
Core 2 Duo T7800 vs Celeron G5900

Core 2 Duo T7800

Celeron G5900
Performance Spectrum - CPU
About PassMark
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.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. The Core 2 Duo T7800 is positioned at rank #156 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core 2 Duo T7800
Performance Per Dollar Celeron G5900
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core 2 Duo T7800 | Celeron G5900 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($42) |
| Longevity | 🛑 Legacy (Merom (2006−2008) / 65 nm) | ✨ Modern (Comet Lake (2020−2025) / 14 nm) |
💎 Value Proposition
| Insight | Core 2 Duo T7800 | Celeron G5900 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($42) |
Performance Check
To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.
Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.
Technical Specifications
Side-by-side comparison of Core 2 Duo T7800 and Celeron G5900

Core 2 Duo T7800
The Core 2 Duo T7800 is manufactured by Intel. It was released in 18 August 2007 (18 years ago). It is based on the Merom (2006−2008) architecture. It features 2 cores and 2 threads. Base frequency is 2.6 GHz, with boost up to 2.6 GHz. L3 cache: 0 kB. L2 cache: 4 MB. Built on 65 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 2,663 points. Launch price was $515.

Celeron G5900
The Celeron G5900 is manufactured by Intel. It was released in 2007-01-01. It is based on the Comet Lake (2020−2025) architecture. It features 2 cores and 2 threads. Base frequency is 3.4 GHz, with boost up to 3.4 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 58 Watt. Memory support: DDR4-2666. Passmark benchmark score: 2,682 points. Launch price was $69.
Processing Power
Both the Core 2 Duo T7800 and Celeron G5900 share an identical 2-core/2-thread configuration. Boost clocks reach 2.6 GHz on the Core 2 Duo T7800 versus 3.4 GHz on the Celeron G5900 — a 26.7% clock advantage for the Celeron G5900 (base: 2.6 GHz vs 3.4 GHz). The Core 2 Duo T7800 uses the Merom (2006−2008) architecture (65 nm), while the Celeron G5900 uses Comet Lake (2020−2025) (14 nm). In PassMark, the Core 2 Duo T7800 scores 2,663 against the Celeron G5900's 2,682 — a 0.7% lead for the Celeron G5900. L3 cache: 0 kB on the Core 2 Duo T7800 vs 2 MB (total) on the Celeron G5900.
| Feature | Core 2 Duo T7800 | Celeron G5900 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 2.6 GHz | 3.4 GHz+31% |
| Base Clock | 2.6 GHz | 3.4 GHz+31% |
| L3 Cache | 0 kB | 2 MB (total) |
| L2 Cache | 4 MB+1500% | 256K (per core) |
| Process | 65 nm | 14 nm-78% |
| Architecture | Merom (2006−2008) | Comet Lake (2020−2025) |
| PassMark | 2,663 | 2,682 |
| Geekbench 6 Single | — | 850 |
| Geekbench 6 Multi | — | 1,600 |
Memory & Platform
The Core 2 Duo T7800 uses the PGA478 socket (PCIe 1.1), while the Celeron G5900 uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-667 on the Core 2 Duo T7800 versus DDR4-2666 on the Celeron G5900 — the Celeron G5900 supports 66.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both feature 2-channel memory with ECC support. Chipset compatibility: GM965,PM965 (Core 2 Duo T7800) and H410,B460,H470,Z490,H510,B560,H570,Z590 (Celeron G5900).
| Feature | Core 2 Duo T7800 | Celeron G5900 |
|---|---|---|
| Socket | PGA478 | LGA1200 |
| PCIe Generation | PCIe 1.1 | PCIe 3.0+173% |
| Max RAM Speed | DDR2-667 | DDR4-2666+100% |
| Max RAM Capacity | — | 128 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | — | 16 |
Advanced Features
Neither processor supports overclocking. Both support VT-x virtualization. The Celeron G5900 includes integrated graphics (UHD Graphics 610), while the Core 2 Duo T7800 requires a dedicated GPU. Primary use case: Core 2 Duo T7800 targets Budget, Celeron G5900 targets Budget. Direct competitor: Core 2 Duo T7800 rivals Athlon Silver 3050U; Celeron G5900 rivals Pentium Gold G6400.
| Feature | Core 2 Duo T7800 | Celeron G5900 |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | UHD Graphics 610 |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | VT-x | VT-x |
| Target Use | Budget | Budget |
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