Core i9-11900KB vs Xeon E5-4640 v4
Core i9-11900KB
Xeon E5-4640 v4
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.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i9-11900KB
Performance Per Dollar Xeon E5-4640 v4
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i9-11900KB | Xeon E5-4640 v4 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($350) | ⚠️ Higher cost ($2,837) |
| Longevity | ✨ Modern (Tiger Lake-H (2021) / 10 nm SuperFin) | 🛑 Legacy (Broadwell (2015−2019) / 14 nm) |
💎 Value Proposition
| Insight | Core i9-11900KB | Xeon E5-4640 v4 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+715%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($350) | ⚠️ Higher cost ($2,837) |
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 Core i9-11900KB and Xeon E5-4640 v4
Core i9-11900KB
The Core i9-11900KB is manufactured by Intel. It was released in Maio 2021 (4 years ago). It is based on the Tiger Lake-H (2021) architecture. It features 8 cores and 16 threads. Base frequency is 3.3 GHz, with boost up to 4.9 GHz. L3 cache: 24 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm SuperFin process technology. Socket: FCBGA1787. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 22,693 points. Launch price was $539.
Xeon E5-4640 v4
The Xeon E5-4640 v4 is manufactured by Intel. It was released in 20 June 2016 (9 years ago). It is based on the Broadwell (2015−2019) architecture. It features 12 cores and 24 threads. Base frequency is 2.1 GHz, with boost up to 2.6 GHz. L3 cache: 30 MB. L2 cache: 3 MB. Built on 14 nm process technology. Socket: LGA2011. Thermal design power (TDP): 105 Watt. Memory support: DDR4. Passmark benchmark score: 22,559 points. Launch price was $2,837.
Processing Power
The Core i9-11900KB packs 8 cores / 16 threads, while the Xeon E5-4640 v4 offers 12 cores / 24 threads — the Xeon E5-4640 v4 has 4 more cores. Boost clocks reach 4.9 GHz on the Core i9-11900KB versus 2.6 GHz on the Xeon E5-4640 v4 — a 61.3% clock advantage for the Core i9-11900KB (base: 3.3 GHz vs 2.1 GHz). The Core i9-11900KB uses the Tiger Lake-H (2021) architecture (10 nm SuperFin), while the Xeon E5-4640 v4 uses Broadwell (2015−2019) (14 nm). In PassMark, the Core i9-11900KB scores 22,693 against the Xeon E5-4640 v4's 22,559 — a 0.6% lead for the Core i9-11900KB. L3 cache: 24 MB (total) on the Core i9-11900KB vs 30 MB on the Xeon E5-4640 v4.
| Feature | Core i9-11900KB | Xeon E5-4640 v4 |
|---|---|---|
| Cores / Threads | 8 / 16 | 12 / 24+50% |
| Boost Clock | 4.9 GHz+88% | 2.6 GHz |
| Base Clock | 3.3 GHz+57% | 2.1 GHz |
| L3 Cache | 24 MB (total) | 30 MB+25% |
| L2 Cache | 1.25 MB (per core) | 3 MB+140% |
| Process | 10 nm SuperFin-29% | 14 nm |
| Architecture | Tiger Lake-H (2021) | Broadwell (2015−2019) |
| PassMark | 22,693 | 22,559 |
| Cinebench R23 Multi | 12,264 | — |
| Geekbench 6 Multi | 10,645 | — |
Memory & Platform
The Core i9-11900KB uses the FCBGA1787 socket (PCIe 3.0), while the Xeon E5-4640 v4 uses LGA2011 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Core i9-11900KB versus DDR4 2133 MHz on the Xeon E5-4640 v4 — the Xeon E5-4640 v4 supports 200% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i9-11900KB supports up to 128 GB of RAM compared to 1.5 TB — 195.4% more capacity for professional workloads. Memory channels: 2 (Core i9-11900KB) vs 4 (Xeon E5-4640 v4). PCIe lanes: 20 (Core i9-11900KB) vs 40 (Xeon E5-4640 v4) — the Xeon E5-4640 v4 offers 20 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Mobile (Core i9-11900KB) and Intel C612 (Xeon E5-4640 v4).
| Feature | Core i9-11900KB | Xeon E5-4640 v4 |
|---|---|---|
| Socket | FCBGA1787 | LGA2011 |
| PCIe Generation | PCIe 3.0 | PCIe 5.0+67% |
| Max RAM Speed | DDR4-3200 | DDR4 2133 MHz |
| Max RAM Capacity | 128 GB | 1.5 TB+1100% |
| RAM Channels | 2 | 4+100% |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 20 | 40+100% |
Advanced Features
Only the Core i9-11900KB has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Core i9-11900KB supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Core i9-11900KB) vs true (Xeon E5-4640 v4). The Core i9-11900KB includes integrated graphics (Intel UHD Graphics), while the Xeon E5-4640 v4 requires a dedicated GPU. Primary use case: Xeon E5-4640 v4 targets Server.
| Feature | Core i9-11900KB | Xeon E5-4640 v4 |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | Intel UHD Graphics | — |
| Unlocked | Yes | No |
| AVX-512 | Yes | No |
| Virtualization | VT-x, VT-d | true |
| Target Use | — | Server |
Value Analysis
The Core i9-11900KB launched at $539 MSRP, while the Xeon E5-4640 v4 debuted at $2837.
| Feature | Core i9-11900KB | Xeon E5-4640 v4 |
|---|---|---|
| MSRP | $539-81% | $2837 |
| Avg Price (30d) | $350 | — |
| Release Date | 2021 | 2016 |
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