Athlon X4 840 vs A10 PRO-7800B
Athlon X4 840
A10 PRO-7800B
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 Athlon X4 840 is positioned at rank 563 and the A10 PRO-7800B is on rank 320, so the A10 PRO-7800B offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Athlon X4 840
Performance Per Dollar A10 PRO-7800B
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon X4 840 | A10 PRO-7800B |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($25) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Kaveri (2014−2015) / 28 nm) | 🛑 Legacy (Kaveri (2014−2015) / 28 nm) |
💎 Value Proposition
| Insight | Athlon X4 840 | A10 PRO-7800B |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($25) | ✅ 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 Athlon X4 840 and A10 PRO-7800B
Athlon X4 840
The Athlon X4 840 is manufactured by AMD. It was released in 2009-01-01. It is based on the Kaveri (2014−2015) architecture. It features 4 cores and 4 threads. Base frequency is 3.1 GHz, with boost up to 3.8 GHz. L2 cache: 4 MB. Built on 28 nm process technology. Socket: FM2+. Thermal design power (TDP): 65 watt. Memory support: DDR3. Passmark benchmark score: 3,331 points. Launch price was $149.
A10 PRO-7800B
The A10 PRO-7800B is manufactured by AMD. It was released in 31 July 2014 (11 years ago). It is based on the Kaveri (2014−2015) architecture. It features 4 cores and 4 threads. Base frequency is 3.5 GHz, with boost up to 3.9 GHz. L2 cache: 4096 kB. Built on 28 nm process technology. Socket: FM2+. Thermal design power (TDP): 65 Watt. Memory support: DDR3-2133. Passmark benchmark score: 3,317 points. Launch price was $69.
Processing Power
Both the Athlon X4 840 and A10 PRO-7800B share an identical 4-core/4-thread configuration. Boost clocks reach 3.8 GHz on the Athlon X4 840 versus 3.9 GHz on the A10 PRO-7800B — a 2.6% clock advantage for the A10 PRO-7800B (base: 3.1 GHz vs 3.5 GHz). Both are built on the Kaveri (2014−2015) architecture using a 28 nm process. In PassMark, the Athlon X4 840 scores 3,331 against the A10 PRO-7800B's 3,317 — a 0.4% lead for the Athlon X4 840.
| Feature | Athlon X4 840 | A10 PRO-7800B |
|---|---|---|
| Cores / Threads | 4 / 4 | 4 / 4 |
| Boost Clock | 3.8 GHz | 3.9 GHz+3% |
| Base Clock | 3.1 GHz | 3.5 GHz+13% |
| L2 Cache | 4 MB | 4096 kB |
| Process | 28 nm | 28 nm |
| Architecture | Kaveri (2014−2015) | Kaveri (2014−2015) |
| PassMark | 3,331 | 3,317 |
| Geekbench 6 Single | — | 446 |
Memory & Platform
Both processors use the FM2+ socket with PCIe 3.0. Both support up to DDR3-2133 memory speed. The Athlon X4 840 supports up to 64 GB of RAM compared to 32 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: AMD FM2+ (Athlon X4 840) and A55,A58,A68H,A75,A78,A88X (A10 PRO-7800B).
| Feature | Athlon X4 840 | A10 PRO-7800B |
|---|---|---|
| Socket | FM2+ | FM2+ |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | DDR3-2133 | DDR3-2133 |
| Max RAM Capacity | 64 GB+100% | 32 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16 | 16 |
Advanced Features
Virtualization: not specified (Athlon X4 840) / AMD-V (A10 PRO-7800B). The A10 PRO-7800B includes integrated graphics (Radeon R7), while the Athlon X4 840 requires a dedicated GPU. Primary use case: A10 PRO-7800B targets Business Desktop. Direct competitor: A10 PRO-7800B rivals Core i3-4160.
| Feature | Athlon X4 840 | A10 PRO-7800B |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | Radeon R7 |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | AMD-V |
| Target Use | — | Business Desktop |
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