
GeForce GTX 580M SLI
Popular choices:

Iris Plus Graphics 655
Popular choices:
Performance Spectrum - GPU
About G3D Mark
G3D Mark is a standard benchmark that measures graphics performance in real-world gaming scenarios. It simplifies comparing cards from different brands, where higher scores directly correlate with better fps and smoother gaming experiences.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (G3D Mark) per dollar. The GeForce GTX 580M SLI is positioned at rank #229 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 GeForce GTX 580M SLI
Performance Per Dollar
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The Iris Plus Graphics 655 is significantly newer (2018 vs 2011). The Iris Plus Graphics 655 likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The GeForce GTX 580M SLI lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The GeForce GTX 580M SLI is the superior choice for raw performance. It leads with a 2.4% higher G3D Mark score and 100+% more VRAM (512 MB vs 0 MB). This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Iris Plus Graphics 655.
| Insight | GeForce GTX 580M SLI | Iris Plus Graphics 655 |
|---|---|---|
| Performance | ✅Leading raw performance (+2.4%) | ❌Lower raw frame rates (-2.4%) |
| Longevity | 🛑Obsolete Architecture (2011 / Fermi (2010−2014)) | 🛑Obsolete Architecture (2018 / Generation 9.5 (2016−2020)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+100+%) | ❌ Less VRAM capacity |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | — | — |
💎 Value Proposition
While current pricing data is unavailable, the GeForce GTX 580M SLI remains the clear technical winner. Check real-time availability to determine if the performance gap justifies the market price.
Performance Check
Real-world benchmarks and performance projections based on comprehensive hardware analysis and comparative metrics. Values represent expected performance on High/Ultra settings at 1080p, 1440p, and 4K. Modeled using a Ryzen 7 7800X3D reference profile to minimize specific CPU bottlenecks.
Note: Performance behavior can vary per game. Specific architectures may perform better or worse depending on game engine optimizations and API implementation.
Technical Specifications
Side-by-side comparison of GeForce GTX 580M SLI and Iris Plus Graphics 655

GeForce GTX 580M SLI
The GeForce GTX 580M SLI is manufactured by NVIDIA. It was released in January 6 2011. It features the Fermi architecture. The core clock speed is 620 MHz. It has 768 shading units. The thermal design power (TDP) is 100W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 1,771 points.

Iris Plus Graphics 655
The Iris Plus Graphics 655 is manufactured by Intel. It was released in April 3 2018. It features the Generation 9.5 architecture. The core clock ranges from 300 MHz to 1050 MHz. It has 384 shading units. The thermal design power (TDP) is 15W. Manufactured using 14 nm+++ process technology. G3D Mark benchmark score: 1,729 points.
Graphics Performance
The GeForce GTX 580M SLI scores 1,771 and the Iris Plus Graphics 655 reaches 1,729 in the G3D Mark benchmark — just a 2.4% difference, making them near-identical in rasterization performance. The GeForce GTX 580M SLI is built on Fermi while the Iris Plus Graphics 655 uses Generation 9.5, both on 40 nm vs 14 nm+++. Shader units: 768 (GeForce GTX 580M SLI) vs 384 (Iris Plus Graphics 655).
| Feature | GeForce GTX 580M SLI | Iris Plus Graphics 655 |
|---|---|---|
| G3D Mark Score | 1,771+2% | 1,729 |
| Architecture | Fermi | Generation 9.5 |
| Process Node | 40 nm | 14 nm+++ |
| Shading Units | 768+100% | 384 |
Advanced Features (DLSS/FSR)
| Feature | GeForce GTX 580M SLI | Iris Plus Graphics 655 |
|---|---|---|
| Upscaling Tech | FSR 2.1 (Compatible) | FSR 1.0 (Software) |
| Frame Generation | FSR 3 (Compatible) | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | Standard | Standard |
Video Memory (VRAM)
The GeForce GTX 580M SLI comes with 512 MB of VRAM, while the Iris Plus Graphics 655 has 0 MB. The GeForce GTX 580M SLI offers 100+% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs System.
| Feature | GeForce GTX 580M SLI | Iris Plus Graphics 655 |
|---|---|---|
| VRAM Capacity | 0.5 GB | Shared System RAM |
| Memory Type | GDDR5 | Shared |
| Memory Bandwidth | Unknown | System |
| Bus Width | 128-bit | System |
Display & API Support
DirectX support: 12 (11_0) (GeForce GTX 580M SLI) vs 12 (12_1) (Iris Plus Graphics 655). Vulkan: 1.2 vs 1.2. OpenGL: 4.0 vs 4.6. Maximum simultaneous displays: 2 vs 3.
| Feature | GeForce GTX 580M SLI | Iris Plus Graphics 655 |
|---|---|---|
| DirectX | 12 (11_0) | 12 (12_1) |
| Vulkan | 1.2 | 1.2 |
| OpenGL | 4.0 | 4.6+15% |
| Max Displays | 2 | 3+50% |
Media & Encoding
Hardware encoder: PureVideo HD VP4 (GeForce GTX 580M SLI) vs QuickSync (Iris Plus Graphics 655). Decoder: PureVideo HD VP4 vs QuickSync. Supported codecs: H.264,VC-1,MPEG-2,MPEG-4 ASP (GeForce GTX 580M SLI) vs H.264,H.265,VP9 (Iris Plus Graphics 655).
| Feature | GeForce GTX 580M SLI | Iris Plus Graphics 655 |
|---|---|---|
| Encoder | PureVideo HD VP4 | QuickSync |
| Decoder | PureVideo HD VP4 | QuickSync |
| Codecs | H.264,VC-1,MPEG-2,MPEG-4 ASP | H.264,H.265,VP9 |
Power & Dimensions
The GeForce GTX 580M SLI draws 100W versus the Iris Plus Graphics 655's 15W — a 147.8% difference. The Iris Plus Graphics 655 is more power-efficient. Recommended PSU: 350W (GeForce GTX 580M SLI) vs 1W (Iris Plus Graphics 655). Power connectors: 1x 6-pin vs Integrated. Typical load temperature: 90°C vs 85.
| Feature | GeForce GTX 580M SLI | Iris Plus Graphics 655 |
|---|---|---|
| TDP | 100W | 15W-85% |
| Recommended PSU | 350W | 1W-100% |
| Power Connector | 1x 6-pin | Integrated |
| Length | — | 0mm |
| Height | — | 0mm |
| Slots | 0 | 0 |
| Temp (Load) | 90°C | 85-6% |
| Perf/Watt | 17.7 | 115.3+551% |
Value Analysis
The Iris Plus Graphics 655 is the newer GPU (2018 vs 2011).
| Feature | GeForce GTX 580M SLI | Iris Plus Graphics 655 |
|---|---|---|
| MSRP | — | $0 |
| Avg Price (30d) | — | $0 |
| Codename | N12E-GTX2 | Coffee Lake GT3e |
| Release | January 6 2011 | April 3 2018 |
| Ranking | #509 | #723 |
Top Performing GPUs
The most powerful gpus ranked by G3D Mark benchmark scores.

















