GeForce GT 645
Iris Xe MAX Graphics
GeForce GT 645 vs Iris Xe MAX Graphics 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 GT 645 vs Iris Xe MAX Graphics 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 GT 645 vs Iris Xe MAX Graphics: 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 GT 645
2012Why buy it
- ✅100+% more VRAM for high-resolution textures and newer games (2 GB vs Unknown).
- ✅Iris Xe MAX Graphics is already obsolete for modern gaming, so GeForce GT 645 is the less risky modern option long term.
Trade-offs
- ❌2012 hardware with 2 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
- ❌80% HIGHER MSRP$99 MSRPvs$55 MSRP
- ❌Lower G3D Mark per dollar, at 20.3 vs 35.9 G3D/$ ($99 MSRP vs $55 MSRP).
- ❌28% higher power demand at 32W vs 25W.
Iris Xe MAX Graphics
2020Why buy it
- ✅Costs $44 less on MSRP ($55 MSRP vs $99 MSRP).
- ✅Delivers 76.9% more G3D Mark for each dollar spent, at 35.9 vs 20.3 G3D/$ ($55 MSRP vs $99 MSRP).
- ✅Draws 25W instead of 32W, a 7W reduction.
Trade-offs
- ❌Less VRAM, with Unknown vs 2 GB for high-resolution textures and newer games.
- ❌2020 hardware with Unknown of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
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GeForce GT 645 vs Iris Xe MAX Graphics Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
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.
Iris Xe MAX Graphics
The Iris Xe MAX Graphics is manufactured by Intel. It was released in October 31 2020. It features the Generation 12.1 architecture. The core clock ranges from 300 MHz to 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.
Graphics Performance
The GeForce GT 645 scores 2,006 and the Iris Xe MAX Graphics reaches 1,972 in the G3D Mark benchmark — just a 1.7% difference, making them near-identical in rasterization performance. The GeForce GT 645 is built on Kepler while the Iris Xe MAX Graphics uses Generation 12.1, both on 28 nm vs 10 nm. Shader units: 384 (GeForce GT 645) vs 768 (Iris Xe MAX Graphics). Raw compute: 0.5445 TFLOPS (GeForce GT 645) vs 2.534 TFLOPS (Iris Xe MAX Graphics).
| Feature | GeForce GT 645 | Iris Xe MAX Graphics |
|---|---|---|
| G3D Mark Score | 2,006+2% | 1,972 |
| Architecture | Kepler | Generation 12.1 |
| Process Node | 28 nm | 10 nm |
| Shading Units | 384 | 768+100% |
| Compute (TFLOPS) | 0.5445 TFLOPS | 2.534 TFLOPS+365% |
| ROPs | 16 | 24+50% |
| TMUs | 32 | 48+50% |
| L2 Cache | 0.25 MB | 1 MB+300% |
Advanced Features (DLSS/FSR)
The GeForce GT 645 gets NVIDIA DLSS, which still tends to look cleaner in motion. The Iris Xe MAX Graphics leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.
| Feature | GeForce GT 645 | Iris Xe MAX Graphics |
|---|---|---|
| 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 GT 645 has 2 GB of VRAM, while the Iris Xe MAX Graphics carries 0 MB. GeForce GT 645 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 GT 645 and System on the Iris Xe MAX Graphics. L2 Cache: 0.25 MB (GeForce GT 645) vs 1 MB (Iris Xe MAX Graphics) — the Iris Xe MAX Graphics has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce GT 645 | Iris Xe MAX Graphics |
|---|---|---|
| VRAM Capacity | 2 GB | Shared System RAM |
| Memory Type | GDDR5 | Shared |
| Memory Bandwidth | Unknown | System |
| Bus Width | 128-bit | System |
| L2 Cache | 0.25 MB | 1 MB+300% |
Display & API Support
DirectX support: 12 (11_0) (GeForce GT 645) vs 12.1 (Iris Xe MAX Graphics). Vulkan: 1.2 vs 1.3. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 3 vs 4.
| Feature | GeForce GT 645 | Iris Xe MAX Graphics |
|---|---|---|
| DirectX | 12 (11_0) | 12.1 |
| Vulkan | 1.2 | 1.3+8% |
| OpenGL | 4.6 | 4.6 |
| Max Displays | 3 | 4+33% |
Media & Encoding
Hardware encoder: NVENC (1st Gen) (GeForce GT 645) vs QuickSync (Iris Xe MAX Graphics). Decoder: NVDEC (1st Gen) vs QuickSync. Supported codecs: H.264,MPEG-2,VC-1 (GeForce GT 645) vs H.264,H.265,VP9,AV1 (Iris Xe MAX Graphics).
| Feature | GeForce GT 645 | Iris Xe MAX Graphics |
|---|---|---|
| Encoder | NVENC (1st Gen) | QuickSync |
| Decoder | NVDEC (1st Gen) | QuickSync |
| Codecs | H.264,MPEG-2,VC-1 | H.264,H.265,VP9,AV1 |
Power & Dimensions
The GeForce GT 645 draws 32W versus the Iris Xe MAX Graphics's 25W — a 24.6% difference. The Iris Xe MAX Graphics is more power-efficient. Recommended PSU: 350W (GeForce GT 645) vs 1W (Iris Xe MAX Graphics). Power connectors: PCIe-powered vs Integrated. Card length: 145mm vs 0mm, occupying 1 vs 0 slots. Typical load temperature: 80 vs 80.
| Feature | GeForce GT 645 | Iris Xe MAX Graphics |
|---|---|---|
| TDP | 32W | 25W-22% |
| Recommended PSU | 350W | 1W-100% |
| Power Connector | PCIe-powered | Integrated |
| Length | 145mm | 0mm |
| Height | 111mm | 0mm |
| Slots | 1 | 0-100% |
| Temp (Load) | 80 | 80 |
| Perf/Watt | 62.7 | 78.9+26% |
Value Analysis
At launch, the GeForce GT 645 came in at $99, while the Iris Xe MAX Graphics launched at $55. On MSRP, Iris Xe MAX Graphics was 44.4% cheaper ($44 less). Performance per dollar on MSRP (G3D Mark / MSRP): 20.3 (GeForce GT 645) vs 35.9 (Iris Xe MAX Graphics) — the Iris Xe MAX Graphics offers 76.8% better value. The newer card here is Iris Xe MAX Graphics (2020 vs 2012).
| Feature | GeForce GT 645 | Iris Xe MAX Graphics |
|---|---|---|
| MSRP | $99 | $55-44% |
| Performance per Dollar | 20.3 | 35.9+77% |
| Codename | GK107 | DG1 |
| Release | October 1 2012 | October 31 2020 |
| Ranking | #903 | #686 |
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