Intel Core 2 Extreme QX6800

The Intel Core 2 Extreme QX6800 is a quad-core desktop processor from 2007, built on the 65 nm Kentsfield architecture and designed for the Intel Socket 775 platform. It operates at a base clock of 2.93 GHz with 4 cores and 4 threads, and its benchmark data places it at the 50th percentile among all CPUs, indicating a mid-pack standing in the broader historical performance landscape.

Benchmark Performance

The QX6800’s average benchmark score is recorded as 0, which means the database contains no measured performance results for this specific processor. Consequently, direct numerical comparisons against rivals cannot be derived from the benchmark field, as the nearestRivals list is empty and no deltaPct values are available. The only quantitative performance anchor is the 50th percentile ranking, which suggests that in the aggregate of all CPUs ever tested, the QX6800 sits exactly at the median — half of all processors score higher, and half score lower. This percentile is a relative measure, not an absolute score, but it implies that the QX6800 was a competent performer in its era, though not a top-tier outlier.

Given the lack of benchmark scores, the data cannot confirm specific advantages in single-threaded or multi-threaded workloads relative to named competitors. What the architecture does indicate is that the processor features 4 cores and 4 threads, with a shared 8 MB L2 cache, which was a substantial cache allocation for the period. The 2.93 GHz base clock, combined with the dual-die Kentsfield design (2x 143 mm² die size), suggests that multi-threaded applications capable of using all four cores would benefit from the parallel processing capability. However, without benchmark scores, any claim about exact performance margins would be speculative; the data only supports the qualitative statement that the QX6800 is positioned at the median of all CPUs.

Who Should Consider It

Based strictly on the available data, the QX6800 is a desktop processor with 4 cores and 4 threads, which makes it suitable for workloads that scale across multiple cores. Applications from the creation sphere — such as video encoding, 3D rendering, or batch photo processing — that were optimized for quad-core processors in the late 2000s would likely see tangible benefits from the QX6800’s parallel execution capability. The shared 8 MB L2 cache also aids in reducing memory latency for datasets that fit within that cache, which can benefit certain scientific or analytical tasks.

For gaming, the picture is more nuanced. The 50th percentile ranking implies that the QX6800 is neither a leader nor a laggard in aggregate performance, but games from the 2007 era were often not fully optimized for quad-core CPUs, and many titles relied heavily on single-thread performance. Since the QX6800 has a modest base clock of 2.93 GHz and no boost clock, its single-thread performance would be constrained compared to higher-clocked dual-core rivals of the same generation. Office productivity tasks, such as word processing, spreadsheets, or web browsing, would be adequately served by the 4 cores, but these workloads are typically not CPU-bound, so the QX6800 would not provide a noticeable advantage over less complex processors. The data does not support recommending it for any specific modern workload, as the benchmark score of 0 offers no empirical evidence beyond the percentile ranking.

Power and Thermals

The QX6800 carries a thermal design power (TDP) of 130 watts, which classifies it as a high-power desktop processor for its generation. This TDP figure implies that the processor requires a robust cooling solution — a capable air cooler with a large heatsink and a high-static-pressure fan, or a liquid cooling loop, would be appropriate to maintain stable operation under sustained load. The 130 W TDP is a direct consequence of the dual-die Kentsfield design, where two 143 mm² dies are packaged together, each containing two cores and sharing the 8 MB L2 cache. The 65 nm process node, while advanced for 2007, still produced significant heat under load, and the data indicates that thermal management would be a primary consideration for any system builder. The multiplier is unlocked, which means overclocking is possible, but doing so would increase power draw beyond the 130 W TDP, necessitating an even more substantial cooling solution. The production status is end-of-life, so no new cooling bundles are available, and users must rely on aftermarket coolers compatible with Socket 775.

How It Compares

The nearestRivals list is empty, and no benchmark scores or deltaPct values are provided for any competing processors. Therefore, the data does not permit a direct comparative analysis against specific named CPUs. What can be stated is that the QX6800’s 50th percentile ranking places it exactly in the middle of all CPUs in the database, which means it outperforms roughly half of all processors ever benchmarked and underperforms the other half. In the context of its own era (released April 2007), this suggests it was a mainstream-to-upper-midrange part, but without rival names or scores, no further positional claims are possible. The lack of benchmark results (average score of 0) further limits any comparison, as there is no quantitative basis to rank it against peers like other Core 2 Quad processors or competing AMD Phenom models. The only concrete comparison that can be made is against the entire CPU population, where the percentile serves as the sole metric.

FAQ

Q: What is the release date of the Intel Core 2 Extreme QX6800?

A: The release date is April 8, 2007, according to the provided data.

Q: Does the QX6800 have an unlocked multiplier?

A: Yes, the multiplier is unlocked, which allows for user-controlled overclocking, subject to adequate cooling and motherboard support.

Q: What is the TDP of the QX6800, and what does it imply for cooling?

A: The TDP is 130 watts, which implies that a high-performance cooling solution is necessary to manage heat generation under load, especially if overclocking is attempted.

Q: What memory types does the QX6800 support?

A: The processor supports DDR1, DDR2, and DDR3 memory, with a dual-channel memory bus. ECC memory is not supported.

Q: How many cores and threads does the QX6800 have?

A: It has 4 cores and 4 threads, meaning it does not support simultaneous multithreading (hyper-threading).

Q: What is the process node and die size of the QX6800?

A: The process node is 65 nm, and the die size is 2x 143 mm², reflecting a dual-die design where two separate dies are integrated into one package.

Q: What is the launch MSRP of the QX6800?

A: The launch MSRP is $999.

Platform and Compatibility

The QX6800 uses the Intel Socket 775 interface, which is a well-established socket for Intel desktop processors from the mid-2000s. The architecture is Core 2, with the codename Kentsfield, and it belongs to the Core 2 Extreme (Kentsfield XE) generation. Memory support includes DDR1, DDR2, and DDR3, with a dual-channel memory bus, though the specific memory bandwidth is not provided in the data. The processor does not support ECC memory. For expansion, it offers PCIe Gen 2, which was a contemporary standard at release. Integrated graphics are not part of the processor itself; the data notes that integrated graphics are "on certain motherboards (Chipset feature)," meaning that any display output depends on the motherboard’s chipset, not the CPU. The production status is end-of-life, so the CPU is no longer manufactured, and availability is limited to the used market. The part number is SL9UKSLACP, and the processor was fabricated by Intel with 582 million transistors. The upgrade path from Socket 775 is limited to other processors that fit the same socket, but given the end-of-life status and the age of the platform, the data does not specify any particular upgrade recommendations. The 130 W TDP also requires a motherboard with a compatible power delivery design, as older boards may not support this power draw.

Single-Thread vs Multi-Thread Behavior

The QX6800 has 4 cores and 4 threads, with no boost clock — the base clock is fixed at 2.93 GHz. This configuration means that multi-threaded workloads that can distribute tasks across all four cores will utilize the full processing capability of the chip. The shared 8 MB L2 cache is a significant resource for multi-threaded applications, as it allows all cores to access a large pool of cached data, reducing the need to fetch frequently used data from slower system memory. In contrast, single-threaded performance is determined by the 2.93 GHz clock speed and the architectural efficiency of the Core 2 design. Since there is no boost clock, the processor cannot dynamically increase its frequency for lightly threaded tasks, which means single-thread performance is fixed at the base clock. For workloads that are inherently sequential — such as many older games, certain legacy applications, or single-threaded benchmarks — the QX6800 would rely solely on its base clock and cache architecture. The 50th percentile ranking suggests a balanced overall performance, but the data does not separate single-thread and multi-thread scores. Therefore, the analysis must infer that multi-threaded tasks benefit from the 4 cores and 8 MB cache, while single-threaded tasks are limited by the fixed 2.93 GHz clock. In real-world terms, the QX6800 would excel in parallel workloads like video rendering or scientific simulations that were designed for multi-core processing, but it would lag in single-thread-bound applications compared to higher-clocked processors of its era. The unlocked multiplier offers a potential mitigation for single-thread weakness, as users could increase the clock speed, but the 130 W TDP sets a thermal ceiling that limits the extent of such overclocking without advanced cooling.