Core 2 Extreme X6800 vs Core 2 Extreme X7900

PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

Core 2 Extreme X6800 vs Core 2 Extreme X7900 FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Core 2 Extreme X6800 vs Core 2 Extreme X7900: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Core 2 Extreme X6800

2006

Why buy it

✅+0.3% higher PassMark.

Trade-offs

❌1775% higher power demand at 75W vs 4W.

Core 2 Extreme X7900

2007

Why buy it

✅Draws 4W instead of 75W, a 71W reduction.

Trade-offs

❌Lower PassMark (1,115 vs 1,118).

Quick Answers

So, is Core 2 Extreme X7900 better than Core 2 Extreme X6800?

It depends on what you want from the system. For gaming, Core 2 Extreme X7900 is ahead with a 0.1% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core 2 Extreme X6800 pulls ahead with 0.3% better PassMark.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Core 2 Extreme X6800 is the stronger fit. You are getting 0.3% better PassMark, backed by 2 cores and 2 threads.

Which one is the smarter buy today, not just the cheaper CPU?

Core 2 Extreme X7900 still makes the most sense overall. Core 2 Extreme X7900 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 0.1% average FPS lead across 50 shared CPU game tests in our data.

Which one is more future-proof for 2026 and beyond?

Core 2 Extreme X7900 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2007 vs 2006). That makes it the safer long-term bet.

Core 2 Extreme X6800 vs Core 2 Extreme X7900 Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

Core 2 Extreme X6800

The Core 2 Extreme X6800 is manufactured by Intel. It was released in 27 July 2006 (19 years ago). It is based on the Conroe XE (2006) architecture. It features 2 cores and 2 threads. Base frequency is 2.933 GHz, with boost up to 0.93 GHz. L3 cache: 0 kB. L2 cache: 4 MB (total). Built on 65 nm process technology. Socket: LGA775. Thermal design power (TDP): 75 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,118 points. Launch price was $999.

Core 2 Extreme X7900

The Core 2 Extreme X7900 is manufactured by Intel. It was released in 1 September 2007 (18 years ago). It is based on the Merom (2006−2008) architecture. It features 2 cores and 2 threads. Base frequency is 2.8 GHz, with boost up to 2.8 GHz. L3 cache: 0 kB. L2 cache: 4 MB. Built on 65 nm process technology. Socket: PGA478. Thermal design power (TDP): 44 Watt. Memory support: DDR1. Passmark benchmark score: 1,115 points. Launch price was $851.

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Processing Power

Both the Core 2 Extreme X6800 and Core 2 Extreme X7900 share an identical 2-core/2-thread configuration. Boost clocks reach 0.93 GHz on the Core 2 Extreme X6800 versus 2.8 GHz on the Core 2 Extreme X7900 — a 100.3% clock advantage for the Core 2 Extreme X7900 (base: 2.933 GHz vs 2.8 GHz). The Core 2 Extreme X6800 uses the Conroe XE (2006) architecture (65 nm), while the Core 2 Extreme X7900 uses Merom (2006−2008) (65 nm). In PassMark, the Core 2 Extreme X6800 scores 1,118 against the Core 2 Extreme X7900's 1,115 — a 0.3% lead for the Core 2 Extreme X6800. Both processors carry 0 kB of L3 cache.

Feature	Core 2 Extreme X6800	Core 2 Extreme X7900
Cores / Threads	2 / 2	2 / 2
Boost Clock	0.93 GHz	2.8 GHz+201%
Base Clock	2.933 GHz+5%	2.8 GHz
L3 Cache	0 kB	0 kB
L2 Cache	4 MB (total)	4 MB
Process	65 nm	65 nm
Architecture	Conroe XE (2006)	Merom (2006−2008)
PassMark	1,118	1,115

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Memory & Platform

The Core 2 Extreme X6800 uses the LGA775 socket (PCIe 1.1), while the Core 2 Extreme X7900 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard.

Feature	Core 2 Extreme X6800	Core 2 Extreme X7900
Socket	LGA775	PGA478
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	—	DDR2-667
Max RAM Capacity	—	4 GB
RAM Channels	—	2
ECC Support	—	No
PCIe Lanes	—	0

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Advanced Features

Virtualization: not specified (Core 2 Extreme X6800) / VT-x (Core 2 Extreme X7900). Primary use case: Core 2 Extreme X7900 targets Mobile.