Celeron B840 vs Atom Z2560
Celeron B840
Atom Z2560
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 Celeron B840 is positioned at rank 1028 and the Atom Z2560 is on rank 104, so the Atom Z2560 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Celeron B840
Performance Per Dollar Atom Z2560
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Celeron B840 | Atom Z2560 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($15) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) | 🛑 Legacy (Clovertrail (2013) / 32 nm) |
💎 Value Proposition
| Insight | Celeron B840 | Atom Z2560 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($15) | ✅ 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 B840 and Atom Z2560
Celeron B840
The Celeron B840 is manufactured by Intel. It was released in 1 July 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 1.9 GHz, with boost up to 1.9 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 32 nm process technology. Socket: PGA988. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 1,065 points. Launch price was $86.
Atom Z2560
The Atom Z2560 is manufactured by Intel. It was released in 27 February 2013 (12 years ago). It is based on the Clovertrail (2013) architecture. It features 2 cores and 4 threads. Max frequency: 1.6 GHz. L3 cache: 0 kB. L2 cache: 512K (per core). Built on 32 nm process technology. Socket: FC-MB4760. Thermal design power (TDP): 3 Watt. Memory support: DDR2. Passmark benchmark score: 1,056 points. Launch price was $69.
Processing Power
The Celeron B840 packs 2 cores / 2 threads, matching the Atom Z2560's 2 cores. Boost clocks reach 1.9 GHz on the Celeron B840 versus 1.6 GHz on the Atom Z2560 — a 17.1% clock advantage for the Celeron B840. The Celeron B840 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Atom Z2560 uses Clovertrail (2013) (32 nm). In PassMark, the Celeron B840 scores 1,065 against the Atom Z2560's 1,056 — a 0.8% lead for the Celeron B840. L3 cache: 2 MB (total) on the Celeron B840 vs 0 kB on the Atom Z2560.
| Feature | Celeron B840 | Atom Z2560 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 4 |
| Boost Clock | 1.9 GHz+19% | 1.6 GHz |
| Base Clock | 1.9 GHz | — |
| L3 Cache | 2 MB (total) | 0 kB |
| L2 Cache | 256K (per core) | 512K (per core)+100% |
| Process | 32 nm | 32 nm |
| Architecture | Sandy Bridge (2011−2013) | Clovertrail (2013) |
| PassMark | 1,065 | 1,056 |
| Geekbench 6 Single | 450 | — |
| Geekbench 6 Multi | 790 | — |
Memory & Platform
The Celeron B840 uses the PGA988 socket (PCIe 2.0), while the Atom Z2560 uses FC-MB4760 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 1333 on the Celeron B840 versus LPDDR2-1066 on the Atom Z2560 — the Celeron B840 supports 199.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Celeron B840 supports up to 16 of RAM compared to 2 GB — 155.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Celeron B840) vs 0 (Atom Z2560) — the Celeron B840 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: HM65,HM67,QM67 (Celeron B840) and Intel BGA1264 (Atom Z2560).
| Feature | Celeron B840 | Atom Z2560 |
|---|---|---|
| Socket | PGA988 | FC-MB4760 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | 1333+66550% | LPDDR2-1066 |
| Max RAM Capacity | 16 | 2 GB+13107100% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16 | 0 |
Advanced Features
Virtualization: true (Celeron B840) / not specified (Atom Z2560). Both include integrated graphics — Intel HD Graphics (Sandy Bridge) (Celeron B840) and PowerVR SGX544MP2 (Atom Z2560) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron B840 targets Budget. Direct competitor: Celeron B840 rivals Pentium B940.
| Feature | Celeron B840 | Atom Z2560 |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | Intel HD Graphics (Sandy Bridge) | PowerVR SGX544MP2 |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | true | — |
| Target Use | Budget | — |
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