7-3635QM has 4 physical cores and 8 threads, using Hyper-Threading to double its logical thread count. Despite AMD's 2x core advantage, Intel's per-core efficiency wins every benchmark in the shared suite.

Cache hierarchies also differ. The Opteron 3365 has 384 KB of L1 cache, 4 MB of L2 cache, and 8 MB of shared L3 cache. The i7-3635QM has 64 KB of L1 per core, 256 KB of L2 per core, and 6 MB of shared L3. With four cores, that translates to 256 KB total L1 and 1 MB total L2 for Intel. The Opteron's larger aggregate cache does not overcome Intel's architectural advantages.

Memory support is similar in width: both use dual-channel memory buses. The Opteron 3365 supports DDR3 with a recorded memory bandwidth of 29.9 GB/s. The i7-3635QM also uses a dual-channel bus, though the database does not list its memory bandwidth. Neither chip supports ECC memory, which is notable for the Opteron given its server/workstation market segment.

Clock speeds favor Intel in both base and boost operation. The Opteron 3365 runs at a 2.30 GHz base clock and 3.30 GHz boost clock. The i7-3635QM runs at a 2.40 GHz base clock and 3.40 GHz boost clock. Both chips have locked multipliers, so neither offers user-overclocking headroom.

Thermal design power differs substantially. The Opteron 3365 has a 65 W TDP, while the i7-3635QM has a 45 W TDP. The Intel part delivers better performance with a lower power envelope, a reflection of its more modern 22 nm process versus AMD's 32 nm node.

Socket and platform are entirely different. The Opteron uses AMD Socket AM3+, a desktop/server socket, while the i7-3635QM uses Intel BGA 1224, a soldered mobile package. The Opteron targets the server/workstation segment, while the i7-3635QM is a mobile processor. The Opteron offers PCIe Gen 2 support, while the database records no PCIe generation for the Intel part. Integrated graphics also differ: the Opteron relies on a chipset feature available on certain motherboards, whereas the i7-3635QM includes Intel HD 4000 graphics on-die.

Production status and release timing set them apart historically. The Opteron 3365 is end-of-life, while the i7-3635QM has a recorded release date of August 31, 2012. The Intel part is a mobile processor from the Core i7 generation, while the Opteron is from the Opteron Delhi generation.

The Verdict

The data points to a clear winner for anyone choosing between these two specific processors. The Intel Core i7-3635QM beats the AMD Opteron 3365 in every recorded benchmark, with a consistent 14.5 percent margin across all Cinebench tests. The Intel part achieves this with half the physical cores, a lower TDP, and a smaller die. For workloads represented by Cinebench, which include both single-threaded and multi-threaded rendering tasks, the Intel chip is simply the faster processor.

The AMD Opteron 3365 does have advantages in the database, though none of them translate into benchmark wins. It offers 8 physical cores versus Intel's 4, a larger L3 cache at 8 MB versus 6 MB, and a higher average benchmark score at 1194 versus 1170. Its 65 W TDP is higher than Intel's 45 W, but for a server/workstation part, that may be acceptable in a system designed to handle it. The Opteron's socket AM3+ platform could also be more familiar to server integrators, though the database does not record any compatibility advantages beyond the socket itself.

The realistic choice depends on platform constraints. If the system requires a server/workstation socket with AM3+ and 8 physical cores for non-benchmark workloads, the Opteron 3365 is the only option in this comparison. If the system is mobile and requires a BGA 1224 package, the i7-3635QM is the only choice. But in a pure performance contest based on the recorded benchmarks, the Intel Core i7-3635QM is the decisive winner. The 5-0 sweep with uniform 14.5 percent deltas leaves no ambiguity.

FAQ

Q: Which processor has more physical cores?

A: The AMD Opteron 3365 has 8 physical cores and 8 threads. The Intel Core i7-3635QM has 4 physical cores and 8 threads, using Hyper-Threading to match the thread count.

Q: Which processor wins in multi-core Cinebench R23?

A: The Intel Core i7-3635QM wins with a score of 4057, while the AMD Opteron 3365 scores 3470. That is a 14.5 percent advantage for Intel.

Q: What are the clock speeds of both processors?

A: The AMD Opteron 3365 has a 2.30 GHz base clock and a 3.30 GHz boost clock. The Intel Core i7-3635QM has a 2.40 GHz base clock and a 3.40 GHz boost clock.

Q: Do either of these processors support ECC memory?

A: No. The database records ECC memory support as false for both the AMD Opteron 3365 and the Intel Core i7-3635QM.

Q: Which processor has a lower TDP?

A: The Intel Core i7-3635QM has a 45 W TDP, while the AMD Opteron 3365 has a 65 W TDP. Intel achieves better benchmark scores with a 20 W lower power envelope.

Q: What is the single-core score difference in Cinebench R20?

A: The Intel Core i7-3635QM scores 240, and the AMD Opteron 3365 scores 205. Intel leads by 14.6 percent in that test.

Head-to-Head Benchmarks

The head-to-head results form a remarkably consistent pattern. Every test in the shared suite shows the Intel Core i7-3635QM winning with a delta of roughly 14.5 percent over the AMD Opteron 3365. The margins are nearly identical across different Cinebench versions and workload types, which indicates a stable architectural efficiency gap rather than a test-specific artifact.

Starting with Cinebench R15 multi-core, the Intel part scores 408 against AMD's 349. The 14.5 percent delta is the opening data point in the series. That same margin appears in Cinebench R20 multi-core, where Intel scores 1703 and AMD scores 1457, a 14.4 percent gap. In Cinebench R23 multi-core, Intel scores 4057 versus AMD's 3470, again a 14.5 percent difference. The consistency is striking: three different Cinebench versions, three different score scales, and almost exactly the same relative outcome.

Single-core tests follow the same pattern. In Cinebench R20 single-core, Intel posts 240 against AMD's 205, a 14.6 percent advantage. In Cinebench R23 single-core, Intel scores 572 versus AMD's 489, a 14.5 percent edge. The single-core results are particularly telling because they eliminate the core-count variable. With both processors running a single thread, Intel's Ivy Bridge architecture simply executes more work per clock.

The biggest absolute wins for Intel come in the multi-core tests, simply because the score scales are larger. The 587-point difference in Cinebench R23 multi-core (4057 versus 3470) is the largest raw gap in the dataset. The smallest absolute gap is in Cinebench R20 single-core, where Intel leads by 35 points (240 versus 205). But in percentage terms, every test lands within a narrow band of 14.4 to 14.6 percent.

The database also includes Geekbench results for the Intel part alone: 1790 multi-core and 532 single-core. Without a corresponding Geekbench score for the AMD Opteron, those numbers cannot be used for a head-to-head comparison, but they do provide additional context for the Intel chip's performance profile. The Geekbench multi-core score of 1790 is roughly comparable to the Cinebench R15 multi-core result of 408 in terms of positioning the Intel part as a competent mobile processor.

The win tally is decisive: Intel takes 5 wins, AMD takes 0. There are no tests in the shared suite where the Opteron 3365 comes out ahead, and no test where the margin narrows below 14 percent. For any workload represented by these Cinebench benchmarks, the Intel Core i7-3635QM is the faster processor by a consistent, measurable margin. The AMD Opteron 3365, despite its additional physical cores and larger cache, cannot overcome the per-clock efficiency of Intel's Ivy Bridge design.