
Celeron G5900 vs Core 2 Duo T7800

Celeron G5900

Core 2 Duo T7800
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. 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 Celeron G5900
Performance Per Dollar Core 2 Duo T7800
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Celeron G5900 | Core 2 Duo T7800 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($42) | ✅ More affordable ($0) |
| Longevity | ✨ Modern (Comet Lake (2020−2025) / 14 nm) | 🛑 Legacy (Merom (2006−2008) / 65 nm) |
💎 Value Proposition
| Insight | Celeron G5900 | Core 2 Duo T7800 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($42) | ✅ More affordable ($0) |
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 Celeron G5900 and Core 2 Duo T7800

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.

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.
Processing Power
Both the Celeron G5900 and Core 2 Duo T7800 share an identical 2-core/2-thread configuration. Boost clocks reach 3.4 GHz on the Celeron G5900 versus 2.6 GHz on the Core 2 Duo T7800 — a 26.7% clock advantage for the Celeron G5900 (base: 3.4 GHz vs 2.6 GHz). The Celeron G5900 uses the Comet Lake (2020−2025) architecture (14 nm), while the Core 2 Duo T7800 uses Merom (2006−2008) (65 nm). In PassMark, the Celeron G5900 scores 2,682 against the Core 2 Duo T7800's 2,663 — a 0.7% lead for the Celeron G5900. L3 cache: 2 MB (total) on the Celeron G5900 vs 0 kB on the Core 2 Duo T7800.
| Feature | Celeron G5900 | Core 2 Duo T7800 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 3.4 GHz+31% | 2.6 GHz |
| Base Clock | 3.4 GHz+31% | 2.6 GHz |
| L3 Cache | 2 MB (total) | 0 kB |
| L2 Cache | 256K (per core) | 4 MB+1500% |
| Process | 14 nm-78% | 65 nm |
| Architecture | Comet Lake (2020−2025) | Merom (2006−2008) |
| PassMark | 2,682 | 2,663 |
| Geekbench 6 Single | 850 | — |
| Geekbench 6 Multi | 1,600 | — |
Memory & Platform
The Celeron G5900 uses the LGA1200 socket (PCIe 3.0), while the Core 2 Duo T7800 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Celeron G5900 versus DDR2-667 on the Core 2 Duo T7800 — 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: H410,B460,H470,Z490,H510,B560,H570,Z590 (Celeron G5900) and GM965,PM965 (Core 2 Duo T7800).
| Feature | Celeron G5900 | Core 2 Duo T7800 |
|---|---|---|
| Socket | LGA1200 | PGA478 |
| PCIe Generation | PCIe 3.0+173% | PCIe 1.1 |
| Max RAM Speed | DDR4-2666+100% | DDR2-667 |
| 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: Celeron G5900 targets Budget, Core 2 Duo T7800 targets Budget. Direct competitor: Celeron G5900 rivals Pentium Gold G6400; Core 2 Duo T7800 rivals Athlon Silver 3050U.
| Feature | Celeron G5900 | Core 2 Duo T7800 |
|---|---|---|
| Integrated GPU | Yes | No |
| 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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