Iris Xe Graphics MAX vs GeForce GT 645
Iris Xe Graphics MAX
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GeForce GT 645
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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 Iris Xe Graphics MAX
Performance Per Dollar GeForce GT 645
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The Iris Xe Graphics MAX is significantly newer (2020 vs 2012). The Iris Xe Graphics MAX likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The GeForce GT 645 lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The GeForce GT 645 is the superior choice for raw performance. It leads with a 1.7% 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 Xe Graphics MAX.
| Insight | Iris Xe Graphics MAX | GeForce GT 645 |
|---|---|---|
| Performance | ❌Lower raw frame rates (-1.7%) | ✅Leading raw performance (+1.7%) |
| Longevity | Generation 12.1 (2020−2021) (10nm) | 🛑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 | — | 📏 Compact / SFF Friendly |
💎 Value Proposition
The GeForce GT 645 offers a compelling cost-to-performance ratio. Priced at $15 versus $40 for the Iris Xe Graphics MAX, it costs 63% less. While it maintains basic entry-level capabilities, this results in a 171.3% higher cost efficiency score.
| Insight | Iris Xe Graphics MAX | GeForce GT 645 |
|---|---|---|
| Cost Efficiency | ❌Lower cost efficiency | ✅Better overall value (+171.3%) |
| Upfront Cost | ⚠️Higher upfront cost ($40) | ✅More affordable ($15) |
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 Xe Graphics MAX and GeForce GT 645
Iris Xe Graphics MAX
The Iris Xe Graphics MAX is manufactured by Intel. It was released in October 31 2020. It features the Generation 12.1 architecture. The boost clock speed is 1650 MHz. It has 768 shading units. The thermal design power (TDP) is 25W. Manufactured using 10 nm process technology. G3D Mark benchmark score: 1,972 points.
GeForce GT 645
The GeForce GT 645 is manufactured by NVIDIA. It was released in October 1 2012. It features the Kepler architecture. The core clock speed is Up to 710 MHz. It has 384 shading units. The thermal design power (TDP) is 32W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 2,006 points.
Graphics Performance
The Iris Xe Graphics MAX scores 1,972 and the GeForce GT 645 reaches 2,006 in the G3D Mark benchmark — just a 1.7% difference, making them near-identical in rasterization performance. The Iris Xe Graphics MAX is built on Generation 12.1 while the GeForce GT 645 uses Kepler, both on 10 nm vs 28 nm. Shader units: 768 (Iris Xe Graphics MAX) vs 384 (GeForce GT 645). Raw compute: 2.534 TFLOPS (Iris Xe Graphics MAX) vs 0.5445 TFLOPS (GeForce GT 645).
| Feature | Iris Xe Graphics MAX | GeForce GT 645 |
|---|---|---|
| G3D Mark Score | 1,972 | 2,006+2% |
| Architecture | Generation 12.1 | Kepler |
| Process Node | 10 nm | 28 nm |
| Shading Units | 768+100% | 384 |
| Compute (TFLOPS) | 2.534 TFLOPS+365% | 0.5445 TFLOPS |
| ROPs | 24+50% | 16 |
| TMUs | 48+50% | 32 |
Advanced Features (DLSS/FSR)
| Feature | Iris Xe Graphics MAX | GeForce GT 645 |
|---|---|---|
| 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 Xe Graphics MAX comes with 0 MB of VRAM, while the GeForce GT 645 has 2 GB. The GeForce GT 645 offers 100+% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: System vs 128-bit.
| Feature | Iris Xe Graphics MAX | GeForce GT 645 |
|---|---|---|
| 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: 12.1 (Iris Xe Graphics MAX) vs 12 (11_0) (GeForce GT 645). Vulkan: 1.0 vs 1.2. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 4 vs 3.
| Feature | Iris Xe Graphics MAX | GeForce GT 645 |
|---|---|---|
| DirectX | 12.1 | 12 (11_0) |
| Vulkan | 1.0 | 1.2+20% |
| OpenGL | 4.6 | 4.6 |
| Max Displays | 4+33% | 3 |
Media & Encoding
Hardware encoder: QuickSync (Iris Xe Graphics MAX) vs NVENC (1st Gen) (GeForce GT 645). Decoder: QuickSync vs NVDEC (1st Gen). Supported codecs: H.264,HEVC,AV1 (Iris Xe Graphics MAX) vs H.264,MPEG-2,VC-1 (GeForce GT 645).
| Feature | Iris Xe Graphics MAX | GeForce GT 645 |
|---|---|---|
| Encoder | QuickSync | NVENC (1st Gen) |
| Decoder | QuickSync | NVDEC (1st Gen) |
| Codecs | H.264,HEVC,AV1 | H.264,MPEG-2,VC-1 |
Power & Dimensions
The Iris Xe Graphics MAX draws 25W versus the GeForce GT 645's 32W — a 24.6% difference. The Iris Xe Graphics MAX is more power-efficient. Recommended PSU: 1W (Iris Xe Graphics MAX) vs 350W (GeForce GT 645). Power connectors: Integrated vs PCIe-powered. Typical load temperature: 85°C vs 80.
| Feature | Iris Xe Graphics MAX | GeForce GT 645 |
|---|---|---|
| TDP | 25W-22% | 32W |
| Recommended PSU | 1W-100% | 350W |
| Power Connector | Integrated | PCIe-powered |
| Length | — | 145mm |
| Height | — | 111mm |
| Slots | — | 1 |
| Temp (Load) | 85°C | 80-6% |
| Perf/Watt | 78.9+26% | 62.7 |
Value Analysis
The Iris Xe Graphics MAX launched at $55 MSRP and currently averages $40, while the GeForce GT 645 launched at $99 and now averages $15. The GeForce GT 645 costs 62.5% less ($25 savings) at current market prices. Performance per dollar (G3D Mark / price): 49.3 (Iris Xe Graphics MAX) vs 133.7 (GeForce GT 645) — the GeForce GT 645 offers 171.2% better value. The Iris Xe Graphics MAX is the newer GPU (2020 vs 2012).
| Feature | Iris Xe Graphics MAX | GeForce GT 645 |
|---|---|---|
| MSRP | $55-44% | $99 |
| Avg Price (30d) | $40 | $15-63% |
| Performance per Dollar | 49.3 | 133.7+171% |
| Codename | DG1 | GK107 |
| Release | October 31 2020 | October 1 2012 |
| Ranking | #685 | #903 |
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