
GeForce GTX 660M vs GeForce 845M

GeForce GTX 660M
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GeForce 845M
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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. The GeForce GTX 660M is positioned at rank 190 and the GeForce 845M is on rank 259, so the GeForce GTX 660M offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar GeForce GTX 660M
Performance Per Dollar GeForce 845M
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The GeForce 845M is the superior choice for raw performance. It leads with a 2.4% higher G3D Mark score. However, the GeForce GTX 660M offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | GeForce GTX 660M | GeForce 845M |
|---|---|---|
| Performance | ❌Lower raw frame rates (-2.4%) | ✅Leading raw performance (+2.4%) |
| Longevity | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) | 🛑Obsolete Architecture (2015 / Maxwell (2014−2017)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+300%) | ❌ Less VRAM capacity |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | — | — |
💎 Value Proposition
While current pricing data is unavailable, the GeForce 845M 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 GeForce GTX 660M and GeForce 845M

GeForce GTX 660M
The GeForce GTX 660M is manufactured by NVIDIA. It was released in March 22 2012. It features the Kepler architecture. The core clock ranges from 835 MHz to 950 MHz. It has 384 shading units. The thermal design power (TDP) is 50W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,452 points.

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.
Graphics Performance
The GeForce GTX 660M scores 1,452 and the GeForce 845M reaches 1,487 in the G3D Mark benchmark — just a 2.4% difference, making them near-identical in rasterization performance. The GeForce GTX 660M is built on Kepler while the GeForce 845M uses Maxwell, both on a 28 nm process. Shader units: 384 (GeForce GTX 660M) vs 384 (GeForce 845M). Raw compute: 0.7296 TFLOPS (GeForce GTX 660M) vs 0.9032 TFLOPS (GeForce 845M). Boost clocks: 950 MHz vs 1176 MHz.
| Feature | GeForce GTX 660M | GeForce 845M |
|---|---|---|
| G3D Mark Score | 1,452 | 1,487+2% |
| Architecture | Kepler | Maxwell |
| Process Node | 28 nm | 28 nm |
| Shading Units | 384 | 384 |
| Compute (TFLOPS) | 0.7296 TFLOPS | 0.9032 TFLOPS+24% |
| Boost Clock | 950 MHz | 1176 MHz+24% |
| ROPs | 16 | 16 |
| TMUs | 32 | 32 |
| L1 Cache | 32 KB | 192 KB+500% |
| L2 Cache | 0.25 MB | 1 MB+300% |
Advanced Features (DLSS/FSR)
| Feature | GeForce GTX 660M | GeForce 845M |
|---|---|---|
| Upscaling Tech | FSR 2.1 (Compatible) | FSR 1.0 (Software) |
| Frame Generation | FSR 3 (Compatible) | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | Standard | Standard |
Video Memory (VRAM)
The GeForce GTX 660M comes with 2 GB of VRAM, while the GeForce 845M has 512 MB. The GeForce GTX 660M offers 300% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 128-bit. L2 Cache: 0.25 MB (GeForce GTX 660M) vs 1 MB (GeForce 845M) — the GeForce 845M has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce GTX 660M | GeForce 845M |
|---|---|---|
| VRAM Capacity | 2 GB+300% | 0.5 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 128-bit | 128-bit |
| L2 Cache | 0.25 MB | 1 MB+300% |
Display & API Support
DirectX support: 12 (11_0) (GeForce GTX 660M) vs 12 (11_0) (GeForce 845M). Vulkan: 1.2 vs 1.3. OpenGL: 4.5 vs 4.6. Maximum simultaneous displays: 4 vs 3.
| Feature | GeForce GTX 660M | GeForce 845M |
|---|---|---|
| DirectX | 12 (11_0) | 12 (11_0) |
| Vulkan | 1.2 | 1.3+8% |
| OpenGL | 4.5 | 4.6+2% |
| Max Displays | 4+33% | 3 |
Media & Encoding
Hardware encoder: NVENC 1st Gen (GeForce GTX 660M) vs 4th Gen NVENC (Maxwell) (GeForce 845M). Decoder: PureVideo HD VP5 vs PureVideo HD VP6. Supported codecs: H.264,VC-1,MPEG-2,MPEG-4 ASP (GeForce GTX 660M) vs H.264,HEVC (GeForce 845M).
| Feature | GeForce GTX 660M | GeForce 845M |
|---|---|---|
| Encoder | NVENC 1st Gen | 4th Gen NVENC (Maxwell) |
| Decoder | PureVideo HD VP5 | PureVideo HD VP6 |
| Codecs | H.264,VC-1,MPEG-2,MPEG-4 ASP | H.264,HEVC |
Power & Dimensions
The GeForce GTX 660M draws 50W versus the GeForce 845M's 33W — a 41% difference. The GeForce 845M is more power-efficient. Recommended PSU: 350W (GeForce GTX 660M) vs 350W (GeForce 845M). Power connectors: 1x 6-pin vs Legacy. Typical load temperature: 60°C vs 85°C.
| Feature | GeForce GTX 660M | GeForce 845M |
|---|---|---|
| TDP | 50W | 33W-34% |
| Recommended PSU | 350W | 350W |
| Power Connector | 1x 6-pin | Legacy |
| Slots | 0 | 0 |
| Temp (Load) | 60°C-29% | 85°C |
| Perf/Watt | 29.0 | 45.1+56% |
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