Iris Plus Graphics 655
Radeon HD 6900M
Iris Plus Graphics 655 vs Radeon HD 6900M 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.
Iris Plus Graphics 655 vs Radeon HD 6900M 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
Iris Plus Graphics 655 vs Radeon HD 6900M: Pros, Cons & Final Verdict
See where each GPU makes more sense in practice: raw FPS, VRAM, features, power draw, pricing, and long-term headroom.
Iris Plus Graphics 655
2018Why buy it
- ✅Draws 15W instead of 75W, a 60W 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.
- ❌2018 hardware with Unknown of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
Radeon HD 6900M
2011Why buy it
- ✅100+% more VRAM for high-resolution textures and newer games (512 MB vs Unknown).
- ✅Iris Plus Graphics 655 is already obsolete for modern gaming, so Radeon HD 6900M is the less risky modern option long term.
Trade-offs
- ❌2011 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
- ❌400% higher power demand at 75W vs 15W.
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Iris Plus Graphics 655 vs Radeon HD 6900M Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
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.
Radeon HD 6900M
The Radeon HD 6900M is manufactured by AMD. It was released in January 4 2011. It features the TeraScale 2 architecture. The core clock speed is 680 MHz. It has 960 shading units. The thermal design power (TDP) is 75W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 1,707 points.
Graphics Performance
The Iris Plus Graphics 655 scores 1,729 and the Radeon HD 6900M reaches 1,707 in the G3D Mark benchmark — just a 1.3% difference, making them near-identical in rasterization performance. The Iris Plus Graphics 655 is built on Generation 9.5 while the Radeon HD 6900M uses TeraScale 2, both on 14 nm+++ vs 40 nm. Shader units: 384 (Iris Plus Graphics 655) vs 960 (Radeon HD 6900M). Raw compute: 0.8064 TFLOPS (Iris Plus Graphics 655) vs 1.306 TFLOPS (Radeon HD 6900M).
| Feature | Iris Plus Graphics 655 | Radeon HD 6900M |
|---|---|---|
| G3D Mark Score | 1,729+1% | 1,707 |
| Architecture | Generation 9.5 | TeraScale 2 |
| Process Node | 14 nm+++ | 40 nm |
| Shading Units | 384 | 960+150% |
| Compute (TFLOPS) | 0.8064 TFLOPS | 1.306 TFLOPS+62% |
| ROPs | 6 | 32+433% |
| TMUs | 48 | 48 |
Advanced Features (DLSS/FSR)
| Feature | Iris Plus Graphics 655 | Radeon HD 6900M |
|---|---|---|
| Upscaling Tech | Upscaling support | FSR Upscaling / FSR 4 |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | Standard | AMD Anti-Lag |
Video Memory (VRAM)
The Iris Plus Graphics 655 has 0 MB of VRAM, while the Radeon HD 6900M carries 512 MB. Radeon HD 6900M gives you 100+% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bus width is System on the Iris Plus Graphics 655 and System on the Radeon HD 6900M.
| Feature | Iris Plus Graphics 655 | Radeon HD 6900M |
|---|---|---|
| VRAM Capacity | Shared System RAM | 0.5 GB |
| Memory Type | Shared | Shared |
| Memory Bandwidth | System | System |
| Bus Width | System | System |
Power & Dimensions
The Iris Plus Graphics 655 draws 15W versus the Radeon HD 6900M's 75W — a 133.3% difference. The Iris Plus Graphics 655 is more power-efficient. Recommended PSU: 1W (Iris Plus Graphics 655) vs 350W (Radeon HD 6900M). Power connectors: Integrated vs 1x 6-pin.
| Feature | Iris Plus Graphics 655 | Radeon HD 6900M |
|---|---|---|
| TDP | 15W-80% | 75W |
| Recommended PSU | 1W-100% | 350W |
| Power Connector | Integrated | 1x 6-pin |
| Length | 0mm | — |
| Height | 0mm | — |
| Slots | 0 | — |
| Temp (Load) | 85 | — |
| Perf/Watt | 115.3+406% | 22.8 |
Value Analysis
The newer card here is Iris Plus Graphics 655 (2018 vs 2011).
| Feature | Iris Plus Graphics 655 | Radeon HD 6900M |
|---|---|---|
| MSRP | $0 | — |
| Codename | Coffee Lake GT3e | Blackcomb |
| Release | April 3 2018 | January 4 2011 |
| Ranking | #723 | #654 |
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