
GeForce GTX 675MX vs Radeon Steam Deck 8CU

GeForce GTX 675MX
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Radeon Steam Deck 8CU
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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. The GeForce GTX 675MX is positioned at rank #75 in our cost-efficiency ranking, representing a Balanced cost-benefit for your build. 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 GeForce GTX 675MX
Performance Per Dollar
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The Radeon Steam Deck 8CU is significantly newer (2023 vs 2012). The Radeon Steam Deck 8CU likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The GeForce GTX 675MX lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The Radeon Steam Deck 8CU is the superior choice for raw performance. It leads with a 1.7% higher G3D Mark score. However, the GeForce GTX 675MX offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | GeForce GTX 675MX | Radeon Steam Deck 8CU |
|---|---|---|
| Performance | ❌Lower raw frame rates (-1.7%) | ✅Leading raw performance (+1.7%) |
| Longevity | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) | RDNA 2 (2022−2023) (6nm) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+100%) | ❌ Less VRAM capacity |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | — | 📏 Compact / SFF Friendly |
💎 Value Proposition
While current pricing data is unavailable, the Radeon Steam Deck 8CU 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 675MX and Radeon Steam Deck 8CU

GeForce GTX 675MX
The GeForce GTX 675MX is manufactured by NVIDIA. It was released in October 1 2012. It features the Kepler architecture. The core clock speed is 600 MHz. It has 960 shading units. The thermal design power (TDP) is 100W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 2,951 points.

Radeon Steam Deck 8CU
The Radeon Steam Deck 8CU is manufactured by AMD. It was released in November 9 2023. It features the RDNA 2 architecture. The boost clock speed is 1900 MHz. It has 512 shading units. The thermal design power (TDP) is 30W. Manufactured using 6 nm process technology. G3D Mark benchmark score: 3,000 points.
Graphics Performance
The GeForce GTX 675MX scores 2,951 and the Radeon Steam Deck 8CU reaches 3,000 in the G3D Mark benchmark — just a 1.7% difference, making them near-identical in rasterization performance. The GeForce GTX 675MX is built on Kepler while the Radeon Steam Deck 8CU uses RDNA 2, both on 28 nm vs 6 nm. Shader units: 960 (GeForce GTX 675MX) vs 512 (Radeon Steam Deck 8CU).
| Feature | GeForce GTX 675MX | Radeon Steam Deck 8CU |
|---|---|---|
| G3D Mark Score | 2,951 | 3,000+2% |
| Architecture | Kepler | RDNA 2 |
| Process Node | 28 nm | 6 nm |
| Shading Units | 960+88% | 512 |
| L1 Cache | 80 KB | 512 KB+540% |
| L2 Cache | 0.5 MB | 1 MB+100% |
Advanced Features (DLSS/FSR)
| Feature | GeForce GTX 675MX | Radeon Steam Deck 8CU |
|---|---|---|
| Upscaling Tech | FSR 2.1 (Compatible) | FSR 1.0 (Software) |
| Frame Generation | FSR 3 (Compatible) | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | Standard | AMD Anti-Lag |
Video Memory (VRAM)
The GeForce GTX 675MX comes with 4 GB of VRAM, while the Radeon Steam Deck 8CU has 2 GB. The GeForce GTX 675MX offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 64-bit. L2 Cache: 0.5 MB (GeForce GTX 675MX) vs 1 MB (Radeon Steam Deck 8CU) — the Radeon Steam Deck 8CU has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce GTX 675MX | Radeon Steam Deck 8CU |
|---|---|---|
| VRAM Capacity | 4 GB+100% | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit+100% | 64-bit |
| L2 Cache | 0.5 MB | 1 MB+100% |
Display & API Support
DirectX support: 12 (11_0) (GeForce GTX 675MX) vs 12_0 (Radeon Steam Deck 8CU). Maximum simultaneous displays: 4 vs 0.
| Feature | GeForce GTX 675MX | Radeon Steam Deck 8CU |
|---|---|---|
| DirectX | 12 (11_0) | 12_0 |
| Max Displays | 4 | 0 |
Media & Encoding
Hardware encoder: NVENC 1st Gen (GeForce GTX 675MX) vs VCN 3.0 (Radeon Steam Deck 8CU). Decoder: PureVideo HD VP5 vs VCN 3.0.
| Feature | GeForce GTX 675MX | Radeon Steam Deck 8CU |
|---|---|---|
| Encoder | NVENC 1st Gen | VCN 3.0 |
| Decoder | PureVideo HD VP5 | VCN 3.0 |
| Codecs | H.264,VC-1,MPEG-2,MPEG-4 ASP | — |
Power & Dimensions
The GeForce GTX 675MX draws 100W versus the Radeon Steam Deck 8CU's 30W — a 107.7% difference. The Radeon Steam Deck 8CU is more power-efficient. Recommended PSU: 350W (GeForce GTX 675MX) vs 350W (Radeon Steam Deck 8CU). Power connectors: 1x 6-pin vs PCIe-powered.
| Feature | GeForce GTX 675MX | Radeon Steam Deck 8CU |
|---|---|---|
| TDP | 100W | 30W-70% |
| Recommended PSU | 350W | 350W |
| Power Connector | 1x 6-pin | PCIe-powered |
| Length | — | 1mm |
| Slots | 0 | 0 |
| Temp (Load) | 85°C | — |
| Perf/Watt | 29.5 | 100.0+239% |
Value Analysis
The Radeon Steam Deck 8CU is the newer GPU (2023 vs 2012).
| Feature | GeForce GTX 675MX | Radeon Steam Deck 8CU |
|---|---|---|
| MSRP | — | $0 |
| Avg Price (30d) | — | $0 |
| Codename | GK104 | RDNA 2 Sephiroth |
| Release | October 1 2012 | November 9 2023 |
| Ranking | #588 | #480 |
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