GeForce 845M
Iris Plus Graphics 645
GeForce 845M vs Iris Plus Graphics 645 Performance Spectrum
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.
GeForce 845M vs Iris Plus Graphics 645 FPS Benchmarks
Predicted gaming performance across popular games. Tested paired with Ryzen 7 9800X3D to isolate GPU performance.
Search any supported game below to compare 1080p FPS for both components.
Path of Exile 2
Counter-Strike 2
League of Legends
GeForce 845M vs Iris Plus Graphics 645: Pros, Cons & Final Verdict
See where each GPU makes more sense in practice: raw FPS, VRAM, features, power draw, pricing, and long-term headroom.
GeForce 845M
2015Why buy it
- ✅100+% more VRAM for high-resolution textures and newer games (512 MB vs Unknown).
- ✅Iris Plus Graphics 645 is already obsolete for modern gaming, so GeForce 845M is the less risky modern option long term.
Trade-offs
- ❌2015 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
- ❌120% higher power demand at 33W vs 15W.
Iris Plus Graphics 645
2019Why buy it
- ✅Draws 15W instead of 33W, a 18W reduction.
- ✅More future proof: Generation 9.5 (2016−2020) on 14nm with a newer platform for upcoming games.
Trade-offs
- ❌Less VRAM, with Unknown vs 512 MB for high-resolution textures and newer games.
- ❌2019 hardware with Unknown of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
Quick Answers
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GeForce 845M vs Iris Plus Graphics 645 Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
GeForce 845M
The GeForce 845M is manufactured by NVIDIA. It was released in August 26 2015. It features the Maxwell architecture. The core clock ranges from 1071 MHz to 1176 MHz. It has 384 shading units. The thermal design power (TDP) is 33W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,487 points.
Iris Plus Graphics 645
The Iris Plus Graphics 645 is manufactured by Intel. It was released in October 7 2019. 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: 1,450 points.
Graphics Performance
The GeForce 845M scores 1,487 and the Iris Plus Graphics 645 reaches 1,450 in the G3D Mark benchmark — just a 2.6% difference, making them near-identical in rasterization performance. The GeForce 845M is built on Maxwell while the Iris Plus Graphics 645 uses Generation 9.5, both on 28 nm vs 14 nm+++. Shader units: 384 (GeForce 845M) vs 384 (Iris Plus Graphics 645). Raw compute: 0.9032 TFLOPS (GeForce 845M) vs 0.8064 TFLOPS (Iris Plus Graphics 645). Boost clocks: 1176 MHz vs 1050 MHz.
| Feature | GeForce 845M | Iris Plus Graphics 645 |
|---|---|---|
| G3D Mark Score | 1,487+3% | 1,450 |
| Architecture | Maxwell | Generation 9.5 |
| Process Node | 28 nm | 14 nm+++ |
| Shading Units | 384 | 384 |
| Compute (TFLOPS) | 0.9032 TFLOPS+12% | 0.8064 TFLOPS |
| Boost Clock | 1176 MHz+12% | 1050 MHz |
| ROPs | 16+167% | 6 |
| TMUs | 32 | 48+50% |
Advanced Features (DLSS/FSR)
The GeForce 845M gets NVIDIA DLSS, which still tends to look cleaner in motion. The Iris Plus Graphics 645 leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.
| Feature | GeForce 845M | Iris Plus Graphics 645 |
|---|---|---|
| Upscaling Tech | Upscaling support | Upscaling support |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | NVIDIA Reflex | Standard |
Video Memory (VRAM)
The GeForce 845M has 512 MB of VRAM, while the Iris Plus Graphics 645 carries 0 MB. GeForce 845M gives you 100+% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bus width is 128-bit on the GeForce 845M and System on the Iris Plus Graphics 645.
| Feature | GeForce 845M | Iris Plus Graphics 645 |
|---|---|---|
| VRAM Capacity | 0.5 GB | Shared System RAM |
| Memory Type | GDDR5 | Shared |
| Memory Bandwidth | Unknown | System |
| Bus Width | 128-bit | System |
Power & Dimensions
The GeForce 845M draws 33W versus the Iris Plus Graphics 645's 15W — a 75% difference. The Iris Plus Graphics 645 is more power-efficient. Recommended PSU: 350W (GeForce 845M) vs 1W (Iris Plus Graphics 645). Power connectors: Legacy vs Integrated.
| Feature | GeForce 845M | Iris Plus Graphics 645 |
|---|---|---|
| TDP | 33W | 15W-55% |
| Recommended PSU | 350W | 1W-100% |
| Power Connector | Legacy | Integrated |
| Slots | 0 | — |
| Temp (Load) | 85°C | — |
| Perf/Watt | 45.1 | 96.7+114% |
Value Analysis
The newer card here is Iris Plus Graphics 645 (2019 vs 2015).
| Feature | GeForce 845M | Iris Plus Graphics 645 |
|---|---|---|
| MSRP | — | $0 |
| Codename | GM108 | Coffee Lake GT3e |
| Release | August 26 2015 | October 7 2019 |
| Ranking | #768 | #720 |
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