
Celeron B800 vs Core i7-9700K

Celeron B800

Core i7-9700K
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. The Celeron B800 is positioned at rank #810 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. 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 B800
Performance Per Dollar Core i7-9700K
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Celeron B800 | Core i7-9700K |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($5) | ⚠️ Higher cost ($200) |
| Longevity | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) | ✨ Modern (Coffee Lake-R (2018−2019) / 14 nm) |
💎 Value Proposition
| Insight | Celeron B800 | Core i7-9700K |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+431%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($5) | ⚠️ Higher cost ($200) |
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 B800 and Core i7-9700K

Celeron B800
The Celeron B800 is manufactured by Intel. It was released in 19 June 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 1.5 GHz, with boost up to 1.5 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: 1,910 points. Launch price was $80.

Core i7-9700K
The Core i7-9700K is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Coffee Lake-R (2018−2019) architecture. It features 8 cores and 8 threads. Base frequency is 3.6 GHz, with boost up to 4.9 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 95 Watt. Memory support: DDR4. Passmark benchmark score: 14,397 points. Launch price was $374.
Processing Power
The Celeron B800 packs 2 cores / 2 threads, while the Core i7-9700K offers 8 cores / 8 threads — the Core i7-9700K has 6 more cores. Boost clocks reach 1.5 GHz on the Celeron B800 versus 4.9 GHz on the Core i7-9700K — a 106.3% clock advantage for the Core i7-9700K (base: 1.5 GHz vs 3.6 GHz). The Celeron B800 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Core i7-9700K uses Coffee Lake-R (2018−2019) (14 nm). In PassMark, the Celeron B800 scores 1,910 against the Core i7-9700K's 14,397 — a 153.1% lead for the Core i7-9700K. L3 cache: 2 MB (total) on the Celeron B800 vs 12 MB (total) on the Core i7-9700K.
| Feature | Celeron B800 | Core i7-9700K |
|---|---|---|
| Cores / Threads | 2 / 2 | 8 / 8+300% |
| Boost Clock | 1.5 GHz | 4.9 GHz+227% |
| Base Clock | 1.5 GHz | 3.6 GHz+140% |
| L3 Cache | 2 MB (total) | 12 MB (total)+500% |
| L2 Cache | 256K (per core) | 256K (per core) |
| Process | 32 nm | 14 nm-56% |
| Architecture | Sandy Bridge (2011−2013) | Coffee Lake-R (2018−2019) |
| PassMark | 1,910 | 14,397+654% |
Memory & Platform
The Celeron B800 uses the PGA988 socket (PCIe 2.0), while the Core i7-9700K uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Celeron B800 versus DDR4-2666 on the Core i7-9700K — the Core i7-9700K supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i7-9700K supports up to 128 GB of RAM compared to 16 GB — 155.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: HM65,HM67,QM67,QM77 (Celeron B800) and Intel 300 series (Core i7-9700K).
| Feature | Celeron B800 | Core i7-9700K |
|---|---|---|
| Socket | PGA988 | LGA1151 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | DDR3-1333 | DDR4-2666+33% |
| Max RAM Capacity | 16 GB | 128 GB+700% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16 | 16 |
Advanced Features
Only the Core i7-9700K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x (Celeron B800) vs VT-x, VT-d (Core i7-9700K). Both include integrated graphics — HD Graphics (Sandy Bridge) (Celeron B800) and UHD Graphics 630 (Core i7-9700K) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron B800 targets Budget, Core i7-9700K targets Desktop. Direct competitor: Celeron B800 rivals Pentium 967.
| Feature | Celeron B800 | Core i7-9700K |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | HD Graphics (Sandy Bridge) | UHD Graphics 630 |
| Unlocked | No | Yes |
| AVX-512 | No | No |
| Virtualization | VT-x | VT-x, VT-d |
| Target Use | Budget | Desktop |
Value Analysis
The Celeron B800 launched at $80 MSRP, while the Core i7-9700K debuted at $385. At current prices ($5 vs $200), the Celeron B800 is $195 cheaper. In terms of value (PassMark points per dollar), the Celeron B800 delivers 382.0 pts/$ vs 72.0 pts/$ for the Core i7-9700K — making the Celeron B800 the 136.6% better value option.
| Feature | Celeron B800 | Core i7-9700K |
|---|---|---|
| MSRP | $80-79% | $385 |
| Avg Price (30d) | $5-98% | $200 |
| Performance per Dollar | 382.0+431% | 72.0 |
| Release Date | 2011 | 2018 |
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