Core 2 Extreme X7800 vs Pentium G640T

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 X7800 vs Pentium G640T 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 X7800 vs Pentium G640T: 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 X7800

2007

Why buy it

✅+33.3% larger total L3 cache (4 MB vs 3 MB).
✅Draws 4W instead of 35W, a 31W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (1,138 vs 1,139).

Pentium G640T

2012

Why buy it

✅+0.1% higher PassMark.

Trade-offs

❌Smaller total L3 cache (3 MB vs 4 MB).
❌Launch MSRP is still $64 MSRP, while Core 2 Extreme X7800 mostly shows up through inconsistent older-market listings.
❌775% higher power demand at 35W vs 4W.

Quick Answers

So, is Pentium G640T better than Core 2 Extreme X7800?

It depends on what you want from the system. For gaming, Core 2 Extreme X7800 is ahead with a 0.2% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Pentium G640T pulls ahead with 0.1% better PassMark. Core 2 Extreme X7800 also has the bigger cache pool with 33.3% larger total L3 cache (4 MB vs 3 MB).

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

For streaming, content creation, and heavier multitasking, Pentium G640T is the stronger fit. You are getting 0.1% better PassMark, backed by 2 cores and 2 threads.

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

Pentium G640T is the better buy right now. Pentium G640T comes in at an unclear MSRP at $64 MSRP versus unclear MSRP, and it still gives you 0.1% better PassMark. The compromise is that Core 2 Extreme X7800 is still the better pure gaming CPU with a 0.2% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (17.8 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Pentium G640T makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2012 vs 2007) and more multi-core headroom with 2 cores / 2 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core 2 Extreme X7800 vs Pentium G640T Technical Specifications

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

Core 2 Extreme X7800

The Core 2 Extreme X7800 is manufactured by Intel. It was released in 17 July 2007 (18 years ago). It is based on the Merom XE (2007) architecture. It features 2 cores and 2 threads. Base frequency is 2.6 GHz, with boost up to 2.6 GHz. L3 cache: 4 MB L2 Cache. L2 cache: 4 MB. Built on 65 nm process technology. Socket: PGA478. Thermal design power (TDP): 44 Watt. Passmark benchmark score: 1,138 points. Launch price was $851.

Pentium G640T

The Pentium G640T is manufactured by Intel. It was released in 2007-01-01. It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 2.4 GHz, with boost up to 2.4 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 1,139 points. Launch price was $69.

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Processing Power

Both the Core 2 Extreme X7800 and Pentium G640T share an identical 2-core/2-thread configuration. Boost clocks reach 2.6 GHz on the Core 2 Extreme X7800 versus 2.4 GHz on the Pentium G640T — a 8% clock advantage for the Core 2 Extreme X7800 (base: 2.6 GHz vs 2.4 GHz). The Core 2 Extreme X7800 uses the Merom XE (2007) architecture (65 nm), while the Pentium G640T uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Core 2 Extreme X7800 scores 1,138 against the Pentium G640T's 1,139 — a 0.1% lead for the Pentium G640T. L3 cache: 4 MB L2 Cache on the Core 2 Extreme X7800 vs 3 MB (total) on the Pentium G640T.

Feature	Core 2 Extreme X7800	Pentium G640T
Cores / Threads	2 / 2	2 / 2
Boost Clock	2.6 GHz+8%	2.4 GHz
Base Clock	2.6 GHz+8%	2.4 GHz
L3 Cache	4 MB L2 Cache+33%	3 MB (total)
L2 Cache	4 MB+1500%	256 kB (per core)
Process	65 nm	32 nm-51%
Architecture	Merom XE (2007)	Sandy Bridge (2011−2013)
PassMark	1,138	1,139

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Memory & Platform

The Core 2 Extreme X7800 uses the PGA478 socket (PCIe 1.1), while the Pentium G640T uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard.