CPU
GPU
Phenom X3 8750
Pentium G645
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. The Phenom X3 8750 is positioned at rank 1043 and the Pentium G645 is on rank 838, so the Pentium G645 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Phenom X3 8750
Performance Per Dollar Pentium G645
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Phenom X3 8750 | Pentium G645 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($20) | ✅ More affordable ($15) |
| Longevity | 🛑 Legacy (Toliman (2008) / 65 nm) | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) |
💎 Value Proposition
| Insight | Phenom X3 8750 | Pentium G645 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+34%) |
| Upfront Cost | ⚠️ Higher cost ($20) | ✅ More affordable ($15) |
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 Phenom X3 8750 and Pentium G645
Phenom X3 8750
The Phenom X3 8750 is manufactured by AMD. It was released in 2009-01-01. It is based on the Toliman (2008) architecture. It features 3 cores and 3 threads. Max frequency: 2.4 GHz. L3 cache: 2 MB (total). L2 cache: 512 kB (per core). Built on 65 nm process technology. Socket: AM2+. Thermal design power (TDP): 95 Watt. Passmark benchmark score: 1,445 points. Launch price was $149.
Pentium G645
The Pentium G645 is manufactured by Intel. It was released in 2 September 2012 (13 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 2.9 GHz, with boost up to 2.9 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 1,450 points. Launch price was $80.
Processing Power
The Phenom X3 8750 packs 3 cores / 3 threads, while the Pentium G645 offers 2 cores / 2 threads — the Phenom X3 8750 has 1 more core. Boost clocks reach 2.4 GHz on the Phenom X3 8750 versus 2.9 GHz on the Pentium G645 — a 18.9% clock advantage for the Pentium G645. The Phenom X3 8750 uses the Toliman (2008) architecture (65 nm), while the Pentium G645 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Phenom X3 8750 scores 1,445 against the Pentium G645's 1,450 — a 0.3% lead for the Pentium G645. L3 cache: 2 MB (total) on the Phenom X3 8750 vs 3 MB (total) on the Pentium G645.
| Feature | Phenom X3 8750 | Pentium G645 |
|---|---|---|
| Cores / Threads | 3 / 3+50% | 2 / 2 |
| Boost Clock | 2.4 GHz | 2.9 GHz+21% |
| Base Clock | — | 2.9 GHz |
| L3 Cache | 2 MB (total) | 3 MB (total)+50% |
| L2 Cache | 512 kB (per core)+100% | 256 kB (per core) |
| Process | 65 nm | 32 nm-51% |
| Architecture | Toliman (2008) | Sandy Bridge (2011−2013) |
| PassMark | 1,445 | 1,450 |
Memory & Platform
The Phenom X3 8750 uses the AM2+ socket (PCIe 2.0), while the Pentium G645 uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Phenom X3 8750 | Pentium G645 |
|---|---|---|
| Socket | AM2+ | LGA1155 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
Value Analysis
The Phenom X3 8750 launched at $195 MSRP, while the Pentium G645 debuted at $80. At current prices ($20 vs $15), the Pentium G645 is $5 cheaper. In terms of value (PassMark points per dollar), the Phenom X3 8750 delivers 72.3 pts/$ vs 96.7 pts/$ for the Pentium G645 — making the Pentium G645 the 28.9% better value option.
| Feature | Phenom X3 8750 | Pentium G645 |
|---|---|---|
| MSRP | $195 | $80-59% |
| Avg Price (30d) | $20 | $15-25% |
| Performance per Dollar | 72.3 | 96.7+34% |
| Release Date | 2008 | 2012 |
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