
Iris Graphics 6100 vs GeForce GT 640M

Iris Graphics 6100
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GeForce GT 640M
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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. 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
Performance Per Dollar GeForce GT 640M
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The GeForce GT 640M is the superior choice for raw performance. It leads with a 0.9% higher G3D Mark score and 100+% more VRAM (2 GB vs 0 MB). This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Iris Graphics 6100.
| Insight | Iris Graphics 6100 | GeForce GT 640M |
|---|---|---|
| Performance | ❌Lower raw frame rates (-0.9%) | ✅Leading raw performance (+0.9%) |
| Longevity | 🛑Obsolete Architecture (2015 / Generation 8.0 (2014−2015)) | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+100+%) |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | — | — |
💎 Value Proposition
While current pricing data is unavailable, the GeForce GT 640M 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 Iris Graphics 6100 and GeForce GT 640M

Iris Graphics 6100
The Iris Graphics 6100 is manufactured by Intel. It was released in January 5 2015. It features the Generation 8.0 architecture. The core clock ranges from 300 MHz to 1000 MHz. It has 384 shading units. The thermal design power (TDP) is 15W. Manufactured using 14 nm process technology. G3D Mark benchmark score: 899 points.

GeForce GT 640M
The GeForce GT 640M is manufactured by NVIDIA. It was released in March 22 2012. It features the Kepler architecture. The core clock ranges from Up to 625 MHz to 645 MHz. It has 384 shading units. The thermal design power (TDP) is 32W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 907 points.
Graphics Performance
The Iris Graphics 6100 scores 899 and the GeForce GT 640M reaches 907 in the G3D Mark benchmark — just a 0.9% difference, making them near-identical in rasterization performance. The Iris Graphics 6100 is built on Generation 8.0 while the GeForce GT 640M uses Kepler, both on 14 nm vs 28 nm. Shader units: 384 (Iris Graphics 6100) vs 384 (GeForce GT 640M). Raw compute: 0.768 TFLOPS (Iris Graphics 6100) vs 0.48 TFLOPS (GeForce GT 640M). Boost clocks: 1000 MHz vs 645 MHz.
| Feature | Iris Graphics 6100 | GeForce GT 640M |
|---|---|---|
| G3D Mark Score | 899 | 907 |
| Architecture | Generation 8.0 | Kepler |
| Process Node | 14 nm | 28 nm |
| Shading Units | 384 | 384 |
| Compute (TFLOPS) | 0.768 TFLOPS+60% | 0.48 TFLOPS |
| Boost Clock | 1000 MHz+55% | 645 MHz |
| ROPs | 6 | 16+167% |
| TMUs | 48+50% | 32 |
Advanced Features (DLSS/FSR)
| Feature | Iris Graphics 6100 | GeForce GT 640M |
|---|---|---|
| Upscaling Tech | FSR 1.0 (Software) | FSR 1.0 (Software) |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | Standard | Standard |
Video Memory (VRAM)
The Iris Graphics 6100 comes with 0 MB of VRAM, while the GeForce GT 640M has 2 GB. The GeForce GT 640M offers 100+% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: System vs 128-bit.
| Feature | Iris Graphics 6100 | GeForce GT 640M |
|---|---|---|
| VRAM Capacity | Shared System RAM | 2 GB |
| Memory Type | Shared | GDDR5 |
| Memory Bandwidth | System | Unknown |
| Bus Width | System | 128-bit |
Display & API Support
DirectX support: 12 (11_1) (Iris Graphics 6100) vs 11.0 (GeForce GT 640M). Vulkan: 1.3 vs 1.1. OpenGL: 4.6 vs 4.5. Maximum simultaneous displays: 3 vs 1.
| Feature | Iris Graphics 6100 | GeForce GT 640M |
|---|---|---|
| DirectX | 12 (11_1)+9% | 11.0 |
| Vulkan | 1.3+18% | 1.1 |
| OpenGL | 4.6+2% | 4.5 |
| Max Displays | 3+200% | 1 |
Media & Encoding
Hardware encoder: QuickSync (Iris Graphics 6100) vs NVENC 1.0 (GeForce GT 640M). Decoder: QuickSync vs PureVideo HD VP5. Supported codecs: H.264,H.265,VP8,VP9,VC-1 (Iris Graphics 6100) vs MPEG-2,H.264,VC-1,MPEG-4 ASP (GeForce GT 640M).
| Feature | Iris Graphics 6100 | GeForce GT 640M |
|---|---|---|
| Encoder | QuickSync | NVENC 1.0 |
| Decoder | QuickSync | PureVideo HD VP5 |
| Codecs | H.264,H.265,VP8,VP9,VC-1 | MPEG-2,H.264,VC-1,MPEG-4 ASP |
Power & Dimensions
The Iris Graphics 6100 draws 15W versus the GeForce GT 640M's 32W — a 72.3% difference. The Iris Graphics 6100 is more power-efficient. Recommended PSU: 1W (Iris Graphics 6100) vs 350W (GeForce GT 640M). Power connectors: Integrated vs PCIe-powered. Card length: 0mm vs 0mm, occupying 0 vs 0 slots. Typical load temperature: 85 vs 70°C.
| Feature | Iris Graphics 6100 | GeForce GT 640M |
|---|---|---|
| TDP | 15W-53% | 32W |
| Recommended PSU | 1W-100% | 350W |
| Power Connector | Integrated | PCIe-powered |
| Length | 0mm | 0mm |
| Height | 0mm | 0mm |
| Slots | 0 | 0 |
| Temp (Load) | 85 | 70°C-18% |
| Perf/Watt | 59.9+112% | 28.3 |
Value Analysis
The Iris Graphics 6100 costs 100+% less ($50 savings) at current market prices. Performance per dollar (G3D Mark / price): Infinity (Iris Graphics 6100) vs 18.1 (GeForce GT 640M) — the Iris Graphics 6100 offers Infinity% better value. The Iris Graphics 6100 is the newer GPU (2015 vs 2012).
| Feature | Iris Graphics 6100 | GeForce GT 640M |
|---|---|---|
| MSRP | $0 | — |
| Avg Price (30d) | $0-100% | $50 |
| Performance per Dollar | Infinity | 18.1 |
| Codename | Broadwell GT3 | GK107 |
| Release | January 5 2015 | March 22 2012 |
| Ranking | #913 | #909 |
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