Celeron B840 vs Celeron N2820
Celeron B840
Celeron N2820
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 Celeron N2820 is on rank 259, so the Celeron N2820 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 Celeron N2820
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Celeron B840 | Celeron N2820 |
|---|---|---|
| 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 (Bay Trail-M (2013−2014) / 22 nm) |
💎 Value Proposition
| Insight | Celeron B840 | Celeron N2820 |
|---|---|---|
| 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 Celeron N2820
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.
Celeron N2820
The Celeron N2820 is manufactured by Intel. It was released in 1 December 2013 (12 years ago). It is based on the Bay Trail-M (2013−2014) architecture. It features 2 cores and 2 threads. Base frequency is 2.13 GHz, with boost up to 2.39 GHz. L3 cache: 0 kB. L2 cache: 512K (per core). Built on 22 nm process technology. Socket: FCBGA1170. Thermal design power (TDP): 7.5 Watt. Memory support: DDR3. Passmark benchmark score: 1,061 points. Launch price was $107.
Processing Power
Both the Celeron B840 and Celeron N2820 share an identical 2-core/2-thread configuration. Boost clocks reach 1.9 GHz on the Celeron B840 versus 2.39 GHz on the Celeron N2820 — a 22.8% clock advantage for the Celeron N2820 (base: 1.9 GHz vs 2.13 GHz). The Celeron B840 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Celeron N2820 uses Bay Trail-M (2013−2014) (22 nm). In PassMark, the Celeron B840 scores 1,065 against the Celeron N2820's 1,061 — a 0.4% lead for the Celeron B840. Geekbench 6 single-core — the metric most relevant to gaming — records 450 vs 220, a 68.7% lead for the Celeron B840 that directly translates to higher frame rates. Multi-core Geekbench: 790 vs 400 (65.5% advantage for the Celeron B840). L3 cache: 2 MB (total) on the Celeron B840 vs 0 kB on the Celeron N2820.
| Feature | Celeron B840 | Celeron N2820 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 1.9 GHz | 2.39 GHz+26% |
| Base Clock | 1.9 GHz | 2.13 GHz+12% |
| L3 Cache | 2 MB (total) | 0 kB |
| L2 Cache | 256K (per core) | 512K (per core)+100% |
| Process | 32 nm | 22 nm-31% |
| Architecture | Sandy Bridge (2011−2013) | Bay Trail-M (2013−2014) |
| PassMark | 1,065 | 1,061 |
| Geekbench 6 Single | 450+105% | 220 |
| Geekbench 6 Multi | 790+98% | 400 |
Memory & Platform
The Celeron B840 uses the PGA988 socket (PCIe 2.0), while the Celeron N2820 uses FCBGA1170 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 1333 on the Celeron B840 versus DDR3L-1066 on the Celeron N2820 — the Celeron B840 supports 199.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Celeron B840 supports up to 16 of RAM compared to 8 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Celeron B840) vs 4 (Celeron N2820) — the Celeron B840 offers 12 more lanes for additional GPUs or NVMe drives. Chipset compatibility: HM65,HM67,QM67 (Celeron B840) and SoC (Celeron N2820).
| Feature | Celeron B840 | Celeron N2820 |
|---|---|---|
| Socket | PGA988 | FCBGA1170 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | 1333+44333% | DDR3L-1066 |
| Max RAM Capacity | 16 | 8 GB+52428700% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16+300% | 4 |
Advanced Features
Neither processor supports overclocking. Virtualization support: true (Celeron B840) vs VT-x (Celeron N2820). Both include integrated graphics — Intel HD Graphics (Sandy Bridge) (Celeron B840) and Intel HD Graphics (Bay Trail) (Celeron N2820) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron B840 targets Budget, Celeron N2820 targets Netbook. Direct competitor: Celeron B840 rivals Pentium B940; Celeron N2820 rivals AMD A6-6310.
| Feature | Celeron B840 | Celeron N2820 |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | Intel HD Graphics (Sandy Bridge) | Intel HD Graphics (Bay Trail) |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | true | VT-x |
| Target Use | Budget | Netbook |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Celeron B840 and Celeron N2820
