
Xeon E5-4603 vs Atom Z3740

Xeon E5-4603

Atom Z3740
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 Xeon E5-4603 is positioned at rank 670 and the Atom Z3740 is on rank 172, so the Atom Z3740 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Xeon E5-4603
Performance Per Dollar Atom Z3740
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon E5-4603 | Atom Z3740 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($80) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Sandy Bridge-EP (2012) / 32 nm) | 🛑 Legacy (Bay Trail-T (2013−2014) / 22 nm) |
💎 Value Proposition
| Insight | Xeon E5-4603 | Atom Z3740 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($80) | ✅ 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 Xeon E5-4603 and Atom Z3740

Xeon E5-4603
The Xeon E5-4603 is manufactured by Intel. It was released in 14 May 2012 (13 years ago). It is based on the Sandy Bridge-EP (2012) architecture. It features 4 cores and 8 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 10240 kB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA2011. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 3,391 points. Launch price was $712.

Atom Z3740
The Atom Z3740 is manufactured by Intel. It was released in 27 September 2013 (12 years ago). It is based on the Bay Trail-T (2013−2014) architecture. It features 4 cores and 4 threads. Base frequency is 1.33 GHz, with boost up to 1.86 GHz. L3 cache: 0 kB. L2 cache: 512K (per core). Built on 22 nm process technology. Socket: UTFCBGA1380. Thermal design power (TDP): 2 Watt. Memory support: DDR3. Passmark benchmark score: 3,380 points. Launch price was $32.
Processing Power
The Xeon E5-4603 packs 4 cores / 8 threads, matching the Atom Z3740's 4 cores. Boost clocks reach 2 GHz on the Xeon E5-4603 versus 1.86 GHz on the Atom Z3740 — a 7.3% clock advantage for the Xeon E5-4603 (base: 2 GHz vs 1.33 GHz). The Xeon E5-4603 uses the Sandy Bridge-EP (2012) architecture (32 nm), while the Atom Z3740 uses Bay Trail-T (2013−2014) (22 nm). In PassMark, the Xeon E5-4603 scores 3,391 against the Atom Z3740's 3,380 — a 0.3% lead for the Xeon E5-4603. L3 cache: 10240 kB (total) on the Xeon E5-4603 vs 0 kB on the Atom Z3740.
| Feature | Xeon E5-4603 | Atom Z3740 |
|---|---|---|
| Cores / Threads | 4 / 8 | 4 / 4 |
| Boost Clock | 2 GHz+8% | 1.86 GHz |
| Base Clock | 2 GHz+50% | 1.33 GHz |
| L3 Cache | 10240 kB (total) | 0 kB |
| L2 Cache | 256 kB (per core) | 512K (per core)+100% |
| Process | 32 nm | 22 nm-31% |
| Architecture | Sandy Bridge-EP (2012) | Bay Trail-T (2013−2014) |
| PassMark | 3,391 | 3,380 |
Memory & Platform
The Xeon E5-4603 uses the LGA2011 socket (PCIe 2.0), while the Atom Z3740 uses UTFCBGA1380 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Xeon E5-4603 | Atom Z3740 |
|---|---|---|
| Socket | LGA2011 | UTFCBGA1380 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | — | LPDDR3-1066 |
| Max RAM Capacity | — | 4 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 0 |
Advanced Features
The Atom Z3740 includes integrated graphics (Intel HD Graphics (Bay Trail)), while the Xeon E5-4603 requires a dedicated GPU.
| Feature | Xeon E5-4603 | Atom Z3740 |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | Intel HD Graphics (Bay Trail) |
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