Intel Core 2 Quad Q9650 vs Intel Xeon X5460 Comparison

Head-to-Head Benchmarks

The benchmark data presents a consistent picture: the Intel Xeon X5460 outperforms the Intel Core 2 Quad Q9650 across every recorded test. In Cinebench R15 multicore, the Xeon scores 220 against the Core 2 Quad’s 215, a 2.3% advantage. That gap widens slightly in Cinebench R20 multicore, where the Xeon records 920 versus 899, again a 2.3% difference. The single-core tests follow the same pattern: in Cinebench R20 single-core, the Xeon posts 129 while the Core 2 Quad manages 126, a 2.4% edge. Cinebench R23 multicore shows the Xeon at 2191 and the Core 2 Quad at 2141, a 2.3% lead, and in Cinebench R23 single-core, the Xeon’s 309 beats the 302 of the Core 2 Quad by 2.3%.

All five head-to-head benchmarks favor the Xeon X5460. There are no wins for the Core 2 Quad Q9650 in any test. The margins are narrow, ranging from 2.3% to 2.4%, but they are consistent across both multicore and single-core workloads. This uniformity suggests a fundamental clock-speed advantage rather than a workload-specific quirk. The Xeon’s base clock is 3.17 GHz, while the Core 2 Quad runs at 3.00 GHz, and that 0.17 GHz difference appears to translate directly into the observed performance gap.

Looking at the average benchmark score, the Xeon X5460 sits at 754, while the Core 2 Quad Q9650 averages 737. That is a 2.3% difference in overall performance, matching the head-to-head deltas. The percentile versus all CPUs is identical for both at 20, meaning they occupy the same performance tier in the database. Their nearest rivals confirm this proximity: the Xeon’s closest competitor, the Intel Core i5-3230M, scores 754 with a delta of -0.1%, while the Core 2 Quad’s nearest rival, the Intel Xeon L5530, scores 737 with a delta of -0.1%. Both processors are effectively at the same level as a mid-range mobile Core i5 from a few generations later.

Where Each One Wins

The Xeon X5460 wins in every benchmark category recorded. For multicore rendering tasks, such as Cinebench R15, R20, and R23 multicore tests, the Xeon consistently leads by 2.3%. This makes sense for a server/workstation part that may be tasked with sustained multi-threaded workloads. The advantage in single-core tests is equally present, with deltas of 2.4% in R20 single-core and 2.3% in R23 single-core. This means the Xeon is not just better at parallel tasks; it also edges ahead in lightly threaded applications.

The Core 2 Quad Q9650 does not win any test. There is no scenario in the recorded data where it takes the lead. However, its performance is very close, within 2.4% in all cases. For practical purposes, a user moving from the Q9650 to the X5460 would notice a small but measurable improvement in Cinebench scores. The Q9650’s lower TDP of 95 watts versus the Xeon’s 120 watts might make it a more attractive choice for systems where power consumption or cooling is a constraint, but the benchmark data does not include any power efficiency metrics.

The use-case split is clear: for any Cinebench workload, the Xeon X5460 is the better performer. The Core 2 Quad, while not winning, remains a capable desktop processor with a lower thermal envelope. The Xeon’s market segment is Server/Workstation, which aligns with its slightly higher performance and support for ECC memory. The Core 2 Quad is a Desktop part with no ECC support, so the Xeon’s wins extend to server-specific features, though the benchmark scores themselves do not measure those capabilities.

FAQ

Q: Which processor has a higher base clock speed?

A: The Intel Xeon X5460 has a base clock of 3.17 GHz, while the Intel Core 2 Quad Q9650 has a base clock of 3.00 GHz. This 0.17 GHz difference contributes to the Xeon’s consistent 2.3% lead in benchmarks.

Q: What is the average benchmark score for each CPU?

A: The Xeon X5460 has an average benchmark score of 754, while the Core 2 Quad Q9650 has an average score of 737. The Xeon’s score is higher by 2.3%.

Q: Are the two processors on the same socket?

A: No. The Xeon X5460 uses Intel Socket 771, while the Core 2 Quad Q9650 uses Intel Socket 775. They are not socket-compatible with each other.

Q: Which CPU supports ECC memory?

A: The Xeon X5460 supports ECC memory (true), while the Core 2 Quad Q9650 does not (false). This makes the Xeon more suitable for error-correcting memory in server environments.

Q: Do both processors have the same number of cores and threads?

A: Yes. Both the Xeon X5460 and the Core 2 Quad Q9650 have 4 cores and 4 threads. They also share the same L1 cache of 64 KB per core and L2 cache of 6 MB per die.

Q: What is the performance difference in Cinebench R23 multicore?

A: The Xeon X5460 scores 2191, while the Core 2 Quad Q9650 scores 2141. The Xeon leads by 2.3% in this test.

Specification Differences

The two CPUs differ in several key specifications. The Xeon X5460 has a base clock of 3.17 GHz, while the Core 2 Quad Q9650 runs at 3.00 GHz. The Xeon has a TDP of 120 watts, whereas the Core 2 Quad has a TDP of 95 watts. They use different sockets: the Xeon is on Intel Socket 771, and the Core 2 Quad is on Intel Socket 775.

Memory support also differs. The Xeon supports DDR2 and DDR3, with the note that it depends on the motherboard. The Core 2 Quad supports DDR1, DDR2, and DDR3. Both are dual-channel. ECC memory support is present on the Xeon but absent on the Core 2 Quad. The Xeon’s market segment is Server/Workstation, while the Core 2 Quad is Desktop. The Xeon has a launch MSRP of $1172; the Core 2 Quad has no recorded launch MSRP. The Core 2 Quad lists integrated graphics as "On certain motherboards (Chipset feature)", while the Xeon has no integrated graphics. The production status for both is End-of-life. The release dates differ: the Xeon was released in 2007, and the Core 2 Quad was released in 2008. Their part numbers are SLANPSLBBA for the Xeon and SLB8W for the Core 2 Quad.

Architecture Differences

Architecturally, both chips are built on the Core 2 architecture and use the same 45 nm process node from Intel. They both have 820 million transistors and a die size of 2x 107 mm². The codenames differ: the Xeon is Harpertown, while the Core 2 Quad is Yorkfield. The generation labels reflect this: the Xeon is listed as "Xeon (Harpertown)", and the Core 2 Quad is "Core 2 Quad (Yorkfield)".

Cache configuration is identical: 64 KB L1 per core and 6 MB L2 per die, with no L3 cache. Both support PCIe Gen 2. The Xeon is designed for server/workstation platforms, which explains its ECC memory support and higher TDP. The Core 2 Quad targets desktop systems, with a lower TDP and no ECC. The Core 2 Quad’s integrated graphics capability is a chipset feature on certain motherboards, whereas the Xeon has no integrated graphics. The memory support for the Xeon is more restrictive (DDR2 and DDR3 depending on motherboard), while the Core 2 Quad adds DDR1 support. These architectural differences reflect their intended markets: the Xeon prioritizes reliability and server features, while the Core 2 Quad focuses on desktop compatibility and lower power draw.

The Verdict

The benchmark data is unambiguous: the Intel Xeon X5460 is the faster processor in every recorded test. It wins all five head-to-head benchmarks with margins of 2.3% to 2.4%. Its higher base clock of 3.17 GHz gives it a consistent edge over the Core 2 Quad Q9650’s 3.00 GHz. For users seeking maximum Cinebench performance from this generation, the Xeon X5460 is the clear choice.

The Core 2 Quad Q9650, while not winning any tests, is not far behind. Its average benchmark score of 737 is only 2.3% lower than the Xeon’s 754. It draws less power (95 watts versus 120 watts) and supports a wider range of memory types including DDR1. For desktop users on Socket 775 with existing motherboards, the Q9650 remains a viable option, especially if the lower TDP is a priority.

The Xeon X5460’s advantages extend beyond raw performance. It supports ECC memory, which is critical for server and workstation reliability. Its launch MSRP of $1172 reflects its enterprise positioning, though the Core 2 Quad has no recorded launch price. The Xeon’s socket 771 is server-oriented, so it requires a compatible motherboard. Meanwhile, the Core 2 Quad’s socket 775 is common in desktop builds.

Who should pick which? The data suggests that anyone running server or workstation workloads, particularly those requiring ECC memory, should choose the Xeon X5460. It offers slightly better performance across all tested benchmarks and includes error-correcting memory support. For desktop users on a Socket 775 platform who prioritize lower power consumption and do not need ECC, the Core 2 Quad Q9650 is a reasonable alternative, though it will trail the Xeon by a small margin in every Cinebench test. The Xeon’s wins are small but consistent, making it the superior processor in the database’s measurements. The Core 2 Quad’s only advantages are its lower TDP and broader memory compatibility, neither of which appears in the benchmark scores. Ultimately, the recorded data points to the Xeon X5460 as the faster, more feature-rich part for its intended market.